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P4SMA16A-Q Equivalent & Substitute Parts
Part Overview
The P4SMA16A-Q is an automotive-grade unidirectional transient voltage suppressor (TVS) diode manufactured by Bourns Inc. in the DO-214AC (SMA) surface mount package. This component is designed for telecom applications requiring transient voltage protection with a 13.6V reverse standoff voltage and 22.5V maximum clamping voltage. The part is currently in active production status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 13.6 | V |
| Voltage - Breakdown (Min) | 15.2 | V |
| Voltage - Clamping (Max) @ Ipp | 22.5 | V |
| Current - Peak Pulse (10/1000µs) | 18.2 | A |
| Power - Peak Pulse | 400 | W |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Package / Case | DO-214AC, SMA | — |
| Mounting Type | Surface Mount | — |
| Grade | Automotive | — |
| Qualification | AEC-Q101 | — |
Substitute Part Grouping Explanation
Substitution of the P4SMA16A-Q is determined by strict equivalence in the following electrical and mechanical parameters:
Critical Substitution Parameters:
- Unidirectional channel configuration (1 channel required)
- Voltage - Reverse Standoff: 13V to 13.6V range
- Voltage - Clamping (Max) @ Ipp: 21.5V to 22.5V range
- Current - Peak Pulse (10/1000µs): minimum 18.2A
- Power - Peak Pulse: 400W
- Package / Case: DO-214AC or SMA equivalent
- Mounting Type: Surface Mount
- Operating Temperature Range: -55°C to 150°C minimum
- Grade: Automotive
- Qualification: AEC-Q101 required
The SMAJE13AH from Eaton - Electronics Division meets all substitution criteria within the specified parameter tolerances for this product category.
Parameter Comparison
| Parameter | P4SMA16A-Q (Bourns) | SMAJE13AH (Eaton) | Compatibility |
|---|---|---|---|
| Voltage - Reverse Standoff (Typ) | 13.6V | 13V | Within tolerance |
| Voltage - Breakdown (Min) | 15.2V | 14.4V | Within tolerance |
| Voltage - Clamping (Max) @ Ipp | 22.5V | 21.5V | Within tolerance |
| Current - Peak Pulse (10/1000µs) | 18.2A | 18.6A | Equivalent |
| Power - Peak Pulse | 400W | 400W | Equivalent |
| Operating Temperature Range | -55°C to 150°C | -55°C to 150°C | Equivalent |
| Package / Case | DO-214AC, SMA | DO-214AC, SMA | Equivalent |
| Mounting Type | Surface Mount | Surface Mount | Equivalent |
| Grade | Automotive | Automotive | Equivalent |
| Qualification | AEC-Q101 | AEC-Q101 | Equivalent |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Equivalent |
Engineering Selection Recommendations
The SMAJE13AH is a direct substitute for the P4SMA16A-Q based on the following engineering criteria:
Compliance & Certification: Both parts maintain identical automotive-grade classification with AEC-Q101 qualification, ensuring compliance with automotive reliability standards. Both are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.
Electrical Performance: The SMAJE13AH operates within the specified voltage and current parameters of the P4SMA16A-Q. The reverse standoff voltage differential (13V vs. 13.6V) and clamping voltage differential (21.5V vs. 22.5V) remain within acceptable engineering tolerances for telecom transient protection applications. Peak pulse current capability (18.6A) exceeds the minimum requirement of 18.2A.
Mechanical & Thermal Compatibility: Both parts utilize identical DO-214AC (SMA) surface mount packaging and support the same operating temperature range (-55°C to 150°C junction temperature), ensuring direct PCB compatibility without design modification.
Product Status: Both parts are in active production with established supply availability, supporting long-term design continuity.
Frequently Asked Questions (FAQ)
Q: Can the SMAJE13AH replace the P4SMA16A-Q in existing designs without PCB modification?
A: Yes. Both parts use identical DO-214AC (SMA) surface mount packaging with equivalent pin configurations and footprints. No PCB layout changes are required.
Q: What is the voltage tolerance difference between these parts?
A: The P4SMA16A-Q has a 13.6V reverse standoff voltage, while the SMAJE13AH has 13V. This 0.6V difference remains within acceptable engineering tolerance for telecom transient suppression circuits. The clamping voltage difference (22.5V vs. 21.5V) is 1V, also within tolerance.
Q: Are both parts qualified for automotive applications?
A: Yes. Both the P4SMA16A-Q and SMAJE13AH carry automotive-grade classification with AEC-Q101 qualification, meeting automotive reliability and quality standards.
Q: Do these parts have identical moisture sensitivity ratings?
A: Yes. Both parts have Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related handling restrictions during storage or assembly.
Q: Can the SMAJE13AH handle the same peak pulse power as the P4SMA16A-Q?
A: Yes. Both parts are rated for 400W peak pulse power, providing equivalent transient energy dissipation capability.
Q: Are there any environmental compliance differences between these parts?
A: No. Both parts are ROHS3 compliant and REACH unaffected, meeting identical environmental regulatory requirements.
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