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Vishay General Semiconductor - Diodes Division P4KA24HE3/73
- Part No.:
- P4KA24HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA24HE3/73.pdf
- Description:
- TVS DIODE 19.4VWM 34.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,294
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Product details
Overview
P4KA24HE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, rated for 400 W peak pulse power (10/1000 µs), 21.6–26.4 V breakdown voltage, and 185 °C max junction temperature. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive powertrain and body electronics.
For engineers reviewing the P4KA24HE3/73 datasheet, P4KA24HE3/73 pinout, P4KA24HE3/73 application, or P4KA24HE3/73 equivalent, key selection criteria include clamping voltage (34.2 V at 11.5 A), AEC-Q101 qualification, RoHS-compliant HE3 suffix with JESD201 Class 2 whisker resistance, and 1.0 µA max reverse leakage at 19.4 V stand-off voltage.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable clamping under high-temperature stress (up to 185 °C TJ), with low incremental surge resistance and fast response time to sub-microsecond transients. Its unidirectional polarity and 10/1000 µs waveform rating align with ANSI/IEEE C62.35 standards for automotive surge immunity.
The device operates within -65 °C to +185 °C junction range and features matte tin-plated leads compliant with J-STD-002 and JESD22-B102. The DO-204AL molded epoxy case meets UL 94 V-0 flammability rating and supports solder dip at 260 °C for 40 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 21.6–26.4 V at 1 mA - defines minimum voltage at which clamping initiates under transient stress |
| Clamping Voltage (VC) | 34.2 V at 11.5 A peak pulse - maximum voltage seen by protected circuit during 10/1000 µs surge |
| Peak Pulse Power (PPPM) | 400 W (10/1000 µs) - energy-handling capacity for repetitive surge events at 0.01% duty cycle |
| Stand-off Voltage (VWM) | 19.4 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| Junction Temperature Range | -65 °C to +185 °C - enables operation in under-hood automotive environments without derating |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
| RoHS & Whisker Compliance | HE3 suffix: RoHS 2002/95/EC compliant and JESD201 Class 2 whisker resistant |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, molded epoxy case with cathode band marking. Dimensions: 2.7 mm diameter × 5.2 mm body length, 9.5 mm lead length minimum.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Current exit terminal; marked with color band | Connected to protected line (e.g., CAN_H, LIN, sensor supply); clamps to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across temperature and lifetime stress |
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| AEC-Q101 qualified (automotive grade) | Validated for use in powertrain control modules, body ECUs, and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage exposure to downstream silicon while maintaining margin above VWM |
| Matte tin-plated leads | Ensures reliable solder wetting and intermetallic formation per J-STD-002/JESD22-B102 |
Applications
| Automotive Powertrain ECUs | Body Control Modules (BCM) |
|---|---|
Use Scenario: Protecting 12 V supply inputs of engine control units from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor. Use Value: Clamps transients up to 34.2 V while sustaining 185 °C junction temperature during extended under-hood operation. | Use Scenario: Safeguarding LIN bus transceivers and door module microcontrollers from ESD and inductive kickback. IC Role / Device Role / Timing Role: Cathode tied to LIN line, anode grounded; responds within nanoseconds to >1 kV ESD events. Use Value: 1.0 µA leakage at 19.4 V ensures minimal impact on LIN bus biasing and sleep current budgets. |
| ADAS Camera Sensor Interfaces | Electric Power Steering (EPS) Motor Drivers |
Use Scenario: Shielding FPD-Link III or GMSL serial data lines from cable discharge and board-level surges. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed adjacent to connector, cathode to data line. Use Value: 34.2 V clamping prevents latch-up in serializer/deserializer ICs while preserving signal integrity up to 3 Gbps. | Use Scenario: Suppressing flyback voltage spikes from H-bridge MOSFETs driving EPS assist motors. IC Role / Device Role / Timing Role: Mounted across motor terminals or DC bus, absorbing 40 A IFSM surge currents. Use Value: 400 W pulse rating and 11.5 A IPPM capability handle repeated PWM-induced transients without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-E3/52 (Vishay) | Surface-mount SMB package; 24 V nominal VBR; 600 W PPPM; bidirectional option available | Requires PCB re-layout; better suited for space-constrained modules with automated assembly | Select when SMT placement, higher pulse power, or bidirectional protection is required |
| 1.5KE24A (ON Semiconductor) | DO-201 package; same 24 V VBR range; 1500 W PPPM; non-AEC-Q101; 175 °C TJ max | Lacks automotive qualification; suitable for industrial/commercial designs with less stringent reliability requirements | Select for cost-sensitive non-automotive applications where AEC-Q101 is not mandated |
Compared with SMBJ24A-E3/52 and 1.5KE24A, the P4KA24HE3/73 offers AEC-Q101 validation, 185 °C junction rating, and HE3 whisker-resistant leads-making it uniquely suited for under-hood automotive deployments where thermal stability and long-term metallurgical reliability are critical.
Availability
P4KA24HE3/73 is available at Aetrix Electronics and suitable for automotive powertrain ECUs, body control modules, ADAS camera interfaces, and electric power steering systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for P4KA24HE3/73 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, high-temperature, and automotive-qualified components.
The P4KA24HE3/73 belongs to Vishay's automotive TVS diode family designed specifically for robust transient suppression in harsh-environment vehicle subsystems-including engine management, chassis control, and advanced driver assistance systems.
FAQ
What is the breakdown voltage tolerance for P4KA24HE3/73?
The P4KA24HE3/73 has a specified breakdown voltage (VBR) range of 21.6 V to 26.4 V at 1 mA test current, representing ±10% tolerance around the nominal 24 V rating. This tolerance is verified per ANSI/IEEE C62.35 and maintained across the full -65 °C to +185 °C operating junction temperature range due to its patented PAR® construction.
Is P4KA24HE3/73 suitable for bidirectional transient protection?
No, the P4KA24HE3/73 is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts in reverse bias during overvoltage events but blocks forward current beyond ~3.5 V. For bidirectional protection, engineers must select a designated bidirectional variant such as P4SMA24CA or SMBJ24CA, not the P4KA24HE3/73.
Does P4KA24HE3/73 meet AEC-Q101 requirements?
Yes, the P4KA24HE3/73 is AEC-Q101 qualified, as confirmed in the "Mechanical Data" section of Vishay document 88364. The HE3 suffix denotes high-reliability automotive grade compliance, including stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge per AEC-Q101 Rev D.
What is the maximum clamping voltage of P4KA24HE3/73 at rated peak pulse current?
The maximum clamping voltage (VC) of P4KA24HE3/73 is 34.2 V at 11.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88364 and represents the worst-case voltage imposed on the protected circuit during surge conditions.
Can P4KA24HE3/73 be used in place of P4KA24AHE3/73?
No-P4KA24HE3/73 and P4KA24AHE3/73 are distinct variants. The "A" suffix indicates tighter VBR tolerance (22.8–25.2 V vs. 21.6–26.4 V) and slightly lower clamping voltage (33.2 V). Substituting them requires verification of system-level margin, especially in designs sensitive to clamping headroom or leakage at VWM.
P4KA24HE3/73 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):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.2V
- Current - Peak Pulse (10/1000µs):
- 11.5A
- 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)
P4KA24HE3/73 FAQ
1.How can I place an order for P4KA24HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA24HE3/73 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 P4KA24HE3/73 reliable?
The price and inventory of P4KA24HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA24HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA24HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA24HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA24HE3/73?
P4KA24HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA24HE3/73 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 P4KA24HE3/73?
For technical support, including P4KA24HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA24HE3/73 requirements.
6.How does Aetrix verify that P4KA24HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA24HE3/73 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 P4KA24HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA24HE3/73?
All P4KA24HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA24HE3/73, 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 P4KA24HE3/73 part is unused and in its original packaging.
Return procedure for P4KA24HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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