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3KASMC36AHE3_A/I Equivalent & Substitute Parts
Part Overview
The 3KASMC36AHE3_A/I is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is rated for 36V reverse standoff voltage with a 58.1V maximum clamping voltage and 51.6A peak pulse current in a surface mount DO-214AB (SMC) package. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued circuit protection applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 36V |
| Voltage - Breakdown (Min) | 40V |
| Voltage - Clamping (Max) @ Ipp | 58.1V |
| Current - Peak Pulse (10/1000µs) | 51.6A |
| Power - Peak Pulse | 3000W (3kW) |
| Operating Temperature Range | -65°C ~ 185°C (TJ) |
| Package / Case | DO-214AB, SMC |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 3KASMC36AHE3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:
- Voltage - Reverse Standoff: 36V
- Voltage - Breakdown (Min): 40V
- Voltage - Clamping (Max) @ Ipp: 58.1V
- Current - Peak Pulse (10/1000µs): 51.6A
- Power - Peak Pulse: 3000W (3kW)
- Package / Case: DO-214AB, SMC
- Unidirectional Channels: 1
- Type: Zener
All substitute parts listed maintain these core electrical specifications and the DO-214AB surface mount package. Variations in operating temperature range, product status, and manufacturer do not affect functional substitutability within the specified parameter envelope.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse | Power - Peak Pulse | Operating Temperature | Product Status | Package |
|---|---|---|---|---|---|---|---|---|
| 3KASMC36AHE3_A/I | Vishay General Semiconductor | 36V | 58.1V | 51.6A | 3000W | -65°C ~ 185°C | Obsolete | DO-214AB (SMC) |
| 3KASMC36AHE3_B/I | Vishay General Semiconductor | 36V | 58.1V | 51.6A | 3000W | -65°C ~ 185°C | Active | DO-214AB (SMC) |
| 3SMC36A TR13 PBFREE | Central Semiconductor Corp | 36V | 58.1V | 51.6A | 3000W | -65°C ~ 150°C | Active | DO-214AB (SMC) |
| SMDJ36A | EVVO Semi | 36V | 58.1V | 51.6A | 3000W | Not specified | Active | DO-214AB (SMC) |
| SMDJ36A-HR | Littelfuse Inc. | 36V | 58.1V | 51.6A | 3000W | -65°C ~ 150°C | Active | DO-214AB (SMC) |
| SMDJ36A-HRA | Littelfuse Inc. | 36V | 58.1V | 51.6A | 3000W | -65°C ~ 150°C | Active | DO-214AB (SMC) |
| SMDJ36A-HRAT7 | Littelfuse Inc. | 36V | 58.1V | 51.6A | 3000W | -65°C ~ 150°C | Active | DO-214AB (SMC) |
| SMLJ36A-TP | Micro Commercial Co | 36V | 58.1V | 51.6A | 3000W | -55°C ~ 175°C | Active | DO-214AB (SMC) |
| SMLJ36AE3/TR13 | Microchip Technology | 36V | 58.1V | 51.6A | 300W | -55°C ~ 150°C | Active | DO-214AB (SMC) |
| TPSMD36A | Littelfuse Inc. | 36V | 58.1V | 51.6A | 3000W | -65°C ~ 150°C | Active | DO-214AB (SMC) |
| 5.0SMDJ36A | Taiwan Semiconductor Corporation | 36V | 58.1V | 86.1A | 5000W | -55°C ~ 175°C | Active | DO-214AB (SMC) |
Engineering Selection Recommendations
For direct replacement of the obsolete 3KASMC36AHE3_A/I, the 3KASMC36AHE3_B/I from Vishay General Semiconductor is the primary equivalent. This part maintains identical electrical specifications and operating temperature range while offering active product status and established supply availability.
For applications requiring automotive-grade qualification and AEC-Q101 compliance, TPSMD36A from Littelfuse Inc. provides equivalent electrical performance with active status and automotive certification.
The SMLJ36AE3/TR13 from Microchip Technology is electrically equivalent but specifies 300W peak pulse power versus the 3000W rating of the original part. This part is suitable only for applications where peak pulse power requirements do not exceed 300W.
The 5.0SMDJ36A from Taiwan Semiconductor Corporation exceeds the original specifications with 86.1A peak pulse current and 5000W peak pulse power. This part is suitable for applications requiring enhanced transient protection margins but is not a direct equivalent due to higher current and power ratings.
All other listed parts (SMDJ36A, SMDJ36A-HR, SMDJ36A-HRA, SMDJ36A-HRAT7, SMLJ36A-TP, 3SMC36A TR13 PBFREE) maintain the core 36V/58.1V/51.6A/3000W specifications and are functionally equivalent for standard circuit protection applications.
Frequently Asked Questions (FAQ)
Q: Can SMLJ36AE3/TR13 be used as a direct replacement for 3KASMC36AHE3_A/I?
A: SMLJ36AE3/TR13 matches the voltage and current specifications but specifies 300W peak pulse power compared to the original 3000W rating. Use this part only if your application peak pulse power requirement does not exceed 300W. For applications requiring the full 3000W rating, select an alternative from the equivalent group.
Q: What is the difference between SMDJ36A-HR, SMDJ36A-HRA, and SMDJ36A-HRAT7?
A: All three parts from Littelfuse Inc. maintain identical electrical specifications (36V standoff, 58.1V clamping, 51.6A peak pulse, 3000W power). The designations HR, HRA, and HRAT7 represent different product series or packaging variants. Selection depends on your procurement and supply chain requirements.
Q: Is 5.0SMDJ36A a suitable replacement?
A: 5.0SMDJ36A is not a direct equivalent. While it maintains the 36V standoff and 58.1V clamping voltages, it specifies 86.1A peak pulse current and 5000W peak pulse power, exceeding the original 51.6A and 3000W specifications. This part is suitable only for applications requiring enhanced transient protection beyond the original design specifications.
Q: Are all substitute parts RoHS3 compliant?
A: All listed substitute parts are RoHS3 compliant. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no moisture sensitivity restrictions during storage and handling.
Q: What is the operating temperature consideration when selecting a substitute?
A: The original 3KASMC36AHE3_A/I operates from -65°C to 185°C. Most substitutes operate within -65°C to -55°C minimum and -150°C to 175°C maximum ranges. Verify that your selected substitute's operating temperature range encompasses your application's thermal requirements.
Q: Can I use parts from different manufacturers interchangeably?
A: Yes. All listed parts maintain the core electrical specifications (36V standoff, 58.1V clamping, 51.6A peak pulse, 3000W power) and DO-214AB surface mount package. Interchangeability is determined by electrical and mechanical parameter equivalence, not manufacturer identity.
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