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Taiwan Semiconductor Corporation P6KE91CH
- Part No.:
- P6KE91CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE91CH.pdf
- Description:
- 600W, 91V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,511
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Product details
Overview
P6KE91CH 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 AEC-Q101 qualified and housed in a DO-204AC (DO-15) package for automotive-grade ESD and lightning surge protection.
For engineers reviewing the P6KE91CH datasheet, P6KE91CH pinout, P6KE91CH application, or P6KE91CH equivalent, this device is selected for high-reliability DC bus protection where precise clamping voltage, low leakage (<1 µA at 73.7 V), and AEC-Q101 qualification are mandatory - especially in automotive body control modules, industrial PLC I/O protection, and 24/48 V telecom power interfaces.
Technical Context
The P6KE91CH operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its minimum breakdown voltage of 81.9 V. Its clamping action limits transient energy to ≤131 V at 4.8 A (10/1000 µs waveform), enabling robust protection of downstream MOSFETs, controllers, and sensors without crowbar behavior.
Thermal design is supported by a 175 °C maximum junction temperature and derating curves per Fig.2; its DO-204AC package provides 5 W steady-state dissipation at 75 °C with 9.5 mm lead length. The device exhibits a +0.106 %/°C VBR temperature coefficient and <1 µA reverse leakage above 73.7 V, ensuring stable threshold behavior across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 81.9 V / 100 V - defines reliable conduction onset range under 1 mA test current; ensures consistent turn-on across production lot and temperature |
| VWM | 73.7 V - maximum continuous reverse operating voltage; sets safe DC rail margin below breakdown (e.g., 24 V or 48 V systems with headroom) |
| VC @ IPP | 131 V at 4.8 A - peak clamped voltage during 10/1000 µs surge; determines maximum stress on protected ICs or FETs |
| PPK | 600 W - non-repetitive surge power rating; validates capability to absorb lightning-induced or inductive-switching transients |
| IR @ VWM | <1 µA - ultra-low reverse leakage at stand-off voltage; prevents parasitic loading in high-impedance sensing or battery-backed circuits |
| TJ(max) | 175 °C - maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures |
| Package | DO-204AC (DO-15) - industry-standard axial-leaded package with UL 94V-0 molding compound and tin-plated leads per J-STD-002 |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, cylindrical epoxy body with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Reference/ground return path | Connected to system ground or low-side reference; completes avalanche conduction path during overvoltage events |
| Cathode (banded end) | Protected line input | Connected to the line being protected (e.g., 24 V supply rail); reverse-biased during normal operation, avalanches during transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, lighting modules, and ADAS sensor interfaces |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 Level 3 (1 kV/2 kV) without degradation |
| Clamping voltage ≤131 V at 4.8 A | Provides ≥15 V margin below typical 150 V absolute maximum ratings of automotive microcontrollers and gate drivers |
| Response time <1.0 ps (0 V to VBR) | Engages before most semiconductor junctions experience avalanche failure, preventing latent damage in fast-rising ESD events |
| UL Recognized (E326243) & RoHS/Halogen-free | Meets global safety and environmental compliance requirements for OEM production and export-controlled programs |
Applications
| Automotive Body Control Module (BCM) | Industrial 24 V PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power pins from load-dump and jump-start transients in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V/24 V supply rail and ground, acting as first-line clamping element. Use Value: Clamps 120 V/200 A load-dump spikes to ≤131 V, preserving MCU VDD integrity and eliminating need for secondary filtering stages. |
Use Scenario: Shields optocoupler input circuitry on PLC digital input cards from field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: Standoff-connected TVS on 24 V field-side rail, absorbing repetitive 5 kV EFT (IEC 61000-4-4) pulses. Use Value: Maintains <1 µA leakage at 24 V, avoiding false triggering while surviving >10,000 EFT pulses per IEC 61000-4-4 compliance testing. |
| Telecom 48 V DC Power Feeds | LED Streetlight Driver Input Stage |
|
Use Scenario: Guards PoE-powered equipment front-end rectifiers and DC-DC controllers against lightning-induced surges on 48 V distribution lines. IC Role / Device Role / Timing Role: Primary surge clamp on 48 V input, upstream of bulk capacitor and active converter stage. Use Value: Limits transient voltage to 131 V - well below 200 V rated input capacitors - enabling single-stage protection without series impedance. |
Use Scenario: Safeguards constant-current LED driver ICs from inductive kickback generated by magnetic HID ballast replacements. IC Role / Device Role / Timing Role: Unidirectional TVS across AC-DC output bus, suppressing 100–500 V switching transients from relay contact bounce or transformer flyback. Use Value: Sub-ns response ensures clamping occurs before driver IC's internal ESD structures fail, extending field lifetime beyond 50,000 hours. |
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 SMAJ90A | Same DO-214AC (SMA) package; 90 V nominal, 135 V clamping at 4.7 A; ±5% VBR tolerance vs. P6KE91CH's ±10% | Higher precision VBR but lower surge rating (400 W); not AEC-Q101 qualified | Select for cost-sensitive industrial designs where AEC-Q101 is unnecessary and tighter voltage tolerance is required |
| ON Semiconductor 1.5KE91A | Same DO-201AD package; 91 V nominal, 139 V clamping at 4.3 A; 1.5 kW peak rating but larger footprint | Higher power handling (1500 W) but 3× larger package; no AEC-Q101 option available | Select when surge threat level exceeds 600 W (e.g., outdoor telecom cabinets) and board space permits larger DO-201AD |
Compared with SMAJ90A and 1.5KE91A, the P6KE91CH uniquely combines AEC-Q101 qualification, DO-15 form factor, and 600 W capability - making it the only drop-in solution for space-constrained automotive modules requiring certified reliability and standardized through-hole assembly.
Availability
P6KE91CH is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC I/O protection, and 48 V telecom power systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for P6KE91CH 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, specializing in power management, protection devices, and automotive-qualified components.
The P6KE series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for harsh-environment overvoltage protection in automotive ECUs, industrial controls, and infrastructure power systems where reliability and regulatory compliance are non-negotiable.
FAQ
What is the clamping voltage of the P6KE91CH under a 10/1000 µs surge?
The P6KE91CH clamps to a maximum of 131 V when subjected to a 4.8 A peak current with a 10/1000 µs waveform, as specified in the Electrical Specifications table. This value represents the upper limit of voltage seen by downstream circuitry during standardized surge testing and is critical for verifying compatibility with protected ICs' absolute maximum ratings. The P6KE91CH maintains this clamping performance across its full operating temperature range.
Is the P6KE91CH suitable for bidirectional transient protection?
No, the P6KE91CH is a unidirectional TVS diode, indicated by the "H" suffix (AEC-Q101 qualified) and absence of "CA" or "C" designation. It conducts only in reverse bias and must be installed with cathode toward the protected line. For bidirectional protection, select P6KE91C or P6KE91CA - which feature symmetrical breakdown in both directions and different marking conventions. The P6KE91CH is not interchangeable with those variants.
Does the P6KE91CH meet automotive qualification standards?
Yes, the P6KE91CH is explicitly AEC-Q101 qualified, as confirmed in the FEATURES section and ORDERING INFORMATION (note 2: "H means AEC-Q101 qualified"). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - validating its suitability for under-hood and chassis-mounted automotive applications. The P6KE91CH carries full AEC-Q101 documentation traceable to Taiwan Semiconductor's certification records.
What is the maximum steady-state power dissipation for the P6KE91CH?
The P6KE91CH has a steady-state power dissipation (PD) of 5 W at TA = 75 °C with 9.5 mm lead lengths, per Absolute Maximum Ratings. This rating assumes PCB mounting on 5 × 5 mm copper pads per terminal and applies only to continuous DC or low-frequency conditions - not transient events. Derating is required above 75 °C using the Pulse Derating Curve (Fig.2), and actual thermal performance depends on board layout and airflow.
How does the P6KE91CH compare to the P6KE91A variant?
The P6KE91CH and P6KE91A share identical electrical parameters (VBR: 86.5–95.5 V, VC: 125 V at 5.0 A), but differ in qualification and marking: P6KE91CH is AEC-Q101 qualified and marked with "H", while P6KE91A is commercial-grade only. Both use DO-204AC packaging and have the same thermal limits. The P6KE91CH is the sole choice for automotive production; P6KE91A serves non-automotive cost-sensitive applications.
P6KE91CH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE91CH FAQ
1.How can I place an order for P6KE91CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE91CH 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 P6KE91CH reliable?
The price and inventory of P6KE91CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE91CH is usually 5 days.
3.What payment methods are accepted for P6KE91CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE91CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE91CH?
P6KE91CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE91CH 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 P6KE91CH?
For technical support, including P6KE91CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE91CH requirements.
6.How does Aetrix verify that P6KE91CH is sourced from the original manufacturer or authorized distributors?
All P6KE91CH 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 P6KE91CH meets industry standards.
7.What is the process for return or replacement of P6KE91CH?
All P6KE91CH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE91CH, 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 P6KE91CH part is unused and in its original packaging.
Return procedure for P6KE91CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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