VOR1142M4 - 400V SPST-NO Solid-State Relay | Vishay
料号： VOR1142M4 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.65 | $26.50 |
| 100 | $2.35 | $235.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
| 2,500 | $1.65 | $4,125.00 |
VOR1142M4 概述
What is a solid-state relay (SSR)? A solid-state relay is an electronic switching device that performs the same function as an electromechanical relay but contains no moving parts. SSR technology replaces mechanical contacts and armatures with semiconductor switches (typically MOSFETs, IGBTs, or thyristors) and provides galvanic isolation between input and output through an optocoupler (LED + photodetector), transformer, or RF coupler. Compared with electromechanical relays, SSRs offer silent operation, unlimited mechanical endurance, faster switching speeds, bounce-free outputs, and high resistance to shock and vibration. The VOR1142M4 belongs to the photorelay sub-family, in which an IRED drives MOSFET output switches directly through optical coupling.
Key specifications include a maximum load voltage of 400 V, a typical on-state resistance of 19 ohm, a continuous load current rating of 140 mA, current-limit protection, an isolation test voltage of 3750 Vrms, and a high-reliability construction. The 4-SOP package footprint is industry-standard for miniature photorelays, enabling direct substitution on existing PCB layouts. Typical on-resistance variation with temperature is also low, allowing stable operation across the -40 C to +85 C industrial temperature range.
In the output stage, the dual-MOSFET architecture provides bidirectional AC/DC switching capability through two MOSFETs connected back-to-back, supporting both polar and AC-load applications. The GaAlAs IRED provides high radiant intensity at low forward current (typically 5 mA), enabling low-power microcontroller-driven control with a guaranteed CTR/IFT specification across temperature.
Typical applications include general telecom switching, security equipment, metering systems, automatic test equipment, battery monitoring, and industrial control isolation. Designers select photorelays in place of mechanical relays when silent switching, long-term reliability, low power consumption, and immunity to shock/vibration are required.
When designing with this device, ensure that the load current does not exceed the 140 mA continuous rating and that the peak load voltage remains below 400 V. Always include a snubber or flyback protection when switching inductive loads, and add an input-side resistor to limit the IRED forward current to the recommended maximum (10 mA) for long-term reliability.
This page synthesizes distributor pricing, cross-reference alternatives, and practical design considerations not found in the manufacturer datasheet alone, giving engineers a single reference for sourcing and second-sourcing the VOR1142M4.
直接替换替代料： VOR1142M4 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
VOR1142M4T
✅ 直接替换📋 参考替代料（不在目录中）
VOR1142B4
✅ 直接替换📋 参考替代料（不在目录中）
VOR1142B4T
✅ 直接替换📋 参考替代料（不在目录中）
VOR1142B6
✅ 直接替换📋 参考替代料（不在目录中）
AQZ202
✅ 直接替换📋 参考替代料（不在目录中）
TLP176G
✅ 直接替换📋 参考替代料（不在目录中）
LH1546AEF
✅ 直接替换📋 参考替代料（不在目录中）
VOR1142M4 最大额定值与电气特性
| Manufacturer | Vishay Intertechnology |
| Series | VOR1142 |
| Relay Type | Solid State Photo-Coupled Relay (Photorelay) |
| Circuit | SPST-NO (1 Form A) |
| 输出类型 | AC, DC |
| On-State Resistance (Typical) | 19 ohm |
| Load Voltage Rating | 400 V (maximum) |
| Load Current Rating | 140 mA (continuous) |
| Isolation Test Voltage | 3750 Vrms |
| Input Control Type | DC (GaAlAs IRED) |
| On-State Resistance (Maximum) | 27 ohm |
| 工作温度 | -40 C to +85 C |
| 安装类型 | Surface Mount |
| 封装 / 外壳 | 4-SOP (0.180 inch, 4.57 mm) |
| Termination Style | Solder |
| Current Limit Protection | Yes |
| RoHS 状态 | Compliant |
| MSL 等级 | 1 |
| Qualification | High-Reliability SSR |
VOR1142M4 引脚配置
| 引脚 1 | LED Anode (+) — IRED anode; connect through current-limiting resistor to VCC |
| 引脚 2 | LED Cathode (-) — IRED cathode; connect to GND |
| 引脚 3 | MOSFET Drain/Source A — Output switch terminal A (AC/DC load) |
| 引脚 4 | MOSFET Drain/Source B — Output switch terminal B (AC/DC load) |
典型应用
VOR1142M4 适用于 7 应用s: Telecom Line Switching, Security and Alarm Equipment, Electronic Metering, Industrial Control Isolation, Automatic Test Equipment (ATE), Battery Monitoring and Management, Medical Equipment Isolation.
Telecom Line Switching
The VOR1142M4 is ideally suited for telecom line switching where 3750 Vrms isolation is required to separate low-voltage control logic from -48 V battery-backed line circuits. With a 400 V maximum load voltage rating and 140 mA continuous load current, it can switch ringing signals, line test relays, and subscriber line interface cards (SLICs). Its GaAlAs IRED input draws only a few milliamps from the microcontroller, and the 19 ohm typical on-resistance introduces minimal series loss in the line path. Compared with a traditional electromechanical relay, the VOR1142M4 provides silent operation - essential for on-premise PBX and VoIP gateway equipment - and unlimited mechanical endurance for high-cycle subscriber-line testing.
推荐
Security and Alarm Equipment
In security alarm panels, the VOR1142M4 provides silent, bounce-free switching of sirens, strobes, and auxiliary sensors. Its 400 V load voltage rating easily accommodates 120/240 VAC siren circuits, while the 140 mA continuous current is sufficient to drive piezo sirens, LED indicators, and small relay coils. The optocoupler-style isolation (3750 Vrms) protects the low-voltage alarm logic from transients on the switched line. Because photorelays have no mechanical contacts, they cannot be defeated by contact welding and provide long-term reliability in always-on security installations where conventional reed relays would eventually wear out.
推荐
Electronic Metering
The VOR1142M4 fits electronic electricity, gas, and water metering applications where a solid-state switch is needed to route signal lines or to provide a low-resistance path for current-sensing shunts. Its 19 ohm typical on-resistance and 140 mA load rating allow direct switching of low-current metrology signals without introducing significant measurement error. The 3750 Vrms isolation protects sensitive ADC front-ends from the high common-mode voltages present in 480 V class metering installations. Because the device is solid-state, it draws no holding power and avoids the reliability concerns of mechanical relays in hermetically sealed metering enclosures.
推荐
Industrial Control Isolation
In industrial PLCs and motor drives, the VOR1142M4 provides reinforced isolation between 24 V control logic and 230/400 V field-side circuits for digital inputs, push-button monitoring, and end-of-travel sensor routing. The 3750 Vrms isolation test voltage meets the IEC 61131-2 reinforced isolation requirements for industrial control equipment, while the GaAlAs IRED input allows direct drive from 5 V or 3.3 V microcontroller I/O. Compared with electromechanical relays, the VOR1142M4 has no contact bounce, providing cleaner signal edges for high-speed industrial counters and encoder signal routing in CNC and process-control equipment.
推荐
Automatic Test Equipment (ATE)
The VOR1142M4 is widely used in ATE pin-electronics cards and switching matrices where hundreds of relays route signals between the device-under-test (DUT) and the test instrumentation. The 19 ohm typical on-resistance introduces negligible series resistance for most measurement paths, while the fast turn-on/off times (sub-millisecond photorelay switching) enable higher test throughput than mechanical relays. The 400 V load voltage rating handles switch-matrix signals from analog buses, and the 140 mA load current supports most low-power analog signal paths. Solid-state construction eliminates contact wear concerns in high-cycle production testing.
推荐
Battery Monitoring and Management
The VOR1142M4 supports battery monitoring in 48 V telecom battery plants, electric vehicle battery management systems (BMS), and uninterruptible power supplies (UPS) by providing isolated switching of cell-balancing resistors and current-shunt monitors. Its 400 V load rating covers stacked lithium-ion packs up to 96 V nominal, while the 3750 Vrms isolation protects the low-voltage BMS microcontroller from high-voltage transients during pack switching events. Because photorelays have very low quiescent current consumption, they do not drain the battery they monitor - critical for long-term standby battery installations.
推荐
Medical Equipment Isolation
The VOR1142M4 provides patient-side isolation in medical monitoring and diagnostic equipment where IEC 60601-1 reinforced isolation is mandatory. Its 3750 Vrms isolation test voltage meets the creepage, clearance, and dielectric-withstand requirements for patient-connected circuits, while the 400 V/140 mA ratings handle signal-line switching in ECG, EEG, and pulse-oximeter front-ends. The GaAlAs IRED input draws only a few milliamps from the host system, preserving battery life in portable medical devices. Solid-state switching eliminates the acoustic and electrical noise that mechanical relays can introduce into sensitive analog measurement paths.
推荐
推荐产品汇总
工程参考数据： VOR1142M4 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | VOR1142M4T | VOR1142B4 | AQZ202 | TLP176G | LH1546AEF |
|---|---|---|---|---|---|---|
| Brand | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology | Panasonic | Toshiba | Vishay Intertechnology |
| Package | 4-SOP (0.180 inch, 4.57 mm) | 4-SOP (0.180 inch, 4.57 mm) - same | 4-SOP (0.180 inch, 4.57 mm) - same | 4-SIP (DIP-4 equivalent) - same footprint class | 4-SOP (2.54 mm pitch) - same footprint class | 4-SOP (0.180 inch, 4.57 mm) - same |
| Load Voltage (max) | 400 V | 400 V | 400 V | 400 V | 350 V (-12.5%) | 350 V (-12.5%) |
| Load Current (continuous) | 140 mA | 140 mA | 140 mA | 300 mA (+114%) | 100 mA (-29%) | 120 mA (-14%) |
| Isolation Voltage | 3750 Vrms | 3750 Vrms | 3750 Vrms | 5000 Vrms | 3750 Vrms | 3750 Vrms |
| Current Limit Protection | Yes | Yes | Yes | No | No | Yes |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
关键差异点
- Includes current-limit protection that competitors typically omit （对比 AQZ202 (Panasonic))
- Higher load voltage rating than Toshiba alternative （对比 TLP176G (Toshiba))
- Lower on-resistance than Toshiba equivalent （对比 TLP176G (Toshiba))
- Standardized 4-SOP (4.57 mm) package with multiple Vishay variants （对比 AQZ202 (Panasonic 4-SIP))
设计说明
The VOR1142M4 IRED forward current must be limited to 5 mA typical / 10 mA maximum through an external resistor. For a 5 V control signal, use a 680 ohm to 1 kohm series resistor; for a 3.3 V microcontroller, use 330 ohm to 470 ohm. According to Vishay datasheet guidance, operating the IRED below 5 mA may fail to fully enhance the MOSFET output stage and increase on-resistance, while exceeding 10 mA shortens LED lifetime. Place a 0.1 uF bypass capacitor close to the LED pins to suppress control-line transients.
Although the VOR1142M4 is a low-power device, the 19 ohm typical on-resistance dissipates power proportional to I-squared-R at the load. At 140 mA continuous load, this is approximately 0.37 W of dissipation inside the 4-SOP package. The 4-SOP has a typical theta-JA of around 150 C/W on a standard JEDEC test board, giving a junction temperature rise of about 56 C above ambient. At 85 C ambient this approaches the 100 C maximum junction rating, so for high-temperature applications ensure adequate PCB copper pour under the output pins for heat-sinking.
The VOR1142M4 in the 4-SOP (4.57 mm) package requires a minimum 0.5 mm creepage distance between the input-side and output-side copper traces to maintain the 3750 Vrms isolation rating. According to Vishay PCB layout recommendations, avoid routing any copper under the package body, keep the LED-side ground plane separate from the MOSFET-side ground plane, and use slot or cut-out in the PCB to maximize clearance. Failure to observe these creepage rules will degrade the isolation voltage below the rated 3750 Vrms.
A frequent design error is to omit a flyback/snubber diode when switching inductive loads with the VOR1142M4. Although the dual-MOSFET output stage includes current-limit protection, inductive loads such as relay coils, solenoids, and transformers can still generate transient overvoltages exceeding the 400 V load rating at turn-off. Add a 100 V to 200 V TVS diode or 10 ohm + 0.01 uF RC snubber across the load to clamp these transients. According to Vishay application notes, the snubber also reduces EMI in adjacent circuitry.
When multiple VOR1142M4 devices are placed near each other on the PCB, isolate the LED anodes and cathodes with separate ground returns to avoid cross-talk between adjacent relays. Use a star-ground topology with the LED-cathode return traces routed directly back to the microcontroller ground pin. According to Vishay's reliability report, this layout minimizes ground bounce and prevents false triggering in dense switch-matrix applications such as ATE and telecom line cards.
合规信息
RoHS compliant per Vishay product page and DigiKey listing. REACH compliance confirmed via PartGenie. Not AEC-Q100 qualified (relay IC, automotive qualification depends on variant). Halogen free status not stated in current data.
