3JB20-3 Miniature Magnetic Latching Relay

  • This product is one of the earliest military standard varieties, and all technical indicators meet the requirements of general specification GJB1461. The product is standard cubic inch shape, with small size, high environmental grade and long switching life. Suitable for use as switching circuits in aerospace and avionics systems.

Description

3JB20-3 Miniature Magnetic Latching Relay

Environmental Characteristics

No. Parameter Environmental Specification
1 Quality Grade Ⓙ, (G) GJB Aerospace

(CAST)

II
2 Temperature Range (℃) -55~125 -65~125
3 Relative Humidity (40±2) ℃, 90%~95%
4 Low Pressure (kPa) 0.67~0.27 0.67~0.13
5 Sinusoidal Vibration (Hz) 10~2000
(m/s2) 147 196
6 Random Vibration (m/s2)2/Hz 30
7 Shock (m/s2) 490 735 1960
8 Acceleration (m/s2) 490 735

 

Main Characteristics

(The following table list GJB product indicators, other quality levels, please refer to their respective specifications)

Contact arrangement 3PDT Operating Time(ms) ≤10
Coil Power (W) 2.9 Release Time(ms)
Leak Rate (Pa.cm3/s) ≤1×10-3 Load Ratings Resistive 15A, 28 Vd.c.
Contact Resistance(Ω) Initial ≤0.01 Inductive 7A, 28 Vd.c.
After Life ≤0.012 Lamp 3A, 28 Vd.c.
Insulation

Resistance (MΩ)

Normal ≥500(500Vd.c.) Motor 6A, 28 Vd.c
High Temp./Humidity ≥50(500Vd.c.) Overload Rating Resistive, 60A, 28V d.c.
Dielectric

Strength (50Hz)

Normal 1050 Vr.m.s
Low pressure 500 Vr.m.s Life Time (Cycles) 1×105
Weight(g) ≤70 Failure Rate Y level

 

Electrical Specification (Vd.c.)

No. Coil Voltage 25℃ Overall temperature range
Normal Max Coil resistance

(1±10%) Ω

Pick-up Voltage

max

Drop-out Voltage

(min)

Pick-up Voltage

max

Drop-out Voltage

(min)

028 28 31 270 18 23

 

Dimensions
Mounting Style: C (2) Mounting Style: B (3)
Note: Vibration sensitive direction: Vertical

 

Circuit Diagram Resistive Load Diagram

 

Order Mark

  • GJB standard product:

Example: J1461-92/ Q/RY20002-99-028Y/C3 3JB20-3

J 1461-92 / Q/RY20002-99 028 Y / C 3 3JB20-3
Military sign General specification Detailed specification No. Coil voltage Failure rate Mounting style Terminal type Product number

Detailed specification: Q/RY20002-1999

 

  • CAST grade product:

Example: J1461/ Q/RY20002-99-028 Y/C3 3JB20-3

J 1461 / Q/RY20002-99 028 Y / C 3 3JB20-3
Military sign General specification Detailed specification No. Coil voltage Failure rate Mounting style Terminal type Product number

Detailed specification: CASTPS06/032-2006

 

  • G grade product:

Example: 3JB20-3/II28 C

3JB20-3 / II 28 C
Product number Environmental rating Coil voltage Mounting style

Detailed specification: Q/RYJ0186-2004