SONGLE SMI-12VDC-SL-2C Power Relay 2-Ch 12VDC Coil 5A 250VAC/30VDC 8 Pin
The SONGLE SMI-12VDC-SL-2C is a compact, sealed two-pole changeover (2-C) power relay in an 8-pin PCB package. Designed for PCB solder mounting, it packages two SPDT contact sets in one small footprint so designers can switch two independent circuits or provide double-pole switching for higher safety and isolation. The relay is intended for general power-control use where a small form factor, reliable contact switching and moderate load capacity are required.
This relay uses metal alloy contacts (options include AgCdO, AgSnO₂, AgNi) and a coil driven at 12 VDC for the SMI-12VDC variant. It is a sealed construction (S = sealed, F = dust-proof versions exist) with a spring-type contact mechanism that yields consistent make/break behaviour. Typical operate and release times are short (≤ 10 ms), enabling responsive switching in control circuits.
The SMI series is specified for wide environmental range (–40 °C to +85 °C) and rated for vibration and shock typical of industrial use. Insulation and dielectric values are high meeting reinforced insulation spacing and strong coil-to-contact dielectric withstand ratings so it is suitable where safety isolation and reliable long-term switching are needed. The relay’s small mass (~15 g) and PCB footprint make it a convenient choice for compact power/control modules.
Features:
- Dual changeover contact configuration (2-C / two SPDT contacts).
- 5 A power contact rating for general AC/DC loads.
- Sealed (S) and dust-proof (F) package options for protection.
- Compact PCB-mount design for easy soldering to printed circuit boards.
- Contact materials: AgCdO, AgSnO₂ or AgNi available for different load types.
- Fast operate and release (≤ 10 ms).
- Wide operating temperature range: −40 °C to +85 °C.
Specifications:
| Parameter | Value (from datasheet) |
|---|---|
| Model: | SMI-12VDC-SL-2C (SMI series, 2-pole changeover). |
| Contact form: | 2C (two changeover/SPDT sets). |
| Rated contact current: | 5 A (for resistive/standard loads). |
| Maximum switching voltage: | 250 VAC (as referenced in datasheet). |
| Maximum switching power: | 1250 VA (typical rating shown). |
| Contact resistance: | 100 mΩ (initial, typical maximum). |
| Contact material: | AgCdO, AgSnO₂, AgNi (options). |
| Coil rated voltage (this variant): | 12 VDC (SMI-12VDC). |
| Coil power: | L: 0.54 W / D: 0.72 W (datasheet lists L / D coil power figures). |
| Must-operate / must-release: | Operate time ≤ 10 ms; Release time ≤ 10 ms (at rated voltage). |
| Insulation resistance: | 100 MΩ (measured at 500 V DC). |
| Dielectric strength (coil ↔ contacts): | 5000 VAC, 1 min (datasheet). |
| Dielectric strength (between open contacts): | (see datasheet — specified value shown in table). |
| Ambient / operating temperature: | −40 °C to +85 °C. |
| Shock resistance: | 98 m/s² (functional), 980 m/s² (destructive) values listed. |
| Vibration resistance: | 10 Hz – 55 Hz, 1.5 mm double amplitude. |
| Weight: | ≈ 15 g. |
| Mounting / package: | PCB solder mount, 8-pin. Footprint & pinout per datasheet drawing. |
| Life expectancy (electrical / mechanical): | See datasheet tables for electrical/mechanical life figures (datasheet lists rated life cycles). |
Dimensions:
Applications:
- General power switching in control circuits.
- Household and consumer appliance switching.
- Industrial control and automation modules.
- Power supply and distribution switching.
- Test equipment and instrumentation.
Package Contents:
- 1x SONGLE SMI-12VDC-SL-2C Power Relay 2-Ch 12VDC Coil 5A 250VAC/30VDC 8 Pin
Reviews
There are no reviews yet.