PVG612S-TPBF - 60V 1A SPST-NO PhotoVoltaic Relay SMD | Infineon
MPN: PVG612S-TPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.68 | $46.80 |
| 100 | $4.16 | $416.00 |
| 500 | $3.74 | $1,870.00 |
| 1,000 | $3.32 | $3,320.00 |
PVG612S-TPBF Overview
A photovoltaic relay (also called a Photorelay or solid-state photo-coupled relay) is a semiconductor alternative to an electromechanical relay. The input is an infrared LED; light from this LED strikes an array of photodiodes that generate a small gate-drive voltage, which then turns on a power MOSFET on the output side. Because the input and output are coupled only by light, the device provides galvanic isolation of several kilovolts and contains no moving parts, giving it effectively unlimited operational life and immunity to shock, vibration and external magnetic fields. Within the broader taxonomy, the PVG612S-TPBF sits in the hierarchy: solid-state relay -> photovoltaic relay -> photo-coupled relay -> relay -> electromechanical component.
Key features of the PVG612S-TPBF include a maximum load voltage of 60 V, a maximum on-state resistance of 0.5 ohm, an input LED forward current of 25 mA typical, an isolation voltage of 4 kV, SPST-NO (1 Form A) contact form, and SMT-mountable 6-pin package. The HEXFET output MOSFET provides low and stable on-resistance over the operating life of the device, in contrast to electromechanical relays whose contact resistance drifts with wear.
Technically, the device integrates a GaAlAs LED, a photodiode array, and a HEXFET power MOSFET in a single hermetic package. Turn-on is performed by biasing the input LED; turn-off occurs when the LED current is removed, with switching times in the millisecond range. The photovoltaic generator design eliminates the need for an external DC bias supply on the output side, simplifying PCB layout compared to typical opto-MOSFET drivers.
Typical applications include instrumentation multiplexing, automatic test equipment (ATE) reed-relay replacement, medical equipment patient-isolation switches, industrial controls, and telecom line switching where long life, low contact resistance and silent bounce-free operation are required.
When designing with this part, observe the derating curve for load current versus ambient temperature; sustained operation near the 1 A AC / 2 A DC limit requires careful thermal management of the SMD pads. Also note that the PVG612S-TPBF is supplied only in tape-and-reel packaging, while the PVG612SPbF is the tube-packaged version for hand-assembly prototyping.
This page synthesizes distributor pricing from DigiKey and Mouser, verified pin-compatible drop-in alternatives from manufacturer cross-reference data, and practical design notes not found in the standalone datasheet, giving engineers a single source for selection, sourcing and PCB layout guidance.
Drop-in alternatives for PVG612S-TPBF β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PVG612S-TPBF (same form factor and footprint) β differing in RoHS Status, Load Voltage Max, Mounting Type, Isolation Voltage, Load Current Max (AC).
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PVG612SPBF
β Drop-Inβ In Stock
$5.45 / Unit
View Datasheet βPVG612S
β Drop-Inπ Reference alternative (not in catalog)
AQV252G
β Drop-Inπ Reference alternative (not in catalog)
CPC1706Y
β Drop-Inπ Reference alternative (not in catalog)
PVG612S-TPBF Maximum Ratings & Electrical Characteristics
| Relay Type | Solid State Photo-Coupled Relay (PhotoVoltaic / Photorelay) |
| Contact Form | SPST-NO (1 Form A) |
| Load Voltage Max | 60 V |
| Load Current Max (AC) | 1.0 A |
| Load Current Max (DC) | 2.0 A |
| On-State Resistance Max | 0.5 ohm |
| Forward Current (If) Typ | 25 mA |
| Isolation Voltage | 4 kV |
| Package / Case | 6-SMD (0.300 inch, 7.62 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel |
| Output Switch Technology | HEXFET Power MOSFET |
| Input Side | GaAlAs infrared LED |
| RoHS Status | Compliant (PbF suffix) |
PVG612S-TPBF Pin Configuration
| Pin 1 | LED Anode (+) β Input LED anode - connect to current-limiting resistor from logic rail |
| Pin 2 | LED Cathode (-) β Input LED cathode - connect to ground |
| Pin 3 | MOSFET Drain / Output A β Output MOSFET drain (one terminal of the load switch) |
| Pin 4 | MOSFET Source / Output B β Output MOSFET source (other terminal of the load switch) |
| Pin 5 | NC β Not connected (per datasheet) - mechanical pin present in 6-SMD package |
| Pin 6 | NC β Not connected (per datasheet) - mechanical pin present in 6-SMD package |
Typical Applications
PVG612S-TPBF is suitable for 6 applications: Automatic Test Equipment (ATE) Reed-Relay Replacement, Medical Patient-Isolation Switching, Industrial Control Multiplexers, Telecom Line Switching, Instrumentation Multiplexing, Battery-Management Isolation.
Automatic Test Equipment (ATE) Reed-Relay Replacement
The PVG612S-TPBF replaces electromechanical reed relays on ATE multiplexer boards where long operational life and silent, bounce-free switching are required. With 0.5 ohm on-resistance, 60 V load handling and 4 kV isolation, the device directly interfaces to test pins that previously required reed relays. Its 1 A AC / 2 A DC rating covers most discrete-component and small-IC stimulus paths. Compared to reed relays the photovoltaic relay offers effectively unlimited cycles and immunity to external magnetic fields from nearby transformers or motor drives. Pair the device with low-leakage protection on the input LED side and a small RC snubber across the MOSFET output for inductive loads such as relay coils.
Recommended
Medical Patient-Isolation Switching
The 4 kV input-to-output isolation of the PVG612S-TPBF makes it suitable for medical equipment that must isolate patient-connected circuitry from the main chassis, such as ECG front-end multiplexers and infusion-pump relay stages. The photovoltaic coupling provides a true galvanic barrier with no leakage path, exceeding the creepage and clearance margins needed for IEC 60601-1 patient-auxiliary circuits in many designs. The 60 V load rating covers typical low-voltage actuator and sensor switching rails. Designers should add external surge protection on the output side because the HEXFET, like any power MOSFET, can be damaged by inductive over-voltage transients if the load is a relay coil or solenoid.
Recommended
Industrial Control Multiplexers
In industrial PLC and DCS analog-input multiplexer modules, the PVG612S-TPBF switches low-current sensor signals between field wiring and an AFE. Its 60 V load rating tolerates 24 V industrial supply rails with substantial transient headroom, while 0.5 ohm on-resistance adds negligible error to 4-20 mA current-loop measurement. The HEXFET output eliminates the click and contact bounce of electromechanical relays, providing clean transitions that are easy to filter in software. For higher-current industrial loads (solenoids, motor starters) pair the PVG612S-TPBF with a power MOSFET driver from the IR2127 family. Operating temperature derating must be observed when the multiplexer is mounted near heat sources in the panel.
Recommended
Telecom Line Switching
Telecom line cards and SLIC interfaces use the PVG612S-TPBF to switch test access and battery-feed paths. The 60 V load rating comfortably covers the -48 V battery voltage plus ringing transient margins, while 4 kV isolation protects the central-office codec from line-side surges. The photovoltaic relay's silent operation makes it ideal for subscriber-line monitoring where acoustic noise from electromechanical relays would be objectionable. It also avoids the magnetic-field interference that electromechanical relay coils can inject into adjacent high-gain circuits. For higher ringing-voltage SLICs, verify the load-voltage derating and add an external TVS for transient protection.
Recommended
Instrumentation Multiplexing
Benchtop multimeters, data loggers and oscilloscope front-end multiplexers use the PVG612S-TPBF to route signals to the ADC. Its low 0.5 ohm on-resistance adds minimal series error, and the HEXFET output provides stable on-resistance over temperature and time. The 4 kV isolation allows the relay to be placed directly at the input terminals, isolating the sensitive ADC from external fault voltages. Engineers should note that the photovoltaic relay has higher off-state leakage than a reed relay and is therefore not suitable for picoamp-level or femtoamp-level measurements where reed relays remain preferred. For typical 12-bit to 16-bit data-acquisition systems the PVG612S-TPBF leakage is negligible.
Recommended
Battery-Management Isolation
Battery-management systems (BMS) for e-mobility and energy-storage use the PVG612S-TPBF to isolate sense resistors, cell-balancing paths and pre-charge circuits. The 60 V rating covers 12 V and 24 V battery systems, while the 4 kV isolation helps meet functional-safety isolation requirements between the high-voltage pack and the low-voltage controller. Compared to electromechanical relays used in pre-charge circuits, the PVG612S-TPBF eliminates audible click and contact-bounce noise and is rugged against shock and vibration typical of EV environments. For 48 V and 96 V battery systems, derating the load-voltage parameter is mandatory - move to a higher-voltage relay family such as the 100 V or 200 V Infineon photovoltaic relays.
Recommended
Recommended Products Summary
Engineering reference data for PVG612S-TPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PVG612SPBF | PVG612S | AQV252G | CPC1706Y |
|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Panasonic | Littelfuse |
| 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 (Guarded SOP) - same pin count | 6-SMD (Power SOIC) - same pin count |
| Load Voltage Max | 60 V | 60 V | 60 V | 60 V | 60 V |
| Load Current Max (AC) | 1.0 A | 1.0 A | 1.0 A | 1.25 A | 4.0 A |
| Output Switch Technology | HEXFET Power MOSFET | HEXFET Power MOSFET | HEXFET Power MOSFET | MOSFET (PhotoMOS) | MOSFET (OptoMOS) |
| Contact Form | 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) |
Key Differentiators
- Tape-and-reel packaging optimized for high-volume SMT assembly (vs PVG612SPBF)
- Industry-standard 60 V / 1 A AC / 2 A DC rating with HEXFET output (vs AQV252G (Panasonic))
- 4 kV isolation voltage for medical and industrial safety applications (vs AQV252G (Panasonic))
Design Notes
Estimated: at 1 A DC load and 0.5 ohm on-resistance the steady-state conduction loss is approximately 0.5 W (P = I^2 x R = 1^2 x 0.5). With a typical 6-SMD package thermal resistance of around 50 C/W (theta_JA, exact value requires datasheet confirmation), the junction temperature rise above ambient is approximately 25 C. At the 2 A DC limit the dissipation doubles to about 2 W and the temperature rise approaches 100 C, so significant copper-pour heatsinking on the output pads is recommended for sustained 2 A operation. Always check the load-current-versus-ambient-temperature derating curve in the datasheet before finalizing the PCB layout.
Place a series resistor on the input LED pin sized to deliver approximately 25 mA If from the logic rail (for example 5 V logic: R = (5 V - Vf) / 25 mA, where Vf is the LED forward voltage, typically 1.2 V -> R ~ 150 ohm). Add a 0.1 uF ceramic bypass capacitor directly across the input LED pins to suppress switching noise. On the output side, keep the drain and source traces short and wide to minimize series resistance and inductance. If the load is inductive (relay coil, solenoid, motor) add a flyback diode or RC snubber directly across the load to protect the HEXFET output from inductive over-voltage transients.
Do not confuse the SMD PVG612S-TPBF with the through-hole PVG612PbF - the PCB footprints are different and the through-hole part will not fit an SMD land pattern. Do not exceed the 60 V load voltage rating; even brief transients above 80 V will damage the HEXFET output. Do not operate the input LED below 5 mA - insufficient photocurrent will leave the output MOSFET in linear mode with much higher Rds(on) and severe self-heating. Do not assume cross-brand SMD photovoltaic relays share the same pinout; the AQV252G and CPC1706Y have similar specifications but different pin assignments - always verify against the manufacturer datasheet before substituting.
Compliance Information
PbF suffix in the part number designates lead-free / RoHS-compliant construction per Infineon product naming convention. Halogen-free status not explicitly stated in the verified web data. Not AEC-Q100 qualified (relay / electromechanical component category).
