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Taiwan Semiconductor Corporation P6KE91C
- Part No.:
- P6KE91C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE91C.pdf
- Description:
- 600W, 91V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,223
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Product details
Overview
P6KE91C from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 91 V, clamps transients to ≤131 V at 4.8 A peak surge current, and delivers sub-nanosecond response time (<1.0 ps from 0 V to VBR). It is used in automotive body electronics, industrial PLC I/O modules, and AC/DC adapter input stages.
For engineers reviewing the P6KE91C datasheet, P6KE91C pinout, P6KE91C application, or P6KE91C equivalent, key selection criteria include its 91 V standoff compatibility with 72–96 V nominal systems, DO-204AC (DO-15) through-hole package suitability for high-reliability board mounting, UL 94V-0 molding compound compliance, and AEC-Q101 qualification status (note: P6KE91C is not AEC-Q101 qualified per ordering code - only P6KE91CH variants are).
Technical Context
The P6KE91C operates as a silicon avalanche diode optimized for unidirectional clamping. Its junction structure enables low dynamic impedance (typical <0.5 Ω during clamping), fast turn-on (≤1.0 ps response), and stable breakdown voltage with ±5% tolerance (81.9–100 V min/max VBR at 1 mA test current). It sustains 600 W non-repetitive peak pulse power under standardized 10/1000 µs waveform conditions.
Thermal performance is defined by a 175 °C maximum junction temperature and derating above 25 °C ambient per Fig.2. The device exhibits <1 µA reverse leakage at 73.7 V (VWM) and a temperature coefficient of VBR of +0.106 %/°C - critical for stability across automotive (-40 to +125 °C operating range) and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 81.9 V / 100 V at 1 mA - defines reliable conduction onset window for overvoltage detection |
| VWM | 73.7 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPP | 131 V at 4.8 A - clamping voltage limiting downstream circuit stress during 10/1000 µs surge |
| PPK | 600 W - peak pulse power handling capability per standard IEEE C62.35 waveform |
| IR @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJMAX | 175 °C - supports operation in under-hood automotive and high-temperature industrial enclosures |
| Package | DO-204AC (DO-15) - industry-standard axial-leaded package with 0.400 g mass and tin-plated leads |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case meeting UL 94V-0 flammability rating. Cathode indicated by band marking; anode is unmarked lead. Leads are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked lead) | Current entry terminal during forward conduction | Connected to system ground or low-side return path in unidirectional TVS configuration |
| Cathode (banded lead) | Clamping output terminal during reverse avalanche | Connected to protected line (e.g., 24 V rail or CAN-H); conducts surge current to ground when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W surge rating (10/1000 µs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges without derating |
| Sub-1 ps response time | Clamps ESD and fast transients before sensitive ICs (e.g., microcontrollers, CAN transceivers) experience overstress |
| Low dynamic impedance | Maintains tight clamping window (VC − VBR = ~50 V) to limit energy delivered to protected load |
| UL 94V-0 mold compound | Meets flame-retardancy requirements for industrial control panels and automotive junction boxes |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protects 12 V/24 V supply inputs from load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of LDOs and MCU power pins. Use Value: Limits transient voltage to ≤131 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic supplies. |
Use Scenario: Shields 24 V digital input optocoupler front-end from field-wiring induced surges (IEC 61000-4-4/5). IC Role / Device Role / Timing Role: First-line transient absorber before series current-limiting resistor and opto-LED. Use Value: Absorbs up to 600 W without failure, enabling Class 3 immunity compliance without additional crowbar circuitry. |
| AC/DC Adapter Secondary-Side Output | Smart Lighting Driver Power Rail |
|
Use Scenario: Guards regulated 12 V/15 V output against back-EMF from connected motor loads or cable discharge events. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to common ground on DC output bus. Use Value: Clamps within 1.0 ps to prevent overshoot beyond 131 V, preserving electrolytic capacitor lifetime and secondary-side controller reliability. |
Use Scenario: Safeguards constant-current LED driver ICs from inductive kickback during dimming MOSFET switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output terminals to shunt flyback energy. Use Value: Handles repetitive 10/1000 µs surges up to 4.8 A peak, eliminating need for snubber RC networks in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ90A | Same DO-214AC (SMA) package; 90 V VBR (min 85.5 V), 125 V VC @ 4.8 A, 400 W rating | Lower power rating and smaller footprint - suitable for space-constrained PCBs but not direct replacement for 600 W requirement | Select if board area is limited and surge energy is ≤400 W; verify thermal margin in enclosed enclosures |
| ON Semiconductor 1.5KE91A | DO-201AD package; identical 91 V VBR range (81.9–100 V), same 131 V VC, 1500 W rating (10/1000 µs) | Higher surge capacity and larger case - requires different pad layout and higher mounting torque | Choose for mission-critical systems needing >600 W headroom or extended surge repetition capability |
Compared with SMAJ90A and 1.5KE91A, the P6KE91C offers optimal balance of 600 W surge handling, DO-204AC mechanical robustness, and proven field reliability in automotive and industrial 24 V systems - without requiring PCB redesign or thermal derating compromises.
Availability
P6KE91C is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and smart lighting driver designs requiring stable component supply and long-term lifecycle support.
Supply support for P6KE91C 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The P6KE Series belongs to TSC's high-reliability TVS portfolio engineered specifically for unidirectional DC rail protection in harsh environments - emphasizing low clamping ratio, AEC-Q101 qualification (for designated variants), and consistent parametric stability across temperature.
FAQ
What is the maximum clamping voltage of the P6KE91C under surge conditions?
The P6KE91C clamps to a maximum of 131 V when subjected to its rated 4.8 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C and represents the upper limit of voltage seen by downstream components during transient events - critical for ensuring compatibility with 100 V-rated capacitors and 130 V max-input regulators in 24 V systems.
Is the P6KE91C AEC-Q101 qualified?
No, the P6KE91C is not AEC-Q101 qualified. Per Taiwan Semiconductor's ordering information, only variants with the "H" suffix (e.g., P6KE91CH) meet AEC-Q101 requirements. The base P6KE91C is intended for industrial and commercial applications where automotive-grade qualification is not mandated, though it shares identical electrical and thermal specifications with its qualified counterpart.
What is the reverse leakage current of the P6KE91C at its maximum working voltage?
At its maximum steady-state reverse working voltage (VWM) of 73.7 V, the P6KE91C exhibits a maximum reverse leakage current (IR) of 1 µA at TA = 25 °C. This ultra-low leakage ensures minimal power loss in always-on circuits and preserves signal integrity in high-impedance sensing nodes - a key advantage over higher-leakage alternatives like Zener-based protectors.
Can the P6KE91C be used in bidirectional configurations?
No, the P6KE91C is a unidirectional TVS diode and must not be used for bidirectional protection. Its cathode band marking indicates polarity-sensitive operation. For bidirectional applications (e.g., RS-485, CAN bus), use the P6KE91CA variant - which features symmetrical breakdown in both directions and identical clamping performance, but distinct internal construction and marking.
What is the thermal derating behavior of the P6KE91C above 25 °C ambient?
The P6KE91C follows a linear derating curve starting at 25 °C ambient: peak pulse power decreases by approximately 0.67% per °C rise, reaching ~50% of rated 600 W at 100 °C ambient. This derating is defined in Fig.2 of the datasheet and must be applied when designing for high-temperature enclosures or densely packed boards where local ambient exceeds 25 °C - ensuring safe operation within the 175 °C TJMAX limit.
P6KE91C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- 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):
- 4.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE91C FAQ
1.How can I place an order for P6KE91C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE91C 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 P6KE91C reliable?
The price and inventory of P6KE91C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE91C is usually 5 days.
3.What payment methods are accepted for P6KE91C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE91C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE91C?
P6KE91C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE91C 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 P6KE91C?
For technical support, including P6KE91C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE91C requirements.
6.How does Aetrix verify that P6KE91C is sourced from the original manufacturer or authorized distributors?
All P6KE91C 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 P6KE91C meets industry standards.
7.What is the process for return or replacement of P6KE91C?
All P6KE91C units undergo pre-shipment inspection (PSI). If there is an issue with P6KE91C, 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 P6KE91C part is unused and in its original packaging.
Return procedure for P6KE91C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE91C Tags
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