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Vishay General Semiconductor - Diodes Division P4KE27CHE3/73
- Part No.:
- P4KE27CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE27CHE3/73.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,933
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Product details
Overview
P4KE27CHE3/73 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 a 23.1 V stand-off voltage (VWM), 25.7–28.4 V breakdown voltage (VBR) at 1 mA, 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and signal lines of automotive sensor modules.
For engineers reviewing the P4KE27CHE3/73 datasheet, P4KE27CHE3/73 pinout, P4KE27CHE3/73 application, or P4KE27CHE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical dimensions, clamping behavior under transient stress, and direct alternatives for automotive-grade overvoltage protection design.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (25.7–28.4 V). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 23.1 V), while the 66 °C/W junction-to-lead thermal resistance supports reliable power dissipation during transient events.
The device complies with AEC-Q101 stress testing for automotive applications and uses matte tin-plated leads solderable per J-STD-002. Its 10/1000 μs waveform response enables suppression of inductive switching transients and lightning-induced surges without latch-up or degradation under repetitive duty cycles ≤0.01 %.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 23.1 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 25.7–28.4 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 37.5 V at 10.7 A IPPM - Peak voltage seen by protected circuit during 400 W transient; limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capability with 10/1000 μs waveform; meets IEC 61000-4-5 Level 3 surge immunity. |
| TJ max. | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD-HBM. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; cathode indicated by color band on body. Matte tin-plated terminals meet JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path); defines polarity-sensitive clamping direction. |
| Cathode (banded end) | Avalanche conduction terminal / Clamping output node | Connected to protected line (e.g., 24 V rail or CAN_H); conducts surge current to anode when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance (±5 %) and low leakage (<1.0 μA) across -55 to +175 °C operating range. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit / 0.5 kV source impedance in industrial and automotive systems. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS sensor interfaces requiring zero field failure risk. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., load dump), improving protection margin for 24 V microcontrollers. |
| UL 94 V-0 molding compound | Ensures flame-retardant enclosure integrity during fault conditions, meeting automotive and industrial safety standards. |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24 V analog sensor outputs (e.g., pressure, temperature) from load-dump transients and battery reverse connection. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and MCU ADC input, referenced to chassis ground. Use Value: Limits transient voltage to ≤37.5 V, preventing damage to 3.3 V or 5 V ADC front-ends while maintaining signal integrity during normal operation. |
Use Scenario: Shielding digital input channels of programmable logic controllers from inductive kickback in solenoid/relay control circuits. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input optocoupler terminals to shunt 400 W surges before isolation barrier. Use Value: Enables robust 24 V DC input stage compliance with IEC 61000-4-4 EFT (4 kV) and IEC 61000-4-5 surge (2 kV) standards. |
| Telecom Power Rail Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered Ethernet switch ports against cable discharge events and lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on each data pair (e.g., TX+/TX−), referenced to isolated DC supply rail. Use Value: Clamps induced transients within 1 ns response time, preserving Ethernet signal integrity up to 100 MHz bandwidth. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp flyback voltage during MOSFET turn-off in H-bridge drivers. Use Value: Absorbs 400 W inductive energy without degradation, extending MOSFET lifetime and reducing EMI emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | DO-214AA package; 24 V VWM, 38.9 V VC at 10.3 A; 600 W PPPM; higher power density but larger footprint. | Better suited for PCBs with space for surface-mount layout and higher surge duty cycles. | Select SMBJ24A when board area allows SMD placement and system requires >400 W surge handling with lower thermal resistance. |
| 1.5KE27A | DO-201AD package; identical VWM/VBR/VC specs; 1.5 kW PPPM; larger case, higher IPPM (33.3 A), not AEC-Q101 qualified. | Used in non-automotive industrial power supplies where qualification is not mandated. | Choose 1.5KE27A for cost-sensitive, high-energy surge scenarios outside automotive qualification scope. |
Compared with P4KE27CHE3/73, SMBJ24A offers superior power density and thermal performance in SMD form, while 1.5KE27A delivers higher surge capacity in through-hole format but lacks automotive qualification - making P4KE27CHE3/73 the optimal choice for space-constrained, AEC-Q101–compliant 24 V system protection.
Availability
P4KE27CHE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom power rails, and consumer appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4KE27CHE3/73 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, precision, and automotive-grade qualification.
The P4KE27CHE3/73 belongs to Vishay's TRANSZORB® family of TVS diodes, engineered specifically for robust overvoltage protection in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the P4KE27CHE3/73 under maximum rated surge current?
The P4KE27CHE3/73 has a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88365) and defines the upper voltage limit imposed on protected circuitry during transient events. The P4KE27CHE3/73 maintains this clamping performance across its qualified temperature range.
Is the P4KE27CHE3/73 suitable for automotive applications?
Yes, the P4KE27CHE3/73 is AEC-Q101 qualified, confirming its suitability for automotive use cases including engine control units, body electronics, and ADAS sensor interfaces. The HE3 suffix explicitly denotes AEC-Q101 qualification, and the device operates reliably from -55 °C to +175 °C junction temperature. The P4KE27CHE3/73 meets automotive surge immunity requirements such as ISO 7637-2 and ISO 16750-2.
What does the "HE3" suffix indicate in P4KE27CHE3/73?
The "HE3" suffix in P4KE27CHE3/73 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" versions and confirms compliance with automotive reliability standards. The P4KE27CHE3/73 also features matte tin-plated leads and UL 94 V-0 molding compound - all documented in Vishay's official datasheet revision 16-Sep-2021.
How does the P4KE27CHE3/73 differ from bidirectional TVS diodes like P4KE27CA?
The P4KE27CHE3/73 is unidirectional and features a cathode band for polarity-sensitive placement, whereas P4KE27CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The P4KE27CHE3/73 provides lower forward voltage drop (VF = 3.5 V at 25 A) and is optimized for DC rail protection, while P4KE27CA suits AC or differential signal lines. Their VBR and VC values differ accordingly.
What is the thermal resistance of the P4KE27CHE3/73, and how does it affect layout?
The P4KE27CHE3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, enabling efficient heat transfer from the die to PCB copper via axial leads. For sustained surge duty, designers should use ≥10 mm lead length and generous copper pour on both pads to maintain junction temperature below 175 °C. This RθJL value is confirmed in Vishay's Thermal Characteristics table (Document Number: 88365, page 3) for the P4KE27CHE3/73.
P4KE27CHE3/73 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):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 10.2A
- 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)
P4KE27CHE3/73 FAQ
1.How can I place an order for P4KE27CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE27CHE3/73 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 P4KE27CHE3/73 reliable?
The price and inventory of P4KE27CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE27CHE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE27CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE27CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE27CHE3/73?
P4KE27CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE27CHE3/73 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 P4KE27CHE3/73?
For technical support, including P4KE27CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE27CHE3/73 requirements.
6.How does Aetrix verify that P4KE27CHE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE27CHE3/73 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 P4KE27CHE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE27CHE3/73?
All P4KE27CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE27CHE3/73, 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 P4KE27CHE3/73 part is unused and in its original packaging.
Return procedure for P4KE27CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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