VOL618AT Equivalent & Substitute Parts

Part Overview

The VOL618AT is an optoisolator with phototransistor output manufactured by Vishay Semiconductor Opto Division. This single-channel device provides 5000Vrms isolation and is housed in a DO-214AB (SMC) surface mount package. The component is classified as Active product status with full inventory availability. Equivalent and substitute parts are identified based on matching electrical characteristics, isolation ratings, output specifications, and mechanical packaging requirements to ensure direct functional replacement in circuit applications.

Substiute Parts

VOL618AT

Vishay Semiconductor Opto DivisionIn Stock: 60434VOL618AT Datasheet

Current PartRFQ

VOL618AT

Vishay Semiconductor Opto DivisionIn Stock: 60434VOL618AT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the VOL618AT optoisolator is determined by strict equivalence across the following critical parameters:

Isolation and Safety Specifications:

• Voltage isolation rating of 5000Vrms
• Single-channel configuration

Electrical Performance Characteristics:

• Current transfer ratio range: 50% minimum to 600% maximum at 1mA input
• Maximum output voltage: 80V
• Maximum output current per channel: 50mA
• Vce saturation: 400mV maximum
• Turn-on/turn-off time: 6µs and 5.5µs typical
• Rise/fall time: 3.5µs and 5µs typical

Mechanical and Environmental Requirements:

• Package type: DO-214AB (SMC) surface mount
• Operating temperature range: -55°C to 110°C
• Input type: DC
• Output type: Transistor

Parts meeting all specified parameters within these categories qualify as direct substitutes for the VOL618AT in equivalent applications.

Parameter Comparison

Engineering Selection Recommendations

The VOL618AT maintains Active product status with confirmed inventory availability of 60,400 pieces in new original condition. Selection of equivalent optoisolator components for the VOL618AT should prioritize parts with identical electrical specifications and mechanical packaging to ensure direct circuit compatibility.

When evaluating substitute optoisolators, confirm that the candidate part meets all specified isolation voltage, current transfer ratio, output voltage and current ratings, and saturation characteristics. The DO-214AB (SMC) surface mount package is a critical requirement for PCB assembly compatibility.

Compliance certifications including ECCN EAR99 classification and HTSUS code 8541.49.8000 apply to this product category. Moisture sensitivity level MSL 1 (Unlimited) indicates no special storage or handling requirements beyond standard component practices.

Frequently Asked Questions (FAQ)

Q: What defines a valid substitute for the VOL618AT optoisolator?

A: A valid substitute must match the VOL618AT across all critical parameters: 5000Vrms isolation rating, single-channel configuration, 50% to 600% current transfer ratio at 1mA, 80V maximum output voltage, 50mA maximum output current, 400mV maximum Vce saturation, and DO-214AB (SMC) surface mount package. Operating temperature range must span -55°C to 110°C.

Q: Can optoisolators with different isolation voltage ratings substitute for the VOL618AT?

A: No. The 5000Vrms isolation rating is a fundamental specification. Substitutes must maintain this exact isolation voltage to preserve circuit safety and performance characteristics.

Q: Is the DO-214AB (SMC) package interchangeable with other optoisolator packages?

A: No. The DO-214AB (SMC) surface mount package is specific to this component form factor. Substitutes must use the identical package type to ensure PCB footprint and assembly compatibility.

Q: What is the significance of the current transfer ratio range (50% to 600% @ 1mA)?

A: The current transfer ratio defines the relationship between input LED current and output transistor current. This range establishes the gain characteristics of the optoisolator. Substitutes must operate within this specified range to maintain circuit performance.

Q: Does the VOL618AT require special handling or storage conditions?

A: No. The Moisture Sensitivity Level (MSL) rating of 1 (Unlimited) indicates that this component has no special moisture sensitivity requirements and can be stored and handled using standard component practices.

Q: Are there any compliance or regulatory considerations for optoisolator selection?

A: The VOL618AT carries ECCN classification EAR99 and HTSUS code 8541.49.8000. Substitute parts should maintain equivalent compliance status for regulatory consistency.