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Vishay General Semiconductor - Diodes Division P4KE82HE3/73
- Part No.:
- P4KE82HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE82HE3/73.pdf
- Description:
- TVS DIODE 66.4VWM 118VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,674
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Product details
Overview
P4KE82HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for circuit-level ESD and surge protection. It features a 70.1 V stand-off voltage (VWM), 77.9–86.1 V breakdown voltage (VBR) at 1 mA, 400 W peak pulse power (10/1000 μs), and clamps transients to ≤113 V at 3.5 A peak pulse current - deployed on power rails and signal lines of automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P4KE82HE3/73 datasheet, P4KE82HE3/73 pinout, P4KE82HE3/73 application, or P4KE82HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 66 °C/W), DO-41 mechanical dimensions, and real-world protection use cases - all aligned with Vishay Document #88365 (Rev. 16-Sep-2021).
Technical Context
This TVS operates as a unidirectional clamping device: reverse-biased during normal operation (leakage <1.0 μA at 70.1 V), then avalanche-conducting within nanoseconds when transient voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
It is rated for 400 W peak pulse power (10/1000 μs waveform, 0.01% duty cycle), derated linearly above 25 °C ambient per Fig. 2, and supports 40 A non-repetitive forward surge (8.3 ms half-sine) - validated per JESD 22-B106 solderability and JESD 201 Class 2 whisker testing (HE3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - guaranteed avalanche initiation range defining clamping threshold |
| VC @ IPPM | ≤113 V at 3.5 A - maximum clamped voltage during 400 W transient, limiting downstream stress |
| PPPM | 400 W - peak surge energy absorption capability with 10/1000 μs waveform |
| RθJL | 66 °C/W - thermal resistance from junction to lead, critical for PCB copper pour design |
| TJ max. | +175 °C - maximum junction temperature enabling under-hood automotive deployment |
| AEC-Q101 | Qualified - certified for automotive electronics per stress test requirements (note: HE3 suffix denotes qualification) |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band on body. Body length: 4.1–5.2 mm, lead diameter: 0.71–0.86 mm, overall length ≥25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND) in unidirectional configuration |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 400 W peak pulse rating (10/1000 μs) | Protects against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and chassis modules per temperature, humidity, and vibration stress tests |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes let-through voltage to preserve margin for downstream 100 V-rated MOSFETs or controllers |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial enclosures and EV battery management systems |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: 12 V/24 V supply lines in engine control units exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping transients before they reach LDOs or microcontrollers. Use Value: Withstands 400 W pulses and 175 °C junction temperature, enabling direct placement near connectors without derating penalties. | Use Scenario: Analog output lines (4–20 mA) from pressure sensors in factory automation PLCs subjected to ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS connected between signal and ground, shunting fast transients (<1 ns rise time) while maintaining <1.0 μA leakage at 24 V nominal. Use Value: Low VC/VBR ratio (113 V / 82 V ≈ 1.38) prevents saturation of op-amp input stages during 1 kV EFT bursts. |
| Consumer Device USB Port Surge Suppression | Telecom Power Feeding Line Protection |
Use Scenario: 5 V USB VBUS line in set-top boxes encountering hot-plug induced transients and nearby lightning-induced coupling. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at USB connector, with cathode tied to VBUS and anode to GND. Use Value: 70.1 V VWM provides ample margin above 5 V ±5%, while 113 V clamping protects USB PHY ICs rated to 120 V abs max. | Use Scenario: -48 V DC feeding lines in telecom base station remote radio units (RRUs), subject to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: TVS installed across feed line and chassis ground, absorbing common-mode surges up to 400 W. Use Value: AEC-Q101 qualification ensures robustness under extended temperature cycling (-40 °C to +85 °C ambient), matching telecom environmental specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | DO-214AA package (SMB), 75 V VWM, 400 W rating, but lower IPPM (32.4 A) and higher VC (121 V) | Surface-mount alternative requiring PCB rework; less suitable for through-hole legacy designs | Select SMBJ75A only if SMT layout and thermal pad availability permit; P4KE82HE3/73 retains advantage in leaded mechanical robustness and serviceability. |
| 1.5KE82A | Same DO-41 package, 70 V VWM, but 1500 W peak power (10/1000 μs) and higher VC (137 V) | Higher-energy surge handling at cost of larger clamping voltage - may exceed downstream IC abs max ratings | Choose 1.5KE82A only for high-energy environments (e.g., utility meter mains input); P4KE82HE3/73 better balances clamping precision and automotive qualification. |
Compared with SMBJ75A and 1.5KE82A, P4KE82HE3/73 uniquely combines AEC-Q101 qualification, DO-41 through-hole compatibility, and tight 113 V clamping - making it optimal for space-constrained automotive and industrial control boards where reliability and repairability are prioritized over raw power rating.
Availability
P4KE82HE3/73 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom power feeding line surge suppression requiring stable component supply across multi-year production cycles.
Supply support for P4KE82HE3/73 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 reliability, AEC-Q qualification, and high-volume manufacturability.
The P4KE series targets cost-sensitive, high-reliability transient suppression in automotive, industrial, and telecom infrastructure - delivering standardized DO-41 TVS performance with rigorous process control and extended temperature validation.
FAQ
What is the clamping voltage of P4KE82HE3/73 at its rated peak pulse current?
The P4KE82HE3/73 clamps to a maximum of 113 V when subjected to its specified peak pulse current of 3.5 A (10/1000 μs waveform). This value is measured per Figure 1 in Vishay Document #88365 and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring downstream components remain within absolute maximum ratings. The P4KE82HE3/73 achieves this with a clamping ratio of approximately 1.38 relative to its nominal breakdown voltage.
Is P4KE82HE3/73 suitable for automotive applications?
Yes, P4KE82HE3/73 is AEC-Q101 qualified (confirmed by HE3 suffix per Vishay's ordering information and note on page 3), making it suitable for automotive powertrain, body electronics, and chassis modules. Its 175 °C maximum junction temperature, glass-passivated junction, and validation across temperature cycling, humidity, and mechanical shock meet automotive reliability requirements - unlike commercial-grade variants such as P4KE82A-E3/73. The P4KE82HE3/73 is explicitly designated for automotive use in Vishay's documentation.
How does the HE3 suffix differ from E3 in P4KE82HE3/73?
The HE3 suffix in P4KE82HE3/73 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes RoHS compliance only (commercial grade, no automotive qualification). Per Vishay's mechanical data section, HE3 parts undergo additional stress testing including high-temperature storage, temperature cycling, and biased HAST - required for automotive deployment. The P4KE82HE3/73 is therefore distinct from P4KE82A-E3/73 in both certification scope and application eligibility.
What is the thermal resistance from junction to lead (RθJL) for P4KE82HE3/73?
The P4KE82HE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, as specified in the Thermal Characteristics table (page 3) of Vishay Document #88365. This parameter governs heat transfer from the silicon die to the PCB copper via the leads, directly impacting safe power dissipation limits under sustained surge conditions. Designers use RθJL - not RθJA - to model thermal performance when leads are soldered to large copper areas, which is typical in automotive and industrial layouts. The P4KE82HE3/73 leverages this low RθJL to sustain repeated 400 W pulses without exceeding 175 °C junction temperature.
Can P4KE82HE3/73 be used in bidirectional configurations?
No, P4KE82HE3/73 is a unidirectional TVS diode, as confirmed by its part number suffix "A" (per Vishay's naming convention: "A" = unidirectional, "CA" = bidirectional) and absence of CA designation. Its electrical characteristics - including forward voltage (VF = 5.0 V at 25 A) and polarity marking (cathode band) - are defined only for reverse-biased clamping operation. For bidirectional protection, Vishay specifies variants like P4KE82CA; using P4KE82HE3/73 in bidirectional circuits would result in unintended forward conduction and failure. Always verify polarity and configuration against the exact P4KE82HE3/73 datasheet.
P4KE82HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 66.4V
- Voltage - Breakdown (Min):
- 73.8V
- Voltage - Clamping (Max) @ Ipp:
- 118V
- Current - Peak Pulse (10/1000µs):
- 3.4A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE82HE3/73 FAQ
1.How can I place an order for P4KE82HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE82HE3/73 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 P4KE82HE3/73 reliable?
The price and inventory of P4KE82HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE82HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE82HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE82HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE82HE3/73?
P4KE82HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE82HE3/73 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 P4KE82HE3/73?
For technical support, including P4KE82HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE82HE3/73 requirements.
6.How does Aetrix verify that P4KE82HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE82HE3/73 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 P4KE82HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE82HE3/73?
All P4KE82HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE82HE3/73, 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 P4KE82HE3/73 part is unused and in its original packaging.
Return procedure for P4KE82HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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