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SMAJ9.0CA-13 Transient Voltage Suppressor (TVS) Diode Equivalent & Substitute Parts
Part Overview
The SMAJ9.0CA-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 for general-purpose applications with a 9V reverse standoff voltage and 15.4V maximum clamping voltage. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SMAJ9.0CA-13 |
| Manufacturer | Diodes Incorporated |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Package / Case | DO-214AC, SMA |
| Voltage - Reverse Standoff (Typ) | 9V |
| Voltage - Breakdown (Min) | 10V |
| Voltage - Clamping (Max) @ Ipp | 15.4V |
| Current - Peak Pulse (10/1000µs) | 26A |
| Power - Peak Pulse | 400W |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the SMAJ9.0CA-13 is determined by strict equivalence across the following critical parameters:
- Voltage - Reverse Standoff: 9V
- Voltage - Breakdown (Min): 10V
- Voltage - Clamping (Max) @ Ipp: 15.4V
- Current - Peak Pulse (10/1000µs): 26A
- Power - Peak Pulse: 400W
- Package / Case: DO-214AC, SMA
- Type: Zener
- Bidirectional Channels: 1
All identified substitute parts maintain identical electrical performance specifications and physical package compatibility. Differences exist only in manufacturer identity, product status, packaging format (bulk vs. tape & reel), and compliance certifications.
Parameter Comparison
| Parameter | SMAJ9.0CA-13 (Diodes) | SMAJ9.0CA-13-F (Diodes) | SMAJ9.0CA (MDD) | SMAJ9.0CA-E3/61 (Vishay) |
|---|---|---|---|---|
| Voltage - Reverse Standoff (Typ) | 9V | 9V | 9V | 9V |
| Voltage - Breakdown (Min) | 10V | 10V | 10V | 10V |
| Voltage - Clamping (Max) @ Ipp | 15.4V | 15.4V | 15.4V | 15.4V |
| Current - Peak Pulse (10/1000µs) | 26A | 26A | 26A | 26A |
| Power - Peak Pulse | 400W | 400W | 400W | 400W |
| Operating Temperature | -55°C ~ 150°C | -55°C ~ 150°C | -50°C ~ 150°C | -55°C ~ 150°C |
| Package / Case | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA |
| Product Status | Discontinued | Active | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Packaging Format | Bulk | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
SMAJ9.0CA-13-F (Diodes Incorporated) is the primary substitute. It maintains identical electrical specifications and physical package compatibility with the original part while offering active product status and ROHS3 compliance. The only difference is packaging format (tape & reel vs. bulk), which does not affect electrical performance or board-level compatibility.
SMAJ9.0CA (MDD) provides an alternative from a different manufacturer with active status and ROHS3 compliance. The operating temperature range is slightly narrower (-50°C to 150°C vs. -55°C to 150°C), which may be relevant for applications requiring the full -55°C lower limit.
SMAJ9.0CA-E3/61 (Vishay General Semiconductor) is a TransZorb® series equivalent with active status and ROHS3 compliance. It maintains the full -55°C to 150°C operating temperature range and is available in tape & reel packaging.
For new designs or applications requiring regulatory compliance, any of the three active substitutes are suitable. For legacy systems requiring exact thermal range matching, SMAJ9.0CA-13-F or SMAJ9.0CA-E3/61 are preferred over SMAJ9.0CA.
Frequently Asked Questions (FAQ)
Q: Can SMAJ9.0CA-13-F be used as a direct replacement for SMAJ9.0CA-13?
A: Yes. Both parts are electrically identical with matching voltage ratings (9V standoff, 15.4V clamping), current ratings (26A peak pulse), and power dissipation (400W). Both use the DO-214AC (SMA) package. The only difference is packaging format (tape & reel vs. bulk), which does not affect circuit performance.
Q: What is the difference between the MDD and Vishay versions?
A: Both SMAJ9.0CA (MDD) and SMAJ9.0CA-E3/61 (Vishay) meet the same electrical specifications. The MDD version operates from -50°C to 150°C, while the Vishay version operates from -55°C to 150°C. Select based on your application's minimum operating temperature requirement.
Q: Are all substitutes RoHS compliant?
A: The original SMAJ9.0CA-13 is RoHS non-compliant. All three active substitutes (SMAJ9.0CA-13-F, SMAJ9.0CA, and SMAJ9.0CA-E3/61) are ROHS3 compliant, making them suitable for applications with RoHS requirements.
Q: Does packaging format (tape & reel vs. bulk) affect electrical performance?
A: No. Tape & reel and bulk packaging formats contain identical components. The difference is only in how parts are supplied and handled during assembly. Electrical specifications and board-level performance are unchanged.
Q: Can I mix different manufacturers in the same design?
A: Yes. All substitute parts meet identical electrical specifications and use the same DO-214AC (SMA) package. They are functionally interchangeable at the circuit level. Mixing manufacturers is acceptable from an engineering standpoint.
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