Description
SMD-103
SMD Reed Relay, 3.3V Coil, 1 Form A
The SMD-103 is a surface-mount reed relay in a compact SMD package for automated PCB assembly. Driven by a 3.3VDC coil, it offers 10W contact rating with fast operate time of 0.25ms, suitable for high-volume telecom, test and industrial applications.
Key Specifications
| Package | SMD, surface mount |
| Contact form | 1 Form A |
| Nominal coil voltage | 3.3 VDC |
| Max operating voltage | 4 VDC |
| Max pull-in voltage | 2.5 VDC |
| Min drop-out voltage | 0.4 VDC |
| Coil resistance | 70 Ω |
| Max contact rating | 10 W |
| Max switching voltage | 170VDC / 120VAC |
| Max switching current | 0.5 A |
| Max carrying current | 1.0 A |
| Min breakdown voltage | 210 VDC |
| Max contact resistance | 150 mΩ |
| Dielectric strength | 1.5 KVDC (contact/shield, coil/contact) |
| Insulation resistance | 1.00×1012 Ω |
| Operate time (incl. bounce) | 0.25 ms |
| Reset time | 0.05 ms |
| Operating temperature | -35°C to +100°C |
| Soldering temperature | 260°C max, 5 sec |
Key Highlights
- SMD package for automated assembly
- Fast operate time
- Low contact resistance
- Magnetic shield option (MSG series)
- Suitable for reflow soldering
Applications
- Telecom and communication equipment
- Automatic test equipment
- Industrial control systems
- High-volume consumer electronics
Specifications per the SMD-103 datasheet (SHR). Refer to the datasheet for outline dimensions and pad layout.







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