Overview
The Panasonic TX2SA-5V is a general-purpose SMD signal relay from the TX Series, widely used in industrial automation and control systems. This DPDT relay features a 5VDC coil with low power consumption and gold-clad silver alloy contacts for reliable, long-life switching. The compact form factor makes it ideal for PCB-mounted applications in space-constrained designs.
Key Features
- Double-Pole Double-Throw (DPDT) contact configuration for versatile switching applications
- 5VDC coil with 140 mW nominal power consumption—low-power signal relay design
- 178Ω coil resistance enables direct logic-level drive in microcontroller circuits
- 2A rated contact current at 30VDC for reliable switching of moderate loads
- High isolation voltage: 2000V AC between coil and contacts; 1000V DC between open contacts
- Au-clad Ag alloy contacts ensure stable, low-resistance switching with minimal contact bounce
- Compact SMD package (15 × 7.4 × 8.4 mm) for high-density PCB layouts
Technical Specifications
- Coil Voltage: 5 VDC (nominal)
- Coil Resistance: 178 Ω
- Coil Power: 140 mW
- Contact Configuration: 2 Form C (DPDT)
- Contact Current Rating: 2 A @ 30 VDC
- Contact Voltage: 220 VDC max switching voltage
- Switching Power: 60 W
- Coil-to-Contact Isolation: 2000 V AC
- Contact-to-Contact Isolation: 1000 V DC
- Contact Material: Silver alloy with gold plating
- Relay Type: Non-latching, monostable
- Mounting Style: Surface Mount (SMD)
- Package Dimensions: 15 × 7.4 × 8.4 mm
- Operating Temperature: −40 °C to +85 °C
- Series: TX Series
Typical Applications
- Industrial Control Systems: Signal relay switching in PLCs, automation controllers, and distributed I/O modules
- Automotive Electronics: Body control modules, lighting control, and relay-based load switching
- Control Panels: Electrical panel relay banks and remote switching circuits
- Industrial Machinery: Motor control circuits, solenoid drivers, and load switching
- Telecommunications Equipment: Rack-mount relay arrays and signal routing
- Test & Measurement: Automated test equipment requiring reliable RF or audio switching
Compatibility & Replacements
Compatible With
- 5VDC logic-level circuits and microcontroller outputs (Arduino, PLC coil drivers, TTL/CMOS logic)
- Industrial control platforms requiring DPDT signal relay switching
- Automotive body control module and comfort electronics
- PCB assembly with standard 0.1″ pitch or 2.54 mm pitch SMD footprints
- IEC 61810 standard industrial relay socket compatibility (verify footprint)
Replaces / Drop-In Replacement For
- Panasonic TX2SA-5V and TX2SA5J variants
- Similar 5V DPDT SMD relays in the TX Series family
- Legacy Matsushita Electric Works TX2-5V and TX2SA-5V designations
Works With
- PLC coil outputs and 5V logic circuitry
- Standard PCB design tools and ECAD libraries (TX2SA-5V footprint)
- Surface-mount assembly (SMD/reflow) processes
- Industrial signal relay ecosystems requiring DPDT switching
- Automotive and telecom relay standards (IEC 61810-1)
