SMDJ26A V7G Equivalent & Substitute Parts

Part Overview

The SMDJ26A V7G is a unidirectional transient voltage suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for telecom applications. This component features a 26V reverse standoff voltage with a 42.1V maximum clamping voltage and 71.3A peak pulse current capability in a surface mount DO-214AB (SMC) package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and ensure supply chain availability.

Substiute Parts

SMDJ26A V7G

Taiwan Semiconductor CorporationIn Stock: 1017SMDJ26A V7G Datasheet

Current PartRFQ

SMDJ26A

Alpha & Omega Semiconductor Inc.In Stock: 74220SMDJ26A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMDJ26A V7G is determined by strict electrical and mechanical parameter matching across the following criteria:

Electrical Parameters (Critical):

• Voltage - Reverse Standoff: 26V (Typ)
• Voltage - Breakdown: 28.9V (Min)
• Voltage - Clamping: 42.1V (Max) @ Ipp
• Current - Peak Pulse: 71.3A (10/1000µs)
• Power - Peak Pulse: 3000W

Mechanical Parameters (Critical):

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Device Type: Zener TVS Diode

Compliance Parameters:

• RoHS3 Compliance
• REACH Unaffected Status
• Operating Temperature Range: -55°C to 150°C

Substitute parts must match all critical electrical and mechanical parameters without deviation. Packaging format (Tape & Reel versus bulk) does not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The SMDJ26A manufactured by Alpha & Omega Semiconductor Inc. is a direct functional equivalent to the discontinued SMDJ26A V7G from Taiwan Semiconductor Corporation. Both components share identical electrical specifications, mechanical packaging, and compliance certifications.

Selection Basis:

The Alpha & Omega Semiconductor SMDJ26A is recommended for new designs and replacement applications due to its active product status and confirmed availability of 74,200 units in stock. The component maintains full compatibility with existing PCB layouts and assembly processes designed for the original Taiwan Semiconductor part, as both utilize the DO-214AB (SMC) surface mount package.

Both parts satisfy RoHS3 compliance and REACH unaffected requirements, ensuring regulatory alignment for applications in telecom and general-purpose transient voltage suppression circuits. The identical electrical performance across all critical parameters—including 26V reverse standoff voltage, 42.1V clamping voltage, and 71.3A peak pulse current—ensures seamless functional substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the Alpha & Omega Semiconductor SMDJ26A directly replace the Taiwan Semiconductor SMDJ26A V7G?

A: Yes. Both components are identical in electrical performance, mechanical packaging, and compliance status. The Alpha & Omega part is a direct substitute with no circuit modifications required.

Q: What determines whether a TVS diode can substitute for the SMDJ26A V7G?

A: Substitution requires matching across all critical parameters: 26V reverse standoff voltage, 28.9V minimum breakdown voltage, 42.1V maximum clamping voltage, 71.3A peak pulse current, 3000W peak pulse power, DO-214AB (SMC) package, and -55°C to 150°C operating temperature range. Deviations in any of these parameters disqualify a part from direct substitution.

Q: Does packaging format affect substitution compatibility?

A: No. The Tape & Reel (TR) packaging of the Alpha & Omega part does not affect functional equivalence. Both the original and substitute parts use identical DO-214AB (SMC) surface mount packages suitable for automated assembly.

Q: Are there compliance differences between the two parts?

A: No. Both the Taiwan Semiconductor and Alpha & Omega Semiconductor versions are RoHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: What is the primary reason for substitution in this case?

A: The original SMDJ26A V7G from Taiwan Semiconductor Corporation is discontinued at DiGi Electronics. The Alpha & Omega Semiconductor SMDJ26A provides supply chain continuity with active product status and confirmed inventory availability.

Q: Can the substitute part be used in telecom applications?

A: Yes. The Alpha & Omega Semiconductor SMDJ26A is rated for general-purpose applications and maintains all electrical specifications required for telecom transient voltage suppression circuits originally designed for the Taiwan Semiconductor part.