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Vishay General Semiconductor - Diodes Division P4KA30HE3/73
- Part No.:
- P4KA30HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA30HE3/73.pdf
- Description:
- TVS DIODE 24.3VWM 43.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,174
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Product details
Overview
P4KA30HE3/73 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), 27.0–33.0 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 P4KA30HE3/73 datasheet, P4KA30HE3/73 pinout, P4KA30HE3/73 application, or P4KA30HE3/73 equivalent, key selection criteria include clamping voltage (43.5 V at 9.2 A), AEC-Q101 qualification, RoHS-compliant HE3 suffix with JESD201 Class 2 whisker resistance, and 1.5 W steady-state power dissipation on infinite heatsink.
Technical Context
This TVS diode uses patented PAR® construction to deliver low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and load-dump transients per ISO 7637-2 and IEC 61000-4-5. Its unidirectional polarity and cathode band marking ensure correct orientation in series protection configurations.
Designed for high-reliability automotive environments, the P4KA30HE3/73 operates across –65 °C to +185 °C junction temperature range and maintains stable VBR with 0.097 %/°C temperature coefficient. It meets UL 94 V-0 flammability rating and is rated for solder dip at 260 °C for 40 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 400 W - withstands automotive load-dump surges without failure |
| Breakdown Voltage VBR | 27.0–33.0 V at 1.0 mA - defines minimum clamping threshold under transient stress |
| Clamping Voltage VC | 43.5 V at 9.2 A IPPM - limits downstream voltage during worst-case surge |
| Steady-State Power Dissipation | 1.5 W on infinite heatsink - sets thermal design margin for continuous leakage handling |
| Junction Temperature Range | –65 °C to +185 °C - supports under-hood placement in modern engine control units |
| AEC-Q101 Qualified | Yes - validated for automotive electronic systems per stress test requirements |
| RoHS & Whisker Rating | RoHS-compliant HE3 suffix; JESD201 Class 2 - ensures long-term reliability in lead-free assembly |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, molded epoxy case with matte tin-plated leads. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground | Provides low-impedance path to ground during reverse-transient clamping |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., 24 V rail) | Marked with band; reverse-biased during normal operation; conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables uniform current distribution and consistent clamping performance across surge cycles |
| 400 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12 V and 24 V systems |
| Low incremental surge resistance | Minimizes VC overshoot and improves energy absorption efficiency during fast transients |
| Fast response time | Sub-nanosecond turn-on ensures protection before sensitive downstream components are stressed |
| High-temperature stability | 0.097 %/°C VBR coefficient enables predictable clamping across full automotive temperature range |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 24 V supply input of diesel ECU against alternator load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor. Use Value: Clamps surge to ≤43.5 V within nanoseconds, preventing damage to DC/DC controllers and microcontrollers. | Use Scenario: Shields LIN bus or analog sensor outputs (e.g., pressure, temperature) from coupled noise in chassis harnesses. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at VWM) placed at connector interface. Use Value: Maintains signal integrity while suppressing ±30 kV ESD per IEC 61000-4-2 without distorting low-speed data waveforms. |
| Body Control Module (BCM) Relay Drive Circuit | Electric Power Steering (EPS) Motor Driver Stage |
Use Scenario: Suppresses inductive kickback from 12 V relay coils driving door locks or lighting loads. IC Role / Device Role / Timing Role: TVS mounted across relay coil terminals, oriented to conduct only during flyback event. Use Value: Limits reverse voltage spike to <45 V, eliminating need for snubber RC networks and reducing BOM count. | Use Scenario: Guards half-bridge gate drivers from Miller-induced shoot-through during high-di/dt motor commutation. IC Role / Device Role / Timing Role: TVS placed between high-side gate and source, referenced to local power rail. Use Value: Absorbs >95 % of transient energy from parasitic inductance, preserving MOSFET safe operating area (SOA). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | Lower peak pulse power (400 W same), but lower clamping voltage (48.4 V at 8.3 A); SMA package (surface-mount) | Preferred for space-constrained PCBs where reflow compatibility is required; not axial-leaded | Select when automated assembly and footprint density outweigh axial-lead serviceability needs |
| 1.5KE30A | Same DO-41 package and VBR range, but non-automotive grade; no AEC-Q101 or HE3 whisker rating | Suitable for industrial or consumer applications with less stringent reliability requirements | Choose only if automotive qualification and long-term whisker resistance are not mandatory |
Compared with SMAJ30A-E3/57T and 1.5KE30A, the P4KA30HE3/73 uniquely combines AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and proven DO-41 mechanical robustness for under-hood deployment-making it the default choice for Tier 1 automotive power electronics where field failure risk must be minimized.
Availability
P4KA30HE3/73 is available at Aetrix Electronics and suitable for automotive powertrain control, body electronics, and electric power steering systems requiring stable component supply across extended product lifecycles.
Supply support for P4KA30HE3/73 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, TVS devices, and optoelectronics with emphasis on reliability and automotive qualification.
The P4KA30HE3/73 belongs to Vishay's automotive-grade TVS diode family engineered specifically for harsh-environment transient suppression in 12 V and 24 V vehicle electrical systems, supporting AEC-Q101 compliance and long-term under-hood operation.
FAQ
What is the clamping voltage of the P4KA30HE3/73 at its rated peak pulse current?
The P4KA30HE3/73 has a maximum clamping voltage (VC) of 43.5 V at 9.2 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and ensures downstream components remain below their absolute maximum voltage ratings during standardized surge events. The P4KA30HE3/73 achieves this clamping level consistently due to its patented PAR® construction and low incremental surge resistance.
Is the P4KA30HE3/73 qualified for automotive use?
Yes, the P4KA30HE3/73 is AEC-Q101 qualified and designated as high-reliability/automotive grade (Base P/NHE3). It undergoes stress testing including temperature cycling, humidity bias, and accelerated life testing per AEC-Q101 requirements. The HE3 suffix further confirms compliance with JESD201 Class 2 whisker resistance and RoHS Directive 2002/95/EC, making the P4KA30HE3/73 suitable for safety-critical automotive subsystems.
What is the package type and lead finish of the P4KA30HE3/73?
The P4KA30HE3/73 uses the DO-204AL (DO-41) axial-leaded package with molded epoxy housing meeting UL 94 V-0 flammability rating. Its leads are matte tin plated and solderable per J-STD-002 and JESD22-B102 standards. The cathode is marked with a color band, and the device supports solder dip at 260 °C for 40 seconds-fully compatible with lead-free reflow and wave soldering processes used in automotive manufacturing.
How does the P4KA30HE3/73 differ from the P4KA30A variant?
The P4KA30HE3/73 has a breakdown voltage range of 27.0–33.0 V, while the P4KA30A variant tightens this to 28.5–31.5 V. Both share identical power ratings (400 W PPPM), clamping voltage (41.4 V for P4KA30A vs. 43.5 V for P4KA30HE3/73), and automotive qualification. The P4KA30HE3/73 is the standard version optimized for broad design margin; the P4KA30A offers tighter VBR tolerance for applications requiring precise clamping threshold control.
What is the maximum junction temperature rating for the P4KA30HE3/73?
The P4KA30HE3/73 has a maximum junction temperature (TJ) rating of +185 °C and a storage temperature range of –65 °C to +185 °C. This extended thermal capability allows direct placement near heat sources such as power relays or motor drivers in engine compartments. Derating curves (Fig. 2 and Fig. 5 in datasheet 88364) define allowable power reduction above 25 °C ambient, ensuring safe operation of the P4KA30HE3/73 across full automotive environmental profiles.
P4KA30HE3/73 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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 9.2A
- 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)
P4KA30HE3/73 FAQ
1.How can I place an order for P4KA30HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA30HE3/73 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 P4KA30HE3/73 reliable?
The price and inventory of P4KA30HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA30HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA30HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA30HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA30HE3/73?
P4KA30HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA30HE3/73 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 P4KA30HE3/73?
For technical support, including P4KA30HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA30HE3/73 requirements.
6.How does Aetrix verify that P4KA30HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA30HE3/73 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 P4KA30HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA30HE3/73?
All P4KA30HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA30HE3/73, 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 P4KA30HE3/73 part is unused and in its original packaging.
Return procedure for P4KA30HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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