SMCJ26A V6G Equivalent & Substitute Parts

Part Overview

The SMCJ26A V6G 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 37A 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 that maintain electrical and mechanical compatibility for continued system support and new designs.

Substiute Parts

SMCJ26A V6G

Taiwan Semiconductor CorporationIn Stock: 1189SMCJ26A V6G Datasheet

Current PartRFQ

SMCJ26A

MDDIn Stock: 18120SMCJ26A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMCJ26A V6G is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 26V
• Voltage - Breakdown (Min): 28.9V
• Voltage - Clamping (Max) @ Ipp: 42.1V
• Power - Peak Pulse: 1500W (1.5kW)
• Type: Zener, Unidirectional

Mechanical Equivalence Criteria:

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount

Compliance Equivalence Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Substitute parts must satisfy all electrical parameters within specified tolerances and maintain identical mechanical packaging to ensure direct board-level compatibility without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

The SMCJ26A manufactured by MDD is a direct functional substitute for the discontinued SMCJ26A V6G. Both components share identical voltage specifications (26V standoff, 28.9V breakdown, 42.1V clamping) and package configuration (DO-214AB, SMC surface mount), enabling direct board-level replacement without design modifications.

The MDD variant exhibits a peak pulse current rating of 35.7A compared to the original 37A specification. This represents a 3.5% reduction in peak pulse current capacity. Applications requiring the full 37A peak pulse current specification should evaluate whether the 35.7A rating satisfies system transient protection requirements.

The MDD substitute operates across a narrower temperature range (-50°C to 150°C) compared to the original part (-55°C to 150°C). Systems requiring operation below -50°C ambient temperature must confirm compatibility with the reduced lower temperature limit.

Both components maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, ensuring regulatory and environmental compatibility. The MDD part is currently in active production with substantial inventory availability (18,100 pieces), providing supply chain continuity for the discontinued original component.

Frequently Asked Questions (FAQ)

Q: Can the SMCJ26A (MDD) be used as a direct replacement for the SMCJ26A V6G (Taiwan Semiconductor)?

A: Yes, the MDD variant is a direct substitute for board-level installation. Both components feature identical voltage specifications, clamping characteristics, and DO-214AB surface mount packaging. No PCB layout or design modifications are required for substitution.

Q: What is the significance of the 35.7A versus 37A peak pulse current difference?

A: The MDD substitute is rated for 35.7A peak pulse current compared to the original 37A specification. This 3.5% reduction in peak current capacity should be evaluated against system transient protection requirements. Applications with peak pulse currents below 35.7A are unaffected by this specification difference.

Q: Are there temperature range limitations with the MDD substitute?

A: The MDD variant operates from -50°C to 150°C, compared to the original -55°C to 150°C range. The lower temperature limit is 5°C higher. Systems requiring operation below -50°C ambient temperature must confirm compatibility with this narrower range.

Q: Do both parts share identical packaging and mounting characteristics?

A: Yes. Both the original SMCJ26A V6G and the MDD SMCJ26A utilize the DO-214AB (SMC) surface mount package. Footprint, lead spacing, and mounting requirements are identical, enabling direct PCB substitution without layout changes.

Q: Are regulatory and compliance certifications equivalent between the two parts?

A: Yes. Both components are ROHS3 compliant, carry MSL 1 (unlimited moisture sensitivity), and maintain REACH unaffected status. Regulatory and environmental compliance requirements are satisfied by either component.

Q: What is the availability status of the substitute part?

A: The MDD SMCJ26A is in active production with 18,100 pieces currently in stock, providing immediate availability and supply chain continuity for the discontinued Taiwan Semiconductor original.