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Taiwan Semiconductor Corporation P4KE91CA
- Part No.:
- P4KE91CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE91CA.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,714
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Product details
Overview
P4KE91CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 91V nominal breakdown voltage, 400W peak pulse power rating at 10/1000μs, clamping voltage of 131V at 3.2A peak pulse current, and DO-204AL (DO-41) axial package - used in automotive lighting control modules to protect CAN transceivers from load dump and EFT events.
For engineers reviewing the P4KE91CA datasheet, P4KE91CA pinout, P4KE91CA application, or P4KE91CA equivalent, key selection criteria include bidirectional clamping capability, low leakage (<1μA at 73.7V), fast response time (<5ns), UL recognition (E-326243), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P4KE91CA operates as a voltage-clamped avalanche diode with symmetrical bidirectional conduction - enabling protection against both positive and negative polarity transients without external polarity management. Its VBR min/max of 81.9V–100V at 1mA IT and VC of 131V at IPPM = 3.2A define its clamping window under standardized 10/1000μs surge conditions.
Thermal performance is governed by a 175°C maximum junction temperature and derated steady-state power dissipation (1W at TL = 75°C on 5×5 mm copper pads). The device exhibits a +0.106%/°C VBR temperature coefficient and meets JESD201 Class 2 whisker resistance and RoHS/halogen-free compliance per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1mA | 81.9V min to 100V max - defines reliable turn-on threshold for transient suppression |
| VWM | 73.7V - maximum continuous reverse operating voltage before leakage exceeds 1μA |
| VC @ IPPM=3.2A | 131V - clamped voltage during 10/1000μs surge, limiting downstream IC stress |
| PPK | 400W - peak pulse power handling per ANSI/IEEE C62.35 standard waveform |
| IR @ VWM | <1μA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | 175°C - supports operation in under-hood automotive environments without thermal shutdown |
| Package | DO-204AL (DO-41) - industry-standard axial leaded package with UL 94V-0 molding compound |
Pinout & Package
DO-204AL (DO-41) axial package with cathode band marking omitted (bidirectional symmetry); leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Weight: 0.300g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity dependency - either terminal serves as input/output for ± transient suppression |
| Lead 1 / Lead 2 | Current path terminals | Low-inductance axial connection for direct placement across protected line and ground |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity alignment |
| 400W surge rating (10/1000μs) | Withstands automotive load dump and ISO 7637-2 Pulse 5a surges without degradation |
| Response time <5ns | Clamps transients before sensitive logic or analog circuitry experiences overvoltage damage |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| UL Recognized (E-326243) | Meets safety requirements for end-equipment certification in industrial and transportation systems |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers in headlamp modules from alternator load dump and inductive switching spikes. IC Role / Device Role: Bidirectional TVS placed across VCC-GND rail to clamp surges up to 131V. Use Value: Prevents latch-up or permanent damage to 5V/3.3V logic while maintaining <1μA leakage at 73.7V working voltage. | Use Scenario: Safeguarding 24V digital input channels in programmable logic controllers against EFT bursts and field-wiring faults. IC Role / Device Role: Parallel-connected TVS absorbing 400W pulses induced by relay coil de-energization. Use Value: Ensures immunity to IEC 61000-4-4 Level 4 (4kV) transients without requiring additional series impedance. |
| USB-C Power Delivery Interface | Smart Meter Communication Lines |
Use Scenario: Shielding USB-C CC and VCONN lines from ESD and hot-swap surges during plug insertion. IC Role / Device Role: Low-capacitance bidirectional clamp limiting voltage to 131V while preserving signal integrity. Use Value: Maintains USB 2.0 data rate compatibility due to absence of added filtering components or layout constraints. | Use Scenario: Protecting RS-485 transceivers in utility smart meters from lightning-induced surges on long outdoor communication cables. IC Role / Device Role: Primary surge suppression stage before secondary GDT or MOV-based protection. Use Value: Delivers precise 131V clamping to prevent transceiver latch-up while surviving repeated 10/1000μs surges per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ90CA | Same 90V nominal, 400W rating, but SMA package (surface-mount); VBR 81–89.1V, VC 129V @ 3.2A | Requires PCB rework for SMT vs. through-hole DO-41; lower thermal mass limits repetitive surge duty cycle | Select when board space is constrained and automated assembly is prioritized over manual repairability |
| ON Semiconductor 1.5KE91CA | Higher 1500W rating, same DO-204AL package; VBR 81.9–100V, VC 131V @ 11.9A - significantly higher IPPM | Overqualified for 400W use cases; larger junction capacitance may affect high-speed signal lines | Select only when system-level surge testing exceeds IEC 61000-4-5 Level 4 and requires margin beyond 400W |
Compared with SMAJ90CA and 1.5KE91CA, the P4KE91CA offers optimal balance of through-hole serviceability, AEC-Q101 qualification, and precise 400W surge handling - making it preferred for cost-sensitive automotive and industrial designs where footprint and qualification align.
Availability
P4KE91CA is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, USB-C power delivery interfaces, and smart meter communication lines requiring stable component supply and long-term lifecycle support.
Supply support for P4KE91CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs - headquartered in Hsinchu, Taiwan.
The P4KE series targets cost-effective, high-reliability transient protection for automotive, industrial, and consumer applications - emphasizing AEC-Q101 qualification, UL recognition, and broad voltage coverage from 6.8V to 440V.
FAQ
What is the breakdown voltage range of the P4KE91CA?
The P4KE91CA has a specified breakdown voltage (VBR) range of 81.9V minimum to 100V maximum at a test current (IT) of 1mA. This range ensures consistent clamping behavior across production lots and temperature variations, and is measured per ANSI/IEEE C62.35 standards. The P4KE91CA's VBR tolerance supports robust design margins in 24V and 48V automotive and industrial systems.
Is the P4KE91CA suitable for automotive applications?
Yes, the P4KE91CA is AEC-Q101 qualified and explicitly rated for automotive use - including under-hood environments with operating junction temperatures up to 175°C. Its bidirectional architecture, UL recognition (E-326243), and compliance with ISO 7637-2 Pulse 5a make the P4KE91CA appropriate for protecting ECUs, lighting modules, and infotainment power supplies against load dump and EFT events.
What is the clamping voltage of the P4KE91CA under surge conditions?
The P4KE91CA clamps to a maximum of 131V when subjected to its rated peak pulse current of 3.2A under the standardized 10/1000μs waveform. This VC value is guaranteed across temperature and process variation, and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring safe operation of downstream 100V-rated capacitors and 3.3V/5V logic ICs.
Does the P4KE91CA have polarity markings?
No, the P4KE91CA does not have polarity markings because it is a bidirectional TVS diode - functionally symmetric with identical electrical characteristics in both directions. Unlike unidirectional P4KE91A variants, the "CA" suffix indicates center-tapped or symmetrical construction, eliminating the need for cathode band identification during placement. This simplifies layout and reduces assembly errors in AC or floating-line protection schemes.
What packaging options are available for the P4KE91CA?
The P4KE91CA is supplied in DO-204AL (DO-41) axial package with two standard packing formats: 5,000 pieces per tape-and-reel (P4KE91CAH) and 3,000 pieces per ammo box (P4KE91CAA0G). Both versions feature pure tin-plated leads compliant with J-STD-002 solderability requirements and JESD201 Class 2 whisker resistance - ensuring long-term reliability in wave and selective solder processes. The P4KE91CA itself is the base orderable part number.
P4KE91CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 3.3A
- 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)
P4KE91CA FAQ
1.How can I place an order for P4KE91CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE91CA 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 P4KE91CA reliable?
The price and inventory of P4KE91CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE91CA is usually 5 days.
3.What payment methods are accepted for P4KE91CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE91CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE91CA?
P4KE91CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE91CA 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 P4KE91CA?
For technical support, including P4KE91CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE91CA requirements.
6.How does Aetrix verify that P4KE91CA is sourced from the original manufacturer or authorized distributors?
All P4KE91CA 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 P4KE91CA meets industry standards.
7.What is the process for return or replacement of P4KE91CA?
All P4KE91CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE91CA, 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 P4KE91CA part is unused and in its original packaging.
Return procedure for P4KE91CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE91CA Tags
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