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Vishay General Semiconductor - Diodes Division P4KE39HE3/54
- Part No.:
- P4KE39HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE39HE3/54.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,655
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Product details
Overview
P4KE39HE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of sensitive electronics. It features a 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 7.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P4KE39HE3/54 datasheet, P4KE39HE3/54 pinout, P4KE39HE3/54 application, or P4KE39HE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical dimensions, clamping performance under surge conditions, and direct alternatives for circuit protection redesigns requiring RoHS-compliant, automotive-grade TVS diodes.
Technical Context
The P4KE39HE3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient events such as ESD, inductive switching spikes, and lightning-induced surges. Its unidirectional polarity uses a cathode band marking and exhibits low incremental surge resistance (rd) for stable clamping across repetitive 0.01% duty cycle pulses.
Thermally, it supports operation from −55 °C to +175 °C junction temperature, with RθJL = 66 °C/W and RθJA = 100 °C/W (LLead = 10 mm). The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, distinguishing it from commercial-grade E3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working margin |
| VBR min/max | 37.1 V / 41.0 V at IT = 1 mA - tight 10% tolerance ensures predictable turn-on threshold across production lots |
| VC @ IPPM | 53.9 V at 7.4 A - clamping voltage during 10/1000 μs surge; limits downstream IC stress to <54 V |
| PPPM | 400 W - peak pulse power handling per single transient; validated per Fig. 1 in datasheet 88365 |
| IFSM | 40 A - non-repetitive forward surge rating (8.3 ms half-sine); supports inrush and fault-current scenarios |
| TJ max | +175 °C - extended junction temperature enables under-hood automotive use without derating penalties |
| Qualification | AEC-Q101 qualified - certified for automotive electronic systems per stress test requirements |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band; 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 current entry / surge return path | Connected to protected line ground or low-side reference; conducts during reverse transients when cathode is biased positive |
| Cathode | Reverse-biased clamping node | Connected to supply rail or signal line; initiates avalanche conduction above VBR to shunt surge energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients common in 12 V/24 V automotive power nets without degradation |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during clamping - critical for protecting 3.3 V or 5 V logic interfaces |
| RoHS-compliant, JESD 201 Class 2 whisker resistance | Ensures solder joint integrity in high-reliability assemblies subject to vibration and thermal stress |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND to clamp surges >40 V while remaining inert below 33.3 V. Use Value: Limits voltage excursion to ≤53.9 V during 7.4 A transients, preventing latch-up or gate oxide damage in MCU power domains. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and field wiring transients. IC Role / Device Role / Timing Role: TVS connected anode-to-line, cathode-to-VCC, suppressing negative-going spikes and positive surges relative to supply. Use Value: Fast sub-nanosecond response prevents transient coupling into precision ADC front-ends or op-amp buffers. |
| Consumer Device USB Port Protection | Telecom Line Interface Surge Suppression |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in portable chargers and docking stations against contact ESD. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS used in series with data lines to suppress ±8 kV HBM ESD without signal distortion. Use Value: Maintains signal integrity up to 480 Mbps due to minimal junction capacitance (typ. <100 pF at 0 V) and low dynamic impedance. |
Use Scenario: Front-end protection of DSL or Ethernet PHY interfaces exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device in hybrid protection circuits, coordinated with gas discharge tubes and PTCs. Use Value: Withstands 400 W peak pulses and 40 A IFSM, providing first-stage energy diversion before secondary protection activates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | DO-214AA package, 36 V VWM, 40 V VBR, 58.1 V VC @ 6.9 A, same 400 W rating | Surface-mount footprint; higher thermal resistance (RθJA ≈ 150 °C/W) vs. DO-41's 100 °C/W | Choose SMBJ36A for space-constrained PCBs where reflow compatibility and automated assembly are prioritized over leaded thermal performance. |
| 1.5KE39A | Same DO-41 package, 39 V VWM, 43.3–47.7 V VBR, 60.2 V VC @ 6.7 A, 1500 W rating | Higher power rating but looser VBR tolerance (±10% vs. ±5.5% for P4KE39HE3/54) and no AEC-Q101 qualification | Choose 1.5KE39A only for non-automotive industrial applications where cost and raw surge capacity outweigh qualification and precision needs. |
Compared with SMBJ36A and 1.5KE39A, the P4KE39HE3/54 uniquely combines AEC-Q101 qualification, tight 37.1–41.0 V VBR tolerance, and DO-41 through-hole thermal performance - making it optimal for automotive and high-reliability industrial designs requiring traceable compliance and predictable clamping behavior.
Availability
P4KE39HE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom line interface protection requiring stable component supply and full AEC-Q101 documentation traceability.
Supply support for P4KE39HE3/54 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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and qualification rigor.
The P4KE39HE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - especially automotive, industrial, and telecom infrastructure where failure modes must be mitigated to ISO 7637-2 and IEC 61000-4-5 standards.
FAQ
What does the "HE3" suffix mean in P4KE39HE3/54?
The HE3 suffix in P4KE39HE3/54 indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike the commercial-grade E3 variant, the HE3 version undergoes extended stress testing for automotive use - including temperature cycling, humidity bias, and mechanical shock - and is approved for under-hood and safety-critical ECUs. This makes P4KE39HE3/54 distinct from standard P4KE39A or P4KE39E3 parts.
What is the maximum clamping voltage of P4KE39HE3/54 under surge conditions?
The maximum clamping voltage (VC) of P4KE39HE3/54 is 53.9 V at 7.4 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per Figure 1 and Table 1 in Vishay datasheet 88365 and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events - critical for ensuring compatibility with 3.3 V, 5 V, or 12 V system rails.
Can P4KE39HE3/54 replace P4KE39A in existing designs?
Yes, P4KE39HE3/54 is a drop-in replacement for P4KE39A in terms of electrical specs and DO-41 mechanical fit, but adds AEC-Q101 qualification and enhanced whisker resistance. No PCB layout changes are required. However, design validation must confirm that the tighter VBR range (37.1–41.0 V vs. P4KE39A's 37.1–41.0 V - identical per datasheet) and thermal profile meet system-level surge immunity targets.
What is the junction-to-lead thermal resistance (RθJL) of P4KE39HE3/54?
The junction-to-lead thermal resistance (RθJL) of P4KE39HE3/54 is 66 °C/W, as specified in the Thermal Characteristics table of Vishay datasheet 88365. This value enables efficient heat transfer from the silicon die to the PCB copper via the leads - supporting sustained operation at elevated ambient temperatures, particularly in automotive junction box or motor control applications where lead soldering provides a thermal path.
Is P4KE39HE3/54 suitable for bidirectional transient suppression?
No, P4KE39HE3/54 is a unidirectional TVS diode - its cathode band marks the terminal that must be connected to the protected line, with the anode tied to ground. For bidirectional protection, Vishay offers the P4KE39CA variant (with CA suffix), which has symmetrical breakdown in both polarities and no polarity marking. Using P4KE39HE3/54 in bidirectional configurations risks failure during negative transients.
P4KE39HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 31.6V
- Voltage - Breakdown (Min):
- 35.1V
- Voltage - Clamping (Max) @ Ipp:
- 56.4V
- Current - Peak Pulse (10/1000µs):
- 7.1A
- 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)
P4KE39HE3/54 FAQ
1.How can I place an order for P4KE39HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE39HE3/54 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 P4KE39HE3/54 reliable?
The price and inventory of P4KE39HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE39HE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE39HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE39HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE39HE3/54?
P4KE39HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE39HE3/54 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 P4KE39HE3/54?
For technical support, including P4KE39HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE39HE3/54 requirements.
6.How does Aetrix verify that P4KE39HE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE39HE3/54 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 P4KE39HE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE39HE3/54?
All P4KE39HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE39HE3/54, 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 P4KE39HE3/54 part is unused and in its original packaging.
Return procedure for P4KE39HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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