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Vishay General Semiconductor - Diodes Division P4KE24A-E3/54
- Part No.:
- P4KE24A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE24A-E3/54.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,703
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Product details
Overview
P4KE24A-E3/54 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 22.8 V to 25.2 V breakdown voltage (VBR) at 1.0 mA test current, 20.5 V stand-off voltage (VWM), 1.0 µA max reverse leakage at VWM, and clamps to ≤33.2 V at 12.0 A peak pulse current - used in automotive sensor line protection and industrial DC power rail surge suppression.
For engineers reviewing the P4KE24A-E3/54 datasheet, P4KE24A-E3/54 pinout, P4KE24A-E3/54 application, or P4KE24A-E3/54 equivalent, key selection criteria include unidirectional polarity, 400 W 10/1000 µs peak pulse power rating, DO-41 mechanical compatibility, AEC-Q101 qualification status, and thermal resistance (RθJL = 66 °C/W) for board-level thermal design.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with sensitive downstream circuitry. Its glass-passivated junction enables fast response (<1 ns) to ESD and lightning-induced transients, while its 10/1000 µs waveform-rated 400 W peak pulse power supports repetitive surge events at 0.01% duty cycle.
The unidirectional configuration provides forward conduction path during overvoltage events on positive-going transients only, with cathode marked by color band. Junction temperature range spans –55 °C to +175 °C, and thermal resistance from junction-to-lead is 66 °C/W - critical for derating under sustained ambient conditions above 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA - defines reliable conduction onset window for transient clamping |
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | ≤33.2 V at 12.0 A - clamped voltage seen by protected IC during worst-case 10/1000 µs surge |
| PPPM | 400 W - peak transient energy absorption capability per single 10/1000 µs pulse |
| RθJL | 66 °C/W - enables thermal derating calculations when lead temperature exceeds 75 °C |
| TJ max. | +175 °C - supports operation in under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band on unidirectional devices. Body diameter: 2.0–2.7 mm; lead diameter: 0.71–0.86 mm; overall length: ≥25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during positive transient overshoot |
| Cathode | Clamping reference terminal | Marked with color band; tied to higher-potential rail (e.g., VCC or signal high); defines clamping threshold |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables <1 ns response time and stable leakage performance across –55 °C to +175 °C |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity without derating |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| UL 94 V-0 compliant molding | Meets flammability requirements for enclosed industrial and transportation equipment |
| JESD 201 Class 1A whisker resistance | Ensures long-term solder joint integrity in high-reliability PCB assemblies |
Applications
| Automotive Sensor Protection | Industrial DC Power Rail |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping element placed between sensor output and ground, triggered only during positive voltage excursions exceeding 20.5 V. Use Value: Limits transient voltage to ≤33.2 V at 12 A, preventing damage to 24 V-rated signal conditioning ICs while maintaining low leakage (<1 µA) during normal operation. |
Use Scenario: Safeguarding 24 V DC input stages of PLC I/O modules and motor drive controllers against 10/1000 µs surges from relay coil flyback or field wiring faults. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, positioned upstream of bulk capacitors and LDO regulators. Use Value: Absorbs up to 400 W transient energy without failure, enabling compliance with IEC 61000-4-5 Ed. 3 surge immunity testing at ±1 kV. |
| Consumer Power Adapter Input | Telecom Line Interface |
Use Scenario: Secondary-side transient suppression in AC/DC adapters for smart home hubs and IoT gateways exposed to mains-borne noise and capacitor discharge events. IC Role / Device Role / Timing Role: Standoff-rated protector on 12–24 V DC output rails, activated only during abnormal overvoltage conditions. Use Value: Maintains 20.5 V working voltage margin below typical 24 V nominal output, ensuring no false triggering during line regulation ripple or startup overshoot. |
Use Scenario: Front-end protection for Ethernet PHY power supplies and auxiliary bias rails in telecom access equipment subjected to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Unidirectional shunt clamp on isolated DC bias lines feeding magnetics and common-mode chokes. Use Value: Withstands repeated 400 W pulses at 0.01% duty cycle, supporting multi-event surge testing required for GR-1089-CORE compliance. |
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; 600 W PPPM; 24.2–26.8 V VBR; RθJA = 40 °C/W | Higher power rating but larger footprint; better thermal dissipation on open-board layouts | Select SMBJ24A when board space allows and >400 W surge margin is required; not drop-in due to different package and pin spacing |
| 1.5KE24A | DO-201AD package; 1500 W PPPM; 22.8–25.2 V VBR; 1.5 W PD; TJ max = 175 °C | Higher surge capacity but longer response time (~5 ns); requires larger PCB pad area | Choose 1.5KE24A for legacy designs requiring higher single-pulse robustness; incompatible pinout and thermal profile vs. P4KE24A-E3/54 |
Compared with SMBJ24A and 1.5KE24A, P4KE24A-E3/54 offers optimal balance of compact DO-41 form factor, AEC-Q101 qualification, and precise 20.5 V standoff for 24 V systems - making it preferred for space-constrained automotive and industrial control modules where qualification and footprint are prioritized over ultra-high pulse power.
Availability
P4KE24A-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial 24 V DC power rails, and telecom auxiliary supply protection requiring stable component supply across extended production lifecycles.
Supply support for P4KE24A-E3/54 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The P4KE series delivers standardized TVS protection across 6.8 V to 540 V standoff ranges, engineered specifically for cost-sensitive, high-volume applications demanding AEC-Q101 compliance and UL 94 V-0 safety certification.
FAQ
What is the polarity configuration of P4KE24A-E3/54?
P4KE24A-E3/54 is a unidirectional TVS diode, meaning it clamps only positive-going transients relative to its cathode terminal. The cathode is marked by a color band on the DO-41 body. Unlike bidirectional variants (e.g., P4KE24CA), it does not conduct symmetrically - forward conduction occurs from anode to cathode during overvoltage events, making it suitable for DC rail and single-polarity signal line protection.
Does P4KE24A-E3/54 meet automotive reliability standards?
Yes, P4KE24A-E3/54 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias, temperature cycling, and ESD per JESD22-A114. This qualification confirms suitability for automotive applications such as body control modules, sensor interfaces, and infotainment power supplies where long-term reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of P4KE24A-E3/54 under surge conditions?
The maximum clamping voltage (VC) of P4KE24A-E3/54 is 33.2 V at 12.0 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs rated for ≤36 V absolute maximum survive surge exposure.
Can P4KE24A-E3/54 be used in bidirectional signal line protection?
No, P4KE24A-E3/54 is unidirectional and unsuitable for bidirectional AC or differential signal lines (e.g., RS-485, USB D+/D−). For such applications, use the bidirectional variant P4KE24CA, which clamps symmetrically in both directions and has no polarity marking. Substituting P4KE24A-E3/54 in place of a bidirectional TVS risks failure to suppress negative transients and potential damage to connected circuitry.
What is the thermal resistance specification for P4KE24A-E3/54?
P4KE24A-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, measured with lead length of 10 mm. This parameter governs how effectively heat generated during surge events transfers from the silicon junction to the PCB copper pour or heatsink via the leads. It is essential for calculating allowable surge repetition rate and verifying safe operation at elevated ambient temperatures per Figure 2 in the Vishay datasheet.
P4KE24A-E3/54 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
P4KE24A-E3/54 FAQ
1.How can I place an order for P4KE24A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE24A-E3/54 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 P4KE24A-E3/54 reliable?
The price and inventory of P4KE24A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE24A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE24A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE24A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE24A-E3/54?
P4KE24A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE24A-E3/54 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 P4KE24A-E3/54?
For technical support, including P4KE24A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE24A-E3/54 requirements.
6.How does Aetrix verify that P4KE24A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE24A-E3/54 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 P4KE24A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE24A-E3/54?
All P4KE24A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE24A-E3/54, 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 P4KE24A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE24A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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