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Taiwan Semiconductor Corporation P6KE22CAH
- Part No.:
- P6KE22CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE22CAH.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,567
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Product details
Overview
P6KE22CAH from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for robust overvoltage protection in automotive and industrial power rails. It features a nominal breakdown voltage of 22 V, clamping voltage of 31.9 V at 19 A peak surge current, and AEC-Q101 qualification for automotive-grade reliability. Its DO-204AC (DO-15) package supports high-surge applications such as ECU power input protection and CAN bus line transients.
For engineers reviewing the P6KE22CAH datasheet, P6KE22CAH pinout, P6KE22CAH application, or P6KE22CAH equivalent, key selection criteria include its bidirectional clamping behavior, 175°C maximum junction temperature, low dynamic impedance, fast 5.0 ns response time, and compliance with IEC 61249-2-21 halogen-free requirements.
Technical Context
The P6KE22CAH operates as a silicon avalanche diode configured in a bidirectional (symmetrical) arrangement, enabling identical clamping performance in both polarities. Its breakdown voltage range is 19.8–24.2 V at 1 mA test current, with a maximum clamping voltage of 31.9 V under 10/1000 µs surge conditions.
It delivers 600 W non-repetitive peak pulse power per UL-defined waveform, with thermal derating above 25°C ambient and junction temperature limits spanning −55°C to +175°C. The device exhibits <1 µA reverse leakage at 17.8 V stand-off voltage and a temperature coefficient of VBR of 0.092 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.8 V / 24.2 V at 1 mA - defines reliable avalanche initiation window for predictable clamping onset |
| VWM | 17.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPP | 31.9 V at 19 A - peak clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 600 W - surge power handling capability per standardized waveform, critical for ISO 7637-2 pulse immunity |
| TJ max | +175 °C - enables operation in under-hood automotive environments without thermal shutdown |
| Response time | 5.0 ns (bidirectional) - ensures suppression before sensitive ICs experience damaging overvoltage |
| AEC-Q101 qualified | Yes - validated for automotive electronics per stress-test requirements including temperature cycling and HTRB |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional variants; P6KE22CAH is bidirectional and marked without polarity band per specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (reversible) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity - no fixed polarity required in circuit layout |
| Lead 1 / Lead 2 | Current-carrying terminals | Both leads are electrically symmetric; solderable per J-STD-002 with pure tin plating and 0.400 g mass |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for polarity-aware placement in differential or AC-coupled lines |
| AEC-Q101 qualification | Validated for automotive use including HTSL, TCT, and HTRB - supports Tier-1 ECU and ADAS module designs |
| Low dynamic impedance | Enables tight clamping window (VC − VBR ≈ 12.1 V) - reduces energy dissipation in protected ICs during transients |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets RoHS and automotive OEM material declaration requirements |
| UL recognition | File #E-326243 - confirms flammability rating (UL 94V-0) and safety compliance for end-equipment certification |
Applications
| Automotive Power Rail Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and jump-start surges per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Limits rail voltage to ≤31.9 V during 600 W surges, preventing latch-up or gate oxide damage in downstream semiconductors. |
Use Scenario: Safeguarding CAN FD transceivers from ESD and coupled transients on vehicle communication lines. IC Role / Device Role / Timing Role: Bidirectional shunt element across CAN_H/CAN_L differential pair. Use Value: Clamps common-mode surges within 5.0 ns while maintaining signal integrity due to low capacitance and symmetrical response. |
| Industrial Sensor Interface Protection | LED Driver Input Stage Protection |
Use Scenario: Shielding 4–20 mA or RS-485 sensor nodes from induced lightning surges in factory automation systems. IC Role / Device Role / Timing Role: First-line defense at connector entry point, before signal conditioning amplifiers. Use Value: Absorbs up to 19 A peak current without degradation, preserving accuracy of precision analog front-ends. |
Use Scenario: Securing constant-current LED drivers against mains switching transients in streetlight and signage applications. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk input capacitor to clamp inrush and ringback spikes. Use Value: Withstands repeated 600 W pulses while maintaining VWM = 17.8 V - avoids false triggering during normal 22 V nominal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Same 22 V nominal, 600 W rating, but SMB package (surface-mount); lower IPP (23.3 A vs. 19 A) and higher VC (35.5 V) | Preferred for space-constrained PCBs; less suitable for high-temperature through-hole mounting | Select SMBJ22CA when board area is limited and reflow assembly is used; verify thermal relief for >125°C ambient |
| 1.5KE22CA | Same DO-15 package and bidirectional function, but 1500 W rating; higher VBR (20.9–23.1 V) and VC (36.5 V) | Used where higher surge margin is needed (e.g., alternator line protection), but increases clamping stress | Choose 1.5KE22CA only if system-level testing confirms need for >600 W headroom; otherwise P6KE22CAH offers tighter clamping |
Compared with SMBJ22CA and 1.5KE22CA, P6KE22CAH provides optimal balance of automotive qualification, compact DO-15 form factor, and lowest clamping voltage (31.9 V) among 22 V bidirectional TVS diodes - making it ideal for protecting voltage-sensitive microcontrollers without overdesigning surge margin.
Availability
P6KE22CAH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and LED driver input stage protection requiring stable component supply and AEC-Q101 compliance.
Supply support for P6KE22CAH 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, with global distribution and AEC-Q101 validation capabilities.
The P6KE series targets cost-effective, high-reliability transient suppression in automotive and industrial systems - engineered for robustness under repetitive surge stress and extended temperature operation.
FAQ
What does the "CA" suffix indicate in P6KE22CAH?
The "CA" suffix in P6KE22CAH denotes bidirectional configuration - meaning the device provides symmetrical clamping in both polarities, unlike unidirectional "A" variants. This allows placement across differential lines or AC-coupled circuits without polarity concerns, and is essential for protecting balanced interfaces like CAN or RS-485. The "H" suffix confirms AEC-Q101 qualification, verified per TSC's P2203 specification revision.
Is P6KE22CAH suitable for protecting a 24 V automotive system?
Yes, P6KE22CAH is appropriate for 24 V nominal systems, as its 17.8 V stand-off voltage (VWM) provides sufficient margin above typical 24 V rail variations (e.g., 20–28 V during cranking or charging). Its 31.9 V clamping voltage remains well below the 36 V absolute maximum rating of most 24 V-rated microcontrollers and transceivers, ensuring effective protection during ISO 7637-2 Pulse 1 and Pulse 2b events.
How does P6KE22CAH differ from P6KE22A?
P6KE22CAH is bidirectional and AEC-Q101 qualified, whereas P6KE22A is unidirectional and not AEC-Q101 rated. The "CA" version has identical breakdown (20.9–23.1 V) and clamping (30.6 V) specs as P6KE22A but supports reverse-polarity transients - critical for CAN, LIN, or USB data lines. The "H" suffix adds automotive stress-test validation, including temperature cycling and high-temperature reverse bias life testing.
What is the maximum surge current P6KE22CAH can handle?
P6KE22CAH is rated for a maximum peak surge current (IPP) of 19 A under the standard 10/1000 µs double-exponential waveform. This value is derived directly from its 600 W peak pulse power rating and 31.9 V clamping voltage (IPP = PPK/VC). Derating applies above 25°C ambient per Fig.2 in the TSC P2203 datasheet, reducing usable surge capacity by ~0.6% per °C rise.
Does P6KE22CAH require a heatsink in typical applications?
No, P6KE22CAH does not require a heatsink for single-event transient suppression, as its 600 W rating applies to non-repetitive pulses. However, for repetitive surge conditions (e.g., >1 pulse/minute), thermal management becomes critical: its steady-state power dissipation is only 5 W at 75°C ambient with 9.5 mm lead length. Layout should use ≥5 × 5 mm copper pads per lead to maintain junction temperature ≤175°C during sustained stress.
P6KE22CAH 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 20A
- 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)
P6KE22CAH FAQ
1.How can I place an order for P6KE22CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE22CAH 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 P6KE22CAH reliable?
The price and inventory of P6KE22CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE22CAH is usually 5 days.
3.What payment methods are accepted for P6KE22CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE22CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE22CAH?
P6KE22CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE22CAH 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 P6KE22CAH?
For technical support, including P6KE22CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE22CAH requirements.
6.How does Aetrix verify that P6KE22CAH is sourced from the original manufacturer or authorized distributors?
All P6KE22CAH 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 P6KE22CAH meets industry standards.
7.What is the process for return or replacement of P6KE22CAH?
All P6KE22CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE22CAH, 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 P6KE22CAH part is unused and in its original packaging.
Return procedure for P6KE22CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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