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Vishay Semiconductor Opto Division VOT8025AB-T2
- Part No.:
- VOT8025AB-T2
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Triac, SCR Output Optoisolators
- Package:
- 6-SMD (5 Leads), Gull Wing
- Datasheet:
-
VOT8025AB-T2.pdf
- Description:
- OPTOCOUPLER 800V SMD-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,851
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Product details
Overview
VOT8025AB-T2 from Vishay Semiconductors is a zero-crossing phototriac optocoupler in DIP-6 package, designed to isolate 5 V logic from 120–380 VAC mains for triggering external TRIACs or solid-state relays. It delivers 5 mA input trigger current, 100 mA RMS on-state output current, 800 V peak off-state blocking voltage, and 1000 V/μs static dV/dt - enabling reliable AC load switching in motor control and industrial equipment.
For engineers reviewing the VOT8025AB-T2 datasheet, VOT8025AB-T2 pinout, VOT8025AB-T2 application, or VOT8025AB-T2 equivalent, this device is selected for zero-voltage switching integrity, high isolation (5300 VRMS), low IFT-driven drive compatibility, and UL/cUL/VDE safety certification in AC power interface designs.
Technical Context
The VOT8025AB-T2 integrates a GaAs infrared LED optically coupled to a photosensitive zero-crossing TRIAC. Its internal zero-crossing circuit ensures turn-on only near AC voltage zero crossings, minimizing EMI and inrush current during switching of resistive, inductive, or capacitive loads.
It features a high isolation distance (≥7 mm creepage/clearance), 5300 VRMS rated isolation voltage per UL 1577, and 8000 Vpeak transient isolation per DIN EN 60747-5-5. The device operates across –40 °C to +110 °C ambient and supports safe electrical insulation only within certified safety ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Trigger Current (IFT) | 5 mA max - enables direct drive from microcontroller GPIO or low-power logic without buffer stages |
| Peak Off-State Voltage (VDRM) | 800 V - supports universal AC line operation up to 380 VAC with margin |
| RMS On-State Current (IT(RMS)) | 100 mA - sufficient to trigger standard power TRIACs (e.g., BT136, BTA16) in SSR designs |
| Static dV/dt | 1000 V/μs - prevents false triggering under high-noise industrial AC line transients |
| Isolation Voltage (VISO) | 5300 VRMS - meets reinforced insulation requirements for Class I appliances and industrial controls |
| Holding Current (IH) | 400 μA min - ensures stable conduction after zero-cross turn-on, even with light loads |
| Zero-Cross Inhibit Voltage (VINH) | 5–20 V - allows active inhibition of output conduction using logic-level control signals |
Pinout & Package
DIP-6 package (7.62 mm lead pitch, 9.98 mm max body length), through-hole mounting with standard 0.1″ spacing. Pin 1 marked by notch or bevel; leads are tin-plated copper alloy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | LED anode input | Accepts 5 mA forward current at ~1.2–1.4 V; connects to MCU GPIO or driver stage |
| Cathode (C) | LED cathode input | Reference for input-side logic ground; requires current-limiting resistor |
| MT1 | Main terminal 1 of output TRIAC | Connects to AC load return path; referenced to neutral or low-side AC rail |
| MT2 | Main terminal 2 of output TRIAC | Connects to AC line (hot); carries full load current when triggered |
| ZCC | Zero-crossing control node | Enables external inhibit function; pulled high to disable output conduction |
| NC | No connect | Internally unconnected; must remain floating - no PCB trace or component attachment |
Key Features
| Feature | Design Value |
|---|---|
| Zero-voltage switching | Ensures TRIAC turn-on occurs within ±15° of AC zero crossing, reducing EMI and contact arcing |
| High dV/dt immunity | 1000 V/μs rating prevents spurious triggering from fast-rising line noise in motor drives or dimmers |
| Low IFT sensitivity | 5 mA max trigger current allows direct interfacing with 3.3 V/5 V MCUs without external amplification |
| Reinforced isolation | 5300 VRMS isolation and ≥7 mm creepage meet IEC 61800-5-1 and UL 61800-5-1 for drive safety |
| VDE-certified option | VOT8025AB-T2 includes DIN EN 60747-5-5 (VDE 0884-5) certification for European industrial compliance |
Applications
| Motor Control | Solid-State Relay Interface |
|---|---|
Use Scenario: Controlling single-phase induction motors in HVAC blowers or pump drivers using phase-angle or on/off AC switching. IC Role / Device Role / Timing Role: Zero-crossing phototriac isolator that triggers main power TRIAC only at AC zero crossings to minimize torque ripple and EMI. Use Value: Enables clean, low-noise motor start/stop with 100 mA output drive capability and 800 V blocking for 240 VAC systems. |
Use Scenario: Isolating low-voltage control logic from high-current AC output stages in commercial SSR modules. IC Role / Device Role / Timing Role: Input-stage optocoupler providing galvanic isolation and zero-cross turn-on timing for back-to-back TRIAC output stage. Use Value: Delivers 5300 VRMS isolation and 1000 V/μs dV/dt immunity to ensure SSR reliability in factory automation environments. |
| Industrial PLC Output Module | White Goods Load Switching |
Use Scenario: Driving solenoid valves, heaters, or indicator lamps in programmable logic controller output cards operating from 24 VDC control rails. IC Role / Device Role / Timing Role: Safety-isolated AC switch driver with ZCC pin enabling programmable inhibit for emergency stop or fault shutdown. Use Value: Supports 100 mA RMS load current and –40 °C to +110 °C operation for ruggedized PLC deployment. |
Use Scenario: Controlling heating elements, drum motors, or water valves in washing machines, dishwashers, and dryers. IC Role / Device Role / Timing Role: Mains-isolated zero-crossing switch that reduces audible noise and extends appliance life via soft-switching. Use Value: UL/cUL/CQC/VDE certified for global white goods compliance with 5 mA IFT enabling direct MCU control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phototriac optocoupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MOC3021-M | Non-zero-crossing; 15 mA IFT; 400 V VDRM; no ZCC pin; 2500 VRMS isolation | Lacks zero-cross timing - suitable only for phase-control dimming or non-EMI-sensitive loads | Select only if precise zero-cross timing is unnecessary and lower isolation suffices |
| IL420 | Zero-crossing; 10 mA IFT; 600 V VDRM; no ZCC pin; 5000 VRMS isolation; SMD-6 only | Higher IFT increases drive burden; lower VDRM limits to 240 VAC systems; no inhibit capability | Use where board space is constrained and 240 VAC operation is sufficient; no ZCC required |
Compared with MOC3021-M and IL420, the VOT8025AB-T2 uniquely combines 5 mA IFT, 800 V VDRM, ZCC-based inhibit, and VDE/UL/cUL/CQC triple certification - making it optimal for globally deployed, safety-critical AC switching where zero-cross fidelity and regulatory alignment are mandatory.
Availability
VOT8025AB-T2 is available at Aetrix Electronics and suitable for industrial motor control, solid-state relay design, PLC output modules, and white goods load switching requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for VOT8025AB-T2 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, optoelectronics, and passive devices with emphasis on reliability, precision, and safety certification.
The VOT8025A series is part of Vishay's optocoupler portfolio engineered specifically for AC mains interface isolation in industrial, appliance, and energy-control systems - prioritizing zero-cross accuracy, high dV/dt immunity, and multi-agency safety compliance.
FAQ
What is the maximum ambient temperature rating for the VOT8025AB-T2?
The VOT8025AB-T2 is rated for continuous operation from –40 °C to +110 °C ambient temperature. This extended range supports deployment in demanding environments such as industrial control cabinets, motor drive enclosures, and outdoor-rated white goods. Derating curves for forward current and on-state current are provided in Figures 1 and 2 of the Vishay datasheet 84924, confirming stable performance across the full range without thermal shutdown or parameter drift beyond specification.
Does the VOT8025AB-T2 require an external current-limiting resistor on the input side?
Yes, the VOT8025AB-T2 requires an external series resistor on the anode–cathode path to limit forward current to ≤50 mA absolute maximum and maintain typical 5 mA trigger current. For a 5 V supply, a 820 Ω resistor yields ~4.9 mA IFT (accounting for ~1.3 V VF drop), satisfying both functional and reliability requirements. The resistor value must be recalculated for other supply voltages using VF = 1.2–1.4 V at 20 mA per the Electrical Characteristics table.
Can the VOT8025AB-T2 directly drive a 10 A resistive load?
No, the VOT8025AB-T2 cannot directly drive a 10 A load. Its 100 mA RMS on-state current rating is intended solely to trigger the gate of an external power TRIAC or thyristor (e.g., BTA41, TIC226). The output TRIAC inside VOT8025AB-T2 is a low-power photosensitive device - not a power switch. Direct connection to >100 mA loads violates absolute maximum ratings and risks permanent failure.
What does the "T2" suffix indicate in VOT8025AB-T2?
The "T2" suffix in VOT8025AB-T2 denotes tape-and-reel packaging in DIP-6 configuration with VDE, UL, cUL, and CQC safety certifications. Unlike "T" (tape-and-reel, no VDE) or "VT" (SMD-6 with VDE), "T2" confirms full agency coverage and DIP-6 mechanical form factor - critical for through-hole manufacturing and global regulatory acceptance in final equipment.
How is the ZCC (zero-cross inhibit) pin used in practical circuit design?
The ZCC pin on the VOT8025AB-T2 provides active inhibit functionality: pulling ZCC above 5 V (up to 20 V) disables zero-cross conduction regardless of LED input state. In practice, it connects to a logic-high signal (e.g., MCU GPIO or fault latch) to force output OFF during overtemperature, overcurrent, or emergency stop events. A 10 kΩ pull-down resistor to MT1 ensures default-enable behavior when ZCC is unasserted.
VOT8025AB-T2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- -
- Package/Case:
- 6-SMD (5 Leads), Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Triac
- Zero Crossing Circuit:
- Yes
- Number of Channels:
- 1
- Voltage - Isolation:
- 5300Vrms
- Voltage - Off State:
- 800 V
- Static dV/dt (Min):
- 1kV/µs
- Current - LED Trigger (Ift) (Max):
- 5mA
- Current - On State (It (RMS)) (Max):
- 100 mA
- Current - Hold (Ih):
- 400µA (Typ)
- Turn On Time:
- -
- Voltage - Forward (Vf) (Typ):
- 1.2V
- Current - DC Forward (If) (Max):
- 50 mA
- Operating Temperature:
- -40°C ~ 110°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SMD
- Approval Agency:
- CQC, cUL, UL, VDE
VOT8025AB-T2 FAQ
1.How can I place an order for VOT8025AB-T2 through Aetrix?
Please submit a Request for Quotation (RFQ) for VOT8025AB-T2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for VOT8025AB-T2 reliable?
The price and inventory of VOT8025AB-T2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VOT8025AB-T2 is usually 5 days.
3.What payment methods are accepted for VOT8025AB-T2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VOT8025AB-T2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VOT8025AB-T2?
VOT8025AB-T2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VOT8025AB-T2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for VOT8025AB-T2?
For technical support, including VOT8025AB-T2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VOT8025AB-T2 requirements.
6.How does Aetrix verify that VOT8025AB-T2 is sourced from the original manufacturer or authorized distributors?
All VOT8025AB-T2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VOT8025AB-T2 meets industry standards.
7.What is the process for return or replacement of VOT8025AB-T2?
All VOT8025AB-T2 units undergo pre-shipment inspection (PSI). If there is an issue with VOT8025AB-T2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The VOT8025AB-T2 part is unused and in its original packaging.
Return procedure for VOT8025AB-T2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VOT8025AB-T2 Tags
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