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Taiwan Semiconductor Corporation P4KE91CH
- Part No.:
- P4KE91CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE91CH.pdf
- Description:
- 400W, 91V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,801
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Product details
Overview
P4KE91CH from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, designed for high-energy surge protection in power rails and signal lines. It features a 91 V nominal breakdown voltage (VBR min 81.9 V, max 100 V at 1 mA), 73.7 V working stand-off voltage (VWM), clamps to ≤131 V at 3.2 A peak pulse current, and delivers 400 W peak pulse power per 10/1000 µs waveform - used in automotive power supply input stages and industrial I/O protection.
For engineers reviewing the P4KE91CH datasheet, P4KE91CH pinout, P4KE91CH application, or P4KE91CH equivalent, key selection criteria include its AEC-Q101 qualification, low leakage (<1 µA at 73.7 V), fast clamping response (<1.0 ps from 0 V to VBR), and compatibility with 75 °C lead temperature derating per JESD201 Class 2 whisker-tested tin-plated leads.
Technical Context
The P4KE91CH operates as a silicon avalanche diode optimized for unidirectional clamping. Its junction structure enables precise VBR tolerance (±5% for "A" variants, but P4KE91CH is standard grade), low dynamic impedance during transient events, and stable thermal performance up to TJ = 175 °C.
It complies with ANSI/IEEE C62.35 for peak pulse ratings and is rated for non-repetitive 8.3 ms half-sine surge currents up to 40 A. The device exhibits a positive VBR temperature coefficient of +0.106 %/°C, ensuring predictable voltage drift across operating temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 73.7 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR @ IT=1 mA | 81.9–100 V - breakdown voltage range at 1 mA test current; determines minimum trigger point for transient suppression |
| VC @ IPPM | ≤131 V at 3.2 A - clamping voltage under 10/1000 µs surge; limits downstream voltage stress on protected ICs |
| PPK | 400 W - peak pulse power handling capability; supports robust immunity against IEC 61000-4-5 Level 4 surges |
| ID @ VWM | <1 µA - reverse leakage at working voltage; ensures minimal standby power loss and signal integrity |
| TJ max | +175 °C - maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments |
| Package | DO-204AL (DO-41) - axial-leaded through-hole package with UL 94V-0 molding compound and J-STD-002 solderable leads |
Pinout & Package
DO-204AL (DO-41) package with axial leads: cathode indicated by band marking; anode and cathode terminals are non-polarized in layout but functionally asymmetric for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Low-side reference terminal | Connected to ground or low-impedance return path; completes clamping loop during positive transients |
| Cathode (banded end) | High-side surge sink | Connected to protected line (e.g., 12 V rail); conducts avalanche current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per stress test plan |
| 400 W surge rating (10/1000 µs) | Withstands repeated lightning-induced surges per IEC 61000-4-5 without degradation in clamping performance |
| Clamping ratio VC/VBR ≈ 1.61 | Ensures tight overvoltage control - critical for protecting 100 V-rated MOSFETs or CAN transceivers on 24 V systems |
| Leakage <1 µA at 73.7 V | Minimizes quiescent current draw in always-on battery-powered modules such as telematics control units |
| UL Recognized #E-326243 | Meets safety requirements for end-equipment certification in North America, reducing compliance validation effort |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECU power entry subjected to load dump (ISO 16750-2) and jump-start spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients before DC/DC converter input stage. Use Value: Limits voltage to ≤131 V during 3.2 A surge, preventing damage to 36 V-rated input capacitors and enabling use of lower-cost 16 V gate drivers. |
Use Scenario: 4–20 mA current loop interface exposed to ESD and inductive kickback from solenoid actuation. IC Role / Device Role / Timing Role: TVS mounted across sensor output terminals to shunt fast transients before analog front-end amplifier inputs. Use Value: Sub-1.0 ps response time ensures clamping initiates before 10 ns ESD pulses reach sensitive op-amp inputs, preserving signal fidelity. |
| Lighting System Surge Suppression | Programmable Logic Controller (PLC) Digital I/O Protection |
Use Scenario: LED driver input in streetlight fixture experiencing induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Primary-level TVS on AC/DC rectified bus to absorb energy before bulk capacitor and controller IC. Use Value: 400 W rating handles multi-kV induced surges without failure, extending mean time between failures in outdoor deployments. |
Use Scenario: 24 V digital input module receiving signals from field switches subject to relay contact bounce and inductive switching noise. IC Role / Device Role / Timing Role: TVS placed at connector entry point to divert fast transients before optocoupler input LED. Use Value: Low 73.7 V VWM allows reliable detection of valid 24 V logic high while suppressing >1 kV transients per IEC 61000-4-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | Surface-mount SMB package; 90 V standoff, 139 V clamping at 3.2 A; same 400 W rating but higher VC | Requires PCB re-layout; better suited for space-constrained designs where automated assembly is preferred | Select SMBJ90A only if SMT process capability exists and board real estate is limited - not drop-in compatible with P4KE91CH's through-hole footprint |
| 1.5KE91A | Higher 1500 W rating; same DO-204AL package; tighter VBR tolerance (±5%); clamps at 137 V @ 11.1 A | Over-spec for most 400 W use cases; introduces unnecessary cost and thermal mass in low-energy surge environments | Choose 1.5KE91A only when legacy system design mandates 1.5 kW surge immunity - otherwise P4KE91CH offers optimal cost-performance balance |
Compared with SMBJ90A and 1.5KE91A, the P4KE91CH provides AEC-Q101 qualification and optimal 400 W clamping performance in a cost-effective through-hole package - making it ideal for automotive body electronics and industrial control panels where manual or wave-solder assembly remains standard.
Availability
P4KE91CH is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line protection, lighting system surge suppression, and PLC digital I/O protection requiring stable component supply across long-lifecycle programs.
Supply support for P4KE91CH 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 thyristors - headquartered in Hsinchu, Taiwan.
The P4KE series belongs to TSC's AEC-Q101-qualified transient suppression portfolio, engineered specifically for automotive and industrial applications demanding high-reliability overvoltage protection with proven surge endurance and thermal stability.
FAQ
What is the clamping voltage of P4KE91CH under a 10/1000 µs surge?
The P4KE91CH clamps to a maximum of 131 V when subjected to its rated peak pulse current of 3.2 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees consistent overvoltage limiting for downstream components such as 100 V MOSFETs or CAN transceivers in 24 V systems. The P4KE91CH maintains this clamping performance across its full operating temperature range.
Is P4KE91CH suitable for bidirectional surge protection?
No, the P4KE91CH is a unidirectional TVS diode - its cathode band marking indicates polarity-sensitive operation and it is rated only for suppression of positive-going transients relative to ground. For bidirectional protection, Taiwan Semiconductor offers the P4KE91C variant (not P4KE91CH). Using P4KE91CH in a bidirectional configuration risks failure during negative transients due to lack of reverse breakdown specification.
Does P4KE91CH meet automotive qualification standards?
Yes, the "H" suffix in P4KE91CH explicitly denotes AEC-Q101 qualification. This includes passing stress tests for high-temperature reverse bias (HTRB), temperature cycling, mechanical shock, and whisker resistance per JESD201 Class 2 - confirming suitability for under-hood and chassis-mounted automotive modules. The P4KE91CH is listed in TSC's official AEC-Q101 qualified product catalog.
What is the maximum steady-state power dissipation for P4KE91CH?
The P4KE91CH has a steady-state power dissipation (PD) rating of 1 W at TL = 75 °C with 9.5 mm lead lengths mounted on 5 × 5 mm copper pads. This value derates linearly above 25 °C ambient per the published derating curve (Fig.2), reaching zero at 175 °C junction temperature. Continuous DC power dissipation must remain below this limit to avoid thermal runaway - the P4KE91CH is intended for transient, not steady-state, suppression.
How does the temperature coefficient affect P4KE91CH's breakdown voltage?
The P4KE91CH has a specified VBR temperature coefficient of +0.106 %/°C, meaning its breakdown voltage increases by approximately 0.087 V per °C rise in junction temperature. At 125 °C, VBR shifts from nominal 91 V to ~99.5 V - a critical consideration for high-ambient designs like engine control units. This positive drift ensures safer margin expansion at elevated temperatures, unlike Zener-based suppressors with negative coefficients.
P4KE91CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- 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):
- 3.2A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KE91CH FAQ
1.How can I place an order for P4KE91CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE91CH 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 P4KE91CH reliable?
The price and inventory of P4KE91CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE91CH is usually 5 days.
3.What payment methods are accepted for P4KE91CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE91CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE91CH?
P4KE91CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE91CH 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 P4KE91CH?
For technical support, including P4KE91CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE91CH requirements.
6.How does Aetrix verify that P4KE91CH is sourced from the original manufacturer or authorized distributors?
All P4KE91CH 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 P4KE91CH meets industry standards.
7.What is the process for return or replacement of P4KE91CH?
All P4KE91CH units undergo pre-shipment inspection (PSI). If there is an issue with P4KE91CH, 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 P4KE91CH part is unused and in its original packaging.
Return procedure for P4KE91CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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