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Taiwan Semiconductor Corporation P6KE440CAH
- Part No.:
- P6KE440CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE440CAH.pdf
- Description:
- TVS DIODE 376VWM 602VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,741
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Product details
Overview
P6KE440CAH from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 440V nominal breakdown voltage (VBR = 396–484 V), 356V stand-off voltage (VWM), 631V maximum clamping voltage at 1.0A peak pulse current, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the P6KE440CAH datasheet, P6KE440CAH pinout, P6KE440CAH application, or P6KE440CAH equivalent, key selection criteria include clamping performance under 10/1000μs surges, bidirectional polarity tolerance, DO-204AC package compatibility with high-temperature PCB layouts, and compliance with IEC 61000-4-5 Level 4 immunity requirements.
Technical Context
The P6KE440CAH operates as a silicon avalanche diode with symmetrical bidirectional conduction-enabling protection of AC lines or differential signal pairs without polarity constraints. Its low dynamic impedance ensures rapid voltage clamping during transients exceeding 1kV, while its 175°C maximum junction temperature supports operation in engine control units and industrial motor drives.
Designed for unidirectional and bidirectional configurations (denoted by "C" and "CA" suffixes), 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. It meets UL 94V-0 flammability and RoHS/halogen-free standards per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 356 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 396–484 V at 1 mA - Avalanche onset range confirming robust overvoltage triggering across production lot variation. |
| VC @ IPPM (Clamping Voltage) | 631 V at 1.0 A - Peak voltage seen by protected circuit during 10/1000μs surge; critical for downstream IC voltage rating margin. |
| PPK (Peak Pulse Power) | 600 W - Energy-handling capacity per single 10/1000μs waveform; enables protection against IEC 61000-4-5 combination wave surges. |
| TJ MAX | 175 °C - Maximum junction temperature allowing reliable operation in under-hood automotive environments and enclosed industrial enclosures. |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package with 0.400 g mass; compatible with legacy wave-solder and selective solder processes. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC-Q101 Rev D. |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band marking for unidirectional variants; P6KE440CAH is bidirectional and marked with part-specific code (no polarity band). Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional polarity - either lead may connect to line or return; enables AC line or differential pair protection without orientation constraints. |
| Lead 1 / Lead 2 | Current path terminals | Both leads serve identical conduction paths; mechanical symmetry simplifies PCB layout and eliminates orientation-dependent assembly errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC mains, RS-485 buses, and transformer-coupled interfaces without external polarity management circuitry. |
| 600W 10/1000μs surge rating | Meets IEC 61000-4-5 Level 4 (4 kV line-earth, 2 kV line-line) for industrial and automotive power input stages. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics where temperature cycling and long-term reliability are mission-critical. |
| Low dynamic impedance | Ensures sub-10 ns response to fast transients (e.g., ISO 7637-2 pulse 1/2a/5a), minimizing overshoot into protected ICs. |
| UL 94V-0 molding compound | Prevents flame propagation in high-power fault conditions, supporting safety certification in industrial control panels and EV charging systems. |
Applications
| Automotive Power Distribution | Industrial AC Input Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary surge shunt element placed at main power entry point before DC-DC converters and microcontrollers. Use Value: Clamps 120 V/200 V load dump spikes to ≤631 V, preserving downstream 75 V-rated MOSFETs and LDOs without derating. |
Use Scenario: Safeguarding AC-DC front-end rectifiers and PFC controllers against lightning-induced surges on 230 VAC mains. IC Role / Device Role / Timing Role: Secondary-level TVS deployed across bridge rectifier output or bulk capacitor terminals. Use Value: Absorbs 600 W of energy from 10/1000μs surges, preventing overvoltage failure of 450 V electrolytic capacitors and boost diodes. |
| RS-485 Data Line Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Shielding half-duplex RS-485 transceivers in factory automation networks from EFT and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional clamp between A/B differential pair and ground, placed adjacent to connector. Use Value: Symmetric clamping limits common-mode excursions to <±631 V, maintaining signal integrity during 4 kV EFT bursts per IEC 61000-4-4. |
Use Scenario: Suppressing Miller-induced voltage spikes on high-side gate drivers in 3-phase inverters driving PMSM motors. IC Role / Device Role / Timing Role: Snubber-connected TVS across gate-source terminals of 650 V SiC MOSFETs. Use Value: Limits dv/dt-induced gate overvoltage to safe levels (<20 V), preventing false turn-on and shoot-through in high-frequency PWM switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440CA | Same 440 V VBR range and bidirectional configuration, but SMB package (surface-mount); lower 600 W rating derated above 75°C. | Requires rework of through-hole footprint to SMD pad layout; better suited for space-constrained PCBs with automated assembly. | Select SMBJ440CA when board real estate is limited and thermal management via copper pour is feasible. |
| 1.5KE440CA | Higher 1500 W peak power rating, same DO-204AC package; larger die size increases capacitance (≈100 pF vs. ≈30 pF for P6KE440CAH). | Higher clamping voltage (690 V) reduces system margin; preferred for high-energy surges where layout allows larger thermal mass. | Choose 1.5KE440CA only when 600 W is insufficient and higher clamping voltage can be tolerated by protected circuitry. |
Compared with SMBJ440CA and 1.5KE440CA, P6KE440CAH offers optimal balance of AEC-Q101 qualification, through-hole manufacturability, and precise 631 V clamping-making it ideal for automotive and industrial designs requiring proven reliability without SMT retooling or excessive voltage margin sacrifice.
Availability
P6KE440CAH is available at Aetrix Electronics and suitable for automotive power distribution, industrial AC input protection, RS-485 data line hardening, and motor drive gate driver safeguarding requiring stable component supply across extended product lifecycles.
Supply support for P6KE440CAH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The P6KE series was developed specifically for high-reliability transient suppression in harsh environments-emphasizing AEC-Q101 compliance, wide temperature operation, and consistent clamping performance across voltage grades from 6.8 V to 440 V.
FAQ
What does the "CA" suffix indicate in P6KE440CAH?
The "CA" suffix in P6KE440CAH denotes bidirectional configuration-meaning the device provides symmetrical avalanche clamping in both forward and reverse directions. This distinguishes it from unidirectional "C" variants and makes P6KE440CAH suitable for AC line protection, differential data lines, and other polarity-agnostic surge scenarios without requiring orientation-aware placement.
Is P6KE440CAH suitable for IEC 61000-4-5 compliance testing?
Yes, P6KE440CAH is rated for 600 W peak pulse power at the standard 10/1000 μs waveform defined in IEC 61000-4-5. Its 631 V clamping voltage at 1.0 A IPPM provides measurable margin against the 4 kV line-earth test level, making P6KE440CAH a validated choice for Level 4 surge immunity in industrial and automotive equipment.
How does the AEC-Q101 qualification impact P6KE440CAH's use in automotive designs?
AEC-Q101 qualification confirms that P6KE440CAH has passed stress tests including temperature cycling, high-temperature reverse bias, and ESD-ensuring long-term reliability in under-hood environments up to 175°C junction temperature. This validation eliminates additional qualification effort for P6KE440CAH in automotive power modules, body control units, and ADAS sensor interfaces.
What is the maximum allowable mounting temperature for P6KE440CAH during reflow or wave soldering?
P6KE440CAH uses a DO-204AC (DO-15) package with pure tin-plated leads qualified per J-STD-002. For wave soldering, peak temperature must not exceed 260°C for ≤10 seconds; for hand soldering, tip temperature should remain below 350°C with contact time <3 seconds. These limits preserve solder joint integrity and prevent internal die damage in P6KE440CAH.
Can P6KE440CAH replace P6KE440A in an existing design?
No-P6KE440CAH and P6KE440A are functionally distinct: P6KE440CAH is bidirectional with "CA" suffix and AEC-Q101 qualification ("H"), whereas P6KE440A is unidirectional and lacks automotive qualification. Substituting them would compromise polarity-sensitive circuits and invalidate AEC-Q101 compliance claims for P6KE440CAH.
P6KE440CAH 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):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 1.04A
- 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)
P6KE440CAH FAQ
1.How can I place an order for P6KE440CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE440CAH 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 P6KE440CAH reliable?
The price and inventory of P6KE440CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE440CAH is usually 5 days.
3.What payment methods are accepted for P6KE440CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE440CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE440CAH?
P6KE440CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE440CAH 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 P6KE440CAH?
For technical support, including P6KE440CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE440CAH requirements.
6.How does Aetrix verify that P6KE440CAH is sourced from the original manufacturer or authorized distributors?
All P6KE440CAH 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 P6KE440CAH meets industry standards.
7.What is the process for return or replacement of P6KE440CAH?
All P6KE440CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE440CAH, 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 P6KE440CAH part is unused and in its original packaging.
Return procedure for P6KE440CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE440CAH Tags
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