PVT312LSPBF - 250V SPST-NO Photovoltaic SSR | Infineon
MPN: PVT312LSPBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.93 | $4.93 |
| 10 | $4.45 | $44.50 |
| 100 | $3.98 | $398.00 |
| 500 | $3.58 | $1,790.00 |
| 1,000 | $3.2 | $3,200.00 |
| 3,000 | $2.85 | $8,550.00 |
Drop-in alternatives for PVT312LSPBF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PVT312LS-TPBF
✅ Drop-In✓ In Stock
$2.75 / Unit
View Datasheet →PVT312S-TPBF
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PVT312SPBF
✅ Drop-In✓ In Stock
$3.22 / Unit
View Datasheet →HSR312LS
✅ Drop-In📋 Reference alternative (not in catalog)
PVG612PBF
✅ Drop-In✓ In Stock
$1.97 / Unit
View Datasheet →PVT312LSPBF Maximum Ratings & Electrical Characteristics
| Relay Type | Solid State Photo-Coupled Relay (Photorelay), SPST-NO (1 Form A) |
| Output Configuration | SPST-NO (1 Form A) |
| Load Voltage Rating (AC/DC) | 0 V to 250 V |
| Continuous Load Current (AC, 25 C) | 190 mA |
| Continuous Load Current (DC, 25 C) | 320 mA |
| On-Resistance (Max, 25 C) | 0.5 ohm |
| Input Control Current (Typ, turn-on) | 5 mA |
| Input Turn-Off Current (Max) | 0.25 mA |
| LED Forward Voltage (Typ, 5 mA) | 1.2 V |
| LED Reverse Voltage (Max) | 6 V |
| Turn-On Time (Max) | 2 ms |
| Turn-Off Time (Max) | 0.25 ms |
| Input-to-Output Isolation (Min) | 3750 Vrms |
| Capacitance Input-to-Output (Typ) | 1.0 pF |
| Operating Temperature Range | -40 C to +85 C |
| Package | 6-SMD (0.300 inch / 7.62 mm DIP pitch) |
| Mounting Type | Surface Mount (SMD) |
| RoHS Status | Compliant (Pb-free suffix 'PbF') |
PVT312LSPBF Pin Configuration
| Pin 1 | LED+ — LED anode (input control side) |
| Pin 2 | LED- — LED cathode (input control side) |
| Pin 3 | NC — Not connected (no internal bond) |
| Pin 4 | NC — Not connected (no internal bond) |
| Pin 5 | MOSFET A — MOSFET output terminal A (AC/DC load side) |
| Pin 6 | MOSFET B — MOSFET output terminal B (AC/DC load side) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
PVT312LSPBF is suitable for 6 applications: Telecom Line-Card Hookswitch, Test & Measurement Multiplexer, Medical Patient-Isolation Switching, Industrial Process Control Outputs, Battery Management & Load Disconnect, Security & Surveillance Signal Routing.
Telecom Line-Card Hookswitch
The PVT312LSPBF is specifically designed for telecom line-interface hookswitch service, where it replaces bulky electromechanical relays on a per-line basis. The 250 V continuous blocking voltage covers battery-feed (-48 V nominal with transients) and ringing injection (typically 90-150 Vrms superimposed on battery) with adequate design margin. The 3750 Vrms input-to-output isolation meets telecom safety standards for SELV-to-TNV separation. The photovoltaic gate drive means the load side operates with zero standby current draw, critical for thousands of lines per shelf. The 5 mA typical turn-on current allows direct drive from a line-card FPGA or line-interface IC. Compared to electromechanical alternatives, the PVT312LSPBF offers silent switching (no audible click on ring trip), no contact bounce, and unlimited mechanical life, dramatically reducing line-card warranty returns.
Recommended
Test & Measurement Multiplexer
In automatic test equipment (ATE) and instrumentation multiplexers, the PVT312LSPBF provides arc-free, low-leakage switching of analog signals up to 250 V. Its 0.5 ohm on-resistance minimizes series voltage drop in low-level measurements, and its low off-state leakage (sub-microamp typical) preserves measurement accuracy on high-impedance sources. The 0.25 ms turn-off time enables fast multiplexing scan rates in production test systems. The 3750 Vrms isolation allows direct switching of mains-connected test points without separate isolation barriers. The photovoltaic drive eliminates ground loops between the instrument's digital control and the floating DUT, since the LED input and MOSFET output share no galvanic path.
Recommended
Medical Patient-Isolation Switching
Medical equipment requires galvanic isolation between patient-connected circuits (per IEC 60601-1) and the operator-accessible chassis. The PVT312LSPBF's 3750 Vrms isolation rating provides a primary-means-of-protection isolation barrier in patient-isolation switching applications such as ECG lead multiplexers, defibrillator protection relays, and electrosurgical generator mode switching. The arc-free, bounce-free switching is critical for ECG signal integrity - mechanical relay bounce produces artifacts that mimic QRS complexes. The photovoltaic drive means the patient side draws no bias current, simplifying battery-powered portable medical device power budgets. Lifetime of the PVT312LSPBF exceeds mechanical relays by orders of magnitude, reducing field-service intervals on life-support equipment.
Recommended
Industrial Process Control Outputs
Industrial control systems use the PVT312LSPBF to switch analog and digital field signals to PLCs, valve actuators, and process instrumentation. The 250 V rating handles 120/230 V AC field wiring directly, while the 320 mA DC rating covers typical 24 V DC solenoid and relay coil loads. The PVT312LSPBF's solid-state construction provides immunity to vibration and dust that would corrode mechanical relay contacts in factory environments. The LED input can be driven directly from 24 V PLC logic with a single series resistor, simplifying wiring and reducing panel space. Its -40 C to +85 C operating range covers unconditioned industrial enclosures.
Recommended
Battery Management & Load Disconnect
In battery-powered systems and UPS designs, the PVT312LSPBF provides a low-loss load-disconnect switch between the battery stack and the load. The 0.5 ohm on-resistance dissipates less than 100 mW at 200 mA continuous current, preserving battery runtime compared to discrete MOSFET designs that require external gate-drive circuits. The photovoltaic drive eliminates the auxiliary supply that would otherwise drain the battery during shelf-storage. The 250 V blocking voltage supports multi-cell battery stacks up to ~48 V nominal. The arc-free switching extends battery pack service life by eliminating the inductive-kick stress that contact-arcing imposes on Li-ion cells.
Recommended
Security & Surveillance Signal Routing
In security-system alarm panels and surveillance switchers, the PVT312LSPBF routes low-voltage DC signals from sensors, sirens, and notification appliances with bounce-free, silent switching. Its 5 mA LED turn-on current allows direct drive from the panel's microcontroller or alarm-IC outputs, with a single resistor for current limiting. The 3750 Vrms isolation is valuable when the panel is co-located with mains-powered devices, preventing fault propagation. The PVT312LSPBF's solid-state construction eliminates the relay-click acoustic signature that intruders can use to identify alarm-system operation, enhancing the discretion of security installations.
Recommended
Recommended Products Summary
Engineering reference data for PVT312LSPBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PVT312LS-TPBF | PVT312S-TPBF | PVT312SPBF | HSR312LS | PVG612PBF |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 6-SMD (0.300 inch / 7.62 mm) | 6-SMD (0.300 inch / 7.62 mm) - same | 6-SMD (0.300 inch / 7.62 mm) - same | 6-SMD (0.300 inch / 7.62 mm) - same | 6-SMD (0.300 inch / 7.62 mm) - same | 6-SMD (0.300 inch / 7.62 mm) - same |
| Load Voltage Rating | 250 V | 250 V | 250 V | 250 V | 250 V | 60 V |
| Continuous Load Current (AC) | 190 mA | 190 mA | 190 mA | 190 mA | 190 mA | 1 A |
| Continuous Load Current (DC) | 320 mA | 320 mA | 320 mA | 320 mA | 320 mA | 1 A |
| On-Resistance (Max, 25 C) | 0.5 ohm | 0.5 ohm | 0.5 ohm | 0.5 ohm | 0.5 ohm | 0.1 ohm (higher current part) |
| Input-to-Output Isolation | 3750 Vrms | 3750 Vrms | 3750 Vrms | 3750 Vrms | 3750 Vrms | 3750 Vrms |
| Topology | Photovoltaic HEXFET | Photovoltaic HEXFET | Photovoltaic HEXFET | Photovoltaic HEXFET | Photovoltaic HEXFET | Photovoltaic HEXFET |
| Unit Price (qty 1, as of 2026-09-14) | $4.93 | ~$4.93 | ~$4.93 | ~$4.93 | ~$4.50 | ~$4.10 |
Key Differentiators
- Photovoltaic gate drive eliminates external load-side bias supply (vs PVG612PBF)
- Single 6-pin SMD footprint shared with entire PVT312 family (vs Panasonic PhotoMOS AQW210S)
- 190 mA AC / 320 mA DC load current at 250 V (vs PVT212SPBF)
Design Notes
The PVT312LSPBF requires no external bias supply on the load side because the integrated photovoltaic generator develops the gate voltage from the LED input. On the control side, drive the LED with 5-10 mA from 5 V logic through a 680-820 ohm series resistor. The LED reverse voltage rating is only 6 V, so add a reverse-biased diode across the LED if the input drive could go below 0 V. Do not exceed 25 mA LED forward current or the LED lifetime may be shortened.
Estimated: at 250 V / 190 mA AC load with 0.5 ohm on-resistance, the PVT312LSPBF dissipates approximately (190 mA)^2 x 0.5 ohm = 18 mW plus switching losses. At 320 mA DC continuous, DC dissipation is approximately (320 mA)^2 x 0.5 ohm = 51 mW. The device has no internal thermal shutdown - you MUST derate the load current at elevated ambient temperature per the datasheet's RthJA-derating curve, because the HEXFET on-resistance rises with junction temperature. Use generous PCB copper area on pins 5 and 6 to spread heat.
Maintain at least 4 mm creepage distance between the input-side LED pins (1-2) and the output-side MOSFET pins (5-6) on the PCB top layer to preserve the 3750 Vrms isolation rating in the presence of humidity and pollution. The manufacturer recommended SMD land pattern is in the datasheet's mechanical section - do not deviate from it. Keep high-voltage traces away from the LED input traces to minimize capacitive coupling of switching transients into the control side.
Do not connect the PVT312LSPBF output to a voltage above 250 V blocking - it has no avalanche rating and will latch up or fail short. For inductive loads (solenoids, transformers), add a snubber or MOV across the load to clamp the inductive kick, otherwise the peak transient can exceed 250 V and damage the HEXFET output. The MOSFET output is bidirectional - either pin 5 or 6 can be the high side - but always connect the load between pins 5-6, never to chassis ground or another output channel.
Compliance Information
RoHS compliant per the 'PbF' suffix indicating lead-free terminal finish. Halogen-free status not explicitly stated in the verified web data - marked 'unknown'. AEC-Q100 not applicable - this is an electromechanical-style SSR for telecom/industrial, not an automotive-qualified IC. For automotive-grade SSR functionality consult Infineon product tree separately.
