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Vishay General Semiconductor - Diodes Division P4SMA15AHE3_A/H
- Part No.:
- P4SMA15AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15AHE3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,254
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Product details
Overview
P4SMA15AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 15 V breakdown voltage (VBR = 14.3–15.8 V at 1 mA), 12.8 V standoff voltage (VWM), and 21.2 V clamping voltage (VC) at 18.9 A peak pulse current - designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power electronics.
For engineers reviewing the P4SMA15AHE3_A/H datasheet, P4SMA15AHE3_A/H pinout, P4SMA15AHE3_A/H application, or P4SMA15AHE3_A/H equivalent, this AEC-Q101 qualified TVS offers verified 400 W peak pulse power (10/1000 µs), low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for high-reliability board-level ESD and surge protection design.
Technical Context
This unidirectional TVS operates with a cathode-band polarity marking and exhibits fast response time (<1 ns) to transient overvoltages, enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5). Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM).
Thermally, it features RθJA = 120 °C/W and RθJL = 30 °C/W, supporting operation up to TJ = 150 °C. The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine) and meets UL 497B recognition for protector classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at IT = 1 mA - defines precise voltage threshold where avalanche conduction begins under controlled test conditions |
| VWM | 12.8 V - maximum continuous reverse operating voltage before significant leakage; sets safe margin below VBR |
| VC @ IPPM | 21.2 V at 18.9 A - clamped voltage during 400 W transient, directly limiting stress on downstream components |
| PPPM | 400 W (10/1000 µs waveform) - peak surge energy handling capacity for short-duration transients |
| 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 defining thermal derating envelope for reliable long-term operation |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode (marked with band) | Avalanche conduction terminal | Connected to protected line (e.g., power rail or signal trace); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation |
| Glass passivated chip junction | Ensures stable VBR over temperature and lifetime, with ±5% tolerance and <1 µA leakage at VWM |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or special handling |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended temperature and reliability validation |
| Low profile SMA package | Reduces PCB footprint vs. SMB/SMAJ; compatible with automated pick-and-place and high-density layouts |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp voltage spikes above 15 V. Use Value: Limits rail voltage to ≤21.2 V during 400 W surges, preventing damage to MCU power inputs and CAN transceivers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across differential signal pair to suppress ESD and cable discharge events. Use Value: Clamps transients within nanoseconds while adding <1 pF capacitance, preserving signal integrity up to 10 MHz. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
|
Use Scenario: Safeguarding AC-DC converter primary-side rectifiers against surge coupling from mains. IC Role / Device Role / Timing Role: Unidirectional TVS on DC bus input to absorb repetitive switching transients. Use Value: Handles 300–400 W pulses at 0.01% duty cycle, extending capacitor and MOSFET lifetime in compact adapters. |
Use Scenario: Protecting -48 V telecom power distribution boards from lightning-induced surges on outdoor lines. IC Role / Device Role / Timing Role: TVS installed at board edge to divert surge current before reaching PoE controllers or DC-DC stages. Use Value: Withstands 18.9 A peak current and maintains clamping below -55 V, meeting GR-1089-CORE Level 3 requirements. |
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), but rated for 400 W at 10/1000 µs with higher VC = 24.4 V; no AEC-Q101 qualification | Commercial-grade only; not approved for automotive underhood use | Select when cost sensitivity outweighs automotive qualification requirements and higher clamping voltage is acceptable |
| 1.5SMC15A | Higher package thermal resistance (RθJA ≈ 150 °C/W vs. 120 °C/W); same VBR/VC, but SMC (DO-214AB) is larger and less suitable for dense layouts | Requires larger PCB pad area; not optimized for automated placement in space-constrained designs | Choose only if existing SMC footprint reuse is mandatory and thermal margin allows for reduced power derating |
Compared with SMAJ15A-E3/5A and 1.5SMC15A, P4SMA15AHE3_A/H delivers tighter thermal performance, AEC-Q101 validation, and smaller SMA footprint - making it the preferred choice for automotive and high-density industrial designs where reliability and layout efficiency are prioritized.
Availability
P4SMA15AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface circuits, consumer power adapter input stages, and telecom DC feed protection requiring stable component supply and AEC-Q101 compliance.
Supply support for P4SMA15AHE3_A/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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets high-volume, high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 qualification, low-profile mounting, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of P4SMA15AHE3_A/H at its rated peak pulse current?
The P4SMA15AHE3_A/H has a maximum clamping voltage (VC) of 21.2 V at 18.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA15AHE3_A/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C), ensuring predictable protection behavior in harsh environments.
Is P4SMA15AHE3_A/H suitable for automotive applications?
Yes, P4SMA15AHE3_A/H is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS modules. Its qualification covers temperature cycling, highly accelerated life testing (HALT), and ESD robustness per JESD22 standards. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, and the "_A/H" ordering code confirms packaging in 7" tape-and-reel for automated assembly - all verified in Vishay's official documentation for P4SMA15AHE3_A/H.
What is the standoff voltage (VWM) of P4SMA15AHE3_A/H, and why does it matter?
The standoff voltage (VWM) of P4SMA15AHE3_A/H is 12.8 V - the maximum continuous reverse voltage that can be applied without triggering significant leakage current (>1 µA). This parameter establishes the safety margin below the breakdown voltage (VBR = 14.3–15.8 V) and ensures the P4SMA15AHE3_A/H remains non-conductive during normal operation, avoiding power loss or false triggering in 12 V nominal systems.
Does P4SMA15AHE3_A/H have polarity markings, and how is it oriented on the PCB?
Yes, P4SMA15AHE3_A/H is unidirectional and features a visible cathode band on the SMA (DO-214AC) package body. During PCB layout, the banded end must connect to the line being protected (e.g., 12 V rail), while the anode connects to ground. This orientation ensures proper avalanche conduction during overvoltage events. Incorrect polarity will prevent clamping and may result in catastrophic failure under surge conditions - a critical detail confirmed in the Vishay P4SMA15AHE3_A/H datasheet mechanical drawings and application notes.
What is the thermal resistance of P4SMA15AHE3_A/H, and how does it affect layout design?
P4SMA15AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. These values require minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated 400 W pulse handling. Layouts with reduced copper area will derate power capability - for example, halving pad size increases RθJA by ~30%, directly impacting sustained surge performance. This thermal behavior is documented in Figure 2 of the official P4SMA15AHE3_A/H datasheet.
P4SMA15AHE3_A/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:
- Active
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA15AHE3_A/H FAQ
1.How can I place an order for P4SMA15AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15AHE3_A/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 P4SMA15AHE3_A/H reliable?
The price and inventory of P4SMA15AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA15AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA15AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15AHE3_A/H?
P4SMA15AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15AHE3_A/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 P4SMA15AHE3_A/H?
For technical support, including P4SMA15AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA15AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA15AHE3_A/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 P4SMA15AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA15AHE3_A/H?
All P4SMA15AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15AHE3_A/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 P4SMA15AHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA15AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA15AHE3_A/H Tags
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