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SMBJ40CA-M3/52 Equivalent & Substitute Parts
Part Overview
The SMBJ40CA-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 to support procurement flexibility, packaging format variations, and alternative manufacturer sourcing while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 40V |
| Voltage - Breakdown (Min) | 44.4V |
| Voltage - Clamping (Max) @ Ipp | 64.5V |
| Current - Peak Pulse (10/1000µs) | 9.3A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -55°C to 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | DO-214AA, SMB |
| Bidirectional Channels | 1 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the SMBJ40CA-M3/52 is determined by strict electrical and mechanical parameter matching:
Primary Substitution Criteria:
- Voltage - Reverse Standoff (Typ): 40V
- Voltage - Clamping (Max) @ Ipp: 64.5V
- Current - Peak Pulse (10/1000µs): 9.3A
- Power - Peak Pulse: 600W
- Package / Case: DO-214AA, SMB
- Operating Temperature Range: -55°C to 150°C (TJ)
- Bidirectional Channels: 1
Substitute Categories:
Category 1: Identical Electrical Specifications, Packaging Format Variation Parts with identical voltage, current, and power ratings but different packaging formats (Tape & Reel, Cut Tape) from the same or equivalent manufacturers.
Category 2: Identical Electrical Specifications, Alternative Manufacturer Parts from different manufacturers with matching electrical parameters and DO-214AA/SMB package compatibility.
Category 3: Related Voltage Series, Same Package Parts within the SMBJ series with different reverse standoff voltages (43V, 45V, 48V) that maintain the same package format and general-purpose application profile. These are listed as manufacturer-recommended alternatives for applications requiring different voltage thresholds.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temperature | Package | Packaging Format |
|---|---|---|---|---|---|---|---|---|
| SMBJ40CA-M3/52 | Vishay | 40V | 64.5V | 9.3A | 600W | -55°C to 150°C | DO-214AA, SMB | Tape & Reel |
| SMBJ40CD-M3/H | Vishay | 40V | 63.6V | 9.43A | 600W | -55°C to 150°C | DO-214AA, SMB | Tape & Reel |
| SMBJ40CA-E3/52 | Vishay | 40V | 64.5V | 9.3A | 600W | -55°C to 150°C | DO-214AA, SMB | Cut Tape |
| ATV06B400JB-HF | Comchip Technology | 40V | 64.5V | 9.3A | 600W | -55°C to 150°C | DO-214AA, SMB | Tape & Reel |
| SMBJ40CA | MDD | 40V | 64.5V | 9.3A | 600W | -50°C to 150°C | DO-214AA, SMB | Bulk |
| SMBJ40CA-13-F | Diodes Incorporated | 40V | 64.5V | 9.3A | 600W | -55°C to 150°C | DO-214AA, SMB | Cut Tape & Digi-Reel |
| SMBJ43CA | MDD | 43V | 69.4V | 8.7A | 600W | -50°C to 150°C | DO-214AA, SMB | Bulk |
| SMBJ45CA | MDD | 45V | 72.7V | 8.3A | 600W | -50°C to 150°C | DO-214AA, SMB | Bulk |
| SMBJ48CA | MDD | 48V | 77.4V | 7.8A | 600W | -50°C to 150°C | DO-214AA, SMB | Bulk |
Engineering Selection Recommendations
Direct Substitutes (Identical Electrical Performance):
SMBJ40CD-M3/H, SMBJ40CA-E3/52, ATV06B400JB-HF, SMBJ40CA, and SMBJ40CA-13-F are direct electrical equivalents with 40V reverse standoff voltage and 64.5V clamping voltage. Selection among these parts is based on packaging format requirements and procurement availability. SMBJ40CA-E3/52 is manufacturer-recommended and maintains identical specifications with Cut Tape packaging. ATV06B400JB-HF is qualified to AEC-Q101 automotive standard and carries Comchip Technology manufacturing. SMBJ40CA-13-F is supplied by Diodes Incorporated with Cut Tape & Digi-Reel packaging options.
Related Voltage Series (Alternative Threshold Selection):
SMBJ43CA, SMBJ45CA, and SMBJ48CA are manufacturer-recommended alternatives within the SMBJ series. These parts maintain the same DO-214AA/SMB package and 600W peak pulse power rating but feature higher reverse standoff voltages (43V, 45V, 48V respectively) with correspondingly higher clamping voltages. Selection of these parts is appropriate only when circuit design requires a different transient voltage threshold than the 40V specification of the primary part.
Compliance and Status:
All listed parts are Active status and RoHS3 compliant. All parts carry MSL 1 (Unlimited) moisture sensitivity rating. Operating temperature range is -55°C to 150°C for Vishay and Diodes Incorporated parts; MDD parts specify -50°C to 150°C.
Frequently Asked Questions (FAQ)
Q: Can SMBJ40CD-M3/H replace SMBJ40CA-M3/52 directly?
A: SMBJ40CD-M3/H is electrically compatible with a clamping voltage of 63.6V versus 64.5V on the original part. Both maintain 40V reverse standoff voltage, 600W peak pulse power, and -55°C to 150°C operating temperature. The difference in clamping voltage (0.9V) falls within normal manufacturing tolerance ranges for TVS diodes. Both are Vishay TransZorb series in DO-214AA/SMB package with Tape & Reel packaging.
Q: What is the difference between SMBJ40CA-M3/52 and SMBJ40CA-E3/52?
A: These parts are electrically identical with matching 40V reverse standoff, 64.5V clamping voltage, and 9.3A peak pulse current. The difference is packaging format: SMBJ40CA-M3/52 is supplied in Tape & Reel format, while SMBJ40CA-E3/52 is supplied in Cut Tape format. Both are manufactured by Vishay and are manufacturer-recommended equivalents.
Q: Can I use SMBJ43CA, SMBJ45CA, or SMBJ48CA as substitutes?
A: These parts are not direct substitutes. They feature different reverse standoff voltages (43V, 45V, 48V) and higher clamping voltages (69.4V, 72.7V, 77.4V respectively). Use these parts only when circuit design specifically requires a higher voltage threshold. All maintain the same DO-214AA/SMB package and 600W peak pulse power rating.
Q: Is ATV06B400JB-HF suitable for automotive applications?
A: ATV06B400JB-HF is qualified to AEC-Q101 automotive standard and carries Comchip Technology manufacturing. It is electrically identical to SMBJ40CA-M3/52 with 40V reverse standoff and 64.5V clamping voltage. Use this part when automotive-grade qualification is required.
Q: What is the operating temperature difference between Vishay and MDD parts?
A: Vishay parts (SMBJ40CA-M3/52, SMBJ40CD-M3/H, SMBJ40CA-E3/52) and Diodes Incorporated parts (SMBJ40CA-13-F) specify -55°C to 150°C operating temperature. MDD parts (SMBJ40CA, SMBJ43CA, SMBJ45CA, SMBJ48CA) specify -50°C to 150°C. For applications requiring operation below -50°C, use Vishay or Diodes Incorporated parts.
Q: Are all parts RoHS3 compliant?
A: Yes. All listed parts carry RoHS3 compliance status and MSL 1 (Unlimited) moisture sensitivity rating.
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