VOS627A-4T Equivalent & Substitute Parts

Part Overview

The VOS627A-4T is an optoisolator with phototransistor output manufactured by Vishay Semiconductor Opto Division. This component provides galvanic isolation with a 3750Vrms isolation voltage rating and operates as a single-channel optocoupler in a 4-SSOP surface mount package. The part is currently in active production status with 45,400 units in stock.

Substitute parts are identified when component availability becomes limited, supply chain disruptions occur, or inventory levels require alternative sourcing while maintaining identical electrical and mechanical performance characteristics.

Substiute Parts

VOS627A-4T

Vishay Semiconductor Opto DivisionIn Stock: 45433VOS627A-4T Datasheet

Current PartRFQ

VOS627A-4X001T

Vishay Semiconductor Opto DivisionIn Stock: 3910VOS627A-4X001T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the VOS627A-4T is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters establish the substitution criteria:

Electrical Parameters:

• Isolation voltage: 3750Vrms
• Current transfer ratio range: 160% to 320% @ 5mA
• Maximum output voltage: 80V
• Maximum output current per channel: 50mA
• Maximum Vce saturation: 400mV
• Operating temperature range: -55°C to 110°C

Mechanical Parameters:

• Package type: 4-SSOP
• Physical dimensions: 4-SOIC (0.173", 4.40mm Width)
• Mounting type: Surface Mount

Functional Parameters:

• Output type: Transistor
• Number of channels: 1
• Input type: AC, DC

All substitute parts must match these parameters exactly to ensure direct interchangeability without circuit redesign or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

Both the VOS627A-4T and VOS627A-4X001T are active production components manufactured by Vishay Semiconductor Opto Division. Selection between these parts is based on availability and supply chain considerations rather than performance differentiation.

VOS627A-4T is the primary part number with higher inventory availability (45,400 units in stock). This part should be the first selection choice for new designs and production orders.

VOS627A-4X001T is a parametric equivalent with lower inventory levels (3,804 units in stock). This part number is suitable for use when the primary part number is unavailable or when supply chain optimization requires alternative sourcing from the same manufacturer.

Both parts carry identical electrical specifications, mechanical dimensions, and compliance certifications (ECCN: EAR99; HTSUS: 8541.49.8000). No circuit modifications, testing protocols, or design validation are required when substituting between these part numbers.

Frequently Asked Questions (FAQ)

Q: Can VOS627A-4X001T be used as a direct replacement for VOS627A-4T?

A: Yes. VOS627A-4X001T is a parametric equivalent with identical electrical characteristics, isolation voltage, current transfer ratio, output specifications, and package dimensions. Direct substitution is supported without circuit modification.

Q: Are there differences in the package or pin configuration between these parts?

A: No. Both parts use the 4-SSOP package with identical physical dimensions (4-SOIC, 0.173", 4.40mm Width). Pin configuration and PCB footprint requirements are identical.

Q: What is the difference between the part numbers VOS627A-4T and VOS627A-4X001T?

A: The part numbers differ in their suffix designation. VOS627A-4X001T includes an extended suffix that typically indicates a specific manufacturing date code or internal Vishay tracking identifier. The electrical and mechanical specifications are identical.

Q: Do both parts have the same operating temperature range?

A: Yes. Both parts operate across the temperature range of -55°C to 110°C with identical thermal performance characteristics.

Q: Are moisture sensitivity requirements the same for both parts?

A: Yes. Both parts have Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can these parts be used interchangeably in existing production?

A: Yes. Both parts are active production components from the same manufacturer with identical specifications. Existing designs using VOS627A-4T can incorporate VOS627A-4X001T without design changes or re-qualification.

Q: What is the current transfer ratio specification for these optoisolators?

A: The current transfer ratio ranges from 160% to 320% when measured at 5mA input current. This specification is identical for both part numbers.

Q: What is the maximum isolation voltage rating?

A: Both parts provide 3750Vrms isolation voltage, enabling use in high-voltage isolation applications.