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Vishay General Semiconductor - Diodes Division P4KA22AHE3/73
- Part No.:
- P4KA22AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA22AHE3/73.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,976
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Product details
Overview
P4KA22AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, with 20.9 V to 23.1 V breakdown voltage (VBR), 30.6 V clamping voltage (VC) at 13.1 A peak pulse current, and 400 W peak pulse power (10/1000 µs). It is AEC-Q101 qualified and used for protecting MOSFETs and sensor signal lines in automotive powertrain control modules.
For engineers reviewing the P4KA22AHE3/73 datasheet, P4KA22AHE3/73 pinout, P4KA22AHE3/73 application, or P4KA22AHE3/73 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, junction temperature derating above 25 °C, unidirectional polarity requirement, and compliance with automotive reliability standards including JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repetitive surge stress and operates across –65 °C to +185 °C junction temperature. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of inductive switching transients in 12 V automotive systems.
The device is rated for 40 A non-repetitive forward surge (8.3 ms half-sine) and exhibits a 0.092 %/°C temperature coefficient of VBR, ensuring predictable voltage threshold shift over temperature - critical for robust protection in engine control units and body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise reverse breakdown onset for reliable overvoltage triggering |
| VC @ IPPM | 30.6 V at 13.1 A - maximum clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak pulse power handling capability per ANSI/IEEE C62.35, enabling protection against ISO 7637-2 Pulse 1/2a/3a |
| IFSM | 40 A - surge current rating for 8.3 ms half-sine, supporting load-dump immunity in alternator circuits |
| TJ max. | +185 °C - extended junction temperature rating allows placement near high-power components in under-hood ECUs |
| VWM | 18.8 V - maximum working voltage, ensuring no conduction during normal 12 V system operation with margin |
| Temp. Coeff. VBR | 0.092 %/°C - quantifies VBR drift with temperature, enabling accurate thermal design margining |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, molded epoxy case with UL 94 V-0 rating. Cathode indicated by color band. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return in unidirectional TVS configuration |
| Cathode | Protected line connection / clamping node | Connected to signal/power line being protected; clamps to anode when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance and long-term reliability under repetitive surge stress in automotive environments |
| AEC-Q101 qualification | Validates suitability for automotive applications including powertrain, chassis, and body control modules |
| 10/1000 µs waveform rating | Matches ISO 7637-2 test profiles for automotive transient immunity, supporting system-level EMC compliance |
| JESD201 Class 2 whisker resistance | Ensures long-term solder joint integrity in high-vibration, high-temperature under-hood deployments |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive gate drivers |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects ECU 12 V supply rail from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamps voltage spikes to ≤30.6 V before they reach DC/DC converters and microcontrollers. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies while maintaining AEC-Q100 system compliance. | Use Scenario: Shields analog outputs of pressure or temperature sensors connected to CAN or LIN buses. IC Role / Device Role / Timing Role: Fast-response TVS absorbs ESD (IEC 61000-4-2) and coupled noise without distorting low-level mV-range signals. Use Value: Maintains sensor accuracy and avoids false fault reporting in ADAS domain controllers. |
| Body Control Module (BCM) Relay Driver Protection | Electric Power Steering (EPS) Motor Gate Driver Protection |
Use Scenario: Placed across relay coils in BCM to suppress inductive kickback during de-energization. IC Role / Device Role / Timing Role: TVS diverts stored coil energy away from driver ICs, limiting VDS stress on N-channel MOSFET switches. Use Value: Extends MOSFET lifetime and eliminates need for snubber RC networks, reducing BOM count. | Use Scenario: Mounted at H-bridge gate driver outputs to protect against shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Clamps transient overvoltage on gate-source terminals before it exceeds MOSFET VGS rating. Use Value: Prevents unintended turn-on and gate oxide degradation in 48 V EPS inverters operating at >10 kHz PWM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A-E3/52 | DO-214AA package; 22 V nominal VBR; same 400 W PPPM but higher VC = 35.5 V | Suitable for PCB space-constrained designs; lower mounting height but reduced thermal mass vs. DO-41 | Select when board area is limited and thermal dissipation via PCB copper is sufficient |
| 1.5KE22A | DO-201AD package; 22 V nominal VBR; 1500 W PPPM but larger footprint and no AEC-Q101 qualification | Higher power handling for industrial use; lacks automotive reliability validation and whisker resistance | Select only for non-automotive applications where surge amplitude exceeds 400 W requirements |
Compared with SMBJ22A-E3/52 and 1.5KE22A, the P4KA22AHE3/73 delivers automotive-grade reliability in a through-hole package optimized for manual or wave-solder assembly in legacy ECU platforms, with tighter VBR tolerance and lower clamping voltage for improved protection margin.
Availability
P4KA22AHE3/73 is available at Aetrix Electronics and suitable for automotive powertrain control, body electronics, ADAS sensor interfaces, and electric power steering systems requiring stable component supply and long-term lifecycle support.
Supply support for P4KA22AHE3/73 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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade performance.
The P4KA22AHE3/73 belongs to Vishay's automotive TVS diode family designed specifically for AEC-Q101-compliant transient suppression in 12 V and 24 V vehicle electrical systems, targeting robustness under high-temperature and high-humidity under-hood conditions.
FAQ
What is the clamping voltage of the P4KA22AHE3/73 under a 10/1000 µs surge?
The P4KA22AHE3/73 has a maximum clamping voltage (VC) of 30.6 V at 13.1 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 30.6 V during surge events - critical for safeguarding 3.3 V or 5 V logic rails in automotive ECUs. The P4KA22AHE3/73 achieves this with low incremental surge resistance and fast sub-nanosecond response.
Is the P4KA22AHE3/73 qualified for automotive applications?
Yes, the P4KA22AHE3/73 is AEC-Q101 qualified and designated as high-reliability/automotive grade (base P/N HE3 suffix). It meets JESD201 Class 2 whisker resistance, operates from –65 °C to +185 °C junction temperature, and is built using Vishay's patented PAR® construction for stable performance under repetitive surge stress - all validated for use in engine control, body control, and ADAS modules.
What is the difference between P4KA22AHE3/73 and P4KA22HE3/73?
The P4KA22AHE3/73 features a tighter breakdown voltage range (20.9 V to 23.1 V) versus the standard P4KA22HE3/73 (19.8 V to 24.2 V), reflecting improved VBR binning for enhanced consistency in protection threshold. Both share identical package (DO-41), power rating (400 W), and AEC-Q101 qualification, but the "A" suffix denotes tighter parametric control - beneficial in safety-critical applications where clamping predictability is essential.
Can the P4KA22AHE3/73 be used in bidirectional configurations?
No, the P4KA22AHE3/73 is unidirectional only, as explicitly stated in the Vishay datasheet. Its cathode is marked with a color band, and it conducts only in reverse breakdown mode. For bidirectional transient suppression (e.g., AC signal lines or data bus protection), a dedicated bidirectional TVS such as the P4SMA22CA must be selected - the P4KA22AHE3/73 is not suitable for symmetrical surge protection.
What is the maximum operating temperature for the P4KA22AHE3/73?
The P4KA22AHE3/73 has a maximum junction temperature (TJ) of +185 °C and a storage temperature range of –65 °C to +185 °C. This extended rating enables deployment in high-temperature zones such as near engines or power inverters. Derating curves (Fig. 2 and Fig. 5 in datasheet 88364) define allowable power and current reduction above 25 °C ambient, ensuring safe operation in under-hood automotive environments where ambient may reach 125 °C.
P4KA22AHE3/73 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- 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)
P4KA22AHE3/73 FAQ
1.How can I place an order for P4KA22AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA22AHE3/73 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 P4KA22AHE3/73 reliable?
The price and inventory of P4KA22AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA22AHE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA22AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA22AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA22AHE3/73?
P4KA22AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA22AHE3/73 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 P4KA22AHE3/73?
For technical support, including P4KA22AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA22AHE3/73 requirements.
6.How does Aetrix verify that P4KA22AHE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA22AHE3/73 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 P4KA22AHE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA22AHE3/73?
All P4KA22AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA22AHE3/73, 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 P4KA22AHE3/73 part is unused and in its original packaging.
Return procedure for P4KA22AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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