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Vishay General Semiconductor - Diodes Division P4KE11HE3/73
- Part No.:
- P4KE11HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE11HE3/73.pdf
- Description:
- TVS DIODE 8.92VWM 16.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,561
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Product details
Overview
P4KE11HE3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in DO-41 package, designed for clamping inductive switching surges and ESD transients on power rails and signal lines. It features 10.5 V clamping voltage at 25.6 A peak pulse current, 9.40 V stand-off voltage, 15.6 V breakdown voltage (min), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P4KE11HE3/73 datasheet, P4KE11HE3/73 pinout, P4KE11HE3/73 application, or P4KE11HE3/73 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, DO-41 mechanical compatibility, and AEC-Q101 qualification for under-hood electronics protection.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression. Its glass-passivated junction enables low incremental surge resistance (typical < 0.5 Ω) and sub-nanosecond response time, ensuring effective clamping before downstream ICs experience overvoltage stress.
Rated for 400 W peak pulse power (10/1000 μs waveform, 0.01% duty cycle), it sustains 40 A non-repetitive forward surge current and maintains stable operation from –55 °C to +175 °C junction temperature, with thermal resistance of 66 °C/W (junction-to-lead).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Clamping Voltage VC | 15.6 V at 25.6 A IPPM - limits transient voltage seen by protected circuit during worst-case surge |
| Stand-off Voltage VWM | 9.40 V - maximum continuous reverse working voltage without significant leakage (< 5 μA) |
| Breakdown Voltage VBR | 10.5–11.6 V at 1 mA - onset of controlled avalanche conduction under transient conditions |
| Peak Pulse Power PPPM | 400 W (10/1000 μs) - defines energy-handling capability for common lightning/inductive-spike waveforms |
| Junction Temperature Range | –55 °C to +175 °C - supports operation in engine compartments and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive applications including powertrain, body control, and ADAS sensor interfaces |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with 2.0–2.7 mm diameter leads and 25.4 mm minimum body length |
Pinout & Package
DO-41 package: axial-leaded, cylindrical epoxy-molded body with cathode band marking on unidirectional types. Matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during positive transients when cathode is biased higher |
| Cathode | Avalanche clamping terminal | Marked with color band; connected to protected line (e.g., 12 V rail); clamps reverse transients by avalanching at VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress |
| 400 W peak pulse power (10/1000 μs) | Handles typical ISO 7637-2 pulse 1/2/5a surges without degradation in automotive 12 V systems |
| AEC-Q101 qualification | Validated for temperature cycling, HTRB, AC/HU, and surge endurance per automotive stress test standards |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes overvoltage margin between clamping and breakdown, improving system-level surge margin |
| UL 94 V-0 compliant molding | Ensures flame-retardant behavior in enclosed automotive and industrial enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges above 15.6 V. Use Value: Prevents damage to LDOs, microcontrollers, and CAN transceivers during ISO 16750-2 Test 4a (load dump) events. |
Use Scenario: Protecting analog front-ends of pressure, temperature, and position sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional clamping not applicable; P4KE11HE3/73 used unidirectionally on sensor supply line with cathode to VSUPPLY. Use Value: Limits induced surges from nearby motor drives to < 15.6 V, preserving ADC reference integrity and sensor accuracy. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
|
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for USB-C PD and laptop chargers. IC Role / Device Role / Timing Role: Clamps flyback transformer leakage spikes and rectifier reverse recovery transients on +12 V or +19 V output rails. Use Value: Maintains compliance with IEC 62368-1 Annex G surge immunity requirements using single-device solution. |
Use Scenario: Primary protection for Ethernet PHY power pins and auxiliary bias rails in telecom base station line cards. IC Role / Device Role / Timing Role: Mounted at board edge near connector; cathode tied to 3.3 V or 5 V supply, anode to ground. Use Value: Absorbs IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without latch-up or parametric shift in adjacent PHY ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | Surface-mount SMB package (vs. axial DO-41); same 11 V breakdown, but 600 W PPPM rating | Requires PCB rework for SMT assembly; better suited for high-density layouts and automated production | Select SMBJ11A when space-constrained designs or reflow-only assembly processes preclude through-hole components |
| P4KE11A-E3/54 | Identical electrical specs and DO-41 package, but commercial-grade (non-AEC-Q101 qualified) | Lacks automotive qualification testing; suitable for consumer/industrial use where extended temperature or lifetime validation is not required | Select P4KE11A-E3/54 for cost-sensitive non-automotive applications with identical clamping performance |
Compared with SMBJ11A and P4KE11A-E3/54, the P4KE11HE3/73 uniquely combines AEC-Q101 qualification, axial DO-41 form factor, and proven 175 °C junction capability-making it the only choice for legacy automotive harnesses and service replacement modules requiring through-hole mounting and full automotive stress validation.
Availability
P4KE11HE3/73 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply across extended product lifecycles.
Supply support for P4KE11HE3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4KE series belongs to Vishay's TransZORB® TVS platform, engineered specifically for robust transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where failure modes must be mitigated without compromising signal integrity.
FAQ
What is the clamping voltage of the P4KE11HE3/73 under standard test conditions?
The P4KE11HE3/73 has a maximum clamping voltage (VC) of 15.6 V at 25.6 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value ensures that protected circuits experience no more than 15.6 V during transient events, making it suitable for safeguarding 12 V systems against ISO 7637-2 pulses. The P4KE11HE3/73 achieves this clamping performance while maintaining low incremental resistance for minimal voltage overshoot.
Is the P4KE11HE3/73 suitable for automotive applications?
Yes, the P4KE11HE3/73 is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C, confirming its suitability for under-hood and powertrain applications. Its DO-41 package meets automotive vibration and thermal cycling requirements, and the HE3 suffix indicates compliance with JESD 201 Class 2 whisker resistance-critical for long-life automotive harnesses. The P4KE11HE3/73 is explicitly listed in Vishay's AEC-Q101 qualified devices table.
How does the P4KE11HE3/73 differ from the P4KE11A-E3/54?
The P4KE11HE3/73 and P4KE11A-E3/54 share identical electrical parameters and DO-41 packaging, but differ in qualification: P4KE11HE3/73 is AEC-Q101 qualified and meets JESD 201 Class 2 whisker resistance, whereas P4KE11A-E3/54 is commercial-grade only. Both use matte tin-plated leads and UL 94 V-0 molding, but only the P4KE11HE3/73 is approved for automotive production use per manufacturer documentation.
What is the thermal resistance of the P4KE11HE3/73, and how does it affect layout?
The P4KE11HE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, enabling efficient heat transfer to PCB copper or chassis when leads are soldered to wide traces. For sustained power dissipation, designers should maintain ≥10 mm lead length and use ≥250 mm² copper pour per lead to avoid exceeding the 1.5 W steady-state power limit. This RθJL value is critical when estimating junction temperature rise during repetitive surge events in the P4KE11HE3/73.
Can the P4KE11HE3/73 be used in bidirectional configurations?
No-the P4KE11HE3/73 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants require the "CA" suffix (e.g., P4KE11CA). Using the P4KE11HE3/73 in reverse-biased configurations will result in forward conduction (~0.7–1.0 V drop) rather than symmetrical clamping. For AC line or differential signal protection, select a CA-suffixed part or pair two unidirectional devices back-to-back-never substitute P4KE11HE3/73 for bidirectional operation.
P4KE11HE3/73 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):
- 8.92V
- Voltage - Breakdown (Min):
- 9.9V
- Voltage - Clamping (Max) @ Ipp:
- 16.2V
- Current - Peak Pulse (10/1000µs):
- 24.7A
- 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)
P4KE11HE3/73 FAQ
1.How can I place an order for P4KE11HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE11HE3/73 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 P4KE11HE3/73 reliable?
The price and inventory of P4KE11HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE11HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE11HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE11HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE11HE3/73?
P4KE11HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE11HE3/73 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 P4KE11HE3/73?
For technical support, including P4KE11HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE11HE3/73 requirements.
6.How does Aetrix verify that P4KE11HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE11HE3/73 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 P4KE11HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE11HE3/73?
All P4KE11HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE11HE3/73, 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 P4KE11HE3/73 part is unused and in its original packaging.
Return procedure for P4KE11HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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