PVDZ172NSPBF - 60V 1.5A Photovoltaic Solid-State Relay | Infineon
MPN: PVDZ172NSPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.55 | $2,550.00 |
PVDZ172NSPBF Overview
A photovoltaic solid-state relay is a semiconductor switch whose input (an infrared LED) generates a photovoltaic voltage via an optically-coupled stack of photodiodes, which in turn drives the gates of one or more power MOSFETs on the output side. This topology provides galvanic isolation (typically several kV), infinite mechanical life, no contact bounce, insensitivity to shock, vibration and external magnetic fields, and silent operation. Compared with electromechanical relays, photovoltaic MOSFET SSRs switch much faster (microseconds vs. milliseconds), draw zero holding current in the output stage, and generate no EMI from contact arcing.
Key features of the PVDZ172NSPBF include a 60 V maximum load voltage, 1.5 A continuous load current (DC), low on-resistance (RDS(on)) HEXFET output MOSFETs in a back-to-back or single-MOSFET configuration, optical isolation between input and output, and solid-state reliability (no moving parts, no contact wear). The modified 8-pin SMT package provides a standard 0.300-inch row spacing for drop-in PCB compatibility with traditional PCB-mount relay footprints, and the gull-wing leads simplify surface-mount assembly and inspection.
The part is intended for general-purpose DC switching, including replacing electromechanical relays in industrial control, instrumentation, security, automotive and battery-powered systems. Designers choose photovoltaic SSRs when they need silent, bounce-free operation, long operational life (>10^9 cycles), resistance to shock/vibration/magnetic fields, or when they need to switch low-level signals without contaminating them with mechanical contact noise.
Typical applications include: industrial control PLCs and I/O modules, battery management systems (BMS), test and measurement equipment, security and alarm systems, automotive ECU signal switching, medical instrument switching, audio equipment muting circuits, and any general-purpose DC load switching where a traditional reed or electromechanical relay would previously have been specified. The PVDZ172NSPBF is one of the lower-voltage members of Infineon's photovoltaic relay family; for higher load voltages (e.g. 100 V, 200 V, 400 V, 600 V) other members of the PVDZ family should be selected.
Design consideration: ensure that the input LED is driven within its specified forward current range (typically 5-25 mA through an external current-limiting resistor); under-driving the LED will not generate sufficient photovoltaic voltage to fully enhance the output MOSFETs, leading to high RDS(on) and self-heating. Likewise, add a snubber or TVS across the output if the load is inductive (solenoid, relay coil, motor) to protect against inductive kickback that can exceed the 60 V rating.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PVDZ172NSPBF 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 PVDZ172NSPBF (same form factor and footprint) β differing in Mounting Type, Operating Temperature, Package, Relay Type, RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PVDZ172NS
β Drop-Inπ Reference alternative (not in catalog)
PVDZ172NSPBF
β Drop-Inβ In Stock
$2.55 / Unit
View Datasheet βPVDZ172N
β Drop-Inπ Reference alternative (not in catalog)
PVDZ172NSPBF-IF
β Drop-Inπ Reference alternative (not in catalog)
PVG612ASPBF
β Drop-Inβ In Stock
$2.65 / Unit
View Datasheet βPVG612AS-TPBF
β Drop-Inβ In Stock
$2.35 / Unit
View Datasheet βPVDZ172NSPBF Maximum Ratings & Electrical Characteristics
| Relay Type | Photovoltaic Solid-State Relay (SSR) |
| Output Configuration | SPST-NO (1 Form A) |
| Maximum Load Voltage | 60 V DC |
| Maximum Continuous Load Current | 1.5 A DC |
| Package | 8-SMD (0.300 inch / 7.62 mm pitch), 4 leads, gull-wing |
| Mounting Type | Surface Mount (SMT) |
| Input Type | DC (Infrared LED, optically coupled) |
| Output Type | HEXFET Power MOSFET, DC |
| Operating Mode | Normally Open |
| Lead-Free (Pb-Free) | Yes (PBF suffix) |
| RoHS Status | Compliant |
| Contact Form | 1 Form A (SPST-NO) |
| Typical Application | General-purpose DC load switching, replacement for electromechanical relays |
| Technology | Photovoltaic gate-driver + HEXFET output MOSFETs |
| Operating Temperature | -40 C to +85 C (industrial) |
PVDZ172NSPBF Pin Configuration
| Pin 1 | LED Anode (+) β Input LED anode (drive with IF = 5-25 mA through current-limiting resistor) |
| Pin 2 | LED Cathode (-) β Input LED cathode (return to input ground) |
| Pin 3 | NC β Not connected (per datasheet) |
| Pin 4 | NC β Not connected (per datasheet) |
| Pin 5 | Output Drain / Load + β Output MOSFET drain (or load terminal A) of the photovoltaic HEXFET switch |
| Pin 6 | Output Source / Load - β Output MOSFET source (or load terminal B) of the photovoltaic HEXFET switch |
| Pin 7 | NC β Not connected (per datasheet) |
| Pin 8 | NC β Not connected (per datasheet) |
Typical Applications
PVDZ172NSPBF is suitable for 6 applications: Industrial Control PLC I/O Modules, Battery Management System (BMS) Signal Switching, Test and Measurement Equipment Signal Routing, Security and Alarm System Output Switching, Audio Equipment Muting and Signal Switching, Medical Instrument Signal Routing.
Industrial Control PLC I/O Modules
The PVDZ172NSPBF's 60V/1.5A DC rating and bounce-free solid-state switching make it ideal for industrial PLC discrete-output modules that drive solenoid valves, indicator lamps, and small DC actuators. The optically-coupled photovoltaic gate-driver provides several kV of input-to-output isolation, satisfying IEC 61131-2 industrial I/O isolation requirements without the wear and EMI of electromechanical relays. Its 1.5A continuous current comfortably handles 24V DC pilot loads, and the absence of mechanical contacts means no contact bounce that could cause PLC input chatter or solenoid coil re-triggering. Designed-in PCB footprint matches the standard 0.300-inch 8-SMD relay land pattern shared with Infineon's wider PVDZ family, simplifying BOM standardization across a PLC product line.
Recommended
Battery Management System (BMS) Signal Switching
In 12V/24V/48V battery management systems, the PVDZ172NSPBF replaces electromechanical relays for low-current signal routing between battery cells, monitoring ICs, and the master controller. Its HEXFET output stage has very low on-resistance at full enhancement, minimizing voltage drop across the switch when routing millivolt-level cell-sense signals. The photovoltaic gate drive draws zero continuous current from the output rail, preserving battery standby life. Because the input LED is the only energized element during steady on-state, the part consumes only milliwatts from the control domain while passing up to 1.5A on the load side, ideal for always-on battery-powered BMS designs where quiescent draw matters.
Recommended
Test and Measurement Equipment Signal Routing
Bench-top and ATE signal-routing matrices benefit from the PVDZ172NSPBF's bounce-free switching when multiplexing low-level analog signals between DUTs and instrumentation. Compared with reed relays, the photovoltaic SSR has no mechanical contacts to bounce, stick, or introduce thermal EMF, and it is immune to external magnetic fields from nearby transformers or motors. The 60V/1.5A envelope covers most digital and analog test rails (5V, 12V, 24V, Β±15V, Β±24V) commonly used in mixed-signal board-test fixtures. The 8-SMD modified gull-wing package is hand-solderable and rework-friendly, simplifying prototype bring-up in custom test fixtures.
Recommended
Security and Alarm System Output Switching
Security panels, access-control systems, and alarm annunciators use the PVDZ172NSPBF to switch sirens, strobes, door strikes, and auxiliary indicators. Silent operation is essential in residential and office environments where loud mechanical-relay clicks are unacceptable, and the solid-state nature of the PVDZ172NSPBF eliminates that acoustic signature. Long operational life (>10^9 cycles versus ~10^5 for mechanical relays) is critical for alarm systems that may switch thousands of times per year. The 1.5A continuous current handles most 12V DC sirens and strobes directly, and the 60V rating provides margin for inductive-load transients on door-strike coils.
Recommended
Audio Equipment Muting and Signal Switching
High-end audio amplifiers, mixers, and effects processors use the PVDZ172NSPBF to implement click-free muting and signal-path switching. The relay's bounce-free turn-on/turn-off eliminates the thumps and pops that plague electromechanical-muted audio circuits, while its HEXFET output has very low on-resistance and no thermal EMF, preserving signal fidelity. The 60V/1.5A envelope easily passes line-level (Β±10V to Β±30V) and speaker-level audio signals up to several hundred watts when properly heatsunk. Optical isolation between the digital control domain and the analog audio path also breaks ground loops that would otherwise inject hum into the audio chain.
Recommended
Medical Instrument Signal Routing
Patient monitors, infusion pumps, and diagnostic instruments use the PVDZ172NSPBF for low-current signal-path switching where patient-isolation requirements and long service life are critical. Optical isolation between input and output provides the patient-side isolation barrier, and the absence of mechanical contacts eliminates a wear-out mechanism that would otherwise force periodic relay replacement in calibrated medical equipment. Silent switching is also valued in bedside and clinical environments. The 60V/1.5A envelope handles most internal 5V/12V/24V DC rails and low-power DC actuators such as indicator lamps and small solenoid valves within the instrument chassis.
Recommended
Recommended Products Summary
Engineering reference data for PVDZ172NSPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PVDZ172NS | PVDZ172N | PVG612ASPBF |
|---|---|---|---|---|
| Package | 8-SMD modified (0.300 inch, 7.62 mm, 4 leads) | 8-SMD modified (0.300 inch, 7.62 mm, 4 leads) - same | 8-SMD modified (0.300 inch, 7.62 mm, 4 leads) - same | 8-SMD modified (0.300 inch, 7.62 mm, 4 leads) - same |
| Brand | Infineon | Infineon | Infineon | Infineon |
| Lead Finish | Pb-free (PBF suffix, RoHS) | SnPb (non-Pb-free) | Pb-free | Pb-free |
| Technology | Photovoltaic HEXFET MOSFET SSR | Photovoltaic HEXFET MOSFET SSR | Photovoltaic HEXFET MOSFET SSR | Photovoltaic MOSFET SSR |
| Output Switching Type | DC only | DC only | DC only | DC only |
Key Differentiators
- 60 V / 1.5 A DC rating in the canonical 8-SMD modified gull-wing footprint (vs PVDZ172NS)
- Photovoltaic gate-driver HEXFET topology (vs Conventional reed relay)
- Zero-output-stage holding current for battery-friendly standby (vs Electromechanical relay with coil-holding current)
Design Notes
Estimated: with VIN = 24V and Iload = 1.5A through the output HEXFET, the conduction loss is P = I^2 * R_DS(on). Using a typical R_DS(on) of 0.1 ohm, dissipation is roughly 0.225W. At maximum 60V/1.5A into a low-resistance load, dissipation may reach several watts; verify with the Infineon datasheet on-resistance curves and apply a heatsink or copper pour if dissipation exceeds the package's free-air rating.
Do not drive the input LED with a fixed voltage source; always use a current-limiting resistor sized for the supply voltage and the desired forward current (typically 5-25 mA). Under-driving the LED yields insufficient photovoltaic gate voltage, which leaves the output MOSFETs in their linear region with high on-resistance and severe self-heating. Over-driving the LED (>25 mA continuous) may damage the input LED and shorten MTBF.
Provide adequate creepage and clearance between the input-LED side (pins 1-4) and the output-HEXFET side (pins 5-8) on the PCB to preserve the datasheet's optical isolation rating. Avoid running input and output traces in parallel; route them on opposite sides of the package or maintain the datasheet-specified clearance distance. For surface-mount assembly, follow the Infineon package outline drawing's recommended land pattern exactly to avoid solder bridging on the gull-wing leads.
Compliance Information
PBF suffix indicates Pb-free RoHS-compliant lead finish per Infineon product page. AEC-Q100 qualification status not stated in the verified web data; consult Infineon automotive-grade portfolio for AEC-Q100-qualified photovoltaic relays if required.
