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Vishay General Semiconductor - Diodes Division P4KA8.2AHE3/54
- Part No.:
- P4KA8.2AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA8.2AHE3/54.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,131
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Product details
Overview
P4KA8.2AHE3/54 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, with 7.79 V to 8.61 V breakdown voltage (VBR), 12.1 V clamping voltage (VC) at 200 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - used for protecting MOSFETs and sensor signal lines in automotive powertrain control units.
For engineers reviewing the P4KA8.2AHE3/54 datasheet, P4KA8.2AHE3/54 pinout, P4KA8.2AHE3/54 application, or P4KA8.2AHE3/54 equivalent, key selection criteria include AEC-Q101 qualification, 185 °C max junction temperature, low 0.065 %/°C VBR temperature coefficient, and RoHS-compliant HE3 high-reliability termination.
Technical Context
The P4KA8.2AHE3/54 operates as a unidirectional avalanche diode with patented PAR® construction, delivering precise clamping during fast transients induced by inductive load switching. Its 10/1000 µs surge response and 1.0 µA max reverse leakage at 7.02 V stand-off voltage ensure stable protection in 12 V automotive systems.
Designed for high-temperature reliability, it sustains operation from –65 °C to +185 °C junction temperature and supports repetitive 0.01 % duty cycle surges. The device features matte tin-plated leads compliant with J-STD-002 and JESD22-B102, and passes JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V - defines precise avalanche initiation window for consistent clamping onset |
| VC @ IPPM | 12.1 V at 200 A - limits downstream voltage stress during worst-case 10/1000 µs surge |
| PPPM | 400 W - enables robust suppression of ISO 7637-2 Pulse 1/2a/5a transients without failure |
| IFSM | 40 A - withstands 8.3 ms half-sine surge from alternator load dump events |
| TJ max. | +185 °C - supports under-hood placement in engine control modules and transmission ECUs |
| VWM | 7.02 V - ensures reliable blocking of 12 V nominal system voltage with margin |
| Temp. Coeff. VBR | 0.065 %/°C - minimizes drift across automotive temperature range, preserving clamping accuracy |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with UL 94 V-0 rating; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected line ground or low-side return path in unidirectional clamp configuration |
| Cathode | Current exit point during reverse avalanche | Connected to protected signal/power line; color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables uniform voltage distribution across junction, reducing localized thermal runaway risk during repeated surges |
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TCT, and ESD HBM ≥ 8 kV |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (< 1 ns), improving IC-level protection fidelity |
| RoHS-compliant HE3 termination | Matte tin plating meets JESD201 Class 2 whisker resistance, ensuring long-term solder joint integrity |
| 10/1000 µs waveform capability | Matches ISO 7637-2 standard test profile for automotive electrical disturbances |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Clamp |
|---|---|
Use Scenario: Suppresses load-dump transients on 12 V supply rail feeding microcontroller and driver ICs in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor, clamping surges before they reach LDOs and MCU VCC. Use Value: Withstands 40 A IFSM and maintains 12.1 V clamping at 200 A, preventing brownout or latch-up in safety-critical engine timing circuits. | Use Scenario: Protects analog outputs of pressure/temperature sensors connected to body control modules against ISO 16750-2 coupled transients. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on sensor output line, referenced to local ground with minimal loading. Use Value: 7.02 V stand-off voltage avoids false triggering during normal 5 V sensor operation while clamping 100 V spikes within 1 ns response time. |
| Transmission Control Module (TCM) Solenoid Drive Protection | ADAS Camera Power Rail Clamp |
Use Scenario: Shields H-bridge gate drivers and current sense amplifiers from inductive kickback when 12 V solenoids de-energize in automatic transmission valve bodies. IC Role / Device Role / Timing Role: Fast-response TVS mounted at solenoid connector interface, shunting energy directly to chassis ground. Use Value: 400 W peak pulse power and 0.065 %/°C VBR stability ensure repeatable clamping across –40 °C to +150 °C ambient, critical for shift reliability. | Use Scenario: Guards 12 V input of image signal processor (ISP) and serializer ICs in rear-view or surround-view camera modules exposed to ESD and board-level noise. IC Role / Device Role / Timing Role: Primary overvoltage protector upstream of DC/DC converter, sized to absorb multiple 10/1000 µs pulses without degradation. Use Value: AEC-Q101 qualification and 185 °C TJ max. support continuous operation inside sealed camera housings near exhaust or brake components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Lower VBR (7.2–8.0 V), same DO-214AC package but surface-mount; 300 W PPPM | Requires PCB rework for SMT vs. through-hole; less suitable for high-vibration under-hood mounting | Select for space-constrained PCBs where automated assembly is prioritized over mechanical robustness |
| P6KE8.2A | Same VBR range (7.38–9.02 V), higher 600 W PPPM, DO-15 package with longer leads and lower thermal resistance | Better suited for higher-energy transients (e.g., ISO 7637-2 Pulse 5b); larger footprint may conflict with dense layouts | Select when system-level testing reveals margin shortfall in 400 W rating or when extended lead length aids thermal relief |
Compared with SMAJ8.0A and P6KE8.2A, the P4KA8.2AHE3/54 offers optimal balance of AEC-Q101 compliance, through-hole mechanical stability, and precise 7.79–8.61 V clamping for 12 V automotive domains - making it preferred for production ECUs where qualification traceability and vibration resilience are mandatory.
Availability
P4KA8.2AHE3/54 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, ADAS camera power supplies, and body electronics requiring stable component supply with full automotive qualification traceability.
Supply support for P4KA8.2AHE3/54 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, high-temperature performance, and automotive qualification.
The P4KA8.2AHE3/54 belongs to Vishay's automotive TVS diode family engineered specifically for ISO 7637-2 and ISO 16750-2 compliance in powertrain and chassis control systems - targeting robust transient immunity without derating at elevated temperatures.
FAQ
What is the exact breakdown voltage range for P4KA8.2AHE3/54?
The P4KA8.2AHE3/54 has a guaranteed breakdown voltage (VBR) range of 7.79 V to 8.61 V at 10 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures predictable clamping behavior in 12 V automotive systems and distinguishes it from the non-A variant (P4KA8.2) which specifies 7.38–9.02 V. The P4KA8.2AHE3/54's VBR is validated across temperature and production lots per AEC-Q101 requirements.
Is P4KA8.2AHE3/54 suitable for bidirectional transient protection?
No, the P4KA8.2AHE3/54 is unidirectional only, as confirmed in the Vishay datasheet Document Number 88364. It protects against positive-going transients on a line referenced to ground and must be installed with cathode toward the protected circuit. For bidirectional protection, separate devices or a dedicated bidirectional TVS such as SMBJ8.0CA would be required - the P4KA8.2AHE3/54 does not support reverse-polarity surge suppression.
What does the "HE3/54" suffix indicate in P4KA8.2AHE3/54?
The "HE3" suffix denotes RoHS-compliant, high-reliability, automotive-grade construction meeting AEC-Q101, with matte tin-plated leads passing JESD201 Class 2 whisker testing. The "/54" indicates packaging in 13-inch paper tape and reel, with 5500 units per reel - a standard logistics code used by Vishay for automated SMT-compatible handling despite the P4KA8.2AHE3/54 being a through-hole part.
How does P4KA8.2AHE3/54 perform under high-temperature operating conditions?
The P4KA8.2AHE3/54 is rated for continuous operation up to +185 °C junction temperature and exhibits only 0.065 %/°C VBR drift, ensuring stable clamping voltage across under-hood environments. Derating curves in the datasheet confirm >80 % of its 400 W PPPM remains usable at TJ = 125 °C, making it suitable for placement near power MOSFETs or solenoid drivers without thermal compromise.
Can P4KA8.2AHE3/54 replace P4KA8.2 in existing designs?
Yes, the P4KA8.2AHE3/54 is a direct functional upgrade to P4KA8.2, offering tighter VBR (7.79–8.61 V vs. 7.38–9.02 V), AEC-Q101 qualification, and HE3 high-reliability termination. No PCB changes are needed - both share identical DO-204AL package, pinout, and mechanical dimensions. However, design validation should confirm that the narrower VBR window aligns with system-level surge margin requirements.
P4KA8.2AHE3/54 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 33.1A
- 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)
P4KA8.2AHE3/54 FAQ
1.How can I place an order for P4KA8.2AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA8.2AHE3/54 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 P4KA8.2AHE3/54 reliable?
The price and inventory of P4KA8.2AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA8.2AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KA8.2AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA8.2AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA8.2AHE3/54?
P4KA8.2AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA8.2AHE3/54 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 P4KA8.2AHE3/54?
For technical support, including P4KA8.2AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA8.2AHE3/54 requirements.
6.How does Aetrix verify that P4KA8.2AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KA8.2AHE3/54 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 P4KA8.2AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KA8.2AHE3/54?
All P4KA8.2AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA8.2AHE3/54, 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 P4KA8.2AHE3/54 part is unused and in its original packaging.
Return procedure for P4KA8.2AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KA8.2AHE3/54 Tags
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