Vishay Semiconductor Opto Division VOR2142B8

Overview

VOR2142B8 from Vishay Semiconductors is a dual-channel, normally open, optically isolated solid-state relay (SPST, 1 Form A) with 400 V load voltage rating, 140 mA per-channel DC load current capability at 25 °C, and 22 Ω typical on-resistance. It uses a GaAlAs IRED input and high-performance MOSFET output switches to enable clean, bounce-free switching of both AC and DC signals in industrial control and metering systems.

For engineers reviewing the VOR2142B8 datasheet, VOR2142B8 pinout, VOR2142B8 application, or VOR2142B8 equivalent, this device supports design verification for safety-isolated load switching where low drive current (<0.25 mA turn-on), fast switching (0.13 ms turn-on), and 5300 VRMS isolation are required.

Technical Context

The VOR2142B8 implements hybrid optocoupler architecture: an input GaAlAs infrared LED drives two independent photodetector-MOSFET output stages, each with integrated gate drive circuitry. This enables true dual-channel independence - no shared output path or cross-talk.

Each channel operates with galvanic isolation up to 5300 VRMS and supports bidirectional AC/DC load switching up to ±400 V. The device meets UL 1577 and DIN EN 60747-5-5 (VDE 0884-5) safety standards, with creepage and clearance ≥8 mm for SMD-8 packaging.

Key Specifications

Pinout & Package

SMD-8 surface-mount package with gull-wing leads, 9.80 mm × 6.65 mm footprint, 1.00 mm lead pitch, and 0.79 mm nominal lead thickness. Meets JEDEC MS-012AC and RoHS-compliant reflow profiles (J-STD-020, MSL 1).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar solid-state relay applications.

Compared with TLP3547(TP,E and PVG612TP, the VOR2142B8 uniquely delivers dual 400 V/140 mA channels in SMD-8 with 22 Ω RON and 0.13 ms turn-on - making it the only option among the three qualified for high-reliability, high-voltage, dual-output industrial switching.

Availability

VOR2142B8 is available at Aetrix Electronics and suitable for metering systems, industrial PLC output modules, battery management systems, security alarm panels, and automatic test equipment requiring stable component supply and long-term lifecycle support.

Supply support for VOR2142B8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and optoelectronics with over 50 years of reliability engineering heritage.

The VOR2142 series belongs to Vishay's high-isolation solid-state relay product line, designed specifically for replacing electromechanical relays in safety-critical industrial, energy, and security applications where long life, zero bounce, and regulatory compliance are mandatory.

FAQ

What is the maximum continuous load current per channel for VOR2142B8 at 100 °C ambient?

The VOR2142B8 supports 100 mA continuous DC load current per channel at 100 °C ambient temperature, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limitations of the SMD-8 package and internal MOSFET junction temperature constraints. At 25 °C, the rating increases to 140 mA per channel. Engineers must verify PCB copper area and airflow to maintain safe operation within these limits.

Does VOR2142B8 support AC load switching, and what is its peak AC voltage rating?

Yes, VOR2142B8 supports both AC and DC load switching. Its peak AC voltage rating is ±400 V, matching its DC load voltage specification. This allows direct connection to 230 VAC mains (325 V peak) with margin. The device uses back-to-back MOSFETs per channel to ensure symmetrical conduction in either polarity, eliminating need for external bridge rectification in AC applications.

What is the minimum input forward current required to reliably turn on VOR2142B8 at −40 °C?

At −40 °C, the VOR2142B8 requires a minimum input forward current of 0.35 mA to guarantee turn-on, based on Figure 7 (Normalized Forward Current for Switch Turn-On vs. Ambient Temperature). This is higher than the 0.25 mA typical value at 25 °C due to reduced IRED efficiency at low temperature. Designers should size the series resistor accordingly to ensure sufficient IF across the full operating range.

Can VOR2142B8 be used in safety-certified designs, and which certifications does it hold?

Yes, VOR2142B8 is certified for safety-critical use with UL 1577 (5300 VRMS isolation), cUL recognition, and DIN EN 60747-5-5 (VDE 0884-5) compliance. It achieves VIORM = 890 Vpeak and creepage/clearance ≥8 mm in SMD-8 package, qualifying it for reinforced insulation per IEC 61800-5-1 and IEC 62368-1. Full certification documentation is available in Vishay Document #84303.

How does the off-state leakage current of VOR2142B8 vary with load voltage and temperature?

VOR2142B8 exhibits off-state leakage current of <1 nA at ±100 V and 25 °C, rising to 6–500 nA at ±400 V depending on temperature (Figure 10). At 100 °C, leakage reaches ~100 nA at ±400 V. This behavior is inherent to MOSFET output structure and remains well below levels that would cause false triggering in typical industrial control interfaces with ≥10 kΩ input impedance.