4JB5-2 Miniature Magnetic Latching Relays
Environmental Characteristics
| No. | Parameter | Environmental Condition | |||||
| 1 | Quality Grade | Ⓙ, G | G5B | Aerospace | GJB | ||
| II | IV | ||||||
| 2 | Temperature range | (℃) | -55～85 | -65～125 | |||
| 3 | Relative Humidity | (40±2) ℃, 90%～95% | — | ||||
| 4 | Low Pressure | (kPa) | 0.67～0.27 | 0.67～0.13 | 0.67～0.27 | 4 | |
| 5 | Sinusoidal vibration | (Hz) | 10～2000 | ||||
| (m/s2) | 147 | 196 | |||||
| 6 | Random vibration | (m/s2)2/Hz | — | 25 | — | 20 | |
| 7 | Shock | (m/s2) | 490 | 735 | 784 | 980 | 735 |
| 8 | Constant Acceleration | (m/s2) | 490 | 735 | 490 | 735 | |
Main Characteristics
(The following main technical indicators are listed in the GJB and CAST grade product specifications. For other quality grade product parameters, please refer to the respective specifications.)
| Contact arrangement | 4PDT | Action Time (ms) | ≤10 | ||
| Coil Power (W) | 1.4 | Release time (ms) | — | ||
| Leak Rate (Pa.cm3/s) | ≤1×10-3 | Contact load | Resistive I | 5A, 28 Vd.c. | |
| Contact resistance (Ω) | Initial | ≤0.03 | Resistive II | 3A, 50 Vd.c. | |
| After Life | ≤0.1 | Inductive | 0.2A, 28 Vd.c., 200mH | ||
| Insulation resistance (MΩ) | Normal | ≥10000(100Vd.c.) | Lamp | 0.2A, 28 Vd.c. | |
| High Temp./ Humidity | ≥100(100Vd.c.) | Low level | 10μA～50μA, 10mV～50mV | ||
| Dielectric withstand voltage (50Hz) | Normal | 500 Vr.m.s | Life time (cycles) |
Grade I: 1×105 Grade II: 1×104 |
|
| Low pressure | 250 Vr.m.s | ||||
| Weight(g) | ≤50 | Overload Rating | Resistive, 10A, 28 Vd.c. | ||
| Failure Rate | L level | ||||
Electrical Specification
(The following main technical indicators are listed in the GJB and CAST grade product specifications. For other quality grade product parameters, please refer to the respective specifications.)
| Specification number | Coil Voltage | 20℃ | Overall temperature range | ||||
| Normal | Max | Coil resistance
(1±10%) Ω |
Operating voltage (max) | Release voltage (min) | Operating voltage (max) | Release voltage (min) | |
| 028 | 28 | 30 | 560 | 18 | — | 26(24) | — |
Dimensions |
|
 Note: Vibration sensitive direction: Vertical |
|
Circuit Diagram |
Resistive Load Diagram |
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Order Mark
- GJB grade products:
Example: J65 /RY20031-028 L/3 2 4JB5-2
| J | 65 | / | RY20031 | – | 028 | L | / | 3 | 2 | 4JB5-2 |
| Military sign | General specification | Detailed specification No. | Coil voltage | Failure rate | Mounting style | Terminal type | Product number |
Detailed specification: Q/RY20031-2003
- CAST grade products:
Example: 4JB5-2- 28BZ1
| 4JB5-2 | – | 28 | B | Z1 |
| Product number | Coil voltage | Mounting style | Quality Level |
Detailed specification: CASTPS06/002A-2008
- (G5B) Grade military products:
Example: 4JB5-2/II28 B
| 4JB5-2 | / | II | 28 | B |
| Product number | Environmental rating | Coil voltage | Mounting style |
Detailed Specification: Q/RYJ0115-91
- G and J grade products:
Example: 4JB5-2/II28 B
| 4JB5-2 | / | II | 28 | B |
| Product number | Environmental rating | Coil voltage | Mounting style |
Detailed specification: RY0.453.004JT
