B7037

Gas-filled cold-cathode Nixie numerical indicator designed to display decimal digits by selective glow discharge of shaped cathodes.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 17-35
Socket code: SK137
Base pins: -
Nominal heater: -

Description

B7037 is a cold-cathode numeric or character indicator tube listed in the supplied German comparison catalog as comparable to RFT type Z5680M. The catalog provides electrical and mechanical data for that RFT type, including anode striking, maintaining, and operating limits. The source cautions that comparable types are not necessarily electrically identical, so the mapped RFT values are retained as comparison data rather than asserted as exact original-manufacturer ratings.

Socket description

SK-137 / RTS-5 17-contact large Nixie socket family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 17-35
Socket code: SK137
Base pins: -
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

17-35 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Nixie

X-ray radiationInterelectrode capacitances

Max cathode current: 7.5 mA
Regulator starting voltage: 150 V
Regulator maintaining voltage: 140 V

Special-purpose display/switching section. Published non-promoted ratings are retained in TUBE_SECTION_PARAMETER.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1963 Burroughs

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

Ionization Voltage
200 V
Supply Voltage
200 V
Peak Cathode Current
7.5 mA
Typical Supply Voltage
200 V
Series Resistance
9100 ohm
Cathode Current Minimum
4 mA
Cathode Current Maximum
7 mA

Data set 02

1971 Nixie RFT

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

Comparable RFT Type
Z5680M
Catalog cross-reference; comparable types are not guaranteed identical
Minimum Operating Supply Voltage
200 V
Published for comparable RFT type Z5680M
Cathode Current Minimum
4 mA
Published for comparable RFT type Z5680M
Cathode Current Maximum
7 mA
Published for comparable RFT type Z5680M
Peak Cathode Current
25 mA
Published for comparable RFT type Z5680M
Ambient Temperature Minimum
-10 °C
Published for comparable RFT type Z5680M
Ambient Temperature Maximum
50 °C
Published for comparable RFT type Z5680M
Maximum Bulb Height
100 mm
Published for comparable RFT type Z5680M
Maximum Bulb Diameter
50 mm
Published for comparable RFT type Z5680M

Characteristic

Anode Striking Voltage
150 V
Published for comparable RFT type Z5680M
Anode Maintaining Voltage
140 V
Published for comparable RFT type Z5680M
Anode Extinction Voltage
120 V
Published for comparable RFT type Z5680M