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SMAJ5.0A-13 Equivalent & Substitute Parts
Part Overview
The SMAJ5.0A-13 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in DO-214AC (SMA) surface mount package. This component is rated for 5V reverse standoff voltage with 9.2V maximum clamping voltage at 44.6A peak pulse current and 400W peak pulse power dissipation. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for general-purpose transient voltage suppression applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SMAJ5.0A-13 |
| Manufacturer | Diodes Incorporated |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Unidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 5V |
| Voltage - Breakdown (Min) | 6.4V |
| Voltage - Clamping (Max) @ Ipp | 9.2V |
| Current - Peak Pulse (10/1000µs) | 44.6A |
| Power - Peak Pulse | 400W |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | DO-214AC, SMA |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Discontinued at DiGi Electronics |
Substitute Part Grouping Explanation
Substitution of the SMAJ5.0A-13 is determined by strict equivalence across the following critical parameters:
- Voltage - Reverse Standoff (Typ): 5V
- Voltage - Breakdown (Min): 6.4V
- Voltage - Clamping (Max) @ Ipp: 9.2V
- Current - Peak Pulse (10/1000µs): 44.6A minimum
- Power - Peak Pulse: 400W minimum
- Mounting Type: Surface Mount
- Package / Case: DO-214AC or SMA equivalent
- Operating Temperature Range: -55°C minimum to 150°C maximum
Substitute parts are grouped into two categories:
Category A - Direct Electrical & Mechanical Equivalents (9.2V Clamping): Parts maintaining identical clamping voltage (9.2V) and peak pulse current (44.6A) specifications with compatible packaging. These provide drop-in replacement capability.
Category B - Higher Performance Alternatives (13.4V Clamping / 600W Power): Parts with elevated clamping voltage (13.4V) and increased power dissipation (600W) or peak pulse current (65.3A or higher). These provide enhanced transient suppression capability but operate at higher clamping voltages and require circuit validation.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Package | Operating Temperature | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SMAJ5.0A-13 | Diodes Incorporated | 5V | 9.2V | 44.6A | 400W | DO-214AC, SMA | -55°C ~ 150°C (TJ) | Discontinued | RoHS non-compliant |
| SMAJ5.0A-13-F | Diodes Incorporated | 5V | 9.2V | 44.6A | 400W | DO-214AC, SMA | -55°C ~ 150°C (TJ) | Active | ROHS3 Compliant |
| SMAJ5.0A-E3/5A | Vishay General Semiconductor - Diodes Division | 5V | 9.2V | 44.6A | 400W | DO-214AC, SMA | -55°C ~ 150°C (TJ) | Active | ROHS3 Compliant |
| SMAJ5.0A-E3/61 | Vishay General Semiconductor - Diodes Division | 5V | 9.2V | 44.6A | 400W | DO-214AC, SMA | -55°C ~ 150°C (TJ) | Active | ROHS3 Compliant |
| SMAJ5.0A-M3/61 | Vishay General Semiconductor - Diodes Division | 5V | 9.2V | 44.6A | 400W | DO-214AC, SMA | -55°C ~ 150°C (TJ) | Active | ROHS3 Compliant |
| SMAJ5.0A-TP | Micro Commercial Co | 5V | 9.2V | 44.6A | 400W | DO-214AC, SMA | -55°C ~ 175°C (TA) | Active | ROHS3 Compliant |
| PTVS5V0S1UR,115 | Nexperia USA Inc. | 5V | 9.2V | 44.6A | 400W | SOD-123W | -55°C ~ 150°C (TA) | Active | ROHS3 Compliant |
| SM4T6V7AY | STMicroelectronics | 5V | 13.4V | 174A (8/20µs) | 400W | DO-214AC, SMA | -55°C ~ 150°C (TJ) | Active | ROHS3 Compliant |
| SMA6J5.0A | Littelfuse Inc. | 5V | 9.2V | 65.3A | 600W | DO-214AC, SMA | -65°C ~ 150°C (TJ) | Active | ROHS3 Compliant |
| SMA6J5.0A-E3/61 | Vishay General Semiconductor - Diodes Division | 5V | 13.4V | 298A (8/20µs) | 600W | DO-214AC, SMA | -55°C ~ 150°C (TJ) | Active | ROHS3 Compliant |
| SMA6J5.0A-TR | STMicroelectronics | 5V | 13.4V | 298A (8/20µs) | 600W | DO-214AC, SMA | -55°C ~ 175°C (TJ) | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes (Direct Equivalents):
SMAJ5.0A-13-F (Diodes Incorporated) is the direct successor to the discontinued SMAJ5.0A-13, maintaining identical electrical specifications and packaging. This part is ROHS3 compliant and currently in active production with high inventory availability (35,100 pcs).
SMAJ5.0A-E3/5A, SMAJ5.0A-E3/61, and SMAJ5.0A-M3/61 (Vishay General Semiconductor - Diodes Division) provide equivalent performance with ROHS3 compliance. All three maintain the 9.2V clamping voltage and 44.6A peak pulse current specification. SMAJ5.0A-E3/61 offers the highest inventory level (95,100 pcs).
SMAJ5.0A-TP (Micro Commercial Co) provides equivalent electrical performance with extended operating temperature range (-55°C ~ 175°C) and ROHS3 compliance. Inventory availability is lower (1,220 pcs).
Alternative Package Option:
PTVS5V0S1UR,115 (Nexperia USA Inc.) maintains identical electrical specifications but uses SOD-123W package instead of DO-214AC (SMA). This part is AEC-Q101 qualified and ROHS3 compliant. Package substitution requires PCB layout modification.
Higher Performance Alternatives:
SMA6J5.0A (Littelfuse Inc.) provides increased peak pulse current (65.3A) and power dissipation (600W) while maintaining 9.2V clamping voltage. Extended temperature range (-65°C ~ 150°C) and ROHS3 compliance are provided. This part is suitable for applications requiring enhanced transient suppression margin.
SM4T6V7AY (STMicroelectronics), SMA6J5.0A-E3/61 (Vishay), and SMA6J5.0A-TR (STMicroelectronics) operate at elevated clamping voltage (13.4V) with significantly higher peak pulse current (174A to 298A) and 600W power dissipation. These parts are AEC-Q101 qualified and ROHS3 compliant. Circuit validation is required to confirm compatibility with the higher clamping voltage.
Frequently Asked Questions (FAQ)
Q: Can SMAJ5.0A-13-F be used as a direct replacement for SMAJ5.0A-13?
A: Yes. SMAJ5.0A-13-F maintains identical electrical specifications (5V standoff, 9.2V clamping, 44.6A peak pulse current, 400W power) and DO-214AC (SMA) packaging. The primary difference is ROHS3 compliance and active production status. No circuit modifications are required.
Q: What is the difference between parts with 9.2V clamping and 13.4V clamping?
A: Clamping voltage determines the maximum voltage the TVS diode allows across the protected circuit during transient suppression. Parts with 9.2V clamping limit transient voltage to 9.2V maximum, while 13.4V clamping parts allow higher voltage transients. Selection depends on the protected circuit's voltage tolerance. Higher clamping voltage provides less aggressive suppression but may be necessary for circuits sensitive to voltage regulation.
Q: Can I use SMA6J5.0A instead of SMAJ5.0A-13?
A: SMA6J5.0A provides higher performance (65.3A peak pulse current, 600W power dissipation) while maintaining 9.2V clamping voltage. It is electrically compatible and provides enhanced transient suppression margin. No circuit modifications are required for this substitution.
Q: What does ROHS3 compliance mean?
A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The original SMAJ5.0A-13 is RoHS non-compliant. All active substitute parts listed are ROHS3 compliant.
Q: Can I use PTVS5V0S1UR,115 in place of SMAJ5.0A-13?
A: PTVS5V0S1UR,115 maintains identical electrical specifications but uses SOD-123W package instead of DO-214AC (SMA). Physical package dimensions differ, requiring PCB layout modification. Electrical performance is equivalent.
Q: What is the difference between cut tape and tape & reel packaging?
A: Cut tape (CT) and Digi-Reel packaging are supplied on continuous tape suitable for manual or semi-automatic assembly. Tape & Reel (TR) packaging is supplied on full reels for high-volume automated assembly. Electrical specifications are identical; packaging selection depends on assembly process requirements.
Q: Are the higher current alternatives (174A, 298A) backward compatible?
A: Parts with higher peak pulse current ratings are electrically compatible with circuits designed for lower current ratings. The TVS diode will suppress transients more effectively. However, parts with elevated clamping voltage (13.4V vs 9.2V) require circuit validation to confirm the protected circuit can tolerate the higher clamping voltage during transient events.
Q: What is AEC-Q101 qualification?
A: AEC-Q101 is an automotive electronics qualification standard. Parts meeting this qualification have undergone rigorous testing for automotive applications. PTVS5V0S1UR,115, SM4T6V7AY, SMA6J5.0A-E3/61, and SMA6J5.0A-TR are AEC-Q101 qualified, indicating suitability for automotive and high-reliability applications.
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