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SMCJ26CA-M3/9AT Equivalent & Substitute Parts
Part Overview
The SMCJ26CA-M3/9AT is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 26V reverse standoff voltage class and provides transient protection for general-purpose applications. The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across multiple manufacturers and packaging configurations.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 26 | V |
| Voltage - Breakdown (Min) | 28.9 | V |
| Voltage - Clamping (Max) @ Ipp | 42.1 | V |
| Current - Peak Pulse (10/1000µs) | 35.6 | A |
| Power - Peak Pulse | 1500 | W |
| Operating Temperature Range | -55 to 150 | °C |
| Package / Case | DO-214AB, SMC | — |
| Mounting Type | Surface Mount | — |
| Type | Zener | — |
| Bidirectional Channels | 1 | — |
| RoHS Status | ROHS3 Compliant | — |
| MSL Rating | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the SMCJ26CA-M3/9AT are classified based on electrical parameter compatibility and mechanical interchangeability. The primary substitution criteria are:
Critical Parameters for Substitution:
- Voltage - Reverse Standoff: 26V (exact match required)
- Voltage - Clamping (Max) @ Ipp: 42.1V (exact match required)
- Voltage - Breakdown (Min): 28.9V (exact match required)
- Package / Case: DO-214AB, SMC (mechanical compatibility)
- Mounting Type: Surface Mount (PCB assembly compatibility)
- Type: Zener, Bidirectional (functional equivalence)
Substitution Categories:
Direct Equivalents — Identical electrical specifications and packaging. Differ only in manufacturer, packaging format (Tape & Reel vs. Cut Tape), or device suffix codes.
Upgrade Equivalents — Identical voltage ratings and clamping characteristics. May feature higher peak pulse current or power dissipation ratings, providing enhanced transient protection margin.
Higher Power Variants — Maintain voltage specifications but increase peak pulse current and power dissipation. Suitable for applications requiring greater transient energy absorption.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (V) | Voltage - Clamping (Max) @ Ipp (V) | Current - Peak Pulse (A) | Power - Peak Pulse (W) | Operating Temp (°C) | Package | Packaging Format |
|---|---|---|---|---|---|---|---|---|
| SMCJ26CA-M3/9AT | Vishay General Semiconductor | 26 | 42.1 | 35.6 | 1500 | -55 to 150 | DO-214AB, SMC | Tape & Reel (TR) |
| SMCJ26CA-E3/57T | Vishay General Semiconductor | 26 | 42.1 | 35.6 | 1500 | -55 to 150 | DO-214AB, SMC | Cut Tape (CT) & Digi-Reel® |
| SMCJ26CA | EVVO Semi | 26 | 42.1 | 35.7 | 1500 | -55 to 150 | DO-214AB, SMC | Cut Tape (CT) & Digi-Reel® |
| 5.0SMDJ26CA | MDE Semiconductor Inc | 26 | 42.1 | 119 | 5000 | -55 to 150 | DO-214AB, SMC | Tape & Reel (TR) |
| SMCJ26CA-13-F | Diodes Incorporated | 26 | 42.1 | 35.6 | 1500 | -55 to 150 | DO-214AB, SMC | Tape & Reel (TR) |
| SMCJ26CA-TP | Micro Commercial Co | 26 | 42.1 | 35.7 | 1500 | -55 to 175 | DO-214AB, SMC | Tape & Reel (TR) |
| SMDJ26CA | Alpha & Omega Semiconductor Inc. | 26 | 42.1 | 71.3 | 3000 | -55 to 150 | DO-214AB, SMC | Tape & Reel (TR) |
| SMDJ26CA-T7 | Littelfuse Inc. | 26 | 42.1 | 71.3 | 3000 | -65 to 150 | DO-214AB, SMC | Tape & Reel (TR) |
| SMLJ26CA-TP | Micro Commercial Co | 26 | 42.1 | 71.2 | 3000 | -55 to 175 | DO-214AB, SMC | Tape & Reel (TR) |
Engineering Selection Recommendations
All listed substitute parts maintain active production status and ROHS3 compliance, ensuring regulatory alignment with the original SMCJ26CA-M3/9AT. Selection among direct equivalents (SMCJ26CA-E3/57T, SMCJ26CA, SMCJ26CA-13-F, SMCJ26CA-TP) is determined by packaging format availability and lead time requirements. These parts are electrically and mechanically interchangeable with the original component.
Higher power variants (SMDJ26CA, SMDJ26CA-T7, SMLJ26CA-TP, 5.0SMDJ26CA) provide increased peak pulse current and power dissipation while maintaining identical voltage specifications. These are suitable for applications where transient energy levels exceed the 1500W baseline or where design margin enhancement is required. The 5.0SMDJ26CA offers the highest power rating at 5000W with 119A peak pulse current.
Temperature range considerations apply to SMCJ26CA-TP and SMLJ26CA-TP, which extend the upper operating limit to 175°C compared to the standard 150°C. SMDJ26CA-T7 extends the lower operating limit to -65°C. These extended ranges support applications with demanding thermal environments.
All parts are available in surface mount DO-214AB (SMC) package format, ensuring PCB assembly compatibility without design modification.
Frequently Asked Questions (FAQ)
Q: Can SMCJ26CA-E3/57T replace SMCJ26CA-M3/9AT directly?
A: Yes. Both parts are manufactured by Vishay General Semiconductor with identical electrical specifications (26V standoff, 42.1V clamping, 35.6A peak pulse, 1500W power). The difference is packaging format: SMCJ26CA-M3/9AT uses Tape & Reel (TR), while SMCJ26CA-E3/57T uses Cut Tape (CT) & Digi-Reel®. Electrical and mechanical performance are equivalent.
Q: What is the difference between SMCJ26CA and SMDJ26CA variants?
A: Both maintain the 26V reverse standoff and 42.1V clamping voltage. The primary difference is peak pulse current and power dissipation: SMCJ26CA handles 35.6A at 1500W, while SMDJ26CA handles 71.3A at 3000W. SMDJ26CA provides double the transient protection capacity and is suitable for higher-energy transient environments.
Q: Are higher power variants (SMDJ26CA, SMLJ26CA-TP) compatible with the original design?
A: Yes, from an electrical standpoint. All variants maintain the 26V standoff and 42.1V clamping specifications required for circuit protection. Higher power variants can be substituted without circuit redesign. However, verify that the PCB layout and thermal management accommodate the increased power dissipation if sustained transient events are expected.
Q: Does packaging format affect electrical performance?
A: No. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats are assembly and logistics variations only. Electrical characteristics, performance, and reliability are identical. Selection is based on procurement and manufacturing process requirements.
Q: Which substitute offers the widest operating temperature range?
A: SMCJ26CA-TP and SMLJ26CA-TP both extend the upper operating limit to 175°C (versus 150°C standard). SMDJ26CA-T7 extends the lower limit to -65°C (versus -55°C standard). Select based on specific thermal environment requirements.
Q: Are all substitutes ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original SMCJ26CA-M3/9AT.
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