Infineon PVT412LS Solid State Relay: Features, Specs & Applications
Infineon PVT412LS Solid State Relay: In-Depth Technical Guide
The PVT412LS from Infineon Technologies remains a noteworthy surface-mount solid-state relay (SSR) despite its obsolete status. This comprehensive guide examines its electrical characteristics, real-world applications, and why engineers still source this component for legacy systems and cost-sensitive designs.
PVT412LS Product Highlights
- Relay Type: SPST-NO (Form A) configuration
- Voltage Range: 0-400V AC/DC load compatibility
- Current Capacity: 120mA continuous load
- Package: 6-SMD (7.62mm) gull-wing design
- On-Resistance: 35 maximum
Detailed Technical Specifications
Electrical Parameters
| Parameter | Value |
|---|---|
| Input Voltage | 1.2VDC (min activation) |
| Load Voltage | 0-400V AC/DC |
| Load Current | 120mA max |
| On-State Resistance | 35 max |
| Isolation Voltage | 3750Vrms |
Mechanical Characteristics
- Dimensions: 9.9mm x 7.62mm x 3.3mm
- Termination: Gull-wing leads (0.65mm pitch)
- Weight: 0.33g typical
- Mounting: Surface mount (SMD)
Key Advantages Over Mechanical Relays
The PVT412LS offers distinct benefits for electronic designs:
- Longer Lifespan: 10^8 operations vs 10^6 for electromechanical relays
- Silent Operation: No audible clicking during switching
- Faster Response: Turn-on time <1ms
- Shock Resistant: No moving parts to degrade
Industry Applications
Industrial Control Systems
Used in PLC output modules for controlling small solenoids, pneumatic valves, and indicator lights in harsh environments.
Medical Equipment
Reliable switching for diagnostic devices where EMI suppression is critical.
Energy Management
Smart meter applications requiring precise low-power switching.
Automotive Electronics
Secondary systems like interior lighting controls and sensor interfaces.
Design Considerations
When implementing the PVT412LS:
- Ensure proper heat dissipation at maximum current
- Include transient voltage suppression for inductive loads
- Follow IPC-7351 land pattern guidelines
- Consider using conformal coating in humid environments
Obsolete Component Strategy
While marked obsolete, the PVT412LS remains available through:
- Authorized distributors' remaining stock
- Specialized obsolete component suppliers
- Alternative part suggestions (e.g., CPC1978Y)
Conclusion
The Infineon PVT412LS continues to serve engineers needing a compact, reliable solid-state relay solution. Its combination of 400V switching capability, SMD packaging, and proven reliability makes it particularly valuable for maintaining legacy equipment or cost-driven new designs.
For technical datasheets, application notes, or purchasing information, contact our component specialists today. We maintain access to PVT412LS inventory and can recommend modern equivalents when appropriate.