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Vishay General Semiconductor - Diodes Division P4KA8.2AHE3/73
- Part No.:
- P4KA8.2AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KA8.2AHE3/73.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,519
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Product details
Overview
P4KA8.2AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, featuring 7.79 V to 8.61 V breakdown voltage (VBR), 12.1 V clamping voltage (VC) at 200 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for under-hood electronics protection.
For engineers reviewing the P4KA8.2AHE3/73 datasheet, P4KA8.2AHE3/73 pinout, P4KA8.2AHE3/73 application, or P4KA8.2AHE3/73 equivalent, this page delivers verified electrical specs, thermal derating behavior, clamping performance under surge, RoHS-compliant packaging, and automotive reliability validation - all critical for ECU, sensor interface, and power rail transient suppression design.
Technical Context
The P4KA8.2AHE3/73 employs Vishay's patented PAR® construction for low incremental surge resistance and stable clamping under repetitive transients. It operates with a 10/1000 µs waveform, 0.01% duty cycle, and supports junction temperatures up to +185 °C.
Its unidirectional polarity enables DC-biased line protection; the 7.02 V stand-off voltage (VWM) ensures reliable blocking below breakdown, while 50 µA max reverse leakage at VWM minimizes standby power loss in battery-sensitive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 7.79 V min / 8.61 V max at 10 mA - defines precise conduction onset for predictable overvoltage triggering |
| Clamping Voltage VC | 12.1 V max at 200 A IPPM - limits downstream voltage stress during 400 W surge events |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump and inductive switching |
| Stand-off Voltage VWM | 7.02 V - ensures no conduction during normal 5–6 V rail operation in 12 V automotive systems |
| Operating Temperature | -65 °C to +185 °C - validated for engine bay placement per AEC-Q101 stress testing |
| Surge Current IPPM | 200 A (10/1000 µs) - withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and SAE J1113-11 waveforms |
| Reverse Leakage ID | 50 µA max at VWM, TJ = 150 °C - maintains low quiescent current in hot, always-on modules |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, molded epoxy case with UL 94 V-0 rating; matte tin-plated leads compliant with J-STD-002 and JESD22-B102; 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 TVS configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected signal/power line; color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Reduces incremental surge resistance for tighter clamping and lower let-through energy |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock |
| 40 s solder dip at 260 °C | Ensures robustness during lead-free reflow and manual repair without delamination or parameter shift |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in long-life automotive modules operating >15 years |
| RoHS & WEEE compliant | Meets EU regulatory requirements for hazardous substances and end-of-life electronics handling |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Sensor Signal Lines |
|---|---|
Use Scenario: Protects 12 V supply rail of engine control units against ISO 7637-2 load dump (Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transient spikes above 12 V while remaining non-conductive during nominal operation. Use Value: Prevents latch-up or permanent damage to microcontrollers and power management ICs rated for ≤16 V absolute maximum. |
Use Scenario: Shields analog outputs of pressure, temperature, and position sensors from inductive kickback in chassis harnesses. IC Role / Device Role / Timing Role: Fast-response clamping element placed at connector interface to limit voltage excursion on 0–5 V or 0.5–4.5 V ratiometric signals. Use Value: Maintains signal integrity and ADC accuracy by holding line voltage ≤12.1 V during 200 A surges, avoiding false readings or sensor reset. |
| Body Control Module (BCM) LIN Bus | Infotainment System USB/UART Lines |
Use Scenario: Guards LIN transceiver inputs against ESD and coupled transients from adjacent 12 V circuits in door modules. IC Role / Device Role / Timing Role: Standoff voltage (7.02 V) exceeds LIN bus's 12 V VCC but blocks below 7.79 V, enabling clean 0–12 V signaling. Use Value: Eliminates need for additional series impedance; clamps within 1 ns to preserve LIN timing margins and bit error rate. |
Use Scenario: Suppresses coupling noise from DC-DC converters onto low-speed USB 2.0 or UART lines in head units. IC Role / Device Role / Timing Role: Low capacitance (<50 pF at zero bias) avoids signal rise/fall time degradation on 480 Mbps or 3 Mbps links. Use Value: Enables direct placement at board edge without equalization or retiming, reducing BOM count and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Lower VBR (7.22–7.98 V), same DO-214AC package, 400 W rating, but not AEC-Q101 qualified | Limited to industrial/commercial environments; lacks automotive temperature cycling and humidity bias validation | Select when cost sensitivity outweighs automotive qualification requirements and ambient temperature stays <125 °C |
| 1.5KE8.2A | Higher VC (13.4 V), same VBR range, larger DO-201AD package, 1500 W rating, non-automotive grade | Used in AC mains input stages or high-power industrial SMPS where physical size and higher surge margin are acceptable | Choose only if PCB space allows larger footprint and system-level surge immunity requires >400 W capability |
Compared with SMAJ8.0A and 1.5KE8.2A, the P4KA8.2AHE3/73 uniquely combines AEC-Q101 qualification, DO-41 form factor, and tight 7.79–8.61 V VBR tolerance - making it the only option for space-constrained, high-reliability automotive signal and power line protection.
Availability
P4KA8.2AHE3/73 is available at Aetrix Electronics and suitable for engine control units, body control modules, automotive sensor interfaces, and infotainment subsystems requiring stable component supply across extended production lifecycles.
Supply support for P4KA8.2AHE3/73 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 with emphasis on reliability, power handling, and application-specific optimization for automotive, industrial, and computing markets.
The P4KA8.2AHE3/73 belongs to Vishay's automotive TVS diode family engineered specifically for under-hood transient suppression - balancing low clamping voltage, high temperature stability, and AEC-Q101 compliance in compact axial packages.
FAQ
What is the clamping voltage of the P4KA8.2AHE3/73 at its rated peak pulse current?
The P4KA8.2AHE3/73 has a maximum clamping voltage (VC) of 12.1 V at 200 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 12.1 V during surge events. The P4KA8.2AHE3/73 achieves this with low incremental resistance enabled by its PAR® construction.
Is the P4KA8.2AHE3/73 suitable for 12 V automotive power rail protection?
Yes, the P4KA8.2AHE3/73 is explicitly designed for 12 V automotive systems. Its 7.02 V stand-off voltage (VWM) prevents conduction during normal operation, while its 7.79–8.61 V breakdown range and 12.1 V clamping align with ISO 7637-2 load dump and pulse test requirements. The P4KA8.2AHE3/73 is AEC-Q101 qualified and rated for 185 °C junction temperature.
Does the P4KA8.2AHE3/73 have bidirectional polarity?
No, the P4KA8.2AHE3/73 is unidirectional only, as confirmed in the Vishay datasheet Document Number 88364. It conducts in reverse bias during overvoltage events and blocks forward current like a standard diode. Polarity is marked by a cathode band; using it in bidirectional configurations requires pairing with another diode or selecting a dedicated bidirectional variant.
What does the "HE3" suffix indicate in P4KA8.2AHE3/73?
"HE3" denotes Vishay's high-reliability, RoHS-compliant, automotive-grade construction: matte tin-plated leads qualified to J-STD-002 and JESD22-B102, JESD201 Class 2 whisker resistance, and full AEC-Q101 qualification. The P4KA8.2AHE3/73 meets these requirements, distinguishing it from commercial-grade variants lacking automotive validation.
How does the P4KA8.2AHE3/73 compare to the P4KA8.2HE3 variant?
The P4KA8.2AHE3/73 offers tighter breakdown voltage tolerance (7.79–8.61 V) versus P4KA8.2HE3 (7.38–9.02 V), resulting in more consistent clamping onset and reduced risk of premature conduction. Both share identical package, power rating, and AEC-Q101 qualification, but the "A" suffix in P4KA8.2AHE3/73 reflects enhanced VBR binning for critical automotive applications.
P4KA8.2AHE3/73 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):
- 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)
P4KA8.2AHE3/73 FAQ
1.How can I place an order for P4KA8.2AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KA8.2AHE3/73 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 P4KA8.2AHE3/73 reliable?
The price and inventory of P4KA8.2AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KA8.2AHE3/73 is usually 5 days.
3.What payment methods are accepted for P4KA8.2AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KA8.2AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KA8.2AHE3/73?
P4KA8.2AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KA8.2AHE3/73 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 P4KA8.2AHE3/73?
For technical support, including P4KA8.2AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KA8.2AHE3/73 requirements.
6.How does Aetrix verify that P4KA8.2AHE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KA8.2AHE3/73 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 P4KA8.2AHE3/73 meets industry standards.
7.What is the process for return or replacement of P4KA8.2AHE3/73?
All P4KA8.2AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KA8.2AHE3/73, 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 P4KA8.2AHE3/73 part is unused and in its original packaging.
Return procedure for P4KA8.2AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KA8.2AHE3/73 Tags
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