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Taiwan Semiconductor Corporation P4KE91C
- Part No.:
- P4KE91C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE91C.pdf
- Description:
- 400W, 91V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,709
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Product details
Overview
P4KE91C 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 waveform, clamping voltage of 131V at 3.2A peak pulse current, and operates across -55°C to +175°C junction temperature range - deployed in automotive lighting control modules to safeguard CAN transceivers against load dump and EFT events.
For engineers reviewing the P4KE91C datasheet, P4KE91C pinout, P4KE91C application, or P4KE91C equivalent, key selection criteria include its bidirectional polarity, DO-41 package compatibility, low leakage (<1μA @ 73.7V), fast clamping response (<5ns), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P4KE91C implements a silicon avalanche diode structure optimized for unidirectional and bidirectional transient suppression. Its bidirectional configuration enables symmetrical clamping in AC-coupled circuits without polarity dependency, while maintaining consistent VBR min/max (81.9V–100V) and VC (131V) under standardized 10/1000μs surge conditions.
It meets ANSI/IEEE C62.35 surge immunity standards with a 0.106%/°C VBR temperature coefficient, supports 40A IFSM surge current, and achieves <1μA reverse leakage above 73.7V working stand-off voltage - enabling robust protection in 24V/48V industrial and automotive power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 81.9V / 100V - defines guaranteed clamping onset window under 1mA test current; ensures reliable turn-on before downstream IC damage thresholds. |
| VWM | 73.7V - maximum continuous DC or RMS voltage the device blocks without significant leakage; sets system operating margin below breakdown. |
| VC @ IPPM | 131V at 3.2A - peak clamped voltage during 10/1000μs surge; determines worst-case overvoltage seen by protected circuitry. |
| PPK | 400W - peak pulse power handling per single 10/1000μs event; defines energy absorption capacity without failure. |
| ID @ VWM | <1μA - ultra-low reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max | +175°C - maximum junction temperature; enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Package | DO-204AL (DO-41) - industry-standard axial-leaded package with tin-plated leads compliant to J-STD-002; supports wave and hand soldering. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, molded epoxy case meeting UL 94V-0 flammability rating; cathode band marking denotes polarity for unidirectional variants only - P4KE91C is bidirectional and has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Both terminals function identically; no fixed anode/cathode - enables placement without orientation concern in AC or floating circuits. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and body electronics per stress test requirements. |
| 400W surge capability | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surges without degradation. |
| Clamping response <5ns | Ensures suppression activation before transient energy couples into sensitive analog or communication IC inputs. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained designs. |
| UL recognition E-326243 | Confirms safety compliance for end-equipment certification in North American markets. |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and MOSFET gate drivers in headlamp modules subjected to load dump (ISO 16750-2) and jump-start transients. IC Role / Device Role: Primary clamping element placed across 24V supply rail upstream of DC-DC converters and gate drivers. Use Value: Limits rail voltage to ≤131V during 120V/200ms load dump events, preventing latch-up or oxide rupture in 30V-rated FETs and controllers. |
Use Scenario: Shielding 24V digital input channels on programmable logic controllers from inductive kickback and EFT bursts (IEC 61000-4-4). IC Role / Device Role: Bidirectional TVS mounted between field input and optocoupler input stage. Use Value: Clamps ±1kV EFT bursts to <131V within 5ns, preserving signal integrity and avoiding false triggering of microcontroller GPIOs. |
| Telecom Power Interface | Medical Equipment Auxiliary Supply |
Use Scenario: Safeguarding PoE-powered Ethernet switch ports against lightning-induced surges on 48V DC bias lines. IC Role / Device Role: Secondary-level TVS on DC feed line after primary gas discharge tube (GDT) stage. Use Value: Absorbs residual 400W energy after GDT crowbarring, limiting voltage to 131V to protect IEEE 802.3af/at PD interface ICs. |
Use Scenario: Protecting isolated 24V auxiliary supplies in diagnostic imaging systems from ESD and switching noise. IC Role / Device Role: Final-stage TVS on secondary-side output before linear regulators feeding analog sensor front-ends. Use Value: Maintains <1μA leakage at 73.7V, eliminating offset drift in precision ADC reference paths while suppressing 15kV HBM ESD. |
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 DO-214AC (SMA) package; 90V VBR min/max (81–99V); 400W PPK; slightly lower VC (129V @ 3.3A). | Surface-mount footprint requires PCB redesign; better thermal performance in high-density layouts. | Select when board space is constrained and reflow assembly is preferred over through-hole. |
| ON Semiconductor 1.5KE91CA | Higher PPK (1500W); larger DO-201AE (DO-27) package; VBR 81.9–100V; VC 131V @ 11.5A. | Handles multi-pulse or longer-duration surges; suited for main power entry rather than point-of-load protection. | Choose for primary-level protection where higher energy absorption is required and board area permits larger package. |
Compared with P4KE91C, SMAJ90CA offers SMT compatibility but demands layout change, while 1.5KE91CA delivers 3.6× higher surge energy handling in a larger through-hole package - making P4KE91C optimal for cost-sensitive, space-constrained, and AEC-Q101–mandated secondary-level protection.
Availability
P4KE91C is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, and telecom power interface applications requiring stable component supply, long-term lifecycle support, and AEC-Q101–qualified reliability.
Supply support for P4KE91C 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 - serving automotive, industrial, and consumer markets since 1979.
The P4KE series targets cost-effective, high-reliability transient suppression in harsh-environment applications; engineered for AEC-Q101 compliance, wide temperature operation, and consistent clamping performance across voltage grades.
FAQ
What is the polarity configuration of P4KE91C?
P4KE91C is a bidirectional TVS diode, meaning it functions identically in both directions - no anode or cathode designation applies. This allows placement without orientation concerns in AC-coupled or floating circuits, unlike unidirectional variants such as P4KE91A which require correct polarity alignment. The device's symmetrical VBR and VC specifications confirm its bidirectional design.
Does P4KE91C meet AEC-Q101 qualification?
Yes, P4KE91C is AEC-Q101 qualified - confirmed by Taiwan Semiconductor's ordering code suffix "C" and documentation in the P4KE series datasheet (Version N2104). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for automotive powertrain, chassis, and body electronics applications.
What is the maximum clamping voltage of P4KE91C under surge conditions?
The maximum clamping voltage (VC) of P4KE91C is 131V at 3.2A peak pulse current (IPPM), measured under the standard 10/1000μs double-exponential waveform. This value represents the highest voltage the device allows across protected circuitry during a defined surge event - critical for ensuring downstream components remain within their absolute maximum ratings.
Can P4KE91C be used in place of P4KE91A?
No - P4KE91C and P4KE91A are not interchangeable. P4KE91C is bidirectional with symmetrical characteristics, while P4KE91A is unidirectional and requires correct polarity installation. Substituting one for the other risks open-circuit failure under reverse surge or improper clamping behavior. Always match the suffix: "C" for bidirectional, "A" for unidirectional, "H" for AEC-Q101 enhanced.
What is the reverse leakage current specification for P4KE91C at its working voltage?
P4KE91C exhibits ≤1μA reverse leakage current (ID) at its working stand-off voltage (VWM) of 73.7V, tested at TA = 25°C. This ultra-low leakage preserves system efficiency in battery-powered or low-power standby modes and prevents false triggering in high-impedance sensing circuits - a key advantage over older TVS families with higher ID values.
P4KE91C 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):
- 73.7V
- Voltage - Breakdown (Min):
- 81.9V
- Voltage - Clamping (Max) @ Ipp:
- 131V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- 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)
P4KE91C FAQ
1.How can I place an order for P4KE91C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE91C 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 P4KE91C reliable?
The price and inventory of P4KE91C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE91C is usually 5 days.
3.What payment methods are accepted for P4KE91C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE91C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE91C?
P4KE91C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE91C 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 P4KE91C?
For technical support, including P4KE91C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE91C requirements.
6.How does Aetrix verify that P4KE91C is sourced from the original manufacturer or authorized distributors?
All P4KE91C 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 P4KE91C meets industry standards.
7.What is the process for return or replacement of P4KE91C?
All P4KE91C units undergo pre-shipment inspection (PSI). If there is an issue with P4KE91C, 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 P4KE91C part is unused and in its original packaging.
Return procedure for P4KE91C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE91C Tags
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