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Vishay General Semiconductor - Diodes Division P4KE43CAHE3/54
- Part No.:
- P4KE43CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE43CAHE3/54.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,518
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Product details
Overview
P4KE43CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features 400 W peak pulse power (10/1000 μs), 43 V breakdown voltage (min 40.9 V, max 45.2 V at 1 mA), and clamps to ≤59.3 V at 6.7 A peak pulse current. Used in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the P4KE43CAHE3/54 datasheet, P4KE43CAHE3/54 pinout, P4KE43CAHE3/54 application, or P4KE43CAHE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical dimensions, clamping performance under standardized surge waveforms, and direct alternatives with documented parameter divergence.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its standoff voltage (VWM = 36.8 V). Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting MOSFET gates and microcontroller I/O pins against ESD and inductive switching spikes.
Rated for 175 °C maximum junction temperature and qualified to AEC-Q101, P4KE43CAHE3/54 supports automotive-grade reliability without derating up to 125 °C ambient. The DO-41 package provides 1.5 W steady-state power dissipation at TL = 75 °C and meets UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines precise clamping onset threshold for bidirectional surge suppression |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | ≤59.3 V at 6.7 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak transient power handling capability per single 10/1000 μs pulse |
| IPPM | 6.7 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ max | 175 °C - enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; no polarity marking for bidirectional configuration; body length 25.4 mm min, lead diameter 0.71–0.86 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No cathode band; terminals interchangeable - conducts identically in either direction above VBR |
| Lead 1 / Lead 2 | External connection points | Matte tin-plated, solderable per J-STD-002; supports 275 °C solder dip (10 s max) |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables <1 ns response time and stable VBR over lifetime, critical for ESD immunity in sensor interfaces |
| 400 W peak pulse power (10/1000 μs) | Handles repetitive inductive switch-off surges in 12 V/24 V automotive systems without thermal runaway |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics where field reliability is non-negotiable |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed control modules meeting IEC 60730 and ISO 16750-2 requirements |
| JESD 201 Class 2 whisker resistance | Eliminates tin whisker risk in long-life industrial controllers operating >10 years at elevated temperature |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient excursions. Use Value: Clamps 400 W surges to ≤59.3 V while maintaining 36.8 V working voltage - preserves signal integrity and avoids false triggering of protected ICs. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to relay coil back-EMF and field wiring transients. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input circuits, absorbing repetitive 10/1000 μs pulses from inductive loads. Use Value: Withstands 400 W peak pulses at 0.01% duty cycle and maintains <1 μA leakage at 36.8 V - ensures low-power sleep mode compatibility. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to lightning-induced surges on DC output rails. IC Role / Device Role / Timing Role: Clamp device across +VOUT/GND to shunt surge energy before it reaches DC-DC controller or USB-PD IC. Use Value: 175 °C max junction temperature allows placement near hot components; DO-41 footprint fits compact adapter PCB layouts. |
Use Scenario: Protecting Ethernet PHY interface pins and RS-485 transceivers from induced surges on outdoor telecom cabling. IC Role / Device Role / Timing Role: Bidirectional TVS placed between differential pairs (e.g., TX+/TX−) and chassis ground. Use Value: Symmetric clamping ensures equal protection for both polarities of fast-rising transients - essential for full-duplex communication links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Same VBR range (40.9–45.2 V), but SMC (DO-214AB) package; 600 W PPPM; higher IPPM (13.9 A) | Higher power handling suits 48 V industrial buses; larger footprint requires PCB redesign | Select when surge energy exceeds 400 W or board space permits SMC package |
| 1.5KE43CA | Same DO-41 package, identical VBR/VC, but 1500 W PPPM and 38.4 A IPPM | Designed for primary-side AC line protection; higher capacitance may affect high-speed signal integrity | Choose only for high-energy AC mains or transformer-coupled surge scenarios - not for signal-line use |
Compared with SMBJ43CA and 1.5KE43CA, P4KE43CAHE3/54 offers optimal balance of AEC-Q101 qualification, DO-41 footprint compatibility, and 400 W surge rating - making it the preferred choice for space-constrained automotive and industrial signal-line protection where reliability and legacy layout reuse are critical.
Availability
P4KE43CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, consumer power adapters, and telecom line interfaces requiring stable component supply across multi-year production cycles.
Supply support for P4KE43CAHE3/54 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and automotive-grade qualification.
P4KE43CAHE3/54 belongs to the TRANSZORB® family of transient suppressors engineered specifically for robust, bidirectional clamping in harsh electromagnetic environments - targeting automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance for P4KE43CAHE3/54?
The breakdown voltage (VBR) of P4KE43CAHE3/54 is specified from 40.9 V to 45.2 V at 1 mA test current, representing a ±5% tolerance band around the nominal 43 V rating. This tight distribution ensures consistent clamping behavior across production lots and supports reliable system-level surge margin calculations in designs using P4KE43CAHE3/54.
Is P4KE43CAHE3/54 suitable for automotive applications?
Yes, P4KE43CAHE3/54 is AEC-Q101 qualified and rated for operation from −55 °C to +175 °C junction temperature, making it suitable for under-hood and cabin-mounted automotive electronics. Its DO-41 package, glass-passivated junction, and bidirectional clamping response meet ISO 7637-2 and ISO 16750-2 transient immunity requirements when applied per Vishay's recommended layout guidelines for P4KE43CAHE3/54.
What does the "HE3" suffix indicate in P4KE43CAHE3/54?
The "HE3" suffix in P4KE43CAHE3/54 denotes RoHS-compliant construction with JESD 201 Class 2 whisker resistance and AEC-Q101 qualification. It distinguishes this automotive-grade variant from the commercial "E3" version (e.g., P4KE43CAE3/54), confirming enhanced reliability testing for mission-critical applications where long-term tin whisker mitigation is mandatory - a key specification for P4KE43CAHE3/54.
How does P4KE43CAHE3/54 differ from unidirectional P4KE43A variants?
P4KE43CAHE3/54 is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas P4KE43A is unidirectional with a cathode band and forward voltage drop (~3.5 V). The "CA" suffix confirms bidirectional functionality, enabling use on AC-coupled or differential signal lines where polarity reversal occurs - a fundamental distinction that determines correct circuit placement for P4KE43CAHE3/54.
What is the maximum clamping voltage of P4KE43CAHE3/54 under surge conditions?
The maximum clamping voltage (VC) of P4KE43CAHE3/54 is 59.3 V at 6.7 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed across temperature and lot variations, and defines the upper voltage limit imposed on protected circuitry during transient events - a critical parameter for ensuring safe operation of downstream ICs rated for ≤60 V absolute maximum in designs using P4KE43CAHE3/54.
P4KE43CAHE3/54 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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)
P4KE43CAHE3/54 FAQ
1.How can I place an order for P4KE43CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE43CAHE3/54 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 P4KE43CAHE3/54 reliable?
The price and inventory of P4KE43CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE43CAHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE43CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE43CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE43CAHE3/54?
P4KE43CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE43CAHE3/54 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 P4KE43CAHE3/54?
For technical support, including P4KE43CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE43CAHE3/54 requirements.
6.How does Aetrix verify that P4KE43CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE43CAHE3/54 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 P4KE43CAHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE43CAHE3/54?
All P4KE43CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE43CAHE3/54, 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 P4KE43CAHE3/54 part is unused and in its original packaging.
Return procedure for P4KE43CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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