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Vishay General Semiconductor - Diodes Division P4KE16HE3/73
- Part No.:
- P4KE16HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE16HE3/73.pdf
- Description:
- TVS DIODE 12.9VWM 23.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,450
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Product details
Overview
P4KE16HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on power and signal lines. It features 16.8 V maximum breakdown voltage (VBR), 13.6 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 μs), 1.5 W steady-state power dissipation, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P4KE16HE3/73 datasheet, P4KE16HE3/73 pinout, P4KE16HE3/73 application, or P4KE16HE3/73 equivalent, this device is selected for robust overvoltage protection in DC power rails, sensor interfaces, and MOSFET gate drive circuits where fast response (<1 ns), low clamping voltage (22.5 V at 17.8 A), and high surge current tolerance are required.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp with glass-passivated junction, enabling stable breakdown behavior under repetitive transient stress. Its 10/1000 μs waveform rating supports IEC 61000-4-5 Level 3/4 surge immunity requirements and complies with AEC-Q101 for automotive under-hood applications.
The device exhibits 0.086 %/°C temperature coefficient of VBR, 66 °C/W junction-to-lead thermal resistance, and 1.0 mA test current for breakdown verification. It delivers 22.5 V clamping voltage at 17.8 A peak pulse current, with 1.0 μA max reverse leakage at 13.6 V stand-off voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 15.2 V / 16.8 V - defines guaranteed avalanche conduction onset range at 1.0 mA test current |
| VWM | 13.6 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 22.5 V at 17.8 A - clamping voltage during 400 W transient, limiting downstream circuit stress |
| IPPM | 17.8 A - peak surge current capability with 10/1000 μs waveform, critical for IEC 61000-4-5 compliance |
| PPPM | 400 W - standardized surge power handling, enabling protection against lightning-induced surges |
| TJ max | +175 °C - extended junction temperature rating supports under-hood automotive deployment |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads. Cathode indicated by color band; RoHS-compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., +12 V rail); color band identifies this end for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity for industrial and automotive power supply inputs |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units and body electronics |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage exposure to downstream ICs during transient events |
| 175 °C max junction temperature | Enables operation in high-ambient environments such as under-hood or industrial enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and ground to shunt surge energy before it reaches voltage regulators and microcontrollers. Use Value: Limits transient voltage to ≤22.5 V during 17.8 A surges, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input modules. IC Role / Device Role / Timing Role: Standoff protection element on 4–20 mA or 0–10 V signal lines exposed to field wiring inductive coupling. Use Value: Clamps induced spikes within 1 ns while maintaining <1.0 μA leakage at 13.6 V, preserving signal integrity and measurement accuracy. |
| DC Motor Drive Gate Protection | Consumer Power Adapter Input Protection |
Use Scenario: Shielding N-channel MOSFET gate drivers from flyback voltage spikes during motor commutation. IC Role / Device Role / Timing Role: Fast-acting unidirectional suppressor across gate-source terminals to prevent gate oxide rupture. Use Value: Responds in <1 ns and clamps to 22.5 V, ensuring gate voltage stays below absolute maximum rating of typical 20 V-rated MOSFETs. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standby-mode protector on 5 V/9 V/15 V output rails against capacitor discharge or regulator fault conditions. Use Value: Maintains 13.6 V standoff while delivering 400 W surge capacity, meeting UL 62368-1 transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | Surface-mount SMB package (vs. axial DO-41); same VBR range (15.2–16.8 V), identical 400 W rating but lower IPPM (17.5 A) | Better suited for space-constrained PCBs; requires rework for through-hole legacy designs | Select SMBJ16A when board real estate is limited and SMT assembly is available. |
| P4KE16A-E3/54 | Same DO-41 package and electrical specs, but commercial-grade (non-AEC-Q101) with JESD 201 Class 1A whisker testing only | Limited to non-automotive applications; lacks automotive qualification documentation and stress test validation | Choose P4KE16A-E3/54 for cost-sensitive consumer or industrial applications without automotive requirements. |
Compared with SMBJ16A and P4KE16A-E3/54, P4KE16HE3/73 uniquely combines AEC-Q101 qualification, axial DO-41 form factor, and verified 175 °C operation-making it the only option qualified for under-hood automotive use without layout change or derating.
Availability
P4KE16HE3/73 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC motor gate driver safeguarding requiring stable component supply across multi-year production cycles.
Supply support for P4KE16HE3/73 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The P4KE series was developed for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where high-energy surge immunity and long-term stability are mandatory.
FAQ
What is the clamping voltage of P4KE16HE3/73 and how is it measured?
The clamping voltage of P4KE16HE3/73 is 22.5 V, measured at 17.8 A peak pulse current using a 10/1000 μs waveform per IEC 61000-4-5. This value represents the maximum voltage seen across the device during a standardized surge event and is critical for ensuring downstream components remain within safe operating limits. The P4KE16HE3/73 achieves this clamping performance while maintaining low incremental surge resistance and fast sub-nanosecond response.
Is P4KE16HE3/73 suitable for automotive applications?
Yes, P4KE16HE3/73 is AEC-Q101 qualified and specifically rated for automotive use, including under-hood environments up to +175 °C junction temperature. Its glass-passivated junction, DO-41 mechanical robustness, and validated surge performance make it appropriate for protecting engine control units, body control modules, and sensor interfaces. The HE3 suffix confirms full AEC-Q101 compliance, distinguishing it from commercial-grade variants like P4KE16A-E3/54.
How does the VWM of 13.6 V affect circuit design with P4KE16HE3/73?
The 13.6 V stand-off voltage (VWM) of P4KE16HE3/73 sets the maximum continuous reverse voltage the device can block without exceeding 1.0 μA leakage. In practice, this means P4KE16HE3/73 is optimized for 12 V nominal systems-allowing margin above typical battery voltages (13.8 V float, 14.4 V charging) while avoiding false triggering. Designers must ensure normal operating voltage remains below 13.6 V to prevent premature conduction and excessive power dissipation in P4KE16HE3/73.
What is the thermal resistance of P4KE16HE3/73 and why does it matter?
P4KE16HE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, measured with lead length of 10 mm. This parameter directly impacts steady-state power handling: at 1.5 W dissipation, the junction rises ~100 °C above lead temperature. In high-ambient applications, proper lead soldering and copper pour area are essential to maintain safe junction temperatures. The RθJL value enables accurate thermal modeling when integrating P4KE16HE3/73 into thermally constrained layouts.
Can P4KE16HE3/73 be used in bidirectional configurations?
No, P4KE16HE3/73 is a unidirectional TVS diode, identifiable by its cathode band marking and specified breakdown behavior in one polarity only. For bidirectional protection, Vishay offers CA-suffixed variants such as P4KE16CA. Using P4KE16HE3/73 in reverse-biased configurations will not provide symmetrical clamping and may result in failure under negative transients. Always verify polarity alignment during placement to ensure correct operation of P4KE16HE3/73.
P4KE16HE3/73 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):
- 12.9V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.5V
- Current - Peak Pulse (10/1000µs):
- 17A
- 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)
P4KE16HE3/73 FAQ
1.How can I place an order for P4KE16HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE16HE3/73 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 P4KE16HE3/73 reliable?
The price and inventory of P4KE16HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE16HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE16HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE16HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE16HE3/73?
P4KE16HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE16HE3/73 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 P4KE16HE3/73?
For technical support, including P4KE16HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE16HE3/73 requirements.
6.How does Aetrix verify that P4KE16HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE16HE3/73 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 P4KE16HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE16HE3/73?
All P4KE16HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE16HE3/73, 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 P4KE16HE3/73 part is unused and in its original packaging.
Return procedure for P4KE16HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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