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Vishay General Semiconductor - Diodes Division P4KA12AHE3/54
- Part No.:
- P4KA12AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA12AHE3/54.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,910
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Product details
Overview
P4KA12AHE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, with 11.4 V to 12.6 V breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 16.7 V clamping voltage (VC) at 24.0 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - used for protecting automotive sensor signal lines and MOSFET gates against inductive switching transients.
For engineers reviewing the P4KA12AHE3/54 datasheet, P4KA12AHE3/54 pinout, P4KA12AHE3/54 application, or P4KA12AHE3/54 equivalent, key selection criteria include AEC-Q101 qualification, 185 °C max junction temperature, low 0.078 %/°C VBR temperature coefficient, RoHS-compliant HE3 packaging, and verified clamping performance under repetitive surge conditions.
Technical Context
The P4KA12AHE3/54 employs Vishay's patented PAR® construction for stable high-temperature operation and low incremental surge resistance. It delivers precise unidirectional clamping with 1.0 mA test current and maintains <1.0 µA reverse leakage at VWM up to 150 °C junction temperature.
Designed for automotive environments, it meets AEC-Q101 stress requirements including high-temperature operating life, temperature cycling, and solderability per J-STD-002/JESD22-B102. Its 10/1000 µs waveform response supports protection of CAN, LIN, and analog sensor interfaces against ISO 7637-2 pulse 1, 2a, and 3a transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines reliable conduction onset under overvoltage stress |
| VWM | 10.2 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 16.7 V at 24.0 A - clamped voltage during 400 W transient, limiting downstream device stress |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capability without failure |
| TJ max. | +185 °C - enables operation in under-hood automotive locations with minimal derating |
| Temp. Coeff. VBR | 0.078 %/°C - ensures predictable voltage shift across full automotive temperature range |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including HTOL, TC, and HAST |
Pinout & Package
DO-204AL (DO-41) molded epoxy package with matte tin-plated leads; cathode denoted by color band; compliant with UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to protected circuit ground or low-side reference point |
| Cathode | Clamping node | Connected to protected line (e.g., sensor output); conducts when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across -65 °C to +185 °C |
| 400 W peak pulse power (10/1000 µs) | Handles ISO 7637-2 Pulse 1 (inductive load dump) without degradation |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood use with traceable lot-level reliability data |
| Low 0.078 %/°C VBR tempco | Minimizes clamping voltage drift in engine control unit (ECU) ambient temperature swings |
| RoHS-compliant, JESD201 Class 2 whisker resistant | Ensures long-term solder joint integrity in automated SMT reflow and thermal cycling |
Applications
| Automotive Sensor Protection | Power Supply Rail Clamping |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, and position sensors in engine management systems from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between sensor output and ground, clamping transients before they reach ADC input or signal conditioning IC. Use Value: Limits voltage excursion to ≤16.7 V during 24 A surges, preserving sensor accuracy and preventing latch-up in connected microcontrollers. | Use Scenario: Safeguarding 12 V supply rails feeding infotainment head units and body control modules against battery line transients. IC Role / Device Role / Timing Role: Parallel-connected TVS on main VBAT rail, absorbing energy from ISO 7637-2 Pulse 2a (supply interruption) and Pulse 5a (load dump). Use Value: Withstands 400 W pulses while maintaining 10.2 V stand-off, ensuring uninterrupted operation of LDOs and PMICs downstream. |
| MOSFET Gate Protection | CAN/LIN Bus Interface Protection |
Use Scenario: Shielding high-side N-channel MOSFET gates in automotive lighting drivers from gate-source voltage spikes during PWM switching. IC Role / Device Role / Timing Role: TVS placed between gate and source terminals to clamp VGS excursions beyond safe limits (±20 V). Use Value: Fast response time and 16.7 V clamping prevent gate oxide breakdown during fast dv/dt events in LED driver circuits. | Use Scenario: Adding secondary protection to CAN transceivers (e.g., TJA1042) in vehicle network gateways exposed to ESD and coupled noise. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on CAN_H/CAN_L lines referenced to ground, supplementing internal transceiver ESD structures. Use Value: Maintains signal integrity with <100 pF junction capacitance at VWM, while clamping common-mode surges to safe levels for ISO 11898-2 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5A | Same DO-214AC (SMA) package; 12 V nominal VBR; 15.4 V VC at 24.7 A; lower 400 W rating but higher IPPM tolerance | Surface-mount only; not AEC-Q101 qualified; intended for industrial/commercial use | Select for cost-sensitive non-automotive designs where leaded DO-41 mounting is unavailable |
| 1.5KE12A | Higher 1500 W PPPM; DO-201AD package; 12.2–13.5 V VBR; 19.9 V VC at 75.4 A; no AEC-Q101 qualification | Larger footprint; suited for primary-level board-level surge protection rather than component-level IC interface protection | Choose when higher energy absorption is required upstream of P4KA12AHE3/54, e.g., at connector entry points |
Compared with SMAJ12A-E3/5A and 1.5KE12A, the P4KA12AHE3/54 offers AEC-Q101 qualification, tighter VBR tolerance (±5.3%), lower clamping voltage (16.7 V vs. ≥19.9 V), and optimized thermal performance for under-hood placement - making it the preferred choice for automotive signal-line protection where reliability and precision clamping are critical.
Availability
P4KA12AHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, power supply rail clamping, and MOSFET gate protection requiring stable component supply across production lifecycles.
Supply support for P4KA12AHE3/54 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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The P4KA12AHE3/54 belongs to Vishay's automotive TVS diode family designed specifically for AEC-Q101-compliant transient suppression in engine control, body electronics, and ADAS subsystems - emphasizing thermal stability, low leakage, and repeatable clamping performance.
FAQ
What is the breakdown voltage range of the P4KA12AHE3/54?
The P4KA12AHE3/54 has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V measured at 1.0 mA test current. This tight ±5.3% tolerance ensures consistent clamping behavior across production lots and temperature extremes, supporting robust design margins in automotive signal protection circuits.
Is the P4KA12AHE3/54 qualified for automotive use?
Yes, the P4KA12AHE3/54 is AEC-Q101 qualified and designated as automotive grade (HE3 suffix). It undergoes rigorous stress testing including high-temperature operating life, temperature cycling, and mechanical shock - all documented in Vishay's qualification report for the P4KAx series per Document Number 88364.
What is the maximum clamping voltage of the P4KA12AHE3/54 during a transient event?
The P4KA12AHE3/54 clamps to a maximum of 16.7 V at 24.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured and guaranteed per ANSI/IEEE C62.35, enabling accurate overvoltage margin analysis for protected ICs such as automotive microcontrollers and transceivers.
Does the P4KA12AHE3/54 have RoHS and lead-free compliance?
Yes, the P4KA12AHE3/54 carries the HE3 suffix indicating full RoHS 2002/95/EC compliance and high-reliability automotive qualification. Its matte tin-plated leads meet J-STD-002 solderability standards and JESD201 Class 2 whisker resistance requirements for long-term reliability in reflow-soldered assemblies.
What package type does the P4KA12AHE3/54 use, and what are its key mechanical features?
The P4KA12AHE3/54 uses the DO-204AL (DO-41) axial-leaded package with molded epoxy housing rated UL 94 V-0. Key features include 0.375" (9.5 mm) minimum lead length, 0.034" (0.86 mm) anode/cathode lead diameter, and cathode identification via color band - all specified in Vishay's Package Outline Drawing 91000.
P4KA12AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 24A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KA12AHE3/54 FAQ
1.How can I place an order for P4KA12AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA12AHE3/54 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 P4KA12AHE3/54 reliable?
The price and inventory of P4KA12AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA12AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KA12AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA12AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA12AHE3/54?
P4KA12AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA12AHE3/54 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 P4KA12AHE3/54?
For technical support, including P4KA12AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA12AHE3/54 requirements.
6.How does Aetrix verify that P4KA12AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KA12AHE3/54 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 P4KA12AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KA12AHE3/54?
All P4KA12AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA12AHE3/54, 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 P4KA12AHE3/54 part is unused and in its original packaging.
Return procedure for P4KA12AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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