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Welcome To The Sphere Research Canadian Test Equipment Site ! Data on Nixies, Nixie Tubes, Dekatrons, E1T Counting Tubes, plus Panaplex and Numitron Data, from Burroughs, Amperex, Philips, National, NEC, IEE, etc.
Updated Regularly Click REFRESH on your browser if pages seem unchanged Visit our amazing document server. Everything from Quotes and SciFi to Ethics and Business. Want something? Click here to e-mail an order to us!		Sphere Research Corporation 3394 Sunnyside Rd. West Kelowna, BC, Canada V1Z 2V4 Phone: +1 (250) 769-1834 FAX:+1 (250) 769-4106 A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES! JUST SCROLL DOWN TO SEE EVERYTHING

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NIXIE, Dekatron, Panaplex & Numitron TUBE DATA Skip the INTRO, Go RIGHT to the TUBE DATA! These are the various Nixie Tubes we have operating data for from Burroughs, National (Wang), Raytheon, NEC, Amperex, Philips, and Numitrons from RCA. We have some new (NOS) and some pulls available. CLICK HERE TO SEE WHAT'S IN STOCK! All our Nixies have good or excellent element visibility, and none have blackened fronts. We are very picky about what we buy and sell, you can be sure these are worth having. Lots of new NIXIE data just added for your reference. Please note that over-current makes the tubes blacken, and seriously shortens tube life, limit average current to 2.5-3mA for most tubes. NAVIGATION: To make your life easier, and help you find exactly what you want, we have broken the on-line equipment catalogs into smaller sections. Just CLICK on the item you are looking for at the left, to see the matching catalog. Large graphical catalogs are a bit SLOW, so please give them a bit of time to load. The top header of each catalog is largely the same, so don't think you are stuck in one place! You can order anything here just by picking up the phone, and calling (250) 769-1834 during normal office hours, 8:30AM to 4:30PM PST, or FAX to (250) 769-4106. OR, Email your order to Susan HERE. SHIPPING: Preferred and Alternate Methods as of June 4, 2013, CLICK for FULL DETAILS ON OUR FAQ Page. Rates are now changing rapidy, often with little notice to us, so all the data has been transferred to the FAQ page for speedy updating. E-Mail Susan if you want a quote for shipping to other destinations, or for something heavy. Sorry, we can't safely send most individual small parts in a regular letter envelope, they get destroyed by the automated handling equipment. Sometimes we can ship very rugged parts in a small padded envelope by letter post. Ask Susan. There is a packing charge for large or heavy equipment, see the FAQ for details. If we have your valid data on file, you can just click on the ORDER email link to place an order and indicate your approval to bill, and we will do the rest. We keep your active information for ONE YEAR for your convenience. If this is the first time you have dealt with us, you can phone +1 (250) 769-1834 or FAX +1 (250) 769-4106 to supply the billing info, or send it by the email link, as you prefer. We accept VISA/MC, international money order, Paypal (to Susan@Okanagan.net), and bank wire transfer. Please note that there are transaction fees with Paypal and wire transfer payments, the wire transfer fee is frankly horrifying. The TUBE DATA will appear below shortly! Don't forget these illustrated sections take a few seconds to load, but they are worth the wait! CLICK HERE to see NIXIES in STOCK!

DISPLAY PARTS and INFO NAVIGATION:
YOU ARE HERE! CLICK HERE for Nixie & Numitron Tube Data	CLICK HERE for IN STOCK Nixie Tubes	CLICK HERE for Numitrons, Panaplex, VF Displays	CLICK HERE for Sockets, Driver ICs, Filters, Bezels

CATALOG:JUST SCROLL DOWN TO SEE EVERYTHING !

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GENERAL NIXIE TUBE and VFD DATA that may interest you:

Hard to find ZM1000 tube data below: Get the full data sheets HERE: Page 1, Page 2, Page 3, Page 4, Page 5

GROUPS! CLICK HERE To visit the on line NIXIE group at Google, post questions, get info, share info, learn about Nixie clock design and much more. The previous Yahoo group has moved to this new location. Burroughs Data HERE's some locally stored NIXIE TUBE General Info, Mechanical Info, Spec Sheets, and Voltage Considerations. Here are miniature pinouts (7009), and full size (6844). HERE's More European Nixie Data for ZM-, GS-, GN- and other types. Worth a visit! Åke's NEW Tube Site Lots of Nixie data and CRTs. CLICK to see the great article on Nixies in IEEE Spectrum, June 2002. More off-site NIXIE tube data continually in progress HERE from A. J. Franzman! Visit FRANK's Electron Tube Pages. CLICK HERE! World's larget tube data index! Need VFD Data? Try these sites: Futaba Displays and Noritake-Itron Displays

CLICK to Visit!	Original Burroughs Nixie and Panaplex data sheets! Visit the amazing tube archives at World Power Systems! CLICK HERE to see their amazing archives of original Burroughs data, everything you ever wanted to know about multiplexing and tube life, plus the original information about how Panaplex displays work. Wahoo! A treasure trove of rare and hard to find information. YET MORE orignal Burroughs spec. sheets on the wonderful WPS site.
CLICK to Visit!	Interested in electronic artwork based on numerical displays and similar technology? Visit Guy Marsden's unique site, and see what he has made from nixies, numitrons, and LEDs. Many fascinating creations can be viewed from Guy Marsden. Drop by his site and say hi from us!
CLICK to Visit!	Interested in a unique electronic clock? Have a peek at this fascinating project that produces a digital clock on a CRT, instead of nixie tubes. A great and incredibly creative project from David Forbes. Drop by his site and say hi from us!
CLICK to Visit!	A scope-based electronic clock The Dutchtronix AVR Oscilloscope Clock. A very clever microcontroller based digital clock that drives your under-utilized scope between other uses. Designed by Jan de Rie you can email him here: . Drop by his site and say hi from us. Now shipping the Version 3 software, with many new features!
Oscilloscopeclocknixiecrt.com CLICK to Visit!	Scope and Nixie Clock Kits of all kinds from Oscilloscopeclocknixiecrt.com. An interesting assortment of kits and finished CRT and Nixie Tube clocks for sale.
CLICK to Visit!	Want to understand how Nixie tubes, Numitrons, LCDs and CRTs really work? Have a look a this great site from Rick Furr for clear and beautifully illustrated explanations of the physics behind display technology.
CLICK to Visit!	Want to understand how the fabled Philips E1T cathode ray scalar counting tube works? Have a look a this detailed history from Ronald Dekker for the complete story behind this amazing device. Want the original factory 6370/E1T Datasheet? CLICK HERE for a PDF.
CLICK to Visit!	Need info on all those strange Japanese Nixies like CD11's, CD91's and the 57/58xx series marketed by Burroughs and National? Have a look at this site. All in Japanese, but the base diagrams and some operating data are easily readable. An amazing resource, worth a visit!

Note: numbers may be prefixed by B for Burrough, NL for National
Medium sized tubes may have a suffix for spacer, long leads, etc.

Miniature 4041 7009 7977 8502	Medium 5853 5855 5870	Medium 5750	Large/Std. 8422 5991 59917A	Large/Std. 8421 5031 5092/A 6844A 8037	Jumbo 8423 6033 6091 7153
0.31"Digit 0.6"Glass 11 pin	0.5"Digit 0.5"Glass 14 pin	0.55"Digit 0.5"Glass 14 pin	0.6"Digit 0.7"Glass 14 pin	0.6"Digit 1.0"Glass 13 pin	0.8"Digit 1.2"Glass 13 pin

Burroughs Data Sheets
Provided and scanned courtesy of David Forbes!

CLICK for Bigger PIC!	Burroughs Miniature Nixie Tubes Data Sheet covers these nixie tube numbers: B4021 B4032 B4081 7009 7977 Click on the drawing at left to bring up the full sized data sheet, includes tube specs, pinout and mechanical drawings.
CLICK for Bigger PIC!	Burroughs Standard / Super Nixie Tubes Data Sheet covers these nixie tube numbers: B5031 B5092 B6033 B6091 6844A 7153 8037 Click on the drawing at left to bring up the full sized data sheet, includes tube specs, pinout and mechanical drawings.
CLICK for Bigger PIC!	Burroughs Large / Jumbo Nixie Tubes Data Sheet covers these nixie tube numbers: B7094 B8091 Click on the drawing at left to bring up the full sized data sheet, includes tube specs, pinout and mechanical drawings.

Want to build a digital clock?

Want to build a Digital Clock, but have no idea how to start? Here are the original data sheets from National Semiconductor on their famous clock chips, and the special HV driver for both panaplex and nixie tubes. You can Visit National Semiconductor by clicking on their logo below. These are no longer production parts, however, and you have to h8nt for them as surplus parts. CLICK to Visit!

Datasheets (all in Adobe PDF format) DS7880 / DS8880 HV seven segment driver, for Panaplex displays. MM5309, MM5311, MM5312, MM5313, MM5314, MM5315 Integrated Clock Chips, with multiplexed BCD and seven segment outputs. MM5375 Series Integrated Clock Chip Second generation with multiplexed seven segment outputs, alarm and options. Good for Panaplex displays, not for nixies.

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NATIONAL NL-Series NIXIE TUBE DATA

National NL-840 Series Nixie Tubes	CLICK HERE to download the JPG factory datasheet (Includes NL8xx-9xx Tubes)
AVOID over-current, or tubes will darken prematurely!

German Nixies, Z Series

NIXIE Z560M

Z560M GERMAN TUBES These red-filtered tubes are a physically larger envelope than the very common Burroughs 5092/8421, but are pin and function compatible. Standard size digit horizontal view tubes, they have a glass filler at the bottom (requires a standard 13 pin circular socket with a center hole, a standard US 13 pin circular socket can be drilled out to fit). These are classic tubes from Germany, like new condition pulls, all 100% tested. These test very well, great looking digits, and very bright, with an integral red contrast filter (can be removed by soaking in hot water). The lit images are at +170VDC and a 22K series resistor, its rated typical current is 2mA. The pins are tinned, appear to be solderable for the very brave. The digit height is 5/8 inch, width is 1 1/8 inch. CLICK HERE for full PDF data sheet. Datasheet covers Z560M, Z5600M, Z566M, Z5660M, Z568M, Z5680M, Z570M, Z5700M.         CLICK for bigger images. These tubes have very attractive, true form characters, fantastic appearance for clocks!. The hexagonal front anode has a very nice unique, high-tech appearance, same as the Mullard tubes.

Japanese Nixies, CD Series

CLICK for bigger PIC! NIXIE CD71	Hitachi Vertical view, solderable leads, 9mm digit height miniature NIXIE tubes. RH decimal point. Note that one lead has a red dot on the lead to identify it, but it is NOT the anode! View shows the mechanical pin orientation relative to the correct forward view of the tube. Works at >150V, 160V-170V/33K gives good results.	PIN FUNCTION Pin 1 ANODE Pin 2 K9 Pin 3 K1 Pin 4 K0 Pin 5 K2 Pin 6 K3 Pin 7 K4 Pin 8 K5 Pin 9 K7 Pin 10 K6 Pin 11 K8 Pin 12 K-RHDP
NIXIE CD90P	Hitachi Vertical view, solderable leads, 9mm digit height miniature NIXIE tubes. RH decimal point. Note that one lead has a red dot on the lead to identify it, but it is NOT the anode! View shows the mechanical pin orientation relative to the correct forward view of the tube. Works at >150V, 160V-170V/33K gives good results.	PIN FUNCTION Pin 1 ANODE Pin 2 K4 Pin 3 K9 Pin 4 K0 Pin 5 K1 Pin 6 K5 Pin 7 K3 Pin 8 K6 Pin 9 K2 Pin 10 K8 Pin 11 K7 Pin 12 K-RHDP

British Dekatrons, GC Series

GC10B Dekatrons CLICK for Ericsson Data sheet (PDF File) CLICK HERE for Frank's Vacuum Tube References, for GC10B data Prototype Spinner

Building Your Own Dekatron Spinner (115VAC/60Hz) CLICK for Bigger PIC! The incoming AC line voltage (115VAC) is rectifed and multiplied by the cascade multiplier. Under load, this produces +450VDC with about 100V of AC ripple, which is used to power the tube. Ripple can be reduced by increasing the capacitor size from 0.22uF, but the risk of shock goes up proportionally. This circuit stores very little energy, but can still be quite dangerous. CAUTION! The 0.22uF capacitors REMAIN CHARGED even with AC power removed, and must be carefully discharged if you will be working on the circuit! All capacitors should be rated at 250VDC or better, plastic film or similar types. The spinner takes the incoming 60Hz line frequency, and feeds it into the Dekatron counting input, so that it whirls around 6 times a second (divides by 10). Very visually entertaining, BUT be CAREFUL, 450VDC is present, and is potentially fatal if touched. The Varistor is shown to prevent line transients from damaging the circuit, you may want to add a power switch, etc. Ground NO PART of this circuit, and be sure everything is well insulated from any possible human contact. A pic of the Prototype is to the left.

Philips Nixies, ZM Series

ZM1080 ZM1082

Base diagram, view from bottom

RCA/Apollo Numitrons, DA, DR Series

DA/DR Series Numitrons DA-1300 DR1300 DA-1310 DR1320 DA-2000 DR2000 DA-2010 DR2010 DA-2020 DR2020 DA-2100 DR2100 DA-2110 DR2110 DA-2120 DR2120 DA-2300 DR2300 DA-2310 DR2310 DA-2320 DR2320

CLICK on the images for Full data sheets from IEE for these tubes, applies to IEE, Apollo and RCA tubes.

RCA Numitron Factory Data Sheets
DR2XXX Series

RCA Numitron Data, CLICK for a bigger PIC!	RCA Numitron Data, CLICK for a bigger PIC!
RCA Numitron Data, CLICK for a bigger PIC!	RCA Numitron Data, CLICK for a bigger PIC!

3015 Series Minitrons

MINITRON DISPLAY 3015-F

Data, CLICK for bigger PIC! MINITRON Miniature 16 PIN DIP Minitron incandescent 7-segment display. Vertical view, miniature size, filament type 7-segment tube, fully solderable, or fits in standard IC socket. Can be driven from conventional 7447 LED drivers, will display any color with filtering, great for clocks, no HV required, run from 3-9VDC, 5VDC optimum.

RUSSIAN Nixie Tubes

Part Number / Tube Image	Description
NIXIE IN-1 IN-1, CLICK for bigger PIC! IN-1 Physical Dimensions	IN-1 RUSSIAN STANDARD SIZED TUBES (these are physically larger than similar 5092/8421 style tubes) Standard horizontal view tubes, with plug in keyed bases (11 pins). These are classic tubes from the old soviet union Reflector factory, new old stock. These test very well, great looking digits, and very bright. Its rated current is 3mA. The digit height is 17mm, the overall width is approx. 35mm. The dimensional diagram is in millimeters. Great for clocks. The Anode (pin 11) is at the edge of the keyway pin gap (keyway is between 1 and 11). Note that the 2 and 5 are the same electrode, turned upside down. Click on the digits below to see them lit. IN-1 View from REAR Pin 1, K1 Pin 2, K2 Pin 3, K3 Pin 4, K4 Pin 5, K5 Pin 6, K6 Pin 7, K7 Pin 8, K8 Pin 9, K9 Pin 10, K0 Pin 11, Anode
Part Number / Tube Image	Description
NIXIE IN-2 IN-2, CLICK for bigger PIC! IN-2 Physical Dimensions	IN-2 RUSSIAN SUB-MINIATURE TUBES (these are physically larger than 7009/7977 and 4041 tubes, but interestingly, have the same pin circle with thicker pins) Sub-Miniature horizontal view tubes, with PC pins (tinned). These are classic tubes from the old soviet union Reflector factory, new old stock. These test very well, great looking digits, and very bright. The lit image is at only +140VDC, rated voltage is +170VDC , and a 47K series resistor, its rated current is 1.5mA. The digit height is only 9mm, the overall width is approx. 5/8 inch (19mm). The dimensional diagram is in millimeters. Great for Nixie Wristwatches, and seconds displays on larger clocks. The Anode (pin 11) is very easy to identify, it has white insulation inside, and is at the edge of the pin gap. IN-2 View from REAR Pin 1, K1 Pin 2, K2 Pin 3, K3 Pin 4, K4 Pin 5, K5 Pin 6, K6 Pin 7, K7 Pin 8, K8 Pin 9, K9 Pin 10, K0 Pin 11, Anode Pin 12, Removed
Part Number / Tube Image	Description
NIXIE IN-14	IN-14 RUSSIAN TUBES Standard vertical view tubes, with long flying leads. These are classic tubes from the old soviet union Reflector factory, new old stock. These test very well, great looking digits, and very bright. The lit images are at +170VDC (the rated voltage, but it will run much lower), and a 33K series resistor, its rated current is 2.5mA. The digit height is 18mm, the overall width is 19mm. The dimensional diagram is in millimeters. Great for Nixie clocks, easy to wire, no sockets required. The Anode (pin 1) is very easy to identify, it has white insulation inside, and is at back of the tube when the digits are facing you. The silicone base insulator improves the mechanical strength of direct board attachment, without damaging tubes. IN-14 View from Bottom Pin 1, Anode Pin 2, LHDP Pin 3, K1 Pin 4, K2 Pin 5, K3 Pin 6, K4 Pin 7, K5 Pin 8, K6 Pin 9, K7 Pin 10, K8 Pin 11, K9 Pin 12, K0 Pin 13, RHDP
Part Number / Tube Image	Description
NIXIE IN-16 IN-16, CLICK for bigger PIC!	IN-16 RUSSIAN MINIATURE TUBES Miniature vertical view tubes, with long flying leads. These are classic tubes from the old soviet union Reflector factory, new old stock. These test very well, great looking digits, and very bright. The lit images are at +170VDC (the rated voltage, but it will run much lower), and a 47K series resistor, its rated current is 1.5mA. The digit height is 13mm, the overall width is approx. 1/2 inch (13mm). The dimensional diagram is in millimeters. Great for Nixie clocks, and seconds displays on larger clocks. The Anode (pin 1) is very easy to identify, it has white insulation inside, and is at back of the tube when the digits are facing you. The silicone base insulator improves the mechanical strength of direct board attachment, without damaging tubes. IN-16 View from Bottom Pin 1, Anode Pin 2, K1 Pin 3, K7 Pin 4, K3 Pin 5, LHDP Pin 6, K4 Pin 7, K5 Pin 8, K6 Pin 9, K2 Pin 10, RHDP Pin 11, K8 Pin 12, K9 Pin 13, K0
Part Number / Tube Image	Description
IN-17, CLICK for bigger PIC! IN-17, CLICK for bigger PIC! NIXIE IN-17	IN-17 RUSSIAN SUB-MINIATURE TUBES (these are physically narrower than 7009/7977 and 4041 tubes, but have a slightly larger digit, and are taller) Sub-Miniature horizontal view tubes, with flying leads. These are classic tubes from the old soviet union (marked CCCP). These test very well, great looking digits, and very bright. The lit images are at +170VDC (the rated voltage, but it will run much lower), and a 47K series resistor, the tube runs well out to about 82K, its rated current is 1.5mA. The digit height is only 9mm, the overall width is approx. 1/2 inch (14mm). The dimensional diagram is in millimeters. Great for Nixie Wristwatches, and seconds displays on larger clocks. The Anode (pin 1) is very easy to identify, it has white insulation inside, and is at the edge of the pin gap. The silicone base insulator (which seesm to be in random colors) can be removed for a more compact assembly, but it will then leave the bottom glass seal exposed. Some have shiny anodes, some matte (less visible), but they look the same illuminated. IN-17 TOP View from REAR Pin 1, Anode Pin 2, K0 Pin 3, K1 Pin 4, K2 Pin 5, K3 Pin 6, K4 Pin 7, K5 Pin 8, K6 Pin 9, K7 Pin 10, K8 Pin 11, K9 Pin 12, Removed

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Late production Burroughs tubes, 5440 SERIES
16 pin miniature circular base. "A" versions have smooth top.

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CLICK HERE to download the National JPG factory datasheet (Includes 544X, 55XX and 58XX Tubes)

16 Pin Socket Identification, CLICK for bigger PIC. Note that the last 2 pins are normally NOT present, as they have no connections.

Pin #	B-5440/A	B-5441/A	B-5442/A	B-5448/A
Pin 1	Anode	Anode	Anode	Anode
Pin 2	K1	K1	-	-
Pin 3	K2	K2	K-	-
Pin 4	K9	K9	-	-
Pin 5	K7	K7	-	-
Pin 6	-	K-LHDP	K-LHDP	-
Pin 7	K8	K8	-	-
Pin 8	-	-	-	-
Pin 9	K3	K3	-	-
Pin 10	K4	K4	-	-
Pin 11	-	K-RHDP	K-RHDP	-
Pin 12	K5	K5	-	-
Pin 13	K6	K6	K+	-
Pin 14	K0	K0	-	-
Pin 15	-	-	-	-
Pin 16	-	-	-	-

Good illumination coverage/brightness achieved at +165-175VDC with a 27K to 33K series resistor.

Standard Burroughs tubes, large circular and oval bases.

13 Pin circular, CLICK images for bigger pics!

14 Pin oval, CLICK images for bigger pics!

Pin #			8421 B-5092 13 Pin Circular	8422 B-5991 14 Pin Oval
Pin 1			Do Not Connect	Anode
Pin 2			Anode	K0
Pin 3			K0	K9
Pin 4			K9	K8
Pin 5			K8	K7
Pin 6			K7	K6
Pin 7			K6	K5
Pin 8			Do Not Connect	K4
Pin 9			K5	K3
Pin 10			K4	K2
Pin 11			K3	K1
Pin 12			K2	-
Pin 13			K1	-
Pin 14				-

Wire lead miniature Nixie tubes, Burroughs, National, etc.

NIXIE NL-5870 PIN connections 12 Pin, 4 rows style.

VIEW FROM THE BOTTOM: Anode K6 K7 K5 K-LHDP K8 K4 K-RHDP NC K3 K9 K2 K0 K1

Believed to also match all related physical tube styles, like 5750, etc. How to make a socket with 0.1 inch socket strips:

NIXIE B-5971 B-7971 B-8971 Alphanumeric Nixie Tube Reference Data

ORIGINAL DATA SHEETS

CLICK SHEET THUMBNAILS to see!

17 Pin socket for B-7971, CLICK for bigger PIC!

17 Pin socket for B-7971, CLICK for bigger PIC!

Need Driver IC's? National DM7441AN Nixie Tube Driver IC

Positive logic, ABCD high inputs (low to high order) drive the outputs LOW to the equivalent value, 0-9. For example ABCD=1000=Display1, ABCD=1010=Display5, etc. The maximum tube supply voltage should not exceed +200V, +170VDC is optimal for most tubes. There is no provision for zero blanking.

We sometimes have them in STOCK (new, unused) CLICK HERE to order, we will supply them if we can.

HP Internal Nixie Tube/Panaplex Numbers, and Industry Equivalents

1970-0002	10 Digit, end view. Characters 0-9, Ionization at 170VDC, Anode current 2.2mA average. Diameter 1.040in. Seated height 1.060in. Known equivalents: Burroughs B5092, National Labs NL-5092.
1970-0009	14-pin, 10 Digit, end view. Known equivalents: Burroughs B5991, National Labs NL-5991.
1970-0012	14-pin, Polarity indicator, end-view. Ionization at 170VDC, Anode current 2.0mA average. Known equivalents: Burroughs B5992, National Labs NL-5992.
1970-0016	TUBE-ELECTRON NIXIE TUBE; NON-MERCURY TYPE; NUMERAL INDICATOR, 10 DIGIT; GAS FILLED; COLD CATHODE; 0.790 BY 1.020 BY 0.862 IN SEATED HEIGHT; 14 PIN BASE; IONIZATION 170 VDC MAX; CATHODE CURRENT 1.5mA MIN, 3.0mA. Known equivalents: Burroughs B5961, National Labs NL-5961.
1970-0017	TUBE-ELECTRON READOUT DEVICE; SIDE VIEWING, 10 DIGIT NUMERICAL INDICATOR. Known equivalents: Burroughs B5440, National Labs NL-5440.
1970-0018	TUBE-ELECTRON READOUT DEVICE; SIDE VIEWING; 10 DIGIT NUMERICAL, WITH RIGHT AND LEFT DECIMAL POINTS. Known equivalents: Burroughs B5441, National Labs NL-5441.
1970-0025	TUBE-ELECTRON READOUT DEVICE; 11 PIN; 10 DIGIT; SIDE VIEWING. Known equivalents: Burroughs B5560, National Labs NL-918/5560.
1970-0028	TUBE-ELECTRON SIDE VIEWING; 10 DIGIT NUMERIC; 0.610 IN HIGH NUMERALS, INVERTED 0.750 IN MAX DIA; 2.050 IN MAX HIGH; 14 PINS 0.050 IN DIA ON 0.650 IN DIA CIRCLE BASE. Known equivalents: Burroughs B5445, National Labs NL-5445.
1970-0032	TUBE-ELECTRON SIDE VIEWING: (PLUS)+; (MINUS)-; (OVERLOAD) Q; 0.610 IN NUMERAL HEIGHT NOM; 2.050 IN MAX HEIGHT OVERALL; 0.750 IN MAX DIA; 14 PINS 0.050 IN DIA ON 0.650 IN DIA CIRCLE BASE. Known equivalents: Burroughs B5448, National Labs NL-987.
1970-0035	TUBE-ELECTRON IND-ALPHANUMERIC; 0 TO 9; RIGHT/LEFT. Known equivalents: Burroughs B5441-A, National Labs NL-5441A.
1970-0037	TUBE-ELECTRON NIXIE TUBE; READOUT: MV; GAS FILLED; COLD CATHODE; SIDE VIEW- ING; 0.750 BY 2.050 IN LONG; 1.80 SEATED HEIGHT; IONIZATION 170 VDC MAX; CATHODE CURRENT 3.5 MA MAX. Known equivalents: Burroughs B5450, National Labs NL-988.
1970-0042	INDICATOR-ALPHANUMERIC; 0 TO 9; LEFT RIGHT; ORDER ITT 5870 ST TUBE. Known equivalents: Burroughs B5870ST, National Labs NL-5870ST, Richardson Electronics 1970-0042.
1970-0047	TUBE-ELECTRON READOUT DEVICE; + AND - INDICAT- OR; GAS FILLED, COLD CATHODE, SIDE VIEWING; IONIZATION= 170VDC MAX; 0.750 IN DIA MAX; 1.750 IN OVERALL LENGTH; 1.500 IN SEATED HEIGHT. Known equivalents: Burroughs B5442A, National Labs NL 5442A.
1970-0054	INDICATOR-NUMERIC; 14 PIN; 10 DIGIT; SIDE VIEW. ORDER ITT 5870 S TUBE. Known equivalents: Burroughs B5870S, National Labs NL-5870S, Richardson Electronics 1970-0054.
1970-0066	TUBE-ELECTRON IND-NUMERIC; 20 PIN; 2 DIGIT; 7 SEGMENT. Known equivalents: Babcock Electronics SP-352, Beckman Industries SP-352.
1970-0067	TUBE-ELECTRON IND-NUMERIC; 20 PIN; 1.5 DIGIT; 7 SEGMENT. Known equivalents: Babcock Electronics SP-351, Beckman Industries SP-351.
1970-0071	TUBE-ELECTRON IND-NUMERIC; 16 DIGIT; .250 IN CHAR. Known equivalents: Vishay Intertechnology Inc. 2215804, Burroughs BR16252.

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