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SMAJ54CE3/TR13 Equivalent & Substitute Parts
Part Overview
The SMAJ54CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount component operates in the 54V reverse standoff voltage range with a 96.3V maximum clamping voltage and 5.2A peak pulse current capability. The device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating.
Substitute parts are identified based on functional equivalence within the SMAJ54 series, maintaining compatibility with the DO-214AC (SMA) package and core electrical parameters necessary for transient voltage suppression applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 54 | V |
| Voltage - Breakdown (Min) | 60 | V |
| Voltage - Clamping (Max) @ Ipp | 96.3 | V |
| Current - Peak Pulse (10/1000µs) | 5.2 | A |
| Power - Peak Pulse | 500 | W |
| Package / Case | DO-214AC, SMA | — |
| Mounting Type | Surface Mount | — |
| Operating Temperature | -65 to 150 | °C |
| Type | Zener | — |
| Bidirectional Channels | 1 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitute parts for the SMAJ54CE3/TR13 are qualified based on the following criteria:
Electrical Parameter Alignment:
- Reverse standoff voltage of 54V (typical)
- Breakdown voltage minimum of 60V
- DO-214AC (SMA) package compatibility
- Zener diode type with single bidirectional channel
- General-purpose application classification
Acceptable Parameter Variations: Substitute parts maintain the same reverse standoff and breakdown voltage specifications. Clamping voltage and peak pulse current may vary within the SMAJ54 series specification range. Operating temperature ranges may differ between manufacturers while maintaining minimum -55°C lower bound and 150°C upper bound compatibility. Peak pulse power ratings of 400W or 500W are functionally equivalent for general-purpose transient suppression.
Compliance Requirements: All substitute parts maintain RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating (MSL 1), ensuring regulatory and environmental compatibility.
Parameter Comparison
| Parameter | SMAJ54CE3/TR13 (Microchip) | SMAJ54CA (Meritek) | SMAJ54CA-13-F (Diodes Inc.) | SMAJ54CA-E3/61 (Vishay) | SMAJ54CA-TP (MCC) |
|---|---|---|---|---|---|
| Manufacturer | Microchip Technology | Meritek | Diodes Incorporated | Vishay General Semiconductor | Micro Commercial Co |
| Voltage - Reverse Standoff (Typ) | 54V | 54V | 54V | 54V | 54V |
| Voltage - Breakdown (Min) | 60V | 60V | 60V | 60V | 60V |
| Voltage - Clamping (Max) @ Ipp | 96.3V | 87.1V | 87.1V | 87.1V | 87.1V |
| Current - Peak Pulse (10/1000µs) | 5.2A | 4.59A | 4.6A | 4.6A | 4.6A |
| Power - Peak Pulse | 500W | 400W | 400W | 400W | 400W |
| Package / Case | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA | DO-214AC, SMA |
| Operating Temperature Range | -65 to 150°C (TJ) | -55 to 150°C | -55 to 150°C (TJ) | -55 to 150°C (TJ) | -55 to 175°C (TA) |
| Type | Zener | Zener | Zener | Zener | Zener |
| Bidirectional Channels | 1 | 1 | 1 | 1 | 1 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
Engineering Selection Recommendations
Primary Selection Criteria:
All substitute parts listed maintain electrical compatibility within the SMAJ54 series specification envelope. The primary differentiator between the main part and substitutes is the clamping voltage specification: the SMAJ54CE3/TR13 specifies 96.3V maximum clamping voltage, while all substitute parts specify 87.1V maximum clamping voltage. This represents a lower clamping voltage in substitute parts, which may be acceptable depending on circuit protection requirements.
Compliance and Certification:
All parts maintain identical regulatory compliance: RoHS3 compliant, REACH unaffected, and MSL 1 (unlimited moisture sensitivity). ECCN and HTSUS classifications are identical across all parts, ensuring consistent export and tariff treatment.
Temperature Operating Range:
The SMAJ54CE3/TR13 specifies -65°C to 150°C (junction temperature). Substitute parts specify -55°C to 150°C minimum range, with SMAJ54CA-TP extending to 175°C. Applications requiring operation below -55°C require the original SMAJ54CE3/TR13 specification.
Availability and Inventory:
Substitute parts demonstrate higher inventory availability: SMAJ54CA (Meritek) with 19,960 units, SMAJ54CA-13-F (Diodes Incorporated) with 35,300 units, and SMAJ54CA-TP (Micro Commercial Co) with 3,100 units, compared to the original part's 1,088 units.
Frequently Asked Questions (FAQ)
Q: Can SMAJ54CA substitute for SMAJ54CE3/TR13 in all applications?
A: SMAJ54CA maintains identical reverse standoff (54V) and breakdown (60V) voltage specifications. The clamping voltage differs: SMAJ54CA specifies 87.1V maximum versus 96.3V for the original part. Substitution is valid for applications where 87.1V clamping voltage provides adequate protection. Operating temperature range is -55°C to 150°C versus -65°C to 150°C for the original part.
Q: What is the difference between SMAJ54CA-13-F and SMAJ54CA-E3/61?
A: Both parts are functionally equivalent with identical electrical specifications: 54V reverse standoff, 60V breakdown, 87.1V clamping voltage, and 4.6A peak pulse current. SMAJ54CA-13-F is manufactured by Diodes Incorporated with 35,300 units in stock. SMAJ54CA-E3/61 is manufactured by Vishay General Semiconductor (TransZorb® series) with 1,515 units in stock. Both use DO-214AC (SMA) packaging and operate across -55°C to 150°C.
Q: Is the DO-214AC package identical across all substitute parts?
A: Yes. All parts listed use DO-214AC (SMA) surface-mount packaging, ensuring mechanical and electrical compatibility with the original SMAJ54CE3/TR13 footprint and PCB layout.
Q: Why does SMAJ54CA-TP specify a higher operating temperature range?
A: SMAJ54CA-TP (Micro Commercial Co) specifies -55°C to 175°C ambient temperature (TA) versus -55°C to 150°C junction temperature (TJ) for other parts. This represents a manufacturer-specific rating difference. Both ranges encompass standard industrial operating conditions.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts maintain RoHS3 compliance, REACH unaffected status, and MSL 1 (unlimited moisture sensitivity), matching the original SMAJ54CE3/TR13 environmental and regulatory specifications.
Q: What is the significance of the clamping voltage difference between the original part and substitutes?
A: The SMAJ54CE3/TR13 specifies 96.3V maximum clamping voltage, while substitute parts specify 87.1V. Clamping voltage determines the maximum voltage the TVS diode allows across the protected circuit during a transient event. Lower clamping voltage provides tighter protection but may not be suitable for all applications. Circuit design requirements determine whether 87.1V clamping is acceptable.
Q: Can SMAJ54CA-TP be used in applications requiring -65°C operation?
A: No. SMAJ54CA-TP specifies -55°C minimum operating temperature. Applications requiring operation at -65°C require the original SMAJ54CE3/TR13, which specifies -65°C to 150°C junction temperature range.
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