Description
HGJR05-1AM Mercury Wetted Reed Relay for engineering selection. Coil 5 VDC. 1 Form A contact. 500V ACpeak/DC switching. 100 W rating. Values are organized from the professional datasheet for engineering pre-selection. Confirm final switching load, insulation and footprint before order.

Technical specifications
| Nominal coil voltage | 5 VDC |
|---|---|
| Max Operating voltage | 7 VDC |
| Max Pull-in voltage | 4 VDC |
| Min Drop-out voltage | 0.5 VDC |
| Coil Resistance | 125 ohm |
| Min Breakdown Voltage | 4K VDC |
| Contact Form | 1 Form A |
| Max Contact Rating | 100 W |
| Max Switch Voltage | 500V ACpeak/DC |
| Max Switch Current | 2.0 A |
| Max Carrying Current | 5.0 A |
| Max Contact Resistance | 80 mohm |
| Dielectric Strength, Open Contacts | 4K VDC |
| Dielectric Strength coil/contact | 4K VDC |
| Dielectric Strength contact/shield | 4K VDC |
| Insulation Resistance (500V, 25℃ 40%RH) | 10^9 Ω min |
| Operate Time | 1.8ms max |
| Reset Time | 1.8ms max |
| Life Expectancy | 5×10^7 ops (at 500VDC-100mA) |
| Vibration (0~2000Hz) | 20G |
| Shock (11ms, 1/2 sine wave) | 50G |
| Operating Temperature | -20~+70℃ |
| Storage Temperature | -35~+105℃ |
| Soldering Temperature | 5 sec.max 260℃ |
Selection notes
- Separate switching voltage from dielectric/breakdown withstand voltage.
- Check contact form, coil drive and PCB/package outline before design-in.
- For HRM modules, confirm terminal wiring and panel/cabinet installation requirements.






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