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Vishay General Semiconductor - Diodes Division P4KE39AHE3/54
- Part No.:
- P4KE39AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE39AHE3/54.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,689
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Product details
Overview
P4KE39AHE3/54 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 in automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the P4KE39AHE3/54 datasheet, P4KE39AHE3/54 pinout, P4KE39AHE3/54 application, or P4KE39AHE3/54 equivalent, key selection criteria include clamping performance under 10/1000 μs transients, AEC-Q101 qualification for automotive use, DO-41 mechanical compatibility, and unidirectional polarity with cathode band marking.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression: it triggers at VBR ≥ 37.1 V and clamps to ≤ 53.9 V within picoseconds when subjected to 10/1000 μs surges up to 7.4 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at 33.3 V) and low incremental surge resistance.
Thermally, it supports operation from –55 °C to +175 °C junction temperature, with RθJL = 66 °C/W and RθJA = 100 °C/W (lead length 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 (Stand-off Voltage) | 33.3 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 37.1–41.0 V at 1 mA - precise avalanche initiation range ensuring reliable turn-on during transients without premature leakage. |
| VC (Clamping Voltage) | 53.9 V at 7.4 A IPPM - peak voltage seen by protected circuit during 10/1000 μs surge; critical for IC-level survivability. |
| PPPM (Peak Pulse Power) | 400 W - energy-handling capacity for standardized 10/1000 μs waveform; enables protection against inductive switching spikes. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +175 °C - extended thermal capability supports under-hood automotive and high-temperature industrial environments. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per AEC standard. |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads; RoHS-compliant and UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward conduction terminal | Connects to circuit ground or low-side reference; conducts during forward surge events (e.g., reverse battery). |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line; initiates avalanche breakdown above VBR to shunt transient energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage, and long-term reliability under thermal cycling and humidity stress. |
| 400 W peak pulse power (10/1000 μs) | Provides proven immunity to ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges in automotive ECUs. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during clamping - critical for protecting 3.3 V or 5 V logic interfaces downstream. |
| Solderable per J-STD-002/JESD 22-B102 | Supports automated through-hole reflow and wave soldering with 275 °C / 10 s max solder dip tolerance. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach the transceiver input stage. Use Value: Prevents latch-up or permanent damage to automotive-grade transceivers by limiting voltage to ≤53.9 V during 10/1000 μs surges up to 7.4 A. |
Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges (e.g., relay coil de-energization, motor contactor bounce). IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V DC input channels, positioned before optocoupler or Schmitt trigger input conditioning. Use Value: Maintains functional safety integrity by clamping transients within 1 ns response time while sustaining 175 °C junction temperature in cabinet-mounted enclosures. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB PD chargers exposed to mains-borne transients and ESD coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS across DC output rails (e.g., 5 V, 12 V) to prevent overvoltage propagation to connected devices. Use Value: Enables compliance with IEC 61000-4-5 (1 kV/2 kV) with minimal board space due to compact DO-41 footprint and no external biasing required. |
Use Scenario: Protecting Ethernet PHY interface pins and RS-485 transceivers in network switches and base station equipment from lightning-induced surges on copper lines. IC Role / Device Role / Timing Role: Primary-stage unidirectional suppressor on VDD supply rail feeding communication ICs, coordinated with secondary GDT or polymer PTC. Use Value: Delivers 400 W surge handling with <1.0 μA leakage at 33.3 V - preserving signal-to-noise ratio and minimizing standby current in always-on telecom nodes. |
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; 58.1 V VC at 6.9 A; 600 W PPPM; lower clamping but larger footprint. | Better suited for surface-mount PCBs with space for SMC/SMB packages; higher power rating but less thermally efficient in axial lead configurations. | Select SMBJ36A only if board layout allows SMD placement and higher surge margin is required beyond 400 W. |
| P4KE39A-E3/54 | Same electrical specs and DO-41 package; lacks AEC-Q101 qualification and JESD 201 Class 2 whisker resistance (E3 vs. HE3). | Restricted to commercial-grade applications (e.g., consumer, non-safety-critical industrial); not approved for automotive under hood or chassis locations. | Choose P4KE39AHE3/54 over P4KE39A-E3/54 when automotive qualification, extended temperature operation, or enhanced metallurgical reliability is mandatory. |
Compared with SMBJ36A and P4KE39A-E3/54, P4KE39AHE3/54 uniquely combines AEC-Q101 qualification, DO-41 through-hole compatibility, and verified 175 °C operation - making it the only option among the three qualified for automotive powertrain and ADAS sensor protection without redesigning the mounting method.
Availability
P4KE39AHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface surge suppression requiring stable component supply across multi-year production cycles.
Supply support for P4KE39AHE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4KE39AHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the P4KE39AHE3/54 at its rated peak pulse current?
The P4KE39AHE3/54 has a maximum clamping voltage (VC) of 53.9 V at 7.4 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value ensures protected circuits remain within safe voltage limits during surge events, and it is guaranteed across the full operating temperature range of –55 °C to +175 °C. The P4KE39AHE3/54 achieves this with low incremental surge resistance inherent to its glass-passivated junction design.
Is the P4KE39AHE3/54 suitable for automotive applications?
Yes, the P4KE39AHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis-mounted systems. Its HE3 suffix denotes compliance with AEC-Q101 stress tests (including temperature cycling, HTRB, and mechanical shock) and JESD 201 Class 2 whisker resistance. The P4KE39AHE3/54 operates reliably from –55 °C to +175 °C, meeting requirements for engine control units, ADAS sensors, and body electronics.
How does the P4KE39AHE3/54 differ from the commercial-grade P4KE39A-E3/54?
The P4KE39AHE3/54 differs from P4KE39A-E3/54 in three key ways: it carries AEC-Q101 qualification, meets JESD 201 Class 2 whisker resistance (vs. Class 1A for E3), and is screened for extended temperature operation in automotive environments. Electrically, both share identical VWM (33.3 V), VBR (37.1–41.0 V), and VC (53.9 V) specs. The P4KE39AHE3/54 is the only version approved for safety-critical automotive applications per OEM requirements.
What is the reverse leakage current specification for the P4KE39AHE3/54 at its stand-off voltage?
The P4KE39AHE3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its stand-off voltage (VWM) of 33.3 V, measured at 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes power loss in always-on systems. The value remains stable across temperature due to the device's glass-passivated chip junction and tight process control - a key advantage confirmed in Vishay's 88365 datasheet.
Can the P4KE39AHE3/54 be used in bidirectional configurations?
No, the P4KE39AHE3/54 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants require the "CA" suffix (e.g., P4KE39CA). Using P4KE39AHE3/54 in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. For symmetric surge protection, select a verified bidirectional part such as P4KE39CAHE3/54 - which is not interchangeable with P4KE39AHE3/54.
P4KE39AHE3/54 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.4A
- 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)
P4KE39AHE3/54 FAQ
1.How can I place an order for P4KE39AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE39AHE3/54 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 P4KE39AHE3/54 reliable?
The price and inventory of P4KE39AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE39AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE39AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE39AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE39AHE3/54?
P4KE39AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE39AHE3/54 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 P4KE39AHE3/54?
For technical support, including P4KE39AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE39AHE3/54 requirements.
6.How does Aetrix verify that P4KE39AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE39AHE3/54 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 P4KE39AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE39AHE3/54?
All P4KE39AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE39AHE3/54, 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 P4KE39AHE3/54 part is unused and in its original packaging.
Return procedure for P4KE39AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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