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Taiwan Semiconductor Corporation P6KE91AH
- Part No.:
- P6KE91AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE91AH.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,067
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Product details
Overview
P6KE91AH 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 91V nominal breakdown voltage (VBR = 86.5–95.5V at IT = 1mA), 77.8V maximum stand-off voltage (VWM), 125V clamping voltage (VC) at 5.0A peak surge current, and DO-204AC (DO-15) axial package - deployed in automotive body control modules to protect LIN bus transceivers from load dump and EFT events.
For engineers reviewing the P6KE91AH datasheet, P6KE91AH pinout, P6KE91AH application, or P6KE91AH equivalent, key selection criteria include its AEC-Q101 qualification, 175°C junction temperature rating, low dynamic impedance, sub-nanosecond response time, and compliance with IEC 61000-4-4/5 for electrical fast transients and surge immunity.
Technical Context
The P6KE91AH operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified VBR range (86.5–95.5V). Its clamping action limits transient energy to ≤125V at 5.0A (10/1000μs waveform), with typical leakage <1μA at 77.8V and thermal derating starting at TA > 25°C per Fig.2.
It is constructed as a single-die silicon junction device in a DO-204AC molded package with pure tin-plated leads, rated for 100A non-repetitive forward surge (8.3ms half-sine), and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5V / 95.5V at 1mA test current - defines reliable conduction onset window under transient stress |
| VWM | 77.8V maximum - ensures stable blocking during normal 24V automotive system operation with margin |
| VC @ IPP | 125V at 5.0A (10/1000μs) - limits downstream IC voltage exposure to safe levels during surge |
| PPK | 600W peak pulse power - sustains standardized lightning/surge waveforms without failure |
| IR @ VWM | <1μA - minimizes standby power loss and avoids false triggering in high-impedance circuits |
| TJ(max) | +175°C - supports under-hood deployment in AEC-Q101-compliant automotive environments |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package compatible with through-hole assembly and manual repair |
Pinout & Package
DO-204AC (DO-15) axial package with cathode band marking; leads are pure tin-plated and solderable per J-STD-002. Polarity is unidirectional: anode (unmarked end), cathode (banded end).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked lead) | DC return path / ground reference | Connected to system ground or low-side rail; completes conduction path during reverse transient |
| Cathode (banded lead) | Protected line input | Connected to the node requiring clamping (e.g., LIN bus line); conducts avalanche current to ground when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| 600W surge capability (10/1000μs) | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without degradation |
| Clamping voltage ≤125V at 5A | Ensures protected ICs (e.g., LIN transceivers) remain below absolute maximum ratings during transients |
| Response time <1.0ps (0→VBR) | Engages before most microsecond-scale ESD/EFT pulses fully develop, preventing latch-up or gate oxide damage |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with automotive ELV directive and enables use in green manufacturing processes |
Applications
| Automotive LIN Bus Protection | Industrial 24V PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN transceiver inputs against load dump, battery reversal, and EFT in door module ECUs. IC Role / Device Role: Primary clamping element placed between LIN line and ground, upstream of transceiver input. Use Value: Limits voltage excursion to ≤125V during 10/1000μs surges, preserving transceiver integrity per ISO 17987-4. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role: Standoff protector across 24V input terminals, shunting transient energy to chassis ground. Use Value: Absorbs up to 600W surge without failure, enabling robust operation in factory-floor electromagnetic environments. |
| LED Driver Power Rail Clamp | Smart Sensor Signal Line Guard |
|
Use Scenario: Suppressing switching spikes on constant-current LED driver outputs driving long cable runs. IC Role / Device Role: Unidirectional TVS connected cathode-to-line, anode-to-ground on output rail. Use Value: Clamps overshoot to 125V, preventing overvoltage stress on LED strings and driver MOSFETs. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD events in HVAC control panels. IC Role / Device Role: Low-leakage (≤1μA) TVS placed at connector interface, guarding signal and ground lines. Use Value: Maintains signal fidelity during normal operation while reacting in <1ps to 8kV contact ESD per IEC 61000-4-2. |
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 package; VBR = 90–100V, VC = 129V @ 4.8A, 400W rating | Lower peak power rating; suitable for less severe surge environments | Select when board space constraints favor SMD or when 400W surge capacity suffices |
| ON Semiconductor 1.5KE91A | Same DO-201AD package; VBR = 86.5–95.5V, VC = 125V @ 4.8A, 1500W rating | Higher surge rating but larger footprint and higher leakage (~5μA) | Choose for higher-energy surge immunity where DO-201AD mounting is acceptable |
Compared with SMAJ90A and 1.5KE91A, the P6KE91AH offers AEC-Q101 qualification and tighter leakage (<1μA) in the standard DO-15 form factor - making it optimal for cost-sensitive, high-volume automotive and industrial through-hole designs requiring validated reliability.
Availability
P6KE91AH is available at Aetrix Electronics and suitable for automotive LIN bus protection, industrial 24V PLC I/O protection, and LED driver power rail clamping requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for P6KE91AH 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 for automotive, industrial, and consumer markets.
The P6KE series was developed specifically for AEC-Q101-compliant transient suppression in automotive power distribution and communication networks - emphasizing robustness, low leakage, and precise clamping performance under thermal stress.
FAQ
What is the polarity configuration of the P6KE91AH?
The P6KE91AH is a unidirectional TVS diode with clearly marked cathode (banded end) and anode (unmarked end). It conducts only when the cathode is at a higher potential than the anode - making it suitable for DC rail clamping where polarity is fixed, such as 24V automotive systems. This differs from bidirectional variants like P6KE91CA, which lack polarity marking and clamp in both directions.
Does the P6KE91AH meet AEC-Q101 requirements?
Yes, the "H" suffix in P6KE91AH explicitly denotes AEC-Q101 qualification per the manufacturer's ordering code table. It has undergone stress testing including temperature cycling, high-temperature operating life, and mechanical shock - confirming suitability for automotive under-hood applications. The qualification excludes earlier "A"-suffix variants below 10V, but P6KE91AH is fully covered.
What is the maximum clamping voltage of the P6KE91AH under surge conditions?
The P6KE91AH has a maximum clamping voltage (VC) of 125V at 5.0A peak pulse current using the 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage seen by downstream circuitry during standardized surge events - critical for ensuring protected ICs remain within their absolute maximum ratings.
Can the P6KE91AH be used in bidirectional signal protection?
No - the P6KE91AH is strictly unidirectional and must not be used on AC or bidirectional signal lines without external polarity management. For bidirectional protection (e.g., RS-485, CAN), select the CA-suffixed variant P6KE91CA, which features symmetrical breakdown in both directions and no cathode marking. Using P6KE91AH in such roles risks permanent failure during negative excursions.
What is the thermal derating behavior of the P6KE91AH above 25°C ambient?
The P6KE91AH follows the pulse derating curve in Fig.2 of its datasheet: peak pulse power decreases linearly from 600W at 25°C to zero at 175°C junction temperature. At 75°C ambient, the device retains ~70% of rated power (≈420W) when mounted on 5×5 mm copper pads per JEDEC standards - requiring appropriate PCB copper area and airflow planning in high-temp environments.
P6KE91AH 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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)
P6KE91AH FAQ
1.How can I place an order for P6KE91AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE91AH 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 P6KE91AH reliable?
The price and inventory of P6KE91AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE91AH is usually 5 days.
3.What payment methods are accepted for P6KE91AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE91AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE91AH?
P6KE91AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE91AH 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 P6KE91AH?
For technical support, including P6KE91AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE91AH requirements.
6.How does Aetrix verify that P6KE91AH is sourced from the original manufacturer or authorized distributors?
All P6KE91AH 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 P6KE91AH meets industry standards.
7.What is the process for return or replacement of P6KE91AH?
All P6KE91AH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE91AH, 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 P6KE91AH part is unused and in its original packaging.
Return procedure for P6KE91AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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