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Taiwan Semiconductor Corporation P6KE24CAH
- Part No.:
- P6KE24CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE24CAH.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,053
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Product details
Overview
P6KE24CAH from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It delivers 600W peak pulse power at 10/1000μs, clamps transients to ≤33.2V at 19A peak current, and features a 19.4V stand-off voltage with <1μA leakage above 20.5V - deployed in CAN bus interfaces, DC-DC converter inputs, and ECU power supply lines.
For engineers reviewing the P6KE24CAH datasheet, P6KE24CAH pinout, P6KE24CAH application, or P6KE24CAH equivalent, key selection criteria include its AEC-Q101 qualification, DO-15 package compatibility, bidirectional clamping symmetry, and thermal derating behavior up to +175°C junction temperature.
Technical Context
The P6KE24CAH implements a silicon avalanche diode structure optimized for fast transient response (<5.0ns turn-on for bidirectional events) and low dynamic impedance. Its breakdown voltage range of 22.8V–25.2V at 1mA test current ensures precise overvoltage thresholding across temperature.
Designed for unidirectional and bidirectional configurations, the device uses a single-die DO-204AC (DO-15) package with pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance - enabling robust reflow and wave soldering in automotive-grade assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 19.4 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe working margin below clamping threshold. |
| VBR (min/max) | 22.8 V / 25.2 V - Breakdown occurs within this band at 1 mA; guarantees consistent clamping initiation across production lots. |
| VC @ IPP | 33.2 V @ 19 A - Clamped voltage during 10/1000μs surge; determines maximum stress imposed on downstream ICs. |
| PPK | 600 W - Peak pulse power handling per single 10/1000μs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| IR @ VWM | <1 μA - Reverse leakage at rated stand-off voltage; ensures negligible standby power loss in battery-powered systems. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments without thermal shutdown. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with 5.2–7.0 mm body length; compatible with legacy through-hole assembly lines. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case meeting UL 94V-0 flammability rating; cathode band marking indicates polarity for unidirectional variants - absent on P6KE24CAH due to bidirectional symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (reversible) | Bidirectional avalanche junction | No fixed polarity; terminals function identically in either orientation - simplifies PCB layout and eliminates orientation errors during placement. |
| Lead 1 | Current path terminal | Connects directly to protected line (e.g., CAN_H or +12V rail); no internal series resistance or control logic. |
| Lead 2 | Current path terminal | Completes surge current loop to ground or return path; symmetric conduction supports differential-mode transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power domains - meets stress testing for temperature cycling, HTRB, and mechanical shock. |
| 600W surge capability | Withstands repeated 10/1000μs surges up to 600W without degradation - exceeds ISO 7637-2 Pulse 5a requirements for 12V systems. |
| <5.0 ns response time | Clamps transients before sensitive logic thresholds are violated - critical for protecting CAN transceivers and microcontroller I/O pins. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and end-of-life recycling mandates. |
| Low dynamic impedance | Minimizes voltage overshoot during fast-rising ESD events (e.g., IEC 61000-4-2 Contact Discharge) by sustaining low clamping resistance under high di/dt. |
Applications
| Automotive Power Rail Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs against load dump and alternator ripple-induced spikes. IC Role / Device Role / Timing Role: Primary clamping element placed between power input and bulk capacitor - absorbs energy before it reaches LDOs or MCU power pins. Use Value: Limits voltage excursions to ≤33.2V during 100V/500ms load dump events, preventing brownout resets and gate oxide damage in downstream regulators. | Use Scenario: Shielding high-speed CAN FD physical layer transceivers from EFT and ESD coupling on differential bus lines. IC Role / Device Role / Timing Role: Bidirectional shunt device mounted across CAN_H–CAN_L pair - clamps common-mode surges while preserving signal integrity. Use Value: Maintains <5.0ns response to sub-10ns EFT bursts, ensuring bit error rate remains below 10⁻¹² during ISO 7637-3 testing. |
| Industrial Sensor Interface Protection | DC-DC Converter Input Stage |
Use Scenario: Safeguarding 4–20mA analog sensor outputs connected to PLC analog input modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Low-leakage (≤1μA) TVS placed at module connector - blocks surges without loading the precision current loop. Use Value: Enables stable 16-bit ADC measurements by limiting transient-induced offset shifts to <0.05% FS during 4kV ESD contact discharge. | Use Scenario: Front-end surge protection for buck converter inputs in motor drives subjected to inductive switching noise. IC Role / Device Role / Timing Role: First-line defense upstream of input filter capacitors - diverts >95% of 600W surge energy away from MOSFET gate drivers. Use Value: Prevents premature failure of SiC FETs by capping input voltage to 33.2V during 100A inrush events caused by relay bounce. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Same VWM (19.4V), lower PPK (600W → 600W), but SMC package (smaller footprint, higher thermal resistance). | Preferred for space-constrained PCBs where DO-15 lead spacing is incompatible with layout density requirements. | Select SMBJ24CA only if board real estate is constrained and thermal management via copper pour can compensate for reduced heatsinking capability. |
| 1.5KE24CA | Same VBR range (22.8–25.2V), identical DO-15 package, but lower PPK (600W → 1500W) and higher VC (38.9V vs. 33.2V). | Used in legacy industrial designs requiring higher surge margin but tolerating elevated clamping voltage. | Choose 1.5KE24CA when system-level testing confirms 38.9V clamping is acceptable for protected ICs' absolute maximum ratings. |
Compared with SMBJ24CA and 1.5KE24CA, the P6KE24CAH offers optimal balance of AEC-Q101 compliance, DO-15 manufacturability, and low 33.2V clamping - making it the preferred choice for new automotive electronics designs requiring validated reliability and predictable surge performance.
Availability
P6KE24CAH is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, CAN bus nodes, and DC-DC converter input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6KE24CAH 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 headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The P6KE series was developed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments - emphasizing robustness, repeatable clamping, and compatibility with automated through-hole assembly processes.
FAQ
What does the "CA" suffix indicate in P6KE24CAH?
The "CA" suffix in P6KE24CAH denotes bidirectional configuration - meaning the device functions identically in both polarities and has no anode/cathode distinction. This enables symmetrical clamping across differential lines like CAN_H/CAN_L or AC-coupled signal paths without requiring orientation-aware placement. The P6KE24CAH maintains identical VBR, VC, and IPP specifications in either direction, unlike unidirectional "A" variants.
Is P6KE24CAH suitable for protecting RS-485 communication lines?
Yes, P6KE24CAH is suitable for RS-485 bus protection when applied differentially across A/B lines or common-mode to ground. Its 33.2V clamping voltage aligns with standard RS-485 transceiver absolute maximum ratings (±15V common-mode, ±25V fault tolerance), and its <5.0ns response prevents data corruption during EFT bursts. However, ensure external series current-limiting resistors are used to avoid exceeding the P6KE24CAH's 19A peak surge rating during sustained faults.
How does the AEC-Q101 qualification impact P6KE24CAH's use in non-automotive applications?
The AEC-Q101 qualification for P6KE24CAH validates its reliability under extended temperature cycling (-55°C to +175°C), high-acceleration mechanical shock, and humidity-bias stress - benefits that extend beyond automotive use. In industrial motor drives or outdoor telecom equipment, this translates to longer field life, reduced infant mortality, and improved confidence in surge survival after years of thermal cycling. The P6KE24CAH's qualification provides design margin even when deployed in less extreme environments.
Can P6KE24CAH be used in parallel to increase surge current handling?
No, P6KE24CAH should not be used in parallel to increase surge current capacity. Due to manufacturing variations in VBR (22.8–25.2V), paralleled units will share current unevenly - causing one device to absorb most of the surge energy and fail prematurely. For higher IPP requirements, select a single higher-rated device such as P6KE33CAH (IPP = 13.8A) or use a TVS array with matched characteristics. The P6KE24CAH is designed for standalone operation per its published 19A rating.
What is the maximum allowable PCB trace length between P6KE24CAH and the protected IC?
To preserve the P6KE24CAH's <5.0ns response advantage, PCB trace inductance must be minimized - limiting total trace length from device to protected node to ≤10 mm (≈3.9 nH). Longer traces introduce inductive voltage overshoot (V = L·di/dt) that defeats clamping effectiveness. For CAN bus protection, mount the P6KE24CAH directly at the connector with ground plane stitching vias within 2 mm of each lead. Always verify layout performance using TLP testing per IEC 61000-4-5.
P6KE24CAH 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 19A
- 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)
P6KE24CAH FAQ
1.How can I place an order for P6KE24CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE24CAH 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 P6KE24CAH reliable?
The price and inventory of P6KE24CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE24CAH is usually 5 days.
3.What payment methods are accepted for P6KE24CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE24CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE24CAH?
P6KE24CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE24CAH 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 P6KE24CAH?
For technical support, including P6KE24CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE24CAH requirements.
6.How does Aetrix verify that P6KE24CAH is sourced from the original manufacturer or authorized distributors?
All P6KE24CAH 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 P6KE24CAH meets industry standards.
7.What is the process for return or replacement of P6KE24CAH?
All P6KE24CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE24CAH, 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 P6KE24CAH part is unused and in its original packaging.
Return procedure for P6KE24CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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