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SMAJ7.5CA-13 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts
Part Overview
The SMAJ7.5CA-13 is a surface mount Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated in the DO-214AC (SMA) package. This component provides transient overvoltage protection with a 7.5V reverse standoff voltage and 12.9V maximum clamping voltage at peak pulse current. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active inventory sources.
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) | 31A |
| Power - Peak Pulse | 400W |
| Type | Zener |
| Bidirectional Channels | 1 |
| Package / Case | DO-214AC, SMA |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
Substitute Part Grouping Explanation
Substitution of the SMAJ7.5CA-13 is determined by strict equivalence across the following electrical and mechanical parameters:
- Voltage - Reverse Standoff: 7.5V
- Voltage - Clamping (Max) @ Ipp: 12.9V
- Current - Peak Pulse (10/1000µs): 31A
- Power - Peak Pulse: 400W
- Package / Case: DO-214AC, SMA
- Type: Zener, Bidirectional (1 channel)
All identified substitute parts maintain identical electrical specifications and package configuration, ensuring direct functional compatibility in circuit applications.
Parameter Comparison
| Parameter | SMAJ7.5CA-13 (Diodes Inc.) | SMAJ7.5CA-13-F (Diodes Inc.) | SMAJ7.5CA (MDD) | SMAJ7.5CA-TP (Micro Commercial Co) |
|---|---|---|---|---|
| Voltage - Reverse Standoff (Typ) | 7.5V | 7.5V | 7.5V | 7.5V |
| Voltage - Breakdown (Min) | 8.33V | 8.33V | 8.33V | 8.33V |
| Voltage - Clamping (Max) @ Ipp | 12.9V | 12.9V | 12.9V | 12.9V |
| Current - Peak Pulse (10/1000µs) | 31A | 31A | 31A | 31A |
| Power - Peak Pulse | 400W | 400W | 400W | 400W |
| Type | Zener | Zener | Zener | Zener |
| Bidirectional Channels | 1 | 1 | 1 | 1 |
| Package / Case | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Discontinued | Active | Active | Active |
| RoHS Status | Non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Inventory Status | 968 Pcs | 5300 Pcs | 65200 Pcs | 1660 Pcs |
Engineering Selection Recommendations
All substitute parts maintain identical electrical and mechanical specifications to the SMAJ7.5CA-13. Selection among active alternatives should be based on the following factors:
SMAJ7.5CA-13-F (Diodes Incorporated): Active product status with ROHS3 compliance and Tape & Reel packaging. Highest inventory availability at 5300 units. Maintains original manufacturer continuity.
SMAJ7.5CA (MDD): Active product status with ROHS3 compliance. Largest inventory availability at 65200 units. Manufacturer alternative with equivalent specifications.
SMAJ7.5CA-TP (Micro Commercial Co): Active product status with ROHS3 compliance and Tape & Reel packaging. Extended operating temperature range to 175°C (TA). Suitable for applications requiring higher temperature performance.
The original SMAJ7.5CA-13 is RoHS non-compliant and discontinued. All substitute options provide RoHS3 compliance, meeting current regulatory requirements.
Frequently Asked Questions (FAQ)
Q: Can SMAJ7.5CA-13-F be used as a direct replacement for SMAJ7.5CA-13?
A: Yes. Both parts share identical electrical specifications (7.5V standoff, 12.9V clamping, 31A peak pulse current, 400W peak power) and the same DO-214AC (SMA) package configuration. The primary difference is product status (active vs. discontinued) and packaging format (Tape & Reel vs. bulk).
Q: What is the difference between SMAJ7.5CA and SMAJ7.5CA-13?
A: Both parts are electrically equivalent with identical voltage and current ratings. The designation difference reflects manufacturer part numbering conventions. SMAJ7.5CA is the base part number; SMAJ7.5CA-13 includes a specific suffix designation.
Q: Is the SMAJ7.5CA-TP suitable for high-temperature applications?
A: The SMAJ7.5CA-TP operates across -55°C to 175°C (TA), compared to -55°C to 150°C (TJ) for the original SMAJ7.5CA-13. This extended range accommodates higher ambient temperature environments while maintaining equivalent electrical performance.
Q: Are all substitute parts RoHS compliant?
A: Yes. SMAJ7.5CA-13-F, SMAJ7.5CA, and SMAJ7.5CA-TP are all ROHS3 compliant. The original SMAJ7.5CA-13 is RoHS non-compliant. All alternatives meet current regulatory compliance requirements.
Q: Does packaging format affect electrical performance?
A: No. Tape & Reel (TR) packaging and bulk packaging contain identical components. Packaging format affects handling, storage, and assembly processes only. Electrical specifications remain unchanged.
Q: Which substitute offers the best inventory availability?
A: SMAJ7.5CA (MDD) provides the largest inventory at 65200 units, followed by SMAJ7.5CA-13-F at 5300 units and SMAJ7.5CA-TP at 1660 units.
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