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SMCJ7.5CA-M3/9AT Equivalent & Substitute Parts
Part Overview
The SMCJ7.5CA-M3/9AT is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AB (SMC) package and provides transient overvoltage protection for general-purpose applications. The part is Active status and RoHS3 compliant, making it suitable for modern electronic circuit protection requirements. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the TVS diode category.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 7.5V |
| Voltage - Breakdown (Min) | 8.33V |
| Voltage - Clamping (Max) @ Ipp | 12.9V |
| Current - Peak Pulse (10/1000µs) | 116.3A |
| Power - Peak Pulse | 1500W |
| Type | Zener |
| Bidirectional Channels | 1 |
| Mounting Type | Surface Mount |
| Package / Case | DO-214AB, SMC |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the SMCJ7.5CA-M3/9AT are qualified based on the following critical parameters that determine functional equivalence:
- Voltage - Reverse Standoff (Typ): 7.5V
- Voltage - Clamping (Max) @ Ipp: 12.9V
- Package / Case: DO-214AB, SMC
- Mounting Type: Surface Mount
- Operating Temperature Range: -55°C ~ 150°C (TJ)
- Type: Zener, Bidirectional
- RoHS3 Compliance
All identified substitute parts maintain these core electrical and mechanical specifications. Variations in Current - Peak Pulse (within the range of 116.3A to 122A) and manufacturer sourcing do not affect functional substitution for general-purpose transient voltage suppression applications.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Package / Case | Operating Temperature | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| SMCJ7.5CA-M3/9AT | Vishay General Semiconductor - Diodes Division | 7.5V | 12.9V | 116.3A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | ROHS3 Compliant |
| SMCJ7.5CA-E3/57T | Vishay General Semiconductor - Diodes Division | 7.5V | 12.9V | 116.3A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | ROHS3 Compliant |
| SMCJ7.5CA | Taiwan Semiconductor Corporation | 7.5V | 12.9V | 122A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | ROHS3 Compliant |
| SMCJ7.5CA-13-F | Diodes Incorporated | 7.5V | 12.9V | 116.3A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | ROHS3 Compliant |
Engineering Selection Recommendations
All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with modern manufacturing standards. The SMCJ7.5CA-M3/9AT from Vishay and SMCJ7.5CA-E3/57T from Vishay are direct equivalents with identical electrical specifications and packaging. The SMCJ7.5CA from Taiwan Semiconductor Corporation provides equivalent protection with a marginally higher peak pulse current rating (122A versus 116.3A), maintaining full compatibility within the specified voltage and power parameters. The SMCJ7.5CA-13-F from Diodes Incorporated matches the original part's electrical performance and package specifications. Selection among these substitutes depends on availability, supply chain requirements, and manufacturer preference within your procurement framework.
Frequently Asked Questions (FAQ)
Q: Can SMCJ7.5CA-E3/57T be used as a direct replacement for SMCJ7.5CA-M3/9AT?
A: Yes. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications: 7.5V reverse standoff voltage, 12.9V clamping voltage, 116.3A peak pulse current, and 1500W peak pulse power. Both use DO-214AB (SMC) surface mount packaging and operate across -55°C to 150°C. The difference in part number suffix reflects packaging tape configuration only.
Q: What is the difference between the Vishay and Taiwan Semiconductor Corporation versions?
A: The Taiwan Semiconductor Corporation SMCJ7.5CA maintains all critical voltage and power specifications identical to the Vishay parts. The peak pulse current is rated at 122A compared to 116.3A in the Vishay version. This higher current rating does not affect substitution compatibility and provides equivalent or superior transient suppression performance.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 Compliant certification, meeting current environmental and regulatory requirements for electronic component manufacturing.
Q: Can the SMCJ7.5CA-13-F from Diodes Incorporated be used interchangeably?
A: Yes. The SMCJ7.5CA-13-F maintains the same voltage ratings (7.5V reverse standoff, 12.9V clamping), peak pulse current (116.3A), power rating (1500W), and DO-214AB (SMC) package configuration. It is functionally equivalent for general-purpose transient voltage suppression applications.
Q: Does the difference in peak pulse current (116.3A vs. 122A) affect circuit performance?
A: No. Both current ratings exceed the transient suppression requirements for the specified voltage class. The higher rating in the Taiwan Semiconductor version provides additional margin without affecting compatibility or circuit behavior.
Q: What is the Moisture Sensitivity Level (MSL) for all substitute parts?
A: All parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.
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