CD47/GR-411 (Rodan) Nixie Röhre/ Nixie Tube

WER HAT MEHR VON DIESEN RÖHREN??? BITTE EMAIL AN MICH!



 

Drawing:

 

Socket/ Base:

Pinout- Ansicht von unten / Pinout- Bottom View
Pfeil zeigt Blickrichtung /
Arrow shows direction of viewing!

 

Connection

Tube Pin

 

Tube Pin

Connection

Anode

12

 

1

1

0

10

 

2

2

1

1

 

3

3

2

2

 

4

4

3

3

 

5

5

4

4

 

6

6

5

5

 

7

7

6

6

 

8

8

7

7

 

9

9

8

8

 

10

0

9

9

 

11

NC

NC

11

 

12

Anode

Röhrendaten/ Tube Data:

Röhrendaten/ Tube Data
   
Brand: Rodan
Manufacturer: Okaya Electric Industries Company, Limited
Made in: Tokyo, Japan
Tube Type: CD47/GR-411 similar to CD47/GR-414
Overall Height: 220mm (8 ¼ = 8.66") including pins and center post
Diameter Base: 72mm (2.83")
Digit Height: 135mm (5 1/8 = 5.31") tall numerals 0-9
Base: B12A (Duodecal Base)
Displayed Symbols: 0-9
Min. Supply: 250V
Min. Ionization: 250V
Typical maint. Volt. 160V
Min. Cathode Curr. 17.5mA
Typ. Cathode Curr. 25mA
Max. Cathode Curr. 32,5mA
Nuber of Pins: 12
Pin Diameter 2.36mm (= 0.093")
Pin Circle: 27mm (= 1.063")
Pin Spacing: 30°
Pin Length: 11.1 mm
   
Spigot: 15.5mm (0.610") dia. Splined Center Spigot
Aligment Method: Spline in Front
   
Minimum Supply Voltage: 250VDC
Recommended Plate Resistor for 250VDC: 5.1kOhms / 1Watt
Recommended Plate Resistor for 300VDC: 6.8kOhms / 2Watt
Plate Voltage: 200VDC
Min Cathode Current 17.5mA
Average Cathode Current 25mA
Max Cathode Current 32.5mA
Abs.max Kathode Current 35mA
Storage Temperature Range: -65 to +70°C
Operating Temperature Range: -10 to +55°C
Weight: 230g

I have made measurements on that tube with the following results:

CD47/GR-411 (used):
Ufiring = 140-145 V
Umaintaining = 142-148V (@ Ik = 25mA)

CD47/GR-414 (NIB and used):
Ufiring = 120-133 V
Umaintaining = 143 - 155V (@ Ik = 25mA)

So what we see:
Both will work on my power supply wich has 160 to 180 V adjustable. If I would use a 250V supply, the losses would increase. So I will go right with 170 Volts.
I can use it for my second and third CD47 clock.

Downloads/Datasheets:

Sie finden passende Datenblätter im Datenblattarchiv.
Suchen sie dort nach dieser Type und deren Vergleichstypen.

You'll find the matching datasheets in the datasheet archive.
Search for this type and its substitutes there.


Back to Dieter's Nixie Tube Page

eMail to Dieter
Disclaimer
Impressum