Power Relay T78L-DC12V-C SPDT 12VDC Coil 20A (1 Form C) Through Hole 5 Pin
The Power Relay T78L-DC12V-C presents a compact, through-hole single-pole double-throw (SPDT) design engineered for dependable switching in demanding electrical environments. Housed in a robust thermoplastic case, it balances durability with a small footprint suitable for dense PCB layouts. Its 12VDC coil is tuned for responsive operation, delivering consistent actuation and reliable mechanical life across repetitive cycles without introducing unnecessary bulk to the assembly.
Internally, precision contacts and a stable armature mechanism provide a crisp switching action that minimizes contact bounce and electrical noise. The relay’s construction emphasizes thermal stability and repeatable performance under varying load conditions, making it a sensible choice where predictable behavior and long service intervals are required. Attention to manufacturing tolerances ensures consistent coil pull-in and drop-out characteristics.
Installation is straightforward thanks to the five-pin through-hole configuration which secures the component firmly to the board while simplifying hand-soldering and wave-solder processes. The T78L’s combination of high-current handling and conservative mechanical design makes it adaptable to a wide range of control, automation, and protective circuitry, where reliable switching and physical resilience matter most. Engineers appreciate its predictable behavior during thermal cycling and maintenance-free operation over extended deployments. in industrial and consumer systems.
Features:
- SPDT (single-pole double-throw) contact arrangement.
- Through-hole, five-pin footprint for secure PCB mounting.
- Compact, space-saving package suitable for dense assemblies.
- Robust, low-wear contact system for repeatable switching.
- Stable, well-damped armature for reduced contact bounce.
- Designed for high-current switching capability (qualitative).
- Durable thermoplastic housing for electrical insulation and protection.
- Predictable coil actuation for consistent pull-in/drop-out behavior.
Specifications:
| Specification | Value |
|---|---|
| Model: | T78L-DC12V-C |
| Coil Voltage: | 12 VDC |
| Contact Configuration: | SPDT (1 Form C) |
| Contact Current Rating: | 20 A |
| Mounting Type: | Through-hole |
| Pin Count: | 5 |
| Coil Type: | DC |
Pinout:
Applications:
- Industrial control systems.
- Motor control and drive circuits.
- HVAC control modules.
- Power supply switching and protection.
- Automotive and vehicle electronics.
- Home appliances and consumer electronics.
- Battery management and charging systems.
- Building automation controllers.
Package Contents:
- 1x Power Relay T78L-DC12V-C SPDT 12VDC Coil 20A (1 Form C) Through Hole 5 Pin