Data set 01
1948 Brimar Radio Valve Manual
Published operating points and test conditions from this source.
SECTION 1
Diode
Other
RMS Input
50 V
Maximum
Rectified Current
1 mA
Maximum
Diode (NOT rectifier) ·Diode-Diode
10D1
Double-diode receiving valve for detector and low-level signal-rectification duties in radio receivers. Two diode sections provide paired detection or control-voltage functions from one compact envelope.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 13 V / 200 mA
Description
10D1 Double Diode Vacuum Tube
The 10D1 is a vacuum tube designated as a double diode, primarily intended as a replacement type. It features an English base configuration and is designed for low-current rectification or detection applications.
Overview
The 10D1 is a specialized double diode vacuum tube designed for replacement purposes. It is housed in a glass envelope and utilizes a classic English base. The device is characterized by a 13.0-volt heater and is rated for low-current, low-voltage applications, with a maximum rectified current of 1.0 mA.
Physical Specifications and Pin Configuration
The 10D1 is constructed with a glass bulb envelope. Its physical dimensions are specified as follows:
- Maximum Diameter: 1 9/16 inches
- Maximum Overall Height: 3 1/16 inches
The tube features a 5-pin English base. The pin assignments, as viewed from the bottom of the tube base, are:
- Pin 1: Diode 1 (DI)
- Pin 2: Diode 2 (D2)
- Pin 3: Heater (H)
- Pin 4: Heater (H)
- Pin 5: Cathode (C)
A metallisation or shield connection, designated as S, is also indicated on the outer perimeter of the base diagram.
Electrical Characteristics and Ratings
The electrical parameters of the 10D1 are defined by its heater requirements and its maximum operating limits. The tube's key electrical characteristics include:
- Heater Voltage: 13.0 volts
- Heater Current: 0.2 amperes
- Maximum R.M.S. Input Voltage: 50 volts
- Maximum Rectified Current: 1.0 mA
These ratings indicate that the 10D1 is designed for small-signal detection or low-power rectification tasks, where high voltage and high current handling are not required.
Characteristic Curves
No individual characteristic curves are published directly for the 10D1. Instead, the operating curves and diode characteristics of this tube are equivalent to those of the 6AL5 double diode. For detailed graphical analysis of diode behavior, plate current, and voltage relationships, reference must be made to the characteristic curves of the 6AL5.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 13 V
- Nominal heater current
- 200 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Diode
X-ray radiationInterelectrode capacitances
- Max cathode current
- 1 mA
Brimar 10D1 double-diode receiver detector/low-level rectifier. One of two physical diode sections; 13.0 V, 0.2 A heater. Manufacturer lists maximum rectified current 1.0 mA and maximum RMS input 50 V, which is not a continuous DC positive anode-voltage maximum. Physical diode sections are separate, not compressed.
Section 2
Diode
X-ray radiationInterelectrode capacitances
- Max cathode current
- 1 mA
Second physical detector diode of Brimar 10D1, using a common 13.0 V, 0.2 A heater. Maximum rectified current 1.0 mA per manufacturer and 50 V RMS input limit; the latter must not be confused with a DC anode maximum. Both diode sections represented individually.
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.