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Vishay General Semiconductor - Diodes Division P4KE20CHE3/73
- Part No.:
- P4KE20CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE20CHE3/73.pdf
- Description:
- TVS DIODE 16.2VWM 29.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,429
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Product details
Overview
P4KE20CHE3/73 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 20 V breakdown voltage (VBR min/max: 19.0–21.0 V), 17.1 V stand-off voltage (VWM), 1.0 mA test current, 1.0 μA max reverse leakage at VWM, and clamps transients to ≤27.7 V at 14.4 A peak pulse current - deployed on power rails and I/O lines of automotive sensor modules.
For engineers reviewing the P4KE20CHE3/73 datasheet, P4KE20CHE3/73 pinout, P4KE20CHE3/73 application, or P4KE20CHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, 400 W 10/1000 μs peak pulse power rating, DO-41 mechanical compatibility, and verified clamping performance under repetitive surge stress in industrial control and automotive body electronics.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to transient overvoltages induced by inductive switching or ESD events. Its thermal resistance (RθJL = 66 °C/W) and 175 °C max junction temperature support sustained operation in engine bay and power supply environments.
The P4KE20CHE3/73 uses a single-junction planar structure with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Its 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 |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - defines reliable avalanche conduction onset across production lot and temperature range |
| VWM | 17.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| IPPM | 14.4 A - peak surge current it safely clamps at 10/1000 μs waveform without degradation |
| VC @ IPPM | 27.7 V - clamped voltage during rated surge, limiting downstream IC stress to safe levels |
| PPPM | 400 W - peak transient power dissipation capability under standardized 10/1000 μs pulse |
| TJ max | +175 °C - enables placement near heat sources such as power MOSFETs or motor drivers |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with 25.4 mm minimum lead length, UL 94 V-0 rated epoxy |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; cathode indicated by color band on body; matte tin-plated terminals solderable per J-STD-002; 0.350 g unit weight; 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 TVS configuration |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line (e.g., 12 V rail or signal input); conducts when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity without derating in PCB layouts with <10 mm trace length |
| AEC-Q101 qualified (HE3) | Validated for automotive powertrain and chassis applications requiring zero defect field performance over 15-year service life |
| Low incremental surge resistance | Ensures minimal VC overshoot during fast-rising transients (<100 ns rise time), critical for protecting CAN/LIN transceivers |
| Solder dip 275 °C max. for 10 s | Compatible with standard wave and reflow soldering processes without delamination or parameter shift |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 12 V supply rail and switch inputs against load dump (ISO 7637-2 Pulse 5a) and inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Unidirectional TVS placed between fused battery feed and local LDO input, clamping transients before they reach power management ICs. Use Value: Limits rail voltage excursion to ≤27.7 V during 14.4 A surges, preventing brownout reset or latch-up in microcontrollers and CAN transceivers. | Use Scenario: Shields 24 V DC digital input channels from field-wiring-induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Front-end protection element on optocoupler input side, absorbing energy from accidental 48 V miswiring or relay contact arcing. Use Value: Withstands ≥1000 surges at rated PPPM without parameter drift, reducing field failure rate in harsh electromagnetic environments. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply OVP Stage |
Use Scenario: Guards gate driver supply lines against voltage spikes generated by BLDC motor commutation noise. IC Role / Device Role / Timing Role: Local clamping device adjacent to high-side MOSFET bootstrap capacitor, suppressing ringing above 20 V threshold. Use Value: Fast response (<1 ns) and low VC ensure gate oxide integrity is preserved during repeated PWM switching transitions. | Use Scenario: Secondary overvoltage protection in AC/DC adapter output stage, supplementing primary-side feedback loop. IC Role / Device Role / Timing Role: Fail-safe shunt element that activates only if main regulation fails, diverting excess energy to ground before downstream DC-DC converters are damaged. Use Value: 175 °C TJ max and 66 °C/W RθJL allow direct mounting on heatsink-equipped PCB areas without thermal runaway risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | DO-214AA package; 200 W PPPM; lower IPPM (10.1 A); same VBR range but higher VC (32.4 V) | Suitable for space-constrained SMT designs; not AEC-Q101 qualified in standard grade | Select when board area is limited and automotive qualification is not required |
| 1.5KE20A | Same DO-41 package; 1500 W PPPM; higher VC (36.5 V); non-AEC-Q101; 1.5 W PD vs. 1.5 W | Used where higher surge margin is needed (e.g., outdoor telecom enclosures), but lacks automotive process validation | Select for cost-sensitive industrial applications needing higher pulse energy absorption |
Compared with SMBJ20A and 1.5KE20A, the P4KE20CHE3/73 delivers AEC-Q101 assurance, tighter VC (27.7 V), and optimal balance of surge robustness and board-level integration for automotive and industrial control - without requiring layout changes or derating for temperature-cycled environments.
Availability
P4KE20CHE3/73 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and consumer appliance motor drive circuits requiring stable component supply across multi-year production cycles.
Supply support for P4KE20CHE3/73 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, automotive qualification, and power efficiency.
The P4KE series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure where repeatable clamping performance and AEC-Q101 compliance are mandatory.
FAQ
What is the polarity configuration of the P4KE20CHE3/73?
The P4KE20CHE3/73 is a unidirectional TVS diode, with cathode identified by a color band on the DO-41 package body. It conducts in reverse bias above VBR and blocks up to 17.1 V in forward direction, making it suitable for DC rail protection where polarity is fixed. Bidirectional variants use "CA" suffix (e.g., P4KE20CA).
Does the P4KE20CHE3/73 meet automotive qualification standards?
Yes, the P4KE20CHE3/73 carries the HE3 suffix, confirming full AEC-Q101 qualification per Rev. 16-Sep-2021 documentation. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and surge endurance - validating its use in engine control units, lighting modules, and ADAS sensor interfaces.
What is the maximum clamping voltage of the P4KE20CHE3/73 under rated surge conditions?
The P4KE20CHE3/73 clamps to a maximum of 27.7 V when subjected to its rated 14.4 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed across production lots and is measured at TA = 25 °C per Vishay Document Number 88365.
Can the P4KE20CHE3/73 be used in bidirectional signal line protection?
No - the P4KE20CHE3/73 is unidirectional and unsuitable for AC or bidirectional data lines (e.g., RS-485, CAN). For such applications, select a bidirectional variant like P4KE20CA, which provides symmetrical clamping in both directions and no polarity marking on the package.
What is the thermal resistance specification for the P4KE20CHE3/73?
The P4KE20CHE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, measured with lead length ≥10 mm. This enables effective heat transfer to PCB copper pours or heatsinks, supporting continuous operation at elevated ambient temperatures up to +125 °C when mounted per JEDEC guidelines.
P4KE20CHE3/73 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16.2V
- Voltage - Breakdown (Min):
- 18V
- Voltage - Clamping (Max) @ Ipp:
- 29.1V
- Current - Peak Pulse (10/1000µs):
- 13.7A
- 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)
P4KE20CHE3/73 FAQ
1.How can I place an order for P4KE20CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE20CHE3/73 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 P4KE20CHE3/73 reliable?
The price and inventory of P4KE20CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE20CHE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE20CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE20CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE20CHE3/73?
P4KE20CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE20CHE3/73 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 P4KE20CHE3/73?
For technical support, including P4KE20CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE20CHE3/73 requirements.
6.How does Aetrix verify that P4KE20CHE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE20CHE3/73 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 P4KE20CHE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE20CHE3/73?
All P4KE20CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE20CHE3/73, 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 P4KE20CHE3/73 part is unused and in its original packaging.
Return procedure for P4KE20CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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