PVT312SPBF - 250V 190mA 1-Form-A PV Relay 6-SMD | Infineon
MPN: PVT312SPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.34 | $5.34 |
| 10 | $4.93 | $49.30 |
| 100 | $4.35 | $435.00 |
| 500 | $3.78 | $1,890.00 |
| 1,000 | $3.22 | $3,220.00 |
Drop-in alternatives for PVT312SPBF β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PVT312S-TPBF
β Drop-Inβ In Stock
$3.85 / Unit
View Datasheet βPVT312PBF
β Drop-Inπ Reference alternative (not in catalog)
PVT412SPBF
β Drop-Inπ Reference alternative (not in catalog)
PVT212SPBF
β Drop-Inπ Reference alternative (not in catalog)
PVT322SPBF
β Drop-Inπ Reference alternative (not in catalog)
PVT422SPBF
β Drop-Inπ Reference alternative (not in catalog)
PVT312SPBF Maximum Ratings & Electrical Characteristics
| Contact Configuration | SPST-NO (1 Form A) |
| Load Voltage Max | 250 V |
| Load Current (AC) | 190 mA |
| Load Current (DC) | 320 mA |
| On-State Resistance Max (Ron) | 10 ohm |
| Isolation Voltage | 4 kV |
| Forward Current If (typ.) | 25 mA |
| Relay Terminals | SMD / Surface Mount |
| Package | 6-SMD (0.300", 7.62 mm) |
| Mounting Type | Surface Mount |
| Output Type | Photovoltaic (MOSFET, AC/DC) |
| Operating Temperature | -40C to +85C |
| Lead-Free / Pb-Free | Yes (PbF suffix) |
| RoHS Status | Compliant |
PVT312SPBF Pin Configuration
| Pin 1 | LED Anode (+) β Input LED anode (drive with current-limited source) |
| Pin 2 | LED Cathode (-) β Input LED cathode (return path for If) |
| Pin 3 | NC β Not connected (per datasheet, support pin) |
| Pin 4 | MOSFET Drain/Source A β Output switch terminal A (bidirectional AC/DC) |
| Pin 5 | MOSFET Drain/Source B β Output switch terminal B (bidirectional AC/DC) |
| Pin 6 | NC β Not connected (per datasheet) |
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
PVT312SPBF is suitable for 6 applications: Telecom Line Switching, Automatic Test Equipment (ATE) Relay Matrix, Battery Management Isolation, Industrial PLC Discrete I/O, Medical Equipment Signal Routing, Audio Signal Path Muting.
Telecom Line Switching
The PVT312SPBF is well-suited for telecom line-card switching because its 250 V load rating covers standard ringing voltages and its 4 kV input-to-output isolation protects sensitive DSL/VoIP ASICs from line transients. The 190 mA AC rating handles off-hook current and test-load switching. Unlike electromechanical relays, the photovoltaic design has no contact bounce that would corrupt modem hand-shake sequences, and its silent operation suits customer-premise equipment (CPE) where audible clicks are objectionable.
Recommended
Automatic Test Equipment (ATE) Relay Matrix
In ATE systems, the PVT312SPBF serves as a 1-Form-A switch in multiplexers and scanner cards where signal integrity and long life are paramount. Its 10 ohm on-state resistance is acceptable for medium-impedance measurement paths, and the bounce-free switching eliminates false trigger events in high-speed sequencing. Designers benefit from the >10 billion operation lifetime compared to ~100k operations of electromechanical alternatives, dramatically reducing field-service costs in 24/7 production test environments.
Recommended
Battery Management Isolation
Battery management systems (BMS) use the PVT312SPBF to isolate the pack from the load during deep-discharge protection events. The 320 mA DC rating supports continuous discharge currents for small Li-ion packs, and the 250 V rating covers 48 V telecom battery strings with comfortable margin. The zero-leakage characteristic of the photovoltaic output (no gate-charge retention) ensures the pack is fully disconnected when the LED is off, eliminating parasitic drain critical for long-shelf-life emergency equipment.
Recommended
Industrial PLC Discrete I/O
Programmable Logic Controllers (PLCs) deploy the PVT312SPBF as the output switch for 24 V DC discrete outputs driving solenoids, relays, and indicator lamps. The 320 mA DC rating covers typical industrial loads, and the 4 kV isolation protects the PLC backplane from field-side transients induced by motor switching. The solid-state design withstands the harsh vibration and temperature swings (-40C to +85C) common in factory automation, outperforming mechanical relays in machine-mount applications.
Recommended
Medical Equipment Signal Routing
Medical instrumentation such as patient monitors and infusion pumps use the PVT312SPBF to switch low-level analog signals between sensor channels. The silent operation is critical in bedside equipment where electromechanical relay clicks disturb patient rest. The 4 kV isolation provides patient-leakage protection to IEC 60601 requirements when properly designed, and the bounce-free switching prevents motion artifacts in ECG/EEG signal paths that would otherwise corrupt diagnostic readings.
Recommended
Audio Signal Path Muting
High-end audio equipment uses the PVT312SPBF as a clickless muting switch in preamplifier and DAC output stages. Unlike mechanical relays, the photovoltaic design produces no audible thump during mute/unmute transitions that would damage tweeters or disturb listeners. The 190 mA AC rating and 10 ohm on-state resistance are transparent in line-level audio (typically <2 V RMS), and the 4 kV isolation prevents ground loops between digital and analog domains in mixed-signal designs.
Recommended
Recommended Products Summary
Engineering reference data for PVT312SPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PVT312S-TPBF | PVT312PBF | PVT412SPBF | PVT212SPBF | PVT322SPBF | PVT422SPBF |
|---|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 6-SMD (0.300", 7.62 mm) | 6-SMD (0.300", 7.62 mm) - same | 6-DIP (0.300", 7.62 mm) - same outline, THT | 6-SMD (0.300", 7.62 mm) - same | 6-SMD (0.300", 7.62 mm) - same | 6-SMD (0.300", 7.62 mm) - same | 6-SMD (0.300", 7.62 mm) - same |
| Load Voltage Max | 250 V | 250 V | 250 V | 400 V | 200 V | 250 V | 400 V |
| Load Current (AC) | 190 mA | 190 mA | 190 mA | 140 mA | 550 mA | 170 mA | 120 mA |
| Load Current (DC) | 320 mA | 320 mA | 320 mA | 210 mA | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| On-State Resistance Max | 10 ohm | 10 ohm | 10 ohm | 27 ohm | 2.5 ohm | [DATA_NEEDED] | [DATA_NEEDED] |
| Isolation Voltage | 4 kV | 4 kV | 4 kV | 4 kV | 4 kV | 4 kV | 4 kV |
| Contact Configuration | SPST-NO (1 Form A) | SPST-NO (1 Form A) | SPST-NO (1 Form A) | SPST-NO (1 Form A) | SPST-NO (1 Form A) | SPST-NO (1 Form A) | SPST-NO (1 Form A) |
| Mounting Type | Surface Mount | Surface Mount | Through-Hole (DIP) | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
Key Differentiators
- Highest AC load current in the PVT312 6-SMD family (vs PVT412SPBF)
- Lower on-state resistance than higher-voltage PVT412 variant (vs PVT412SPBF)
- More compact than electromechanical relay alternatives (vs Standard telecom reed relay (e.g., DIP-sized EMR))
- Higher voltage capability than PVT212 low-voltage variant (vs PVT212SPBF)
Design Notes
The PVT312SPBF output uses two back-to-back MOSFETs with no internal current limiting. At 190 mA AC load and 10 ohm Ron, conduction loss reaches approximately 0.36 W. Provide at least 100 mm^2 of PCB copper tied to pins 4-6 to keep junction temperature rise below 30C. For continuous operation above 100 mA, derate to 70% of rated current and verify with thermal imaging during design validation. The LED input forward current of 25 mA should be sourced through a current-limiting resistor or active current driver; do not connect directly to a 5 V logic output without current limiting.
Maintain at least 4 mm clearance between the input LED side (pins 1-2) and the output MOSFET side (pins 4-6) on the PCB to preserve the rated 4 kV isolation. Use slot-in-board or cut-trace techniques if creepage distance is a concern. Place the input current-limiting resistor within 5 mm of the LED anode pin to minimize parasitic inductance that can cause voltage transients when the LED switches. The exposed pad on the package underside is not internally connected - leave it floating or connect to circuit common as appropriate.
Do not exceed 250 V load voltage even momentarily - the output MOSFET avalanche rating is absolute. When switching inductive loads (relays, solenoids, transformers), add a snubber or flyback diode across the load to clamp back-EMF below 250 V. The DC current rating (320 mA) is higher than AC (190 mA) due to RMS-versus-average heating - do not assume the DC rating applies to AC operation. The PVT312SPBF has zero turn-off current capability beyond the natural MOSFET off-state; for fail-safe designs use a parallel mechanical relay.
The 10 ohm on-state resistance introduces insertion loss in precision measurement paths. For low-level signals (<100 mV), the offset voltage generated by load current flowing through Ron can exceed 1.9 mV (190 mA * 10 ohm), which may exceed the LSB of 16-bit ADCs. Use a T-type switch configuration or auto-zeroing for high-precision applications. The output capacitance (typically 50-100 pF) limits high-frequency signal bandwidth to approximately 5-10 MHz; verify with network analyzer measurements for RF applications.
Compliance Information
RoHS compliant per Infineon product page. PbF suffix in MPN denotes lead-free construction. AEC-Q100 not applicable - photovoltaic relays are not automotive-qualified. Halogen-free status not explicitly stated in available data.
