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Vishay General Semiconductor - Diodes Division P4KE24-E3/73
- Part No.:
- P4KE24-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE24-E3/73.pdf
- Description:
- TVS DIODE 19.4VWM 34.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,872
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Product details
Overview
P4KE24-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 24 V breakdown voltage (VBR min/max = 22.8 V / 25.2 V), 20.5 V standoff voltage (VWM), 33.2 V clamping voltage at 12.0 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the P4KE24-E3/73 datasheet, P4KE24-E3/73 pinout, P4KE24-E3/73 application, or P4KE24-E3/73 equivalent, this device is selected for robust overvoltage protection in automotive sensor signal lines, industrial I/O interfaces, DC power rail conditioning, and MOSFET gate driver circuits where fast response (<1 ns), low clamping ratio (1.37×VWM), and AEC-Q101 qualification are required.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 20.5 V), then avalanches rapidly when transient voltage exceeds VBR, diverting surge current away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM).
The device complies with AEC-Q101 for automotive use and supports repetitive surge events at 0.01% duty cycle. Thermal resistance is 66 °C/W (junction-to-lead) and 100 °C/W (junction-to-ambient), enabling reliable operation up to 175 °C junction temperature with appropriate PCB copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA test current - defines precise avalanche onset range for predictable clamping behavior |
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 33.2 V at 12.0 A - clamping voltage during 400 W transient, limiting stress on protected ICs |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform, sufficient for ISO 7637-2 Pulse 1/2a/5a |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine), critical for power rail protection |
| TJ max | +175 °C - extended junction temperature enables under-hood automotive deployment without derating |
| RθJL | 66 °C/W - low thermal resistance allows effective heat transfer to PCB leads, supporting sustained surge duty |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or lower-potential node in unidirectional configuration; carries full surge current during clamping |
| Cathode | Avalanche junction terminal | Marked end; connected to protected line; determines polarity of clamping action and defines VWM/VBR reference |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 μA), and long-term reliability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Meets ISO 7637-2 and IEC 61000-4-5 Level 3 surge immunity requirements for automotive and industrial systems |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and body electronics |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage exposure to downstream ICs such as CAN transceivers and microcontrollers |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and UL 94 V-0 flammability for safety-critical assemblies |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bay environments subject to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between sensor output and ground, activated within <1 ns upon exceeding 20.5 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V ADC inputs by limiting transient voltage to ≤33.2 V during 400 W surges. |
Use Scenario: Safeguarding RS-485/RS-232 transceiver pins in factory automation PLC modules exposed to motor drive noise and ESD. IC Role / Device Role / Timing Role: Standoff-connected TVS on differential bus lines, conducting only during >22.8 V transients while maintaining signal integrity below VWM. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without adding series impedance or capacitance to data paths. |
| DC Power Rail Conditioning | MOSFET Gate Driver Protection |
Use Scenario: Clamping 12 V/24 V supply rails in telematics units and infotainment head units against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump). IC Role / Device Role / Timing Role: Parallel-connected TVS referenced to ground, absorbing energy via avalanche conduction during overvoltage events. Use Value: Sustains 40 A non-repetitive forward surge current without failure, preserving system uptime during battery disconnection events. |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers in BLDC motor controllers from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional clamp between gate and source, triggered only above 22.8 V. Use Value: Prevents gate oxide breakdown while introducing negligible delay (<1 ns) to PWM edge timing, maintaining motor efficiency. |
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 VBR, 600 W PPPM, 100 A IPPM, higher thermal mass but larger footprint | Better suited for higher-energy surges in industrial power supplies; less space-constrained than DO-41 layouts | Select SMBJ24A when board space permits and surge energy exceeds 400 W capability of P4KE24-E3/73 |
| 1.5KE24A | DO-201AD package, same VBR/VWM, 1500 W PPPM, 65.8 A IPPM, higher power but longer lead inductance | Preferred for telecom AC/DC front-end protection where higher single-pulse energy absorption is required | Choose 1.5KE24A for legacy designs requiring higher surge margin and compatibility with through-hole wave solder processes |
Compared with SMBJ24A and 1.5KE24A, the P4KE24-E3/73 offers optimal balance of compact DO-41 form factor, AEC-Q101 qualification, and 400 W surge capability-making it ideal for space-constrained automotive and embedded sensor nodes where standardized leaded packaging and automotive reliability are mandatory.
Availability
P4KE24-E3/73 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and DC power rail conditioning requiring stable component supply across production lifecycles.
Supply support for P4KE24-E3/73 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4KE24-E3/73 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments including automotive, industrial control, and telecommunications infrastructure.
FAQ
What is the breakdown voltage tolerance for P4KE24-E3/73?
The P4KE24-E3/73 has a specified breakdown voltage range of 22.8 V to 25.2 V at 1.0 mA test current, corresponding to a ±5 % tolerance around the nominal 24 V rating. This tight VBR window ensures consistent clamping performance across production lots and enables precise coordination with downstream overvoltage thresholds in protected circuits.
Is P4KE24-E3/73 suitable for automotive applications?
Yes, the P4KE24-E3/73 is AEC-Q101 qualified and manufactured with RoHS-compliant E3 plating meeting JESD 201 Class 1A whisker resistance. Its 175 °C maximum junction temperature, glass-passivated junction, and validated surge performance per ISO 7637-2 make it suitable for engine control, body electronics, and ADAS sensor protection in automotive systems.
What is the clamping voltage of P4KE24-E3/73 at its rated peak pulse current?
The P4KE24-E3/73 clamps to a maximum of 33.2 V at its rated peak pulse current of 12.0 A (10/1000 μs waveform). This VC value reflects worst-case device variation and provides a design margin for protecting 24 V-rated components such as CAN transceivers and microcontroller I/O pins against transient overstress.
Does P4KE24-E3/73 have bidirectional capability?
No, P4KE24-E3/73 is a unidirectional TVS diode, indicated by the absence of "CA" suffix. It conducts only in reverse bias above VBR; forward conduction occurs above ~3.5 V. For bidirectional protection, Vishay offers P4KE24CA with symmetrical clamping in both polarities.
What is the thermal resistance of P4KE24-E3/73 and how does it affect layout?
The P4KE24-E3/73 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W. To maintain safe junction temperatures during repeated surges, PCB layout must provide adequate copper area on both leads-minimum 10 mm² per lead recommended-to dissipate heat effectively and avoid thermal runaway during high-duty-cycle transients.
P4KE24-E3/73 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):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 11.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE24-E3/73 FAQ
1.How can I place an order for P4KE24-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE24-E3/73 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 P4KE24-E3/73 reliable?
The price and inventory of P4KE24-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE24-E3/73 is usually 5 days.
3.What payment methods are accepted for P4KE24-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE24-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE24-E3/73?
P4KE24-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE24-E3/73 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 P4KE24-E3/73?
For technical support, including P4KE24-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE24-E3/73 requirements.
6.How does Aetrix verify that P4KE24-E3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE24-E3/73 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 P4KE24-E3/73 meets industry standards.
7.What is the process for return or replacement of P4KE24-E3/73?
All P4KE24-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE24-E3/73, 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 P4KE24-E3/73 part is unused and in its original packaging.
Return procedure for P4KE24-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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