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Vishay General Semiconductor - Diodes Division P4SMA15AHM3/H
- Part No.:
- P4SMA15AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15AHM3/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,943
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Product details
Overview
P4SMA15AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 15 V breakdown voltage (VBR min/max: 14.3–15.8 V at 1 mA), 12.8 V stand-off voltage (VWM), 21.2 V maximum clamping voltage (VC) at 18.9 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the P4SMA15AHM3/H datasheet, P4SMA15AHM3/H pinout, P4SMA15AHM3/H application, or P4SMA15AHM3/H equivalent, this device is selected for robust ESD and surge protection where AEC-Q101 qualification, low-profile SMA packaging, and stable clamping under repetitive transients are required.
Technical Context
The P4SMA15AHM3/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while thermal resistance (RθJA = 120 °C/W) supports operation up to TJ = 150 °C.
It delivers 400 W peak pulse power per 10/1000 µs waveform when mounted on 5.0 mm × 5.0 mm copper pads, with clamping response time <1 ns and incremental surge resistance optimized for fast transient suppression in DC power rails and low-voltage sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at IT = 1 mA - defines precise avalanche initiation range for reliable overvoltage triggering |
| VWM | 12.8 V - maximum continuous reverse working voltage before leakage rises above 1 µA |
| VC @ IPPM | 21.2 V at 18.9 A - clamped voltage during 400 W transient, limiting stress on downstream components |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capability under standardized lightning/surge test conditions |
| IFSM | 40 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction during fault events |
| TJ max | 150 °C - maximum junction temperature enabling use in under-hood automotive and industrial ambient environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0, MSL Level 1 (260 °C reflow peak), JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / cathode-referenced reference node | Connected to ground or low-side return path in unidirectional TVS configuration |
| Cathode | Avalanche conduction terminal / protected line connection | Connected to the line being protected (e.g., 12 V rail or sensor output); marked by band on package |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control units and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets environmental compliance requirements for global OEM production without compromising surge performance |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly laid out on PCB |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes voltage overshoot during transients, reducing risk of latch-up or damage to 15 V-rated ICs |
| Fast response time & low dynamic impedance | Sub-nanosecond turn-on enables protection of high-speed analog and digital signal paths |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump and alternator transients in body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp spikes above 15 V before reaching LDO or MCU VDD. Use Value: Limits clamped voltage to 21.2 V at 18.9 A, preventing damage to 24 V-tolerant but 16 V-max input-rated power management ICs. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input cards. IC Role / Device Role / Timing Role: TVS installed across sensor output and ground to suppress ESD and inductive kickback from nearby solenoid switching. Use Value: Withstand 400 W surges while maintaining <1 µA leakage at 12.8 V, preserving sensor accuracy and offset stability. |
| Consumer Power Adapter Input Stage | Telecom DC Power Distribution |
Use Scenario: Secondary-side overvoltage protection in 15 V wall adapters powering USB-C PD accessories. IC Role / Device Role / Timing Role: Clamps rectified DC output during capacitor failure or regulator dropout events. Use Value: Fast 1 ns response and 21.2 V clamping prevent catastrophic failure of downstream USB-PD controller ICs rated for 20 V absolute max. |
Use Scenario: Surge suppression on -48 V telecom power feeds entering remote radio units (RRUs). IC Role / Device Role / Timing Role: Unidirectional TVS referenced to system ground, absorbing induced lightning surges on long cable runs. Use Value: 400 W rating and 150 °C TJ max ensure reliability in outdoor enclosures with limited airflow and wide ambient swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/5A | Same VBR range (14.3–15.8 V), identical SMA package, but commercial-grade (non-AEC-Q101), 300 W PPPM above 91 V only - rated 400 W at 15 V | Lacks automotive qualification; suitable for consumer/industrial designs without AEC-Q101 mandate | Select when cost sensitivity outweighs automotive reliability requirements and layout allows same thermal pad design |
| 1.5SMC15A | Higher-power SMC (DO-214AB) package, same electrical specs, 400 W rating, but larger footprint (7.11 × 6.22 mm vs. SMA's 4.5 × 2.79 mm) | Requires PCB area increase; better thermal dissipation for high-duty-cycle surge environments | Choose when board space permits and higher thermal margin is needed beyond RθJA = 120 °C/W |
Compared with SMAJ15A-E3/5A and 1.5SMC15A, the P4SMA15AHM3/H uniquely combines AEC-Q101 qualification, halogen-free construction, and compact SMA footprint - making it optimal for space-constrained automotive ECUs where regulatory compliance and reliability are non-negotiable.
Availability
P4SMA15AHM3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC distribution requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA15AHM3/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4SMA series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in automotive, industrial, and communications systems where AEC-Q101 compliance and consistent clamping behavior are critical.
FAQ
What is the breakdown voltage tolerance of P4SMA15AHM3/H?
The P4SMA15AHM3/H has a breakdown voltage (VBR) range of 14.3 V to 15.8 V at 1 mA test current, corresponding to ±5% tolerance around the nominal 15 V rating. This tight tolerance ensures predictable clamping onset in precision protection circuits and is verified per the Vishay P4SMA datasheet revision 09-Jan-2024, page 2.
Is P4SMA15AHM3/H suitable for bidirectional transient suppression?
No, P4SMA15AHM3/H is a unidirectional TVS diode - indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay offers the P4SMA15CA variant. Using P4SMA15AHM3/H in bidirectional AC or floating signal paths would result in forward conduction during negative transients and potential failure.
Does P4SMA15AHM3/H require a heatsink for standard operation?
No external heatsink is required for P4SMA15AHM3/H under typical single-pulse or low-duty-cycle surge conditions. Its RθJA of 120 °C/W assumes mounting on 5.0 mm × 5.0 mm copper pads per terminal, which provides sufficient thermal relief for 400 W pulses. Continuous power dissipation remains limited to 3.3 W at 50 °C ambient.
What does the "HM3" suffix signify in P4SMA15AHM3/H?
The "HM3" suffix in P4SMA15AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates 7-inch tape-and-reel packaging (1800 pcs/reel), and "M3" confirms compliance with JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance standards.
How does P4SMA15AHM3/H compare to P4SMA15AHE3/H in terms of compliance?
Both P4SMA15AHM3/H and P4SMA15AHE3/H are AEC-Q101 qualified and RoHS-compliant, but P4SMA15AHM3/H uses halogen-free molding compound while P4SMA15AHE3/H is standard RoHS (with halogens). The HM3 version meets stricter environmental mandates such as China RoHS II and EU ELV, without sacrificing electrical or thermal performance.
P4SMA15AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 18.9A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA15AHM3/H FAQ
1.How can I place an order for P4SMA15AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15AHM3/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P4SMA15AHM3/H reliable?
The price and inventory of P4SMA15AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA15AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA15AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15AHM3/H?
P4SMA15AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15AHM3/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P4SMA15AHM3/H?
For technical support, including P4SMA15AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15AHM3/H requirements.
6.How does Aetrix verify that P4SMA15AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA15AHM3/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P4SMA15AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA15AHM3/H?
All P4SMA15AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15AHM3/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P4SMA15AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA15AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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