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SMBJ20CA-M3/52 Equivalent & Substitute Parts
Part Overview
The SMBJ20CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and is designed for general-purpose transient voltage suppression applications. The part is Active status and RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics and package compatibility to support procurement flexibility and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 20V |
| Voltage - Breakdown (Min) | 22.2V |
| Voltage - Clamping (Max) @ Ipp | 32.4V |
| Current - Peak Pulse (10/1000µs) | 18.5A |
| Power - Peak Pulse | 600W |
| Package / Case | DO-214AA, SMB |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Type | Zener |
| Bidirectional Channels | 1 |
| RoHS Status | RoHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the SMBJ20CA-M3/52 are qualified based on the following electrical and mechanical parameters:
- Voltage - Reverse Standoff (Typ): 20V
- Voltage - Breakdown (Min): 22.2V to 22.5V
- Voltage - Clamping (Max) @ Ipp: 32V to 32.4V
- Current - Peak Pulse (10/1000µs): 18.5A to 18.8A
- Power - Peak Pulse: 600W
- Package / Case: DO-214AA or SMB
- Mounting Type: Surface Mount
- Type: Zener, Bidirectional
- RoHS Status: RoHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
Parts meeting these criteria are electrically and mechanically interchangeable with the SMBJ20CA-M3/52 in general-purpose transient voltage suppression applications.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Breakdown (Min) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temperature Range | Package / Case | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SMBJ20CA-M3/52 | Vishay General Semiconductor - Diodes Division | 20V | 22.2V | 32.4V | 18.5A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ20CD-M3/H | Vishay General Semiconductor - Diodes Division | 20V | 22.5V | 32V | 18.8A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ20CA-E3/52 | Vishay General Semiconductor - Diodes Division | 20V | 22.2V | 32.4V | 18.5A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| 1SMB20CA TR13 PBFREE | Central Semiconductor Corp | 20V | 22.2V | 32.4V | 18.5A | 600W | -65°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ20CA-13-F | Diodes Incorporated | 20V | 22.2V | 32.4V | 18.5A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ20CA-TP | Micro Commercial Co | 20V | 22.2V | 32.4V | 18.5A | 600W | -55°C ~ 175°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ20CA | Fairchild Semiconductor | 20V | 22.2V | 32.4V | 18.6A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
Engineering Selection Recommendations
All substitute parts listed are Active status and RoHS3 compliant, meeting current regulatory requirements. Selection among equivalent parts should be based on:
- Manufacturer availability and supply chain requirements
- Operating temperature range requirements (note that 1SMB20CA TR13 PBFREE supports -65°C minimum and SMBJ20CA-TP supports +175°C maximum)
- Specific packaging designation requirements (DO-214AA versus SMB designation)
- Current peak pulse tolerance (18.5A to 18.8A range)
- Voltage clamping tolerance (32V to 32.4V range)
All parts maintain identical reverse standoff voltage (20V) and power dissipation (600W), ensuring functional equivalence in general-purpose transient voltage suppression applications.
Frequently Asked Questions (FAQ)
Q: Can SMBJ20CD-M3/H replace SMBJ20CA-M3/52?
A: Yes. Both parts share identical reverse standoff voltage (20V), power dissipation (600W), and package (DO-214AA, SMB). Voltage breakdown and clamping parameters fall within acceptable tolerance ranges (22.5V vs 22.2V breakdown; 32V vs 32.4V clamping). Peak pulse current differs slightly (18.8A vs 18.5A), remaining within the same performance class.
Q: What is the difference between SMBJ20CA-E3/52 and SMBJ20CA-M3/52?
A: Both parts are manufactured by Vishay General Semiconductor - Diodes Division with identical electrical specifications. The difference lies in packaging designation and tape configuration. Both are electrically equivalent for general-purpose TVS applications.
Q: Can I use 1SMB20CA TR13 PBFREE in applications requiring -55°C operation?
A: Yes. The 1SMB20CA TR13 PBFREE supports -65°C to 150°C operating range, which exceeds the -55°C to 150°C requirement of SMBJ20CA-M3/52. This part is suitable for applications requiring extended low-temperature performance.
Q: Are all substitute parts in the same DO-214AA package?
A: All substitute parts use DO-214AA or SMB package designation, which are mechanically and electrically equivalent surface mount packages for this component category. Verify specific PCB footprint requirements with component datasheets.
Q: Do all substitute parts meet RoHS3 compliance?
A: Yes. All listed substitute parts are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of SMBJ20CA-M3/52.
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