B5030

Cold-cathode numeric or character indicator cross-referenced in German comparison data to RFT Z8700M. The source explicitly cautions that comparable types need not be electrically identical, so the comparison establishes function without proving exact RFT ratings.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 9-12 TGL 11608
Socket code: B9A
Base pins: -
Nominal heater: -

Description

B5030 is a cold-cathode numeric or character indicator tube listed in the supplied German comparison catalog as comparable to RFT type Z8700M. 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

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 9-12 TGL 11608
Socket code: B9A
Base pins: -
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9-12 TGL 11608 - 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

Regulator starting voltage: 150 V
Regulator maintaining voltage: 140 V

Cold-cathode display section; promoted starting/maintaining voltages are anode striking/burning values published for comparable RFT type Z8700M.

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

1971 Nixie RFT

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

Comparable RFT Type
Z8700M
Catalog cross-reference; comparable types are not guaranteed identical
Minimum Operating Supply Voltage
170 V
Published for comparable RFT type Z8700M
Cathode Current Minimum
3 mA
Published for comparable RFT type Z8700M
Peak Cathode Current
7 mA
Published for comparable RFT type Z8700M
Ambient Temperature Minimum
0 °C
Published for comparable RFT type Z8700M
Ambient Temperature Maximum
70 °C
Published for comparable RFT type Z8700M
Maximum Bulb Height
49.2 mm
Published for comparable RFT type Z8700M
Maximum Bulb Diameter
22.2 mm
Published for comparable RFT type Z8700M

Characteristic

Anode Striking Voltage
150 V
Published for comparable RFT type Z8700M
Anode Maintaining Voltage
140 V
Published for comparable RFT type Z8700M