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Vishay General Semiconductor - Diodes Division P4KE12CAHE3/54
- Part No.:
- P4KE12CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE12CAHE3/54.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,893
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Product details
Overview
P4KE12CAHE3/54 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 12 V breakdown voltage (VBR min/max: 11.4–12.6 V), 10.2 V stand-off voltage (VWM), 16.7 V maximum clamping voltage at 24.0 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the P4KE12CAHE3/54 datasheet, P4KE12CAHE3/54 pinout, P4KE12CAHE3/54 application, or P4KE12CAHE3/54 equivalent, key selection considerations include bidirectional surge protection capability, AEC-Q101 qualification for automotive use, DO-41 mechanical compatibility, and clamping performance under 10/1000 μs transients in sensor interfaces and power rails.
Technical Context
This device operates as a voltage-clamping protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. It exhibits low incremental surge resistance and fast response time-critical for suppressing ESD and inductive switching spikes before sensitive downstream circuitry is damaged.
The P4KE12CAHE3/54 uses a glass-passivated junction and meets UL 94 V-0 flammability requirements. Its 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 or lead length management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V - Ensures consistent breakdown activation across production units at 1.0 mA test current |
| VWM | 10.2 V - Maximum continuous reverse working voltage without significant leakage (≤1.0 μA) |
| VC @ IPPM | 16.7 V at 24.0 A - Clamped voltage during 400 W transient, limiting stress on protected ICs |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform, supporting industrial-grade surge immunity |
| TJ max | +175 °C - Enables operation in under-hood automotive or high-temperature industrial environments |
| AEC-Q101 | Qualified - Validated for automotive electronics reliability including temperature cycling, HTRB, and ESD |
| Package | DO-41 (DO-204AL) - Standard axial-leaded through-hole package compatible with legacy PCB layouts and wave soldering |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; no polarity marking for bidirectional configuration - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Either terminal serves as input/output for bidirectional clamping; no cathode band marking required |
| Lead 1 | Junction connection point | Directly bonded to silicon die; primary thermal path to PCB copper or heatsink via lead |
| Lead 2 | Junction connection point | Second thermal and electrical path; both leads contribute to RθJL = 66 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability and moisture resistance versus non-passivated alternatives |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 3 (1 kV line-to-line) surge protection without derating |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure field performance |
| UL 94 V-0 molding compound | Prevents flame propagation during fault conditions, meeting safety standards for enclosed systems |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage exposure to protected MOSFET gates or microcontroller I/O pins |
Applications
| Automotive Sensor Protection | Industrial PLC Input 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 directly at connector interface to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under ±12 V transients while surviving repeated 400 W surges per ISO 7637-2 Pulse 5a. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against inductive kickback from solenoid valves and relays. IC Role / Device Role / Timing Role: Primary overvoltage suppression element across input terminals, operating in parallel with optocoupler input stage. Use Value: Limits clamped voltage to 16.7 V, ensuring input stage remains within absolute maximum ratings during 100 ms inductive spikes. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side transient suppression on 12 V output rails of AC/DC adapters used in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after DC-DC converter output filter to absorb coupling noise and lightning-induced surges. Use Value: Withstands 10.2 V continuous bias while clamping 1 kV/0.5 Ω ring wave surges to safe levels for downstream USB-PD controllers. |
Use Scenario: Front-end protection for Ethernet PHY interfaces and analog line drivers on telecom central office line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage clamping device on tip/ring lines, coordinated with gas discharge tube (GDT) for staged protection. Use Value: Fast response (<1 ns) and low VC ensure semiconductor-level protection before GDT fires, reducing let-through energy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Surface-mount SMB package (vs. axial DO-41); same VBR range and 600 W PPPM | Requires PCB redesign for SMT placement; better high-frequency performance due to lower parasitic inductance | Select when board space is constrained and automated assembly is preferred over through-hole |
| 1.5KE12CA | Higher 1500 W PPPM rating; larger DO-201 package; same VBR, VWM, and VC specs | Used where higher single-event surge margin is required (e.g., outdoor telecom equipment) | Choose when system-level testing requires >400 W headroom or legacy DO-201 footprint is mandated |
Compared with SMBJ12CA and 1.5KE12CA, the P4KE12CAHE3/54 offers optimal balance of proven DO-41 mechanical robustness, AEC-Q101 qualification, and cost-effective 400 W surge handling for mid-tier automotive and industrial designs-without requiring layout changes or premium packaging.
Availability
P4KE12CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, consumer power adapter outputs, and telecom line card protection requiring stable component supply and long-term lifecycle support.
Supply support for P4KE12CAHE3/54 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, and protection devices with emphasis on reliability and automotive-grade qualification.
The P4KE12CAHE3/54 belongs to the TRANSZORB® family of TVS diodes, engineered specifically for robust, standardized transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the polarity configuration of P4KE12CAHE3/54?
The P4KE12CAHE3/54 is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., P4KE12A), it has no cathode band marking and functions identically regardless of terminal orientation in the circuit. This makes it ideal for AC-coupled or differential signal lines where polarity reversal may occur.
Is P4KE12CAHE3/54 qualified for automotive applications?
Yes, the HE3 suffix indicates AEC-Q101 qualification. The P4KE12CAHE3/54 has undergone stress testing including high-temperature reverse bias, temperature cycling, and ESD per AEC-Q101 Rev D. It is approved for use in automotive body electronics, infotainment systems, and ADAS sensor modules where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of P4KE12CAHE3/54 under surge conditions?
The P4KE12CAHE3/54 clamps to a maximum of 16.7 V at its rated peak pulse current of 24.0 A (10/1000 μs waveform). This value is guaranteed across the full operating temperature range and ensures protected components-such as 12 V-rated microcontrollers or CAN transceivers-remain within their absolute maximum voltage limits during transient events.
How does the DO-41 package of P4KE12CAHE3/54 affect thermal performance?
The DO-41 package delivers a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W, allowing effective heat dissipation through the leads into PCB copper. When mounted with 10 mm lead length, its junction-to-ambient resistance is 100 °C/W. For sustained surge duty, designers should ensure adequate copper pour and avoid excessive trace impedance to maintain TJ ≤ 175 °C.
Can P4KE12CAHE3/54 replace unidirectional P4KE12A in existing designs?
No-P4KE12CAHE3/54 is not a drop-in replacement for P4KE12A. While both share identical VBR, VWM, and VC values, the unidirectional P4KE12A conducts only in reverse bias and requires correct cathode orientation. Substituting the bidirectional P4KE12CAHE3/54 may cause unintended conduction in forward-biased DC circuits, risking latch-up or power rail instability. Always verify circuit topology before interchange.
P4KE12CAHE3/54 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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)
P4KE12CAHE3/54 FAQ
1.How can I place an order for P4KE12CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE12CAHE3/54 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 P4KE12CAHE3/54 reliable?
The price and inventory of P4KE12CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE12CAHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE12CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE12CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE12CAHE3/54?
P4KE12CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE12CAHE3/54 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 P4KE12CAHE3/54?
For technical support, including P4KE12CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE12CAHE3/54 requirements.
6.How does Aetrix verify that P4KE12CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE12CAHE3/54 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 P4KE12CAHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE12CAHE3/54?
All P4KE12CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE12CAHE3/54, 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 P4KE12CAHE3/54 part is unused and in its original packaging.
Return procedure for P4KE12CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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