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3KASMC36AHM3_A/I Equivalent & Substitute Parts
Part Overview
The 3KASMC36AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the DO-214AB (SMC) package. This component is rated for 36V reverse standoff voltage with a 58.1V maximum clamping voltage and 51.6A peak pulse current capability, delivering 3000W peak pulse power dissipation. The part is qualified to AEC-Q101 automotive standards and complies with ROHS3 and REACH requirements.
The 3KASMC36AHM3_A/I is currently listed as obsolete. Equivalent and substitute parts are available from multiple manufacturers with identical or superior electrical characteristics and active product status, ensuring design continuity and supply chain reliability.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 36 | V |
| Voltage - Breakdown (Min) | 40 | V |
| Voltage - Clamping (Max) @ Ipp | 58.1 | V |
| Current - Peak Pulse (10/1000µs) | 51.6 | A |
| Power - Peak Pulse | 3000 | W |
| Operating Temperature Range | -65°C ~ 185°C | TJ |
| Package / Case | DO-214AB, SMC | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the 3KASMC36AHM3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:
- 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
- Package / Case: DO-214AB, SMC
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
All substitute parts listed maintain these core electrical specifications and package requirements. Variations in operating temperature range, product status, and manufacturer do not affect functional substitutability within the defined electrical envelope.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (V) | Voltage - Clamping (V) | Current - Peak Pulse (A) | Power - Peak Pulse (W) | Operating Temperature (°C) | Product Status | AEC-Q101 |
|---|---|---|---|---|---|---|---|---|
| 3KASMC36AHM3_A/I | Vishay | 36 | 58.1 | 51.6 | 3000 | -65 ~ 185 | Obsolete | Yes |
| 3KASMC36AHM3_B/I | Vishay | 36 | 58.1 | 51.6 | 3000 | -65 ~ 185 | Active | Yes |
| 3SMC36A TR13 PBFREE | Central Semiconductor Corp | 36 | 58.1 | 51.6 | 3000 | -65 ~ 150 | Active | No |
| SMDJ36A | EVVO Semi | 36 | 58.1 | 51.6 | 3000 | — | Active | No |
| SMDJ36A-HR | Littelfuse Inc. | 36 | 58.1 | 51.6 | 3000 | -65 ~ 150 | Active | No |
| SMDJ36A-HRA | Littelfuse Inc. | 36 | 58.1 | 51.6 | 3000 | -65 ~ 150 | Active | No |
| SMDJ36A-HRAT7 | Littelfuse Inc. | 36 | 58.1 | 51.6 | 3000 | -65 ~ 150 | Active | No |
| SMLJ36A-TP | Micro Commercial Co | 36 | 58.1 | 51.6 | 3000 | -55 ~ 175 | Active | No |
| SMLJ36AE3/TR13 | Microchip Technology | 36 | 58.1 | 51.6 | 300 | -55 ~ 150 | Active | No |
| TPSMD36A | Littelfuse Inc. | 36 | 58.1 | 51.6 | 3000 | -65 ~ 150 | Active | Yes |
| 5.0SMDJ36A | Taiwan Semiconductor Corporation | 36 | 58.1 | 86.1 | 5000 | -55 ~ 175 | Active | No |
Engineering Selection Recommendations
Direct Replacement (Identical Electrical & Compliance Profile):
3KASMC36AHM3_B/I is the primary direct replacement. Manufactured by Vishay, it maintains identical electrical specifications, operating temperature range (-65°C ~ 185°C), and AEC-Q101 automotive qualification. Product status is active with 978 units in stock.
TPSMD36A (Littelfuse Inc.) provides an alternative with active status and AEC-Q101 qualification. Operating temperature is limited to -65°C ~ 150°C. This part is suitable for applications where the full -65°C ~ 185°C range is not required.
Functional Equivalents (Identical Electrical Specifications, Active Status):
SMDJ36A-HR, SMDJ36A-HRA, and SMDJ36A-HRAT7 (all Littelfuse Inc.) deliver identical electrical performance with operating temperature range of -65°C ~ 150°C. These parts lack AEC-Q101 qualification but are suitable for general-purpose applications within the specified temperature envelope.
SMLJ36A-TP (Micro Commercial Co) provides identical electrical specifications with operating temperature range of -55°C ~ 175°C. This part is appropriate for applications not requiring the full -65°C lower temperature limit.
3SMC36A TR13 PBFREE (Central Semiconductor Corp) maintains electrical equivalence with operating temperature range of -65°C ~ 150°C and active product status.
SMDJ36A (EVVO Semi) offers identical electrical specifications with active status and high inventory availability (35,100 units).
Enhanced Performance Option:
5.0SMDJ36A (Taiwan Semiconductor Corporation) provides superior current handling (86.1A vs. 51.6A) and power dissipation (5000W vs. 3000W) while maintaining the same voltage specifications. This part is suitable for applications requiring higher transient current capacity.
Not Recommended for Direct Substitution:
SMLJ36AE3/TR13 (Microchip Technology) exhibits a significant deviation in peak pulse power rating (300W vs. 3000W), making it unsuitable for applications requiring the full 3000W power dissipation capability of the original part.
Frequently Asked Questions (FAQ)
Q: Can I use SMLJ36AE3/TR13 as a direct replacement for 3KASMC36AHM3_A/I?
A: No. While SMLJ36AE3/TR13 matches the voltage and current specifications, its peak pulse power rating is 300W compared to the required 3000W. This part is not suitable for applications requiring full power dissipation capability.
Q: What is the difference between 3KASMC36AHM3_A/I and 3KASMC36AHM3_B/I?
A: Both parts are manufactured by Vishay with identical electrical specifications and operating temperature range. The primary difference is product status: 3KASMC36AHM3_A/I is obsolete, while 3KASMC36AHM3_B/I is active. The suffix designation (_A/I vs. _B/I) indicates different manufacturing batches or revisions.
Q: Are all substitute parts in the DO-214AB (SMC) package?
A: Yes. All listed substitute parts use the DO-214AB (SMC) surface mount package, ensuring mechanical and footprint compatibility with the original design.
Q: Which substitute part has the best availability?
A: SMDJ36A (EVVO Semi) has the highest inventory with 35,100 units in stock. TPSMD36A (Littelfuse Inc.) offers 5,180 units with AEC-Q101 qualification.
Q: Can I use 5.0SMDJ36A in place of 3KASMC36AHM3_A/I?
A: Yes, 5.0SMDJ36A is functionally compatible and provides enhanced performance with higher current handling (86.1A) and power dissipation (5000W). It maintains the same voltage specifications and package format. This substitution is appropriate when higher transient current capacity is beneficial or required.
Q: What is the operating temperature limitation I should consider?
A: The original part operates from -65°C to 185°C. Most substitute parts are limited to -65°C ~ 150°C or -55°C ~ 175°C. Verify your application's temperature requirements before selection. If operation above 150°C is required, 3KASMC36AHM3_B/I or SMLJ36A-TP are appropriate choices.
Q: Do all substitute parts meet automotive qualification standards?
A: Only 3KASMC36AHM3_B/I and TPSMD36A carry AEC-Q101 qualification. Other substitutes are suitable for general-purpose applications. For automotive applications requiring AEC-Q101 certification, select from these two options.
Q: Are all parts RoHS3 compliant?
A: Yes. All listed parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with modern manufacturing and environmental requirements.
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