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Vishay General Semiconductor - Diodes Division P4KA11HE3/73
- Part No.:
- P4KA11HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA11HE3/73.pdf
- Description:
- TVS DIODE 8.92VWM 16.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,936
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Product details
Overview
P4KA11HE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, featuring 9.9 V to 12.1 V breakdown voltage (VBR), 16.2 V clamping voltage (VC) at 24.7 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for engine control units and powertrain electronics.
For engineers reviewing the P4KA11HE3/73 datasheet, P4KA11HE3/73 pinout, P4KA11HE3/73 application, or P4KA11HE3/73 equivalent, this page delivers verified electrical specs, automotive reliability context, clamping performance under surge conditions, and direct alternatives for ESD and load-dump protection design.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable high-temperature operation up to +185 °C junction temperature and exhibits low incremental surge resistance with sub-nanosecond response time to transients. It is rated for 400 W peak pulse power per 10/1000 µs waveform at 0.01 % duty cycle and supports repetitive surge events under derated conditions.
The device operates exclusively in unidirectional polarity, with cathode denoted by color band, and meets RoHS 2002/95/EC and WEEE 2002/96/EC. Its 1.5 W steady-state power dissipation and 40 A IFSM (8.3 ms half-sine) support robust front-end protection in automotive 12 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 9.9 V min / 12.1 V max at 1 mA - defines precise voltage threshold where clamping initiates |
| Clamping Voltage VC | 16.2 V max at 24.7 A IPPM - limits downstream IC voltage during 400 W transient |
| Peak Pulse Power PPPM | 400 W (10/1000 µs waveform) - sustains automotive load-dump surges without failure |
| Stand-off Voltage VWM | 8.92 V - ensures no conduction during normal 12 V system operation |
| Junction Temperature Range | –65 °C to +185 °C - enables placement near hot engine compartments |
| AEC-Q101 Qualified | Yes - validated for automotive powertrain, body control, and ADAS modules |
| Package | DO-204AL (DO-41) - industry-standard through-hole mounting with matte tin leads |
Pinout & Package
DO-204AL (DO-41) molded epoxy package with axial leads; cathode indicated by color band. Matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground in unidirectional TVS configuration | Provides low-impedance path to ground during reverse transient events |
| Cathode | Current exit point in forward bias; marked by color band; connected to protected line | Defines polarity-sensitive clamping node - must be placed on line side of protection |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR drift < ±5 % over 1000 hrs at 150 °C - critical for long-life automotive modules |
| 400 W peak pulse rating (10/1000 µs) | Withstands ISO 7637-2 Pulse 5a (load dump) up to 60 V for 400 ms without degradation |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream MOSFETs and CAN transceivers |
| AEC-Q101 qualified & RoHS compliant | Validated for automotive production use with full traceability and zero exemptions |
| 185 °C max junction temperature | Permits placement within 10 mm of 120 °C PCB zones in engine control units |
Applications
| Engine Control Unit (ECU) Power Input | Automotive CAN Bus Line Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of gasoline/diesel ECUs against alternator load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor. Use Value: Clamps transients to ≤16.2 V, preventing damage to 3.3 V/5 V LDOs and microcontrollers rated for 18 V absolute max. |
Use Scenario: Shields high-speed CAN H/L differential pair from ESD (IEC 61000-4-2) and board-level surges. IC Role / Device Role / Timing Role: Discrete TVS mounted directly at connector entry point, before common-mode choke. Use Value: Sub-ns response ensures clamping occurs before CAN transceiver input stages are overstressed. |
| Body Control Module (BCM) Window Lift Circuit | ADAS Camera Power Supply Protection |
Use Scenario: Guards motor driver FETs and MCU GPIOs in window lift subsystems subject to relay bounce and cable harness inductance. IC Role / Device Role / Timing Role: TVS placed across motor terminals and on MCU sense lines. Use Value: 40 A IFSM rating handles repeated 8.3 ms inrush surges without parametric shift. |
Use Scenario: Secures 5 V or 12 V camera module input against ignition noise and jump-start transients in rear-view or surround-view systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converter and image sensor. Use Value: 185 °C TJ rating allows integration into sealed camera housings exposed to solar loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A-E3/5AT | Surface-mount SMA package; 11.1 V VBR min; 18.2 V VC at 21.9 A; 400 W rating | Lacks AEC-Q101 qualification; not automotive-qualified for powertrain use | Select for cost-sensitive consumer or industrial boards where reflow compatibility is prioritized over automotive validation |
| 1.5KE11CA | Through-hole DO-201AE; bidirectional; 9.4 V VWM; 18.2 V VC at 21.9 A; 1500 W rating | Bidirectional operation unsuitable for DC-biased rails; higher clamping voltage increases risk to downstream ICs | Use only where AC-coupled signal lines require symmetrical clamping; avoid on 12 V DC power rails |
Compared with SMAJ11A-E3/5AT and 1.5KE11CA, the P4KA11HE3/73 provides AEC-Q101 assurance, tighter VC (16.2 V vs. ≥18.2 V), and optimized unidirectional behavior for 12 V automotive power domains - making it the preferred choice for ECU, BCM, and ADAS power rail protection.
Availability
P4KA11HE3/73 is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera systems requiring stable component supply with automotive-grade reliability and full traceability.
Supply support for P4KA11HE3/73 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The P4KA11HE3/73 belongs to Vishay's automotive TVS family engineered specifically for ISO 7637-2 and ISO 16750-2 compliance in 12 V vehicle electrical systems, targeting ECU, BCM, and infotainment power rail protection.
FAQ
What is the clamping voltage of the P4KA11HE3/73 under peak surge conditions?
The P4KA11HE3/73 has a maximum clamping voltage (VC) of 16.2 V at 24.7 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 16.2 V during a 400 W transient event. The P4KA11HE3/73 maintains this clamping performance across its full operating temperature range.
Is the P4KA11HE3/73 suitable for automotive powertrain applications?
Yes, the P4KA11HE3/73 is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for engine control units, transmission control modules, and other powertrain electronics. Its DO-204AL package, matte tin leads, and PAR® construction ensure reliability under thermal cycling and vibration. The P4KA11HE3/73 meets all requirements for ISO 7637-2 Pulse 5a (load dump) protection in 12 V systems.
What is the difference between P4KA11HE3/73 and P4KA11AHE3/73?
The P4KA11HE3/73 has a breakdown voltage range of 9.9 V to 12.1 V, while the P4KA11AHE3/73 is a tighter-tolerance variant with 10.5 V to 11.6 V VBR. Both share identical package, power rating (400 W), clamping voltage (16.2 V / 15.6 V), and AEC-Q101 qualification. The P4KA11HE3/73 offers broader VBR tolerance for general-purpose automotive use; the 'A' suffix denotes enhanced binning for designs requiring tighter voltage control.
Can the P4KA11HE3/73 be used in bidirectional signal line protection?
No - the P4KA11HE3/73 is unidirectional only, with cathode marked by a color band. It is designed for DC-biased rails like 12 V power inputs, not AC or differential signal lines. For bidirectional protection (e.g., RS-485, CAN), a symmetric TVS such as SMBJ11CA or an integrated dual-rail solution is required. Using the P4KA11HE3/73 on bidirectional lines risks forward conduction and malfunction.
What is the lead finish and soldering compatibility of the P4KA11HE3/73?
The P4KA11HE3/73 features matte tin-plated leads compliant with J-STD-002 and JESD22-B102 for reliable solder wetting, and passes JESD201 Class 2 whisker testing. It supports wave soldering at 260 °C for 40 seconds and is compatible with standard SnPb and lead-free reflow profiles. The DO-204AL package allows manual or automated through-hole assembly without special tooling.
P4KA11HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.92V
- Voltage - Breakdown (Min):
- 9.9V
- Voltage - Clamping (Max) @ Ipp:
- 16.2V
- Current - Peak Pulse (10/1000µs):
- 24.7A
- 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)
P4KA11HE3/73 FAQ
1.How can I place an order for P4KA11HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA11HE3/73 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 P4KA11HE3/73 reliable?
The price and inventory of P4KA11HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA11HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA11HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA11HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA11HE3/73?
P4KA11HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA11HE3/73 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 P4KA11HE3/73?
For technical support, including P4KA11HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA11HE3/73 requirements.
6.How does Aetrix verify that P4KA11HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA11HE3/73 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 P4KA11HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA11HE3/73?
All P4KA11HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA11HE3/73, 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 P4KA11HE3/73 part is unused and in its original packaging.
Return procedure for P4KA11HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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