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Taiwan Semiconductor Corporation P6KE91CA
- Part No.:
- P6KE91CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE91CA.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:4,427
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Product details
Overview
P6KE91CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 91 V nominal breakdown voltage, 131 V maximum clamping voltage at 4.8 A peak pulse current, 600 W peak pulse power rating (10/1000 µs), and DO-204AC (DO-15) axial package - deployed in automotive lighting control modules, industrial PLC I/O protection, and PoE-powered device interfaces.
For engineers reviewing the P6KE91CA datasheet, P6KE91CA pinout, P6KE91CA application, or P6KE91CA equivalent, key selection criteria include bidirectional clamping behavior, low leakage (<1 µA at 73.7 V), fast response time (<5 ns), AEC-Q101 qualification eligibility (per ordering code suffix), and compatibility with JEDEC-standard DO-15 footprint layouts.
Technical Context
The P6KE91CA operates as a silicon avalanche diode with symmetrical bidirectional breakdown characteristics, enabling identical clamping performance in both polarities. Its junction structure supports 175 °C maximum junction temperature and exhibits a 0.106 %/°C temperature coefficient of VBR, ensuring stable threshold behavior across automotive-grade thermal ranges.
It delivers 600 W surge capability under standardized 10/1000 µs waveform conditions, with clamping voltage tightly bounded at ≤131 V up to 4.8 A peak current. The device meets UL 94V-0 flammability requirements and complies with RoHS and IEC 61249-2-21 halogen-free standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 81.9 V / 100 V - guaranteed avalanche initiation range at 1 mA test current; defines minimum overvoltage threshold before conduction |
| VWM | 73.7 V - maximum continuous reverse working voltage; circuit must operate below this to avoid leakage-induced power loss |
| VC @ IPP | 131 V @ 4.8 A - clamped voltage during 10/1000 µs surge; determines protected IC's maximum stress exposure |
| IPP (max) | 4.8 A - peak surge current survivable without degradation; sets minimum series impedance required for compliance |
| PPK | 600 W - non-repetitive surge power handling; validates suitability for IEC 61000-4-5 Level 4 (4 kV) testing |
| IR @ VWM | <1 µA - reverse leakage at rated stand-off voltage; ensures negligible standby current in battery-powered systems |
| TJ(max) | 175 °C - maximum junction temperature; enables operation in under-hood automotive environments without derating |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with UL 94V-0 rating. Cathode band marking omitted due to bidirectional configuration; polarity is non-directional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as cathode or anode depending on transient polarity; no fixed polarity assignment required |
| Lead 1 | Terminal connection | Tin-plated copper lead compliant with J-STD-002 solderability; supports wave/reflow processes without whisker risk |
| Lead 2 | Terminal connection | Identical to Lead 1; symmetric layout enables orientation-agnostic PCB placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W 10/1000 µs surge rating | Validates robustness against IEC 61000-4-5 surges up to 4 kV in industrial and automotive applications |
| <5 ns response time | Clamps transients before sensitive downstream logic or analog circuitry sustains damage |
| AEC-Q101 qualified option (P6KE91CAH) | Supports automotive-grade reliability requirements including temperature cycling, HTRB, and mechanical shock |
| Halogen-free & RoHS compliant | Meets EU environmental directives and IPC/JEDEC J-STD-020 reflow profile compatibility |
Applications
| Automotive LED Headlamp Drivers | Industrial Ethernet Port Protection |
|---|---|
|
Use Scenario: Protecting DC/DC converter outputs and LED string drivers from load-dump and jump-start transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across output rail to clamp ±120 V transients within 5 ns, limiting stress on MOSFET gate drivers and current-sense amplifiers. Use Value: Prevents catastrophic failure of LED driver ICs during ISO 7637-2 Pulse 5a events while maintaining <1 µA leakage at 73.7 V operating voltage. |
Use Scenario: Safeguarding PHY interface pins on industrial switches exposed to EFT bursts and lightning-induced surges on unshielded Cat5/6 cabling. IC Role / Device Role / Timing Role: Placed on each differential pair (e.g., TX+/TX−) to clamp common-mode surges up to ±1 kV per IEC 61000-4-4. Use Value: Limits clamped voltage to ≤131 V during 4.8 A surge, preserving PHY integrity without requiring additional series impedance or filtering. |
| Smart Meter Power Supply Inputs | Medical Infusion Pump Motor Control |
|
Use Scenario: Guarding AC-DC adapter inputs and backup battery charging circuits against mains-borne surges and capacitor discharge spikes. IC Role / Device Role / Timing Role: Mounted at front-end rectifier output to absorb 600 W energy pulses while holding VC ≤131 V to protect downstream LDOs and microcontrollers. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV line-to-earth) without increasing board area or BOM count. |
Use Scenario: Shielding brushed DC motor driver H-bridges from inductive kickback during rapid stop/start cycles in battery-operated infusion pumps. IC Role / Device Role / Timing Role: Connected across motor terminals to shunt flyback energy into controlled avalanche conduction, preventing >131 V spikes at gate drivers. Use Value: Eliminates need for freewheeling diodes in space-constrained designs while sustaining 175 °C junction temperature during repeated surge events. |
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 (Bourns) | 400 W rating, 125 V clamping at 3.2 A, SMB package (surface-mount) | Lower surge capacity; requires PCB real estate optimization for SMT assembly | Select when board space is constrained and 400 W surge margin suffices |
| 1.5KE91CA (ON Semiconductor) | Identical 600 W rating and 131 V clamping, but DO-201AD package (larger body, higher thermal mass) | Higher thermal inertia improves repetitive surge endurance; less suitable for ultra-thin enclosures | Select when enhanced thermal cycling reliability or legacy DO-201AD footprint compatibility is required |
Compared with SMBJ90CA and 1.5KE91CA, the P6KE91CA offers optimal balance of 600 W surge capability, DO-15 footprint compactness, and AEC-Q101 qualification path - making it preferred for new automotive and industrial designs where cost, size, and qualification alignment are jointly prioritized.
Availability
P6KE91CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial Ethernet infrastructure, smart metering platforms, and medical motor control circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6KE91CA 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, and rectifiers, with global distribution and AEC-Q101 qualification capabilities.
The P6KE series was developed for high-reliability transient suppression in automotive, industrial, and telecom power systems - emphasizing robust surge handling, tight parameter distribution, and extended temperature operation.
FAQ
What is the clamping voltage of the P6KE91CA under maximum surge conditions?
The P6KE91CA has a maximum clamping voltage (VC) of 131 V when subjected to its rated peak pulse current of 4.8 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components experience no more than 131 V during worst-case surge events - a critical parameter for ensuring safe operation of 100 V-rated ICs in the same circuit. The P6KE91CA maintains this clamping performance bidirectionally.
Is the P6KE91CA suitable for automotive applications requiring AEC-Q101 qualification?
Yes - the P6KE91CA is available in an AEC-Q101-qualified variant designated P6KE91CAH (per ordering code suffix "H"). This version undergoes full stress testing per AEC-Q101 Rev D, including HTGB, HTRB, and temperature cycling, and is approved for use in automotive powertrain, body electronics, and lighting modules. Standard P6KE91CA units are not AEC-Q101 certified; qualification applies only to the "H" suffix variant.
How does the P6KE91CA differ from unidirectional TVS diodes like P6KE91A?
The P6KE91CA is bidirectional, meaning it clamps transients of either polarity identically - ideal for AC signals, floating buses, or circuits where voltage reversal may occur. In contrast, P6KE91A is unidirectional and includes a cathode band; it conducts only during negative transients relative to its marked cathode. The P6KE91CA's VBR range (81.9–100 V) and VC (131 V) apply in both directions, whereas P6KE91A's parameters are specified for reverse-biased operation only.
What is the maximum steady-state power dissipation for the P6KE91CA at 75°C ambient?
The P6KE91CA has a steady-state power dissipation (PD) rating of 5 W when mounted on 5 × 5 mm copper pads per lead at TA = 75°C. This value reflects thermal limits under continuous DC bias - though the device is intended for transient suppression, not steady-state power handling. Exceeding this limit risks thermal runaway; designers must ensure VWM (73.7 V) is not sustained near maximum ratings for extended periods. The P6KE91CA's 175 °C TJ(max) supports short-duration surges well beyond this limit.
Can the P6KE91CA be used in parallel to increase surge current handling?
No - the P6KE91CA should not be paralleled for increased surge current capacity. Due to manufacturing tolerances in VBR (±10% for P6KE91CA), uneven current sharing will occur during transients, causing one device to dominate conduction and potentially fail prematurely. For higher IPP requirements, select a higher-rated part (e.g., 1.5KE91CA or SMAJ91CA) or implement external current-sharing resistors - though the latter degrades clamping performance. The P6KE91CA is optimized for standalone 4.8 A surge handling.
P6KE91CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- 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):
- 4.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE91CA FAQ
1.How can I place an order for P6KE91CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE91CA 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 P6KE91CA reliable?
The price and inventory of P6KE91CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE91CA is usually 5 days.
3.What payment methods are accepted for P6KE91CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE91CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE91CA?
P6KE91CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE91CA 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 P6KE91CA?
For technical support, including P6KE91CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE91CA requirements.
6.How does Aetrix verify that P6KE91CA is sourced from the original manufacturer or authorized distributors?
All P6KE91CA 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 P6KE91CA meets industry standards.
7.What is the process for return or replacement of P6KE91CA?
All P6KE91CA units undergo pre-shipment inspection (PSI). If there is an issue with P6KE91CA, 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 P6KE91CA part is unused and in its original packaging.
Return procedure for P6KE91CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE91CA Tags
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