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SMBJ12AE3/TR13
Part Overview
The SMBJ12AE3/TR13 is a Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This unidirectional Zener-type TVS diode operates with a 12V reverse standoff voltage and provides clamping at 19.9V with peak pulse current capability of 30.2A. The component is Active status and ROHS3 compliant with unlimited moisture sensitivity classification. Substitute components are identified to address supply chain flexibility, packaging preferences, and manufacturer alternatives while maintaining equivalent electrical performance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SMBJ12AE3/TR13 |
| Manufacturer | Microchip Technology |
| Category | Transient Voltage Suppressors (TVS) |
| 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 |
| Operating Temperature | -65°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | DO-214AA, SMB |
| Type | Zener |
| Unidirectional Channels | 1 |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Equivalent and substitute components for the SMBJ12AE3/TR13 are qualified based on the following electrical and mechanical parameters:
Critical Matching Parameters:
- Voltage - Reverse Standoff (Typ): 12V
- Voltage - Breakdown (Min): 13.3V
- Voltage - Clamping (Max) @ Ipp: 19.9V (or 19V within tolerance)
- Current - Peak Pulse (10/1000µs): 30.2A (or 25A minimum acceptable)
- Power - Peak Pulse: 600W (or 500W minimum acceptable)
- Mounting Type: Surface Mount
- Package / Case: DO-214AA or compatible SMB/SMA variants
- Type: Zener (unidirectional)
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Acceptable Variations:
- Manufacturer: Alternative qualified manufacturers (EVVO Semi, Diodes Incorporated, Vishay, Micro Commercial Co, Panjit International Inc., Littelfuse Inc.)
- Packaging Format: Tape & Reel (TR), Cut Tape (CT), or Digi-Reel® are functionally equivalent
- Operating Temperature Range: Extended ranges (-55°C to -65°C minimum; up to 150°C to 175°C maximum) are acceptable
- Clamping Voltage Tolerance: 19V to 19.9V range accepted
- Peak Pulse Current: 25A to 30.2A range accepted
All substitute parts are Active status with ROHS3 compliance and REACH Unaffected classification.
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 | Package / Case | Operating Temperature | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SMBJ12AE3/TR13 | Microchip Technology | 12V | 13.3V | 19.9V | 30.2A | 600W | DO-214AA, SMB | -65°C ~ 150°C (TJ) | ROHS3 Compliant |
| SMBJ12A | EVVO Semi | 12V | 13.3V | 19.9V | 30.2A | 600W | DO-214AC, SMA | -65°C ~ 150°C (TJ) | ROHS3 Compliant |
| SMBJ12A-13-F | Diodes Incorporated | 12V | 13.3V | 19.9V | 30.2A | 600W | DO-214AA, SMB | -55°C ~ 150°C (TJ) | ROHS3 Compliant |
| SMBJ12A-E3/5B | Vishay General Semiconductor - Diodes Division | 12V | 13.3V | 19.9V | 30.2A | 600W | DO-214AA, SMB | -55°C ~ 150°C (TJ) | ROHS3 Compliant |
| SMBJ12A-M3/5B | Vishay General Semiconductor - Diodes Division | 12V | 13.3V | 19.9V | 30.2A | 600W | DO-214AA, SMB | -55°C ~ 150°C (TJ) | ROHS3 Compliant |
| SMBJ12A-TP | Micro Commercial Co | 12V | 13.3V | 19.9V | 30.2A | 600W | DO-214AA, SMB | -55°C ~ 175°C (TJ) | ROHS3 Compliant |
| P6SMBJ12AS_R1_00001 | Panjit International Inc. | 12V | 13.3V | 19.9V | 30.2A | 600W | DO-214AA, SMB | -55°C ~ 150°C (TJ) | ROHS3 Compliant |
| SACB12 | Littelfuse Inc. | 12V | 13.3V | 19V | 25A | 500W | DO-214AA, SMB | -55°C ~ 150°C (TJ) | ROHS3 Compliant |
Engineering Selection Recommendations
All identified substitute components are Active status, ROHS3 compliant, and REACH unaffected. Selection criteria are based on product availability, compliance status, and packaging format requirements:
Direct Electrical Equivalents (Full 30.2A / 600W): SMBJ12A (EVVO Semi), SMBJ12A-13-F (Diodes Incorporated), SMBJ12A-E3/5B (Vishay), SMBJ12A-M3/5B (Vishay), SMBJ12A-TP (Micro Commercial Co), and P6SMBJ12AS_R1_00001 (Panjit International Inc.) provide complete electrical and thermal equivalence with the main part. Package variants include DO-214AA (SMB) and DO-214AC (SMA) configurations, both suitable for standard surface-mount PCB assembly.
Reduced Current Rating Alternative: SACB12 (Littelfuse Inc.) operates at reduced peak pulse current (25A versus 30.2A) and power dissipation (500W versus 600W). This component is appropriate for applications where the design margin accommodates lower transient current handling.
Temperature Range Consideration: SMBJ12A-TP offers extended upper operating temperature limit to 175°C, suitable for high-temperature environment requirements. All other alternatives operate to 150°C maximum junction temperature.
Frequently Asked Questions (FAQ)
Q: Can SACB12 replace SMBJ12AE3/TR13 directly? A: SACB12 is electrically compatible with equivalent voltage specifications (12V reverse standoff, 13.3V breakdown minimum, 19V clamping maximum). However, it operates at 25A peak pulse current versus 30.2A for the main part, and 500W peak pulse power versus 600W. Use SACB12 only when the circuit design accommodates these reduced current and power ratings.
Q: What is the difference between SMB (DO-214AA) and SMA (DO-214AC) packages? A: Both are surface-mount TVS diode packages with identical electrical characteristics. SMB and SMA designations refer to physical package dimensions and PCB footprint geometry. SMBJ12A from EVVO Semi uses DO-214AC (SMA) package, while other variants use DO-214AA (SMB). PCB layout and assembly tooling must be compatible with the selected package type.
Q: Are Tape & Reel (TR) and Cut Tape (CT) formats functionally equivalent? A: Yes. Tape & Reel and Cut Tape with Digi-Reel® are packaging and delivery formats only. Electrical, thermal, and reliability characteristics are identical. Format selection depends on automated assembly line requirements and minimum order quantities.
Q: Which substitute offers the widest operating temperature range? A: SMBJ12A-TP (Micro Commercial Co) supports -55°C to 175°C junction temperature, providing the highest maximum temperature rating. The main part SMBJ12AE3/TR13 operates to -65°C minimum (lower bound) and 150°C maximum.
Q: Do all substitutes meet the same compliance standards as the original? A: Yes. All qualified substitutes are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification with matching HTSUS code 8541.10.0080. Moisture sensitivity is MSL 1 (unlimited) across all alternatives.
Q: What factors determine substitutability for TVS diode selection? A: Substitutability is determined by matching reverse standoff voltage (12V), breakdown voltage minimum (13.3V), clamping voltage (19V-19.9V range), peak pulse current (25A-30.2A acceptable range), and package type (DO-214AA SMB or DO-214AC SMA). All qualified alternatives maintain these electrical parameters within design tolerance.
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