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Taiwan Semiconductor Corporation P6KE91CAH
- Part No.:
- P6KE91CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE91CAH.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,623
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Product details
Overview
P6KE91CAH from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a nominal breakdown voltage of 91 V, clamps transients to ≤125 V at 5.0 A peak pulse current, and delivers <1 μA reverse leakage at 77.8 V standoff voltage - enabling robust ESD and lightning-induced surge suppression in 12 V/24 V systems.
For engineers reviewing the P6KE91CAH datasheet, P6KE91CAH pinout, P6KE91CAH application, or P6KE91CAH equivalent, key selection criteria include its AEC-Q101 qualification, DO-15 package compatibility with high-density PCB layouts, bidirectional clamping symmetry, and verified performance under 10/1000 µs surge waveforms per IEC 61000-4-5.
Technical Context
The P6KE91CAH operates as a silicon avalanche diode with symmetrical bidirectional breakdown behavior, enabling identical clamping in both polarities without external polarity management. Its junction temperature range spans −55 °C to +175 °C, supporting under-hood automotive deployment and industrial motor drive environments where thermal cycling exceeds 100 K.
It exhibits a maximum temperature coefficient of VBR of 0.106 %/°C and a typical junction capacitance below 100 pF at 0 V, ensuring minimal signal distortion in DC-biased protection paths while maintaining fast response (<5 ns) to fast-rising transients like EFT and ISO 7637-2 pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 600 W - sustains single high-energy surges up to IEC 61000-4-5 Level 4 (4 kV line-to-ground) |
| Breakdown Voltage VBR (min/max) | 86.5 V / 95.5 V at 1 mA - ensures reliable conduction onset before system-level damage thresholds |
| Standoff Voltage VWM | 77.8 V - allows continuous operation on 72 V nominal DC bus without leakage-induced power loss |
| Clamping Voltage VC @ IPP = 5.0 A | 125 V - limits downstream IC stress to safe levels during 10/1000 µs transients |
| Maximum Reverse Leakage ID | 1 µA @ 77.8 V - prevents standby current drain in battery-powered modules |
| Junction Temperature Range | −55 °C to +175 °C - qualified for engine compartment and industrial control cabinet mounting |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTOL, TCT, and HAST |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with UL 94V-0 flammability rating and pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Current entry point in forward bias; cathode band absent in bidirectional configuration | Terminal polarity is non-functional - symmetric conduction enables placement without orientation check |
| Cathode (unmarked end) | Current exit point in forward bias; no marking band per bidirectional design | Both terminals behave identically - eliminates risk of reverse installation in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics - supports PPAP documentation and zero-defect manufacturing programs |
| 600 W peak pulse power | Withstands 4 kV surge per IEC 61000-4-5 without degradation - reduces need for cascaded protection stages |
| Bidirectional clamping symmetry | Identical VBR, VC, and IPP in both directions - simplifies protection of AC-coupled or floating reference circuits |
| Low dynamic impedance | Ensures stable clamping voltage across varying surge amplitudes - improves predictability of protected node voltage excursions |
| Fast response time | <5 ns turn-on from 0 V to VBR - intercepts sub-microsecond EFT bursts before sensitive logic inputs latch erroneous states |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of 24 V supply lines feeding ECUs, lighting controllers, and CAN transceivers against load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point before input filter stage. Use Value: Clamps 120 V transients to ≤125 V within 5 ns, preventing latch-up in 3.3 V microcontrollers powered via integrated LDOs. |
Use Scenario: Surge suppression on 3-phase rectified DC bus inputs exposed to switching transients from IGBT gate drivers. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000 µs spikes generated by inductive kickback during PWM commutation. Use Value: Maintains <1 µA leakage at 77.8 V, avoiding unnecessary power dissipation in always-on control circuitry. |
| LED Streetlight Driver Outputs | RS-485 Transceiver Bus Lines |
Use Scenario: Output-side protection of constant-current LED drivers subjected to lightning-induced surges on long outdoor cable runs. IC Role / Device Role / Timing Role: Bidirectional clamp bridging output and ground to shunt common-mode transients without disrupting current regulation. Use Value: Symmetric 86.5–95.5 V breakdown ensures equal clamping regardless of surge polarity - critical for ungrounded LED strings. |
Use Scenario: Bus-line protection for industrial RS-485 nodes installed in electrically noisy factory environments with frequent EFT events. IC Role / Device Role / Timing Role: Low-capacitance (≤100 pF) TVS placed differential across A/B lines to suppress fast transients without distorting 10 Mbps data signals. Use Value: 125 V clamping at 5 A limits differential voltage excursion below RS-485 receiver absolute maximum rating (±12 V common-mode + 12 V differential). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | 600 W rating, 90 V nominal, SMB package (surface-mount), lower IPP (5.3 A vs. 5.0 A) | Requires rework for through-hole to SMT transition; better suited for automated assembly but lacks AEC-Q101 certification | Select when board space is constrained and automotive qualification is not required |
| 1.5KE91CA | Same DO-15 package and 91 V rating, but 1500 W peak power and higher VC (137 V) | Higher clamping voltage increases stress on downstream components; intended for less sensitive systems with larger safety margins | Select only if surge energy exceeds 600 W and system can tolerate 137 V transient ceiling |
Compared with SMBJ90CA and 1.5KE91CA, the P6KE91CAH uniquely balances AEC-Q101 compliance, through-hole manufacturability, and precise 125 V clamping - making it optimal for cost-sensitive automotive modules requiring zero-layout change from legacy DO-15 designs.
Availability
P6KE91CAH is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive inputs, LED driver outputs, and RS-485 bus line protection requiring stable component supply across multi-year production cycles.
Supply support for P6KE91CAH 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 TVS diodes, rectifiers, MOSFETs, and power management devices.
The P6KE series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, wide temperature operation, and consistent clamping performance across production lots.
FAQ
What does the "CA" suffix indicate in P6KE91CAH?
The "CA" suffix in P6KE91CAH denotes bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics across its two terminals. This eliminates polarity sensitivity during PCB placement and supports AC-coupled or floating reference applications where voltage reversals occur.
Is P6KE91CAH suitable for protecting CAN FD interfaces?
Yes, P6KE91CAH is suitable for CAN FD interface protection when placed on the power rail (VCC) supplying the transceiver, not on the differential signal lines. Its 125 V clamping voltage safely limits supply rail excursions during load dump, while its <1 µA leakage avoids loading low-current bias networks. For differential line protection, lower-voltage TVS arrays are recommended.
How does P6KE91CAH differ from P6KE91A?
P6KE91CAH differs from P6KE91A in three confirmed aspects: (1) "CA" indicates bidirectional operation versus unidirectional in "A", (2) "H" confirms AEC-Q101 qualification - absent in standard P6KE91A, and (3) packaging is optimized for automotive traceability with date/lot coding per TSC's automotive-grade marking standard. The P6KE91CAH is the only variant qualified for under-hood use.
What is the maximum ambient temperature for continuous operation of P6KE91CAH?
P6KE91CAH supports continuous operation up to +75 °C ambient temperature at full rated power (5 W), with derating required above that point per Figure 2 in the datasheet. Its junction temperature rating extends to +175 °C, enabling reliable function in engine bay locations where board temperatures reach +125 °C, provided thermal resistance from junction to ambient remains within design limits.
Does P6KE91CAH require a heatsink for 600 W surge handling?
No, P6KE91CAH does not require a heatsink for 600 W surge handling because the 10/1000 µs waveform represents a non-repetitive, sub-millisecond energy event - total energy is only ~0.6 J. The device's thermal mass and epoxy package dissipate this transient without exceeding its 175 °C junction limit. Heatsinking is unnecessary unless operating near steady-state power limits (>5 W) in high-ambient environments.
P6KE91CAH 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):
- 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)
P6KE91CAH FAQ
1.How can I place an order for P6KE91CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE91CAH 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 P6KE91CAH reliable?
The price and inventory of P6KE91CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE91CAH is usually 5 days.
3.What payment methods are accepted for P6KE91CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE91CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE91CAH?
P6KE91CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE91CAH 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 P6KE91CAH?
For technical support, including P6KE91CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE91CAH requirements.
6.How does Aetrix verify that P6KE91CAH is sourced from the original manufacturer or authorized distributors?
All P6KE91CAH 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 P6KE91CAH meets industry standards.
7.What is the process for return or replacement of P6KE91CAH?
All P6KE91CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE91CAH, 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 P6KE91CAH part is unused and in its original packaging.
Return procedure for P6KE91CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE91CAH Tags
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