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SMBJ12CA-M3/52 Equivalent & Substitute Parts
Part Overview
The SMBJ12CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 12V reverse standoff voltage class and is designed for general-purpose transient protection applications. The part is Active status and RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and packaging specifications to ensure functional interchangeability in circuit protection applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 12V |
| Voltage - Breakdown (Min) | 13.3V |
| Voltage - Clamping (Max) @ Ipp | 19.9V |
| Current - Peak Pulse (10/1000µs) | 30.2A |
| Power - Peak Pulse | 600W |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Type | Zener |
| Bidirectional Channels | 1 |
| RoHS Status | RoHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the SMBJ12CA-M3/52 is determined by the following critical parameters:
Electrical Equivalence Requirements:
- Voltage - Reverse Standoff (Typ): 12V
- Voltage - Breakdown (Min): 13.3V minimum
- Voltage - Clamping (Max) @ Ipp: 19.9V maximum
- Current - Peak Pulse (10/1000µs): 30.2A minimum
- Power - Peak Pulse: 600W minimum
- Type: Zener, Bidirectional
Mechanical & Package Requirements:
- Package / Case: DO-214AA or SMB equivalent
- Mounting Type: Surface Mount
- Bidirectional Channels: 1
Compliance Requirements:
- RoHS3 Compliant
- MSL Rating: 1 (Unlimited)
Substitute parts must satisfy all electrical parameters within specified tolerances and maintain identical mechanical compatibility. Packaging variants (Tape & Reel, Cut Tape, Digi-Reel) are interchangeable for the same base component.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Breakdown (Min) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temperature | Package / Case | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SMBJ12CA-M3/52 | Vishay General Semiconductor - Diodes Division | 12V | 13.3V | 19.9V | 30.2A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ12CA-E3/5B | Vishay General Semiconductor - Diodes Division | 12V | 13.3V | 19.9V | 30.2A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ12CD-M3/H | Vishay General Semiconductor - Diodes Division | 12V | 13.5V | 19.6V | 30.6A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ12CA-E3/52 | Vishay General Semiconductor - Diodes Division | 12V | 13.3V | 19.9V | 30.2A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| 1SMB12CA TR13 PBFREE | Central Semiconductor Corp | 12V | 13.3V | 19.9V | 30.2A | 600W | -65°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ12CA | EVVO Semi | 12V | 13.3V | 19.9V | 30.2A | 600W | -65°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ12CA-13-F | Diodes Incorporated | 12V | 13.3V | 19.9V | 30.2A | 600W | -55°C ~ 150°C | DO-214AA, SMB | RoHS3 Compliant |
| SMBJ12CA-TP | Micro Commercial Co | 12V | 13.3V | 19.9V | 30.2A | 600W | -55°C ~ 175°C | DO-214AA, SMB | RoHS3 Compliant |
Engineering Selection Recommendations
Direct Equivalents (Identical Electrical & Thermal Specifications):
SMBJ12CA-E3/5B and SMBJ12CA-E3/52 from Vishay are direct equivalents to SMBJ12CA-M3/52, differing only in packaging format (Tape & Reel vs. Cut Tape & Digi-Reel). Both maintain identical electrical performance and operating temperature range. Selection between these variants depends on procurement and assembly requirements.
SMBJ12CA-13-F from Diodes Incorporated and SMBJ12CA-TP from Micro Commercial Co are functionally equivalent with identical electrical specifications. SMBJ12CA-TP offers extended upper operating temperature to 175°C, providing additional thermal margin in high-temperature environments.
Functionally Compatible Alternatives:
SMBJ12CD-M3/H from Vishay operates within acceptable tolerance bands with slightly higher breakdown voltage (13.5V vs. 13.3V) and lower clamping voltage (19.6V vs. 19.9V), with marginally higher peak pulse current (30.6A vs. 30.2A). This part maintains full electrical compatibility for general-purpose transient protection.
1SMB12CA TR13 PBFREE from Central Semiconductor Corp and SMBJ12CA from EVVO Semi both provide extended lower operating temperature to -65°C, suitable for applications requiring enhanced cold-temperature performance.
Compliance Status:
All listed substitute parts maintain RoHS3 compliance and MSL Rating 1 (Unlimited), ensuring compatibility with modern manufacturing and environmental standards.
Frequently Asked Questions (FAQ)
Q: Can SMBJ12CA-E3/52 replace SMBJ12CA-M3/52 directly?
A: Yes. Both parts are manufactured by Vishay with identical electrical specifications (12V standoff, 19.9V clamping, 30.2A peak pulse). The difference is packaging format: SMBJ12CA-E3/52 is supplied in Cut Tape & Digi-Reel format while SMBJ12CA-M3/52 is Tape & Reel. Electrical performance and PCB footprint are identical.
Q: What is the difference between SMBJ12CA-TP and SMBJ12CA-M3/52?
A: Both parts have identical electrical characteristics and DO-214AA SMB package. The primary difference is operating temperature range: SMBJ12CA-TP extends to 175°C junction temperature versus 150°C for SMBJ12CA-M3/52. SMBJ12CA-TP is suitable for applications requiring higher thermal headroom.
Q: Is SMBJ12CD-M3/H a suitable substitute?
A: SMBJ12CD-M3/H is functionally compatible. It maintains the 12V reverse standoff voltage and 600W peak pulse power. Electrical parameters fall within acceptable tolerance: breakdown voltage is 13.5V (vs. 13.3V), clamping voltage is 19.6V (vs. 19.9V), and peak pulse current is 30.6A (vs. 30.2A). Selection depends on circuit-specific clamping voltage requirements.
Q: Can I use parts from different manufacturers interchangeably?
A: Yes, provided electrical specifications match. SMBJ12CA from EVVO Semi, SMBJ12CA-13-F from Diodes Incorporated, and 1SMB12CA TR13 PBFREE from Central Semiconductor Corp all meet the electrical requirements of SMBJ12CA-M3/52. All are RoHS3 compliant with MSL Rating 1.
Q: Does packaging format affect electrical performance?
A: No. Tape & Reel (TR), Cut Tape (CT), and Digi-Reel packaging formats do not affect electrical characteristics or PCB performance. Selection is based on assembly line requirements and procurement logistics.
Q: What is the significance of the temperature range difference?
A: Operating temperature range defines the junction temperature limits. SMBJ12CA-M3/52 operates -55°C to 150°C. Extended-range variants like 1SMB12CA TR13 PBFREE (-65°C to 150°C) or SMBJ12CA-TP (-55°C to 175°C) provide additional margin for extreme thermal environments. Standard range is sufficient for most general-purpose applications.
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