In terms of performance, the SRA-U(T74-U) Relay demonstrates a core advantage that balances stability and durability: a low-loss design with a contact resistance of ≤100mΩ, coupled with 10⁵ electrical cycles and 10⁷ mechanical cycles, ensures conduction stability under long-term high-frequency operation; a wide nominal voltage range of 5-24VDC and a low-power coil of 0.6W/0.8W adapt to diverse circuit design needs. Simultaneously, the product features a wide operating temperature range of -40℃ to +105℃, a 1500VAC coil-contact withstand voltage, and a high insulation resistance of 100MΩ, providing outstanding safety protection capabilities. The PCB terminal design simplifies the installation process. Leveraging Songle's integrated R&D and production system (including mold manufacturing and rubber and plastic processing) and an annual production capacity of 200 million units, the product maintains high cost-effectiveness while providing customers with relay solutions that combine consistent quality and scenario adaptability.
Small size
Double NO contacts
Standard terminal pitch employed
Sealed and flux proofed types available
| Contact Parameters | |
| Contact arrangement | U |
| Contact rating | 2×10A 125VAC, 2×10A 14VDC |
| Contact resistance | ≤100mΩ |
| Electrical endurance | 10⁵ / 10⁴ |
| Mechanical endurance | 10⁷ |
| Coil Parameters | |
| 5–24VDC | |
| Power dissipation | 0.6W, 0.8W |
| Pick-up voltage(Max) | 75% of nominal voltage |
| Drop-out voltage(Min) | 10% of nominal voltage |
| Other Parameters | |
| Ambient temperature | –40°C~+85°C/+105°C |
| Dielectric strength (Between coil and contacts) | 1500VAC (1min) |
| Dielectric strength (Between open contacts) | 1000VAC (1min) |
| Insulation resistance (500VDC) | 100MΩ |
| Wiring diagram (Bottom view) |
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| Installation hole drawing (Bottom view) | |
| Termination | P.C.B. |
| Weight | 6g |
| Safety approval | |
Address
CW7, Area A, Zhejiang Yuandong Industrial City, Yuyao City, Zhejiang Province, China
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