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Taiwan Semiconductor Corporation P4KE9.1CH
- Part No.:
- P4KE9.1CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE9.1CH.pdf
- Description:
- 400W, 9.1V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,819
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Product details
Overview
P4KE9.1CH from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, designed for high-energy surge protection in DC power rails and signal lines. It features a 9.1 V nominal breakdown voltage, 7.37 V working stand-off voltage, 13.8 V maximum clamping voltage at 30 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in automotive lighting control modules to safeguard microcontrollers against load-dump transients.
For engineers reviewing the P4KE9.1CH datasheet, P4KE9.1CH pinout, P4KE9.1CH application, or P4KE9.1CH equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, leakage current below 50 µA at 7.37 V, unidirectional polarity marking, AEC-Q101 qualification status, and DO-41 mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
The P4KE9.1CH operates as a silicon avalanche diode with fast response time (<1.0 ps from 0 V to VBR) and low dynamic impedance, enabling effective suppression of ESD and electrical fast transients (EFT). Its unidirectional configuration provides reverse-biased clamping only, requiring correct cathode orientation toward the protected circuit's positive rail.
It meets UL 94V-0 flammability rating and JESD201 Class 2 whisker resistance, with pure tin-plated leads compliant to J-STD-002 solderability. The device is rated for junction temperatures from –55 °C to +175 °C and supports steady-state power dissipation of 1 W at 75 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 9.1 V - defines primary clamping threshold for system-level overvoltage protection |
| Working Stand-off Voltage (VWM) | 7.37 V - maximum continuous reverse voltage before significant leakage; must exceed circuit operating voltage |
| Breakdown Voltage (VBR @ 1 mA) | 8.19–10.00 V - verified avalanche onset range under standardized test current |
| Maximum Clamping Voltage (VC @ 30 A) | 13.8 V - peak voltage seen by protected IC during 10/1000 µs surge; determines safe margin above VDD |
| Peak Pulse Power (PPK) | 400 W - energy-handling capability for single non-repetitive transients per IEC 61000-4-5 |
| Reverse Leakage (ID @ VWM) | <50 µA - ensures minimal quiescent power loss and signal integrity in always-on circuits |
| Junction Temperature Range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Dimensions conform to JEDEC DO-41 standard; weight ≈ 0.300 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Reference node / ground side | Connected to system ground or low-side return path; carries surge current to earth reference |
| Cathode (banded end) | Protected line input | Connected to positive rail or signal line; clamps transients by avalanching toward anode when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| 400 W peak pulse rating (10/1000 µs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surges without degradation |
| Clamping voltage ≤13.8 V at 30 A | Provides ≥1.2 V margin below typical 15 V automotive microcontroller absolute maximum ratings |
| Leakage <50 µA at 7.37 V | Enables use in battery-backed or low-power sensor nodes without measurable standby current penalty |
| UL Recognized (E326243) | Meets safety requirements for end-equipment certification in North America and globally harmonized markets |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting LED driver ICs and CAN transceivers in headlamp control units exposed to load-dump events up to 35 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground, clamping transients within 1 ps to limit voltage overshoot on power pins. Use Value: Prevents latch-up or gate oxide damage in 5 V/12 V logic interfaces during alternator disconnection events. |
Use Scenario: Safeguarding 24 V digital input terminals in programmable logic controllers subjected to inductive kickback from solenoid coils. IC Role / Device Role / Timing Role: Mounted across input optocoupler supply rails to shunt >100 V spikes before they reach isolation barrier components. Use Value: Extends mean time between failures (MTBF) by eliminating transient-induced false triggering or opto-isolator degradation. |
| Consumer Power Adapter Output | Telecom Line Interface |
|
Use Scenario: Secondary-side overvoltage protection on 9 V/12 V AC-DC adapter outputs feeding USB-C PD controllers or audio codecs. IC Role / Device Role / Timing Role: Placed downstream of secondary rectifier to clamp flyback transformer ringing and external surge coupling. Use Value: Maintains output regulation integrity and avoids brownout resets during conducted EFT bursts per IEC 61000-4-4. |
Use Scenario: DC bias rail protection in PoE-powered Ethernet PHY interfaces where DC feed voltage may experience lightning-induced surges. IC Role / Device Role / Timing Role: Connected between PSE-derived 48 V and ground to clamp common-mode transients before reaching magnetics and PHY ICs. Use Value: Preserves IEEE 802.3af/at compliance by limiting voltage excursion to <150% of nominal rail during surge tests. |
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 P4KE9.1A | Higher VBR min/max (8.65–9.55 V), tighter tolerance; same DO-41 package and 400 W rating | Suitable where tighter breakdown consistency is required for precise clamping threshold control | Select P4KE9.1A when statistical VBR distribution must be minimized across production lots |
| ON Semiconductor 1.5KE9.1A | Same VWM (7.37 V) and VC (13.8 V), but 1.5 kW peak power rating and larger DO-201 package | Used in higher-energy systems where 400 W is insufficient; requires PCB layout change | Choose 1.5KE9.1A only if surge threat level exceeds IEC 61000-4-5 Level 4 or MIL-STD-1275B |
Compared with Littelfuse P4KE9.1A, the P4KE9.1CH offers identical clamping performance but with AEC-Q101 qualification confirmed in documentation; versus ON Semi 1.5KE9.1A, it trades peak power headroom for compact DO-41 footprint and automotive qualification - making it optimal for space-constrained, automotive-compliant designs.
Availability
P4KE9.1CH is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, consumer power adapter output regulation, and telecom line interface applications requiring stable component supply and full traceability.
Supply support for P4KE9.1CH 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 validation capabilities.
The P4KE series targets cost-sensitive, high-reliability surge protection in automotive and industrial systems, emphasizing robustness, standardized packaging, and compliance with UL, RoHS, and halogen-free requirements.
FAQ
What is the polarity configuration of the P4KE9.1CH?
The P4KE9.1CH is a unidirectional TVS diode with cathode indicated by a band on the DO-41 package. It conducts only in reverse bias during overvoltage events, requiring correct orientation with cathode toward the protected positive rail. This configuration prevents forward conduction during normal operation while enabling fast avalanche clamping when VAK exceeds 8.19 V.
Does the P4KE9.1CH meet AEC-Q101 qualification?
Yes, the "H" suffix in P4KE9.1CH explicitly denotes AEC-Q101 qualification per Taiwan Semiconductor's ordering code definition. This includes stress testing for temperature cycling, high-temperature reverse bias, and ESD per the AEC-Q101 standard, confirming suitability for automotive powertrain and body electronics applications.
What is the maximum clamping voltage of the P4KE9.1CH at rated surge current?
The P4KE9.1CH has a maximum clamping voltage (VC) of 13.8 V at 30 A peak pulse current under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on the protected circuit during worst-case surge conditions.
How does the P4KE9.1CH compare to the P4KE9.1A variant?
The P4KE9.1CH and P4KE9.1A share identical electrical specifications including VWM (7.37 V), VC (13.8 V), and PPK (400 W), but differ in qualification: P4KE9.1CH is AEC-Q101 qualified ("H" suffix), whereas P4KE9.1A is commercial-grade. Both use DO-41 packaging and have compatible pinouts.
Is the P4KE9.1CH RoHS and halogen-free compliant?
Yes, the P4KE9.1CH is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the product documentation. The molding compound meets UL 94V-0 flammability rating, and terminals are pure tin plated to satisfy J-STD-002 solderability requirements.
P4KE9.1CH 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):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 30A
- 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)
P4KE9.1CH FAQ
1.How can I place an order for P4KE9.1CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE9.1CH 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 P4KE9.1CH reliable?
The price and inventory of P4KE9.1CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE9.1CH is usually 5 days.
3.What payment methods are accepted for P4KE9.1CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE9.1CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE9.1CH?
P4KE9.1CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE9.1CH 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 P4KE9.1CH?
For technical support, including P4KE9.1CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE9.1CH requirements.
6.How does Aetrix verify that P4KE9.1CH is sourced from the original manufacturer or authorized distributors?
All P4KE9.1CH 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 P4KE9.1CH meets industry standards.
7.What is the process for return or replacement of P4KE9.1CH?
All P4KE9.1CH units undergo pre-shipment inspection (PSI). If there is an issue with P4KE9.1CH, 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 P4KE9.1CH part is unused and in its original packaging.
Return procedure for P4KE9.1CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE9.1CH Tags
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