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Vishay General Semiconductor - Diodes Division P4KE20CHE3/54
- Part No.:
- P4KE20CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE20CHE3/54.pdf
- Description:
- TVS DIODE 16.2VWM 29.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,240
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Product details
Overview
P4KE20CHE3/54 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 a 20 V breakdown voltage (VBR min/max = 19.0–21.0 V), 17.1 V stand-off voltage (VWM), 27.7 V clamping voltage at 14.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and I/O lines of automotive sensor modules.
For engineers reviewing the P4KE20CHE3/54 datasheet, P4KE20CHE3/54 pinout, P4KE20CHE3/54 application, or P4KE20CHE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C maximum junction temperature, low 0.090 %/°C VBR temperature coefficient, and compatibility with automated SMT placement via 13" paper tape and reel (5500 pcs/reel).
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 19.0–21.0 V breakdown range to clamp transients. Its glass-passivated junction ensures stable leakage (<1.0 μA at 17.1 V) and fast response time (<1.0 ns), critical for protecting MOSFET gates and microcontroller I/O pins against inductive switching spikes.
The P4KE20CHE3/54 is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), 1.5 W steady-state power dissipation, and exhibits 66 °C/W junction-to-lead thermal resistance - enabling direct PCB trace heat sinking without external heatsinks in space-constrained automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - defines precise avalanche initiation threshold under 1.0 mA test current |
| VWM | 17.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 27.7 V at 14.4 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak transient energy absorption capability per single pulse, duty cycle ≤ 0.01 % |
| TJ max. | +175 °C - enables operation in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | DO-41 (DO-204AL) - axial-leaded through-hole package with 25.4 mm minimum lead length, UL 94 V-0 molded epoxy |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, cylindrical epoxy body with cathode band marking; leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; meets JESD 201 Class 2 whisker test (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 | Avalanche clamping terminal | Marked with color band; connected to protected line (e.g., 12 V rail or signal input) to shunt overvoltage to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance (±5 %) and low leakage (<1.0 μA) across -55 °C to +175 °C |
| 400 W peak pulse power (10/1000 μs) | Protects against ISO 7637-2 Pulse 1/2a/3a surges and IEC 61000-4-5 Level 3 (1 kV/2 Ω) transients |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response), improving protection margin |
| RoHS-compliant HE3 suffix | Meets automotive material compliance requirements (JESD 201 Class 2 whisker resistance, UL 94 V-0 flammability) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery-supplied ECUs exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 17.1 V. Use Value: Limits voltage seen by LDO regulators and MCU power pins to ≤27.7 V during 400 W transient events. |
Use Scenario: 4–20 mA current-loop sensors in factory automation subject to cable-induced EFT bursts. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to divert fast transients before reaching analog front-end op-amps. Use Value: Clamps 1 kV/50 Ω EFT pulses within <1 ns, preserving signal integrity and preventing ADC saturation. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: AC/DC adapter primary-side rectifier output subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS across bulk capacitor to absorb repetitive line transients. Use Value: Withstands 400 W pulses at 0.01 % duty cycle, extending capacitor lifetime and avoiding thermal runaway. |
Use Scenario: DSL or Ethernet line cards interfacing with outdoor copper cabling vulnerable to induced lightning surges. IC Role / Device Role / Timing Role: First-stage protection device on tip/ring lines before integrated line driver ICs. Use Value: 27.7 V clamping voltage ensures safe operation of 3.3 V or 5 V PHY ICs compliant with GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Surface-mount SMB package (3.5 × 4.6 mm), same VBR (19.0–21.0 V), 600 W PPPM | Requires PCB re-layout; better suited for high-density consumer PCBs with automated assembly | Select SMBJ20A when board space is constrained and SMT process is established; P4KE20CHE3/54 remains optimal for through-hole legacy designs and high-reliability service replacements. |
| 1.5KE20A | Same DO-41 package but 1500 W PPPM, higher VC (32.4 V), no AEC-Q101 qualification | Lacks automotive qualification; used in industrial mains-powered equipment where higher clamping is acceptable | Choose 1.5KE20A only for cost-sensitive non-automotive applications requiring higher surge margin; P4KE20CHE3/54 provides tighter VC and certified automotive reliability. |
Compared with SMBJ20A and 1.5KE20A, the P4KE20CHE3/54 delivers AEC-Q101 validation, lower clamping voltage (27.7 V vs. 32.4 V), and optimized thermal performance (66 °C/W RθJL) - making it the preferred choice for automotive power rail protection where reliability and precision clamping are mandatory.
Availability
P4KE20CHE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom line card designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4KE20CHE3/54 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 high-reliability and automotive-grade solutions.
The P4KE20CHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be rigorously controlled.
FAQ
What is the exact breakdown voltage range for P4KE20CHE3/54?
The P4KE20CHE3/54 has a guaranteed breakdown voltage range of 19.0 V to 21.0 V at 1.0 mA test current (VBR min/max), measured per ANSI/IEEE C62.35 standards. This tight ±5 % tolerance ensures predictable clamping behavior in automotive power rail protection circuits where overvoltage margins are strictly defined.
Is P4KE20CHE3/54 suitable for automotive applications?
Yes, the P4KE20CHE3/54 is AEC-Q101 qualified and carries the HE3 suffix indicating compliance with automotive material requirements including JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability. It is widely deployed in engine control modules, body control units, and ADAS sensor interfaces where sustained operation up to +175 °C is required.
What does the "HE3/54" suffix mean in P4KE20CHE3/54?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "/54" specifies the preferred package code for 13-inch paper tape and reel packaging containing 5500 units. This ordering format ensures consistent logistics handling and automated placement compatibility.
How does P4KE20CHE3/54 compare to bidirectional TVS diodes like P4KE20CA?
The P4KE20CHE3/54 is unidirectional and features a cathode band for polarity-sensitive placement, while P4KE20CA is bidirectional with no polarity marking. The unidirectional version offers lower leakage (<1.0 μA at 17.1 V) and is preferred for DC power rail protection; bidirectional types are used on AC-coupled or differential signal lines where voltage polarity reverses.
What is the maximum clamping voltage of P4KE20CHE3/54 under surge conditions?
The P4KE20CHE3/54 clamps to a maximum of 27.7 V at its rated peak pulse current of 14.4 A (10/1000 μs waveform). This value is measured per JEDEC standards and guarantees that downstream components such as 3.3 V or 5 V logic ICs remain within absolute maximum ratings during transient events.
P4KE20CHE3/54 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:
- -
- 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)
P4KE20CHE3/54 FAQ
1.How can I place an order for P4KE20CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE20CHE3/54 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 P4KE20CHE3/54 reliable?
The price and inventory of P4KE20CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE20CHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE20CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE20CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE20CHE3/54?
P4KE20CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE20CHE3/54 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 P4KE20CHE3/54?
For technical support, including P4KE20CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE20CHE3/54 requirements.
6.How does Aetrix verify that P4KE20CHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE20CHE3/54 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 P4KE20CHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE20CHE3/54?
All P4KE20CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE20CHE3/54, 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 P4KE20CHE3/54 part is unused and in its original packaging.
Return procedure for P4KE20CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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