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3KASMC13HE3_A/I Equivalent & Substitute Parts
Part Overview
The 3KASMC13HE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates at 13V reverse standoff with a 23.8V maximum clamping voltage and 126A peak pulse current in a surface mount DO-214AB (SMCJ) package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 3KASMC13HE3_A/I |
| Manufacturer | Vishay General Semiconductor - Diodes Division |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener, Unidirectional |
| Voltage - Reverse Standoff (Typ) | 13V |
| Voltage - Breakdown (Min) | 14.4V |
| Voltage - Clamping (Max) @ Ipp | 23.8V |
| Current - Peak Pulse (10/1000µs) | 126A |
| Power - Peak Pulse | 3000W |
| Package / Case | DO-214AB, SMC |
| Mounting Type | Surface Mount |
| Operating Temperature | -65°C ~ 185°C (TJ) |
| Grade | Automotive |
| Qualification | AEC-Q101 |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 3KASMC13HE3_A/I is determined by the following critical parameters:
- Voltage - Reverse Standoff: 13V (all substitutes match)
- Voltage - Breakdown (Min): 14.4V (all substitutes match)
- Voltage - Clamping (Max) @ Ipp: 21.5V or 23.8V (acceptable range for transient suppression)
- Current - Peak Pulse (10/1000µs): 69.7A to 233A (all substitutes meet or exceed minimum requirements)
- Power - Peak Pulse: 1500W to 5000W (all substitutes meet or exceed minimum requirements)
- Package / Case: DO-214AB, SMC (all substitutes use identical package)
- Mounting Type: Surface Mount (all substitutes are surface mount)
- RoHS Status: ROHS3 Compliant (all substitutes comply)
- MSL: 1 (Unlimited) (all substitutes match)
Substitutes are grouped into two categories based on electrical performance: direct replacements with matching or superior clamping voltage and current ratings, and functional equivalents with lower peak pulse current suitable for less demanding applications.
Parameter Comparison
| Parameter | 3KASMC13HE3_A/I | 3KASMC13AHE3_B/I | 5.0SMDJ13A | SMCJ13A | SMCJ13A-HR | SMCJ13A-HRA | SMCJ13A-HRAT7 | SMCJ13A-TP | SMDJ13A |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Vishay | Vishay | MDE Semiconductor | ANBON | Littelfuse | Littelfuse | Littelfuse | Micro Commercial Co | Alpha & Omega |
| Voltage - Reverse Standoff (Typ) | 13V | 13V | 13V | 13V | 13V | 13V | 13V | 13V | 13V |
| Voltage - Breakdown (Min) | 14.4V | 14.4V | 14.4V | 14.4V | 14.4V | 14.4V | 14.4V | 14.4V | 14.4V |
| Voltage - Clamping (Max) @ Ipp | 23.8V | 21.5V | 21.5V | 21.5V | 21.5V | 21.5V | 21.5V | 21.5V | 21.5V |
| Current - Peak Pulse (10/1000µs) | 126A | 140A | 233A | 69.7A | 69.8A | 69.8A | 69.8A | 69.8A | 139.6A |
| Power - Peak Pulse | 3000W | 3000W | 5000W | 1500W | 1500W | 1500W | 1500W | 1500W | 3000W |
| Package / Case | DO-214AB, SMC | DO-214AB, SMC | DO-214AB, SMC | DO-214AB, SMC | DO-214AB, SMC | DO-214AB, SMC | DO-214AB, SMC | DO-214AB, SMC | DO-214AB, SMC |
| Operating Temperature | -65°C ~ 185°C | -65°C ~ 185°C | -55°C ~ 150°C | -55°C ~ 150°C | -65°C ~ 150°C | -65°C ~ 150°C | -65°C ~ 150°C | -55°C ~ 175°C | -55°C ~ 150°C |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Direct Replacement (Preferred for Automotive Applications):
The 3KASMC13AHE3_B/I from Vishay is the primary direct replacement. It maintains the same 13V reverse standoff and 14.4V minimum breakdown voltage, with improved peak pulse current (140A vs. 126A) and identical 3000W peak pulse power rating. Both parts carry AEC-Q101 automotive qualification and operate across -65°C to 185°C. The 3KASMC13AHE3_B/I is currently in active production status.
High-Performance Alternative:
The 5.0SMDJ13A from MDE Semiconductor provides superior transient suppression capability with 233A peak pulse current and 5000W peak pulse power. This part is suitable for applications requiring enhanced protection margins. Operating temperature range is -55°C to 150°C.
General-Purpose Substitutes (Lower Power Applications):
The SMCJ13A series from multiple manufacturers (ANBON, Littelfuse, Micro Commercial Co) and SMDJ13A from Alpha & Omega provide functional equivalents with 1500W to 3000W peak pulse power ratings. These parts are suitable for applications where the original 126A peak pulse current specification exceeds system requirements. All maintain the 13V reverse standoff and 21.5V clamping voltage.
Littelfuse SMCJ-HR Series Variants:
SMCJ13A-HR, SMCJ13A-HRA, and SMCJ13A-HRAT7 are functionally identical with 69.8A peak pulse current and 1500W peak pulse power. These parts extend the upper operating temperature to 150°C and are available in active production status with full RoHS3 compliance.
Frequently Asked Questions (FAQ)
Q: Can the 3KASMC13HE3_A/I be directly replaced with SMCJ13A variants?
A: SMCJ13A variants are functional substitutes but with reduced peak pulse current (69.8A vs. 126A) and lower peak pulse power (1500W vs. 3000W). They are suitable only for applications where transient energy levels do not exceed 1500W. All maintain identical 13V reverse standoff and 21.5V clamping voltage specifications.
Q: What is the difference between the 3KASMC13AHE3_B/I and 5.0SMDJ13A?
A: Both are direct electrical substitutes with matching voltage specifications. The 5.0SMDJ13A provides higher peak pulse current (233A vs. 140A) and peak pulse power (5000W vs. 3000W), offering greater transient suppression capability. The 3KASMC13AHE3_B/I maintains the original 3000W rating and is from the same manufacturer as the obsolete part.
Q: Are all substitute parts in the same DO-214AB package?
A: Yes. All listed substitutes use the DO-214AB (SMC) surface mount package, ensuring identical PCB footprint and mounting compatibility.
Q: Do all substitutes meet automotive qualification requirements?
A: The 3KASMC13AHE3_B/I carries AEC-Q101 qualification matching the original part. The 5.0SMDJ13A, SMCJ13A variants, and SMDJ13A do not list AEC-Q101 qualification in the provided specifications. For automotive applications requiring AEC-Q101 certification, the 3KASMC13AHE3_B/I is the recommended choice.
Q: What is the operating temperature range difference between substitutes?
A: The original 3KASMC13HE3_A/I operates from -65°C to 185°C. The 3KASMC13AHE3_B/I matches this range. Most other substitutes operate from -55°C to 150°C, with SMCJ13A-TP extending to 175°C. Applications requiring operation above 150°C should use the 3KASMC13AHE3_B/I or original part specifications.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original part's environmental compliance status.
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