TPSMD26CA Equivalent & Substitute Parts

Part Overview

The TPSMD26CA is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for surface mount applications in automotive-grade circuits. This component operates with a 26V reverse standoff voltage and provides 42.1V clamping at peak pulse current, delivering 3000W peak pulse power dissipation. The part is actively produced, AEC-Q101 qualified, and ROHS3 compliant. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining equivalent electrical and mechanical performance.

Substiute Parts

TPSMD26CA

Littelfuse Inc.In Stock: 4508TPSMD26CA Datasheet

Current PartRFQ

3.0SMCJ26CA-AU_R1_000A1

Panjit International Inc.In Stock: 13753.0SMCJ26CA-AU_R1_000A1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPSMD26CA is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 26V
• Voltage - Breakdown (Min): 28.9V
• Voltage - Clamping (Max) @ Ipp: 42.1V
• Current - Peak Pulse (10/1000µs): ≥71.2A
• Power - Peak Pulse: 3000W
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q101

The substitute part 3.0SMCJ26CA-AU_R1_000A1 manufactured by Panjit International Inc. meets all substitution criteria. Both parts are identical in voltage ratings, clamping characteristics, and power dissipation. Peak pulse current differs by 0.1A (71.3A vs. 71.2A), which is within acceptable tolerance for this component category. Both parts are automotive-grade, AEC-Q101 qualified, and packaged in DO-214AB (SMC) surface mount format.

Parameter Comparison

Engineering Selection Recommendations

Both the TPSMD26CA and 3.0SMCJ26CA-AU_R1_000A1 are active production components with automotive-grade qualification and AEC-Q101 certification. Selection between these parts should be based on:

• Procurement availability and lead time
• Supply chain requirements and supplier relationships
• Operating temperature requirements: The TPSMD26CA supports -65°C minimum junction temperature, while the Panjit substitute supports -55°C minimum. Applications requiring operation below -55°C must use the Littelfuse part.
• Inventory status: TPSMD26CA has 4400 units in stock; 3.0SMCJ26CA-AU_R1_000A1 has 1303 units in stock.

Both parts are functionally equivalent for applications within the -55°C to 150°C operating range and meet all regulatory compliance requirements (ROHS3, REACH, EAR99).

Frequently Asked Questions (FAQ)

Q: Can the 3.0SMCJ26CA-AU_R1_000A1 be used as a direct replacement for the TPSMD26CA?

A: Yes, for applications operating within -55°C to 150°C junction temperature range. Both parts have identical voltage ratings (26V standoff, 28.9V breakdown, 42.1V clamping), peak pulse current within 0.1A tolerance, and identical 3000W power dissipation. Both are automotive-grade, AEC-Q101 qualified, and use the same DO-214AB (SMC) surface mount package.

Q: What is the difference in operating temperature range?

A: The TPSMD26CA operates from -65°C to 150°C (TJ), while the Panjit substitute operates from -55°C to 150°C (TJ). The Littelfuse part supports 10°C lower minimum junction temperature. For applications requiring operation below -55°C, the TPSMD26CA must be used.

Q: Are both parts automotive qualified?

A: Yes. Both the TPSMD26CA and 3.0SMCJ26CA-AU_R1_000A1 are automotive-grade components with AEC-Q101 qualification, ROHS3 compliance, and MSL 1 (unlimited moisture sensitivity level).

Q: Do these parts have identical package dimensions?

A: Yes. Both parts use the DO-214AB (SMC) surface mount package with identical mechanical specifications, allowing direct PCB footprint compatibility.

Q: What is the peak pulse current difference between these parts?

A: The TPSMD26CA is rated at 71.3A peak pulse current (10/1000µs), while the Panjit substitute is rated at 71.2A. This 0.1A difference is within acceptable tolerance for TVS diode applications and does not affect functional equivalence.