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TPSMD24CA Equivalent & Substitute Parts
Part Overview
The TPSMD24CA is a 24V bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for surface mount applications in the DO-214AB (SMC) package. This component provides transient overvoltage protection with a 38.9V maximum clamping voltage and 77.1A peak pulse current capability at 3000W peak pulse power. The part is active in production, AEC-Q101 qualified for automotive applications, and ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 24 | V |
| Voltage - Breakdown (Min) | 26.7 | V |
| Voltage - Clamping (Max) @ Ipp | 38.9 | V |
| Current - Peak Pulse (10/1000µs) | 77.1 | A |
| Power - Peak Pulse | 3000 | W |
| Operating Temperature Range | -65 to 150 | °C |
| Package / Case | DO-214AB, SMC | — |
| Mounting Type | Surface Mount | — |
| Type | Zener | — |
| Bidirectional Channels | 1 | — |
| Grade | Automotive | — |
| Qualification | AEC-Q101 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the TPSMD24CA are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:
- Voltage - Reverse Standoff (Typ): 24V
- Voltage - Breakdown (Min): 26.7V
- Voltage - Clamping (Max) @ Ipp: 38.9V
- Package / Case: DO-214AB, SMC
- Mounting Type: Surface Mount
- Type: Zener
- Bidirectional Channels: 1
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
Substitute parts are divided into two categories:
Category A: Direct Electrical Equivalents (3000W Peak Pulse Power) Parts with identical voltage specifications, clamping voltage, and 3000W peak pulse power rating. Current ratings range from 77A to 77.2A. These parts are fully interchangeable with the TPSMD24CA in applications where the 3000W power rating is specified.
Category B: Enhanced Performance Substitutes (5000W Peak Pulse Power) Parts with identical voltage specifications and clamping voltage but higher peak pulse power rating (5000W) and increased peak pulse current (129A). These parts provide additional margin and are suitable for applications requiring higher transient energy absorption.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) [V] | Voltage - Breakdown (Min) [V] | Voltage - Clamping (Max) @ Ipp [V] | Current - Peak Pulse (10/1000µs) [A] | Power - Peak Pulse [W] | Operating Temperature [°C] | Package / Case | AEC-Q101 | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| TPSMD24CA | Littelfuse Inc. | 24 | 26.7 | 38.9 | 77.1 | 3000 | -65 to 150 | DO-214AB, SMC | Yes | ROHS3 |
| 3.0SMCJ24CA-AU_R1_000A1 | Panjit International Inc. | 24 | 26.7 | 38.9 | 77.2 | 3000 | -55 to 150 | DO-214AB, SMC | Yes | ROHS3 |
| 3SMC24CA TR13 PBFREE | Central Semiconductor Corp | 24 | 26.7 | 38.9 | 77.2 | 3000 | -65 to 150 | DO-214AB, SMC | No | ROHS3 |
| 5.0SMDJ24CA | MDE Semiconductor Inc | 24 | 26.7 | 38.9 | 129 | 5000 | -55 to 150 | DO-214AB, SMC | No | ROHS3 |
| 5.0SMLJ24CA-TP | Micro Commercial Co | 24 | 26.7 | 38.9 | 129 | 5000 | -55 to 175 | DO-214AB, SMC | No | ROHS3 |
| ATV30C240JB-HF | Comchip Technology | 24 | 26.7 | 38.9 | 77.12 | 3000 | -55 to 150 | DO-214AB, SMC | Yes | ROHS3 |
| SM30T28CAY | STMicroelectronics | 24 | 26.7 | 38.9 | 77.1 | 3000 | -55 to 175 | DO-214AB, SMC | Yes | ROHS3 |
| SMC30J24CA | STMicroelectronics | 24 | 26.7 | 38.9 | 77 | 3000 | -55 to 175 | DO-214AB, SMC | No | ROHS3 |
| SMC3K24CA-M3/57 | Vishay General Semiconductor - Diodes Division | 24 | 26.7 | 38.9 | 77.1 | 3000 | -55 to 150 | DO-214AB, SMC | No | ROHS3 |
| SMC3K24CAHM3/57 | Vishay General Semiconductor - Diodes Division | 24 | 26.7 | 38.9 | 77.1 | 3000 | -55 to 150 | DO-214AB, SMC | Yes | ROHS3 |
| SMCJ24CA | MDD | 24 | 26.7 | 38.9 | 38.6 | 1500 | -50 to 150 | DO-214AB, SMC | No | ROHS3 |
Engineering Selection Recommendations
For Automotive Applications with AEC-Q101 Requirement: Select from parts with confirmed AEC-Q101 qualification: TPSMD24CA (Littelfuse), 3.0SMCJ24CA-AU_R1_000A1 (Panjit), ATV30C240JB-HF (Comchip), SM30T28CAY (STMicroelectronics), or SMC3K24CAHM3/57 (Vishay). These parts meet automotive qualification standards and are suitable for safety-critical applications.
For General Purpose Applications: All listed parts are suitable for general purpose transient voltage suppression. Selection may be based on availability, lead time, and cost considerations while maintaining electrical parameter compatibility.
For Extended Temperature Range Applications: Parts rated to -55°C to 175°C (5.0SMLJ24CA-TP, SM30T28CAY, SMC30J24CA) provide extended upper temperature capability compared to the TPSMD24CA (-65°C to 150°C).
For Higher Energy Absorption: Parts with 5000W peak pulse power (5.0SMDJ24CA, 5.0SMLJ24CA-TP) provide double the energy absorption capability compared to 3000W rated parts. These are suitable for applications with higher transient energy requirements.
For Lower Power Applications: SMCJ24CA (MDD) with 1500W peak pulse power and 38.6A peak pulse current is suitable for applications with reduced transient energy requirements, though it provides lower margin than the primary part.
Frequently Asked Questions (FAQ)
Q: Can SMCJ24CA be used as a direct substitute for TPSMD24CA? A: SMCJ24CA has identical voltage specifications and package but differs in peak pulse power (1500W vs. 3000W) and peak pulse current (38.6A vs. 77.1A). It is suitable only for applications with lower transient energy requirements.
Q: What is the difference between 3000W and 5000W rated parts? A: The 5000W rated parts (5.0SMDJ24CA, 5.0SMLJ24CA-TP) absorb twice the transient energy compared to 3000W rated parts. Selection depends on the application's transient energy profile. Both maintain identical voltage specifications and clamping characteristics.
Q: Are all substitute parts ROHS3 compliant? A: Yes, all listed substitute parts are ROHS3 compliant, matching the TPSMD24CA compliance status.
Q: Does operating temperature range affect substitution? A: Operating temperature range varies among substitutes. The TPSMD24CA operates from -65°C to 150°C. Some substitutes have narrower ranges (-55°C minimum) or extended ranges (up to 175°C). Selection should match the application's thermal requirements.
Q: Are all substitute parts in the same package? A: Yes, all substitute parts use the DO-214AB (SMC) surface mount package, ensuring mechanical and footprint compatibility with the TPSMD24CA.
Q: What is the significance of AEC-Q101 qualification? A: AEC-Q101 qualification indicates the part meets automotive industry reliability and quality standards. For automotive applications, select from AEC-Q101 qualified parts: TPSMD24CA, 3.0SMCJ24CA-AU_R1_000A1, ATV30C240JB-HF, SM30T28CAY, or SMC3K24CAHM3/57.
Q: Can parts with different peak pulse current ratings be interchanged? A: Parts with different peak pulse current ratings (77A, 77.1A, 77.2A, 129A) maintain identical voltage specifications and clamping voltage. Selection depends on the application's transient current profile. Higher current ratings provide additional margin but do not change the voltage protection characteristics.
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