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Explore our US-engineered PCB mount solid state relays, DC contactors, and high-voltage power isolation modules engineered for rigorous industrial environments.
In high-density industrial control electronics, medical diagnostic instruments, commercial HVAC systems, and clean energy battery management systems (BMS), classical electromechanical relays (EMRs) are increasingly failing to meet modern longevity and thermal performance metrics. Contact bounce, mechanical fatigue, electromagnetic interference (EMI) radiation, and acoustic noise severely limit the capabilities of traditional switching systems.
As a leading PCB mount solid state relays manufacturer in the United States, Altran Magnetics, LLC (headquartered at 1741 Industrial Drive, Sterling, Illinois) engineers advanced solid-state switching solutions tailored specifically to component-level OEM integration. By leveraging optical isolation, back-to-back SCR/Triac topologies, and ultra-low $R_{DS(on)}$ MOSFET output stages, our PCB mount SSRs deliver silent, sparkless, and practically infinite-cycle operation directly on printed circuit boards.
When selecting switching components for critical US defense, medical, or automotive applications, understanding the trade-offs between switching topographies is vital. The table below outlines how Altran Magnetics' PCB Mount Solid State Relays compare against traditional PCB electromechanical relays and heavy panel-mount SSR assemblies.
| Performance Parameter | Altran PCB Mount SSRs | PCB Electromechanical Relays | Industrial Panel Mount SSRs |
|---|---|---|---|
| Electrical Life Expectancy | > 100 Million Operations (No mechanical wear) | 100,000 to 500,000 Operations (Contact arcing) | > 100 Million Operations |
| Switching Speed / Delay | Ultra-fast (< 100 µs DC / Zero-Cross AC) | Slow (5 ms to 15 ms bounce) | Fast (1 ms to 10 ms) |
| Input Drive Power | Ultra-low (3–32 VDC, 5–15 mA) | High (Requires transistor coil drivers) | Low to Moderate (3–32 VDC, 10–30 mA) |
| Acoustic & EMI Noise | Zero acoustic noise; minimal EMI via zero-cross | High contact click; heavy inductive EMI arc | Zero acoustic noise; minimal EMI |
| Form Factor & Density | Compact SIP / DIP / SMT PCB footprint | Moderate PCB footprint; high vertical clearance | Bulky chassis mount; requires off-board wiring |
| Vibration & Shock Resistance | Immune (Solid epoxy encapsulation) | Vulnerable to contact chatter / false switching | High resistance |
| Dielectric Isolation ($V_{ISO}$) | 3,750 Vrms to 4,000 Vrms Optical Isolation | 1,500 Vrms to 2,500 Vrms typical | 4,000 Vrms standard |
Because PCB mount solid state relays dissipate power proportional to the load current passing through their internal semiconductor semiconductor switch (typically 1.0 to 1.2 Watts per Ampere for AC Triac/SCR outputs, and $I^2 \times R_{DS(on)}$ for DC MOSFET outputs), thermal management is the paramount factor governing board reliability.
To achieve maximum continuous load currents (up to 25A RMS) without external heatsinks, PCB designers should maximize the surface area of 2oz or 3oz copper planes directly beneath the SSR output pins. Thermal via arrays (0.3mm diameter on 1.0mm pitch) connected to internal ground/power planes dramatically reduce thermal resistance from junction-to-ambient ($R_{\theta j-a}$).
Specify Zero-Cross Turn-On SSRs for resistive loads (heaters, filament lamps) to switch AC power when the voltage wave passes zero, minimizing line surges and EMI. Conversely, select Random Turn-On SSRs for inductive loads (motors, transformers, phase-angle firing control) where precise phase alignment is necessary.
Inductive load switching produces severe voltage transients ($dv/dt$). Altran Magnetics PCB mount SSRs incorporate integrated RC snubber networks and transient voltage suppression (TVS) diodes. Additional external Metal Oxide Varistors (MOVs) placed across output lines safeguard against utility-grade lightning surges.
Engineered to meet stringent North American safety, environmental, and performance standards across domestic manufacturing sectors.
With the rapid expansion of the National Electric Vehicle Infrastructure (NEVI) formula program across US highways, level 3 DC fast chargers require robust PCB-mounted control relays for pre-charge circuits, high-voltage battery isolation monitoring, and safety interlocks. Altran Magnetics' high-voltage DC contactors and solid state relays ensure compliance with Buy America mandate requirements while delivering leak-free isolation up to 1,500 VDC.
In dialysis machines, MRI cooling systems, and automated blood analyzers, relay click noise and electromagnetic radiation can disrupt sensitive patient sensors and violate strict IEC 60601-1 medical isolation standards. Our PCB mount photo-MOSFET relays provide silent, zero-leakage switching with ultra-low capacitance, eliminating signal cross-talk in medical diagnostics facilities across North America.
US commercial real estate operators rely on precise PID temperature regulation for multi-zone variable air volume (VAV) controllers and heat pumps. Altran's PCB SSRs feature robust triac outputs capable of handling heavy resistive heating loads and inductive fan dampers millions of times without contact erosion or sticking.
Grid-scale battery energy storage facilities in Texas, California, and throughout the US demand component-level reliability under extreme thermal fluctuations. Embedded on battery management circuit boards, our compact power relays and SSRs manage cell balancing, contactor coil driving, and emergency fault disconnect loops efficiently.
Spurred by the US CHIPS and Science Act, domestic semiconductor fabrication plants (fabs) demand ultra-pure, zero-outgassing electronic components. Our PCB SSRs are housed in flame-retardant UL 94-V0 epoxy resin packages that operate flawlessly inside harsh cleanroom environment controllers and wafer processing bath heaters.
Modern Programmable Logic Controllers (PLCs) and industrial robotics require high-density I/O expansion boards. Altran's miniature SIP PCB SSRs permit tight multi-channel terminal block mounting, enabling automated assembly plants in the American Midwest to streamline control cabinet wiring.
The domestic market for PCB-mounted electrical components is undergoing a rapid evolution, driven by regulatory updates, supply chain nearshoring, and technological acceleration:
Technical and procurement answers provided directly by Altran Magnetics' Sterling, Illinois engineering team.
At Altran Magnetics, LLC, our corporate ethos is anchored in three core principles: We Design. We Build. We Deliver. Sourcing high-spec electrical power components demands absolute trust in manufacturing control and engineering support.
Our engineering team analyzes your complete schematic, load characteristics, ambient operating parameters, and enclosure envelope prior to issuing formal quotes.
Every PCB solid state relay undergo automated 100% functional testing, dielectric withstand testing, and visual inspection before leaving our facilities.
In addition to PCB SSRs, Altran Magnetics manufactures high-voltage DC contactors, single/three-phase EMI filters, blowers, and dusk-to-dawn photo controls.
Need a custom PCB layout recommendation, evaluation samples, or an immediate cross-reference for an obsolete power relay? Reach out to our technical sales team directly.
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