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Taiwan Semiconductor Corporation P6KE440AH
- Part No.:
- P6KE440AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE440AH.pdf
- Description:
- TVS DIODE 376VWM 602VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,372
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Product details
Overview
P6KE440AH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 440V nominal breakdown voltage (VBR = 396–484 V), 356 V maximum standoff voltage (VWM), and clamps to ≤631 V at 1.0 A peak pulse current, with low dynamic impedance and sub-1 ps response time. It is AEC-Q101 qualified and used in automotive power supply input stages.
For engineers reviewing the P6KE440H datasheet, P6KE440AH pinout, P6KE440AH application, or P6KE440AH equivalent, key selection criteria include its DO-15 package compatibility, 175°C junction rating, UL 94V-0 molding compound, and compliance with IEC 61249-2-21 halogen-free requirements.
Technical Context
The P6KE440AH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 396–484 V breakdown range at 1 mA test current. Its clamping action limits transient-induced overvoltage to ≤631 V under 10/1000 µs waveform conditions, delivering 600 W peak pulse power capability.
It exhibits <1 µA reverse leakage at 356 V (VWM), a temperature coefficient of VBR at 0.110 %/°C, and is rated for -55°C to +175°C junction operation. The device uses a single-die DO-204AC (DO-15) package with pure tin-plated leads compliant with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 396 V / 484 V - defines reliable avalanche conduction onset range at 1 mA; ensures consistent clamping threshold across production lot |
| VWM | 356 V - maximum continuous reverse operating voltage; sets safe DC bias margin before leakage rises significantly |
| VC @ IPP | ≤631 V at 1.0 A - clamping voltage under standardized 10/1000 µs surge; determines protected circuit's worst-case overvoltage exposure |
| PPK | 600 W - non-repetitive peak pulse power handling; enables robust protection against lightning-induced or inductive-switching transients |
| IR @ VWM | ≤1 µA - ultra-low reverse leakage; minimizes standby power loss and avoids false triggering in high-impedance sensing nodes |
| TJ(max) | +175°C - maximum junction temperature; supports operation in under-hood automotive environments and high-power industrial enclosures |
| Package | DO-204AC (DO-15) - industry-standard axial-leaded package; compatible with legacy through-hole assembly and automated tape-and-reel feeding (3500/reel) |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking; lead length ≥9.5 mm for 5 W derated power dissipation; meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry / Surge return path | Connected to ground or low-impedance return node; carries full surge current during clamping |
| Cathode (banded end) | Reverse-biased terminal / Clamping reference | Connected to protected line; avalanche conduction begins here when VAK > VBR; polarity must match PCB silkscreen |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| 600 W 10/1000 µs surge rating | Withstands high-energy transients common in 24 V/48 V vehicle power systems without degradation |
| Sub-1 ps response time (unidirectional) | Activates faster than most microcontroller I/O or analog front-end damage thresholds, enabling pre-failure protection |
| UL 94V-0 flame-retardant compound | Prevents fire propagation in enclosed modules subjected to sustained overvoltage or short-circuit fault conditions |
| Halogen-free per IEC 61249-2-21 | Meets RoHS and automotive OEM environmental mandates; eliminates corrosive gas emission during thermal runaway |
Applications
| Automotive Power Input Protection | Industrial DC Bus Surge Suppression |
|---|---|
Use Scenario: 48 V battery rail in ADAS domain controllers exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and PMICs. Use Value: Limits voltage excursion to ≤631 V during ISO 7637-2 Pulse 5a (load dump), preventing gate oxide rupture in downstream MOSFETs. |
Use Scenario: 400 V DC link in motor drive inverters subject to IGBT switching-induced voltage spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on DC+ and DC− rails to absorb commutation energy. Use Value: Absorbs up to 600 W transient energy within 1000 µs, reducing need for oversized snubbers and improving system efficiency. |
| Telecom Power Feeding Protection | Renewable Energy Charge Controller Input |
Use Scenario: -48 V telecom rectifier output feeding remote radio units via long cable runs susceptible to induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on feed line to protect PoE-like interface ICs and monitoring ADCs. Use Value: Withstands repeated 10/1000 µs surges up to 1 A while maintaining <1 µA leakage at -356 V, preserving measurement accuracy. |
Use Scenario: PV array input stage of solar charge controller exposed to lightning-induced surges on rooftop wiring. IC Role / Device Role / Timing Role: First-line transient suppressor before MPPT controller and battery isolation FETs. Use Value: Clamps 6 kV/3 kA surge events to safe levels (<631 V), protecting SiC MOSFET gates and isolated gate drivers. |
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 SMAJ440A | Same DO-214AC package; 440 V VBR (418–462 V); 400 W PPK; higher VC (648 V @ 1.0 A) | Lower surge rating reduces margin in high-energy automotive load dump scenarios | Select when footprint compatibility with SMC/SMA packages is required and 400 W suffices |
| ON Semiconductor 1.5KE440A | DO-201AD package; same 440 V VBR (396–484 V); 1500 W PPK; larger body and higher IFSM (200 A) | Higher surge capacity suits heavy-duty industrial motor drives but requires larger PCB area | Select when higher single-pulse energy handling (>600 W) is mandatory and board space allows DO-201AD |
Compared with Littelfuse SMAJ440A and ON Semi 1.5KE440A, P6KE440AH offers optimal balance of AEC-Q101 qualification, DO-15 legacy compatibility, and 600 W surge rating-making it preferred for cost-sensitive, space-constrained automotive and industrial designs where 1.5 kW devices are over-specified.
Availability
P6KE440AH is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, and renewable energy systems requiring stable component supply with AEC-Q101 assurance and long-term lifecycle support.
Supply support for P6KE440AH 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 capability.
The P6KE series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure-designed for robustness under harsh thermal and electrical stress without compromising leakage or response speed.
FAQ
What is the maximum clamping voltage of P6KE440AH under standard surge conditions?
The P6KE440AH clamps to a maximum of 631 V when subjected to a 10/1000 µs waveform at 1.0 A peak pulse current. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage seen by downstream circuitry during transient events. The actual clamping voltage of P6KE440AH may be lower depending on surge amplitude and duration, but design margins should be based on the 631 V specification.
Is P6KE440AH suitable for bidirectional transient protection?
No, P6KE440AH is a unidirectional TVS diode intended only for DC circuits with defined polarity. Its cathode band must be oriented toward the positive rail. For bidirectional protection, the P6KE440CA variant (with CA suffix) is specified-P6KE440AH lacks symmetrical breakdown characteristics and will not conduct in forward direction beyond its ~1.2 V forward drop.
Does P6KE440AH meet automotive qualification standards?
Yes, P6KE440AH is explicitly AEC-Q101 qualified per the manufacturer's ordering code suffix "H", confirmed in the P6KE Series datasheet Version P2203. This includes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock-validating suitability for under-hood and chassis-mounted automotive applications.
What is the standoff voltage rating for P6KE440AH, and how does it relate to system operating voltage?
The maximum standoff voltage (VWM) of P6KE440AH is 356 V, meaning it remains in high-impedance state below this DC or RMS voltage. For reliable operation, system nominal voltage must stay ≤80% of VWM-so P6KE440AH is appropriate for 270–300 V DC systems like EV auxiliary supplies or industrial 400 V DC links with sufficient derating margin. Exceeding 356 V risks premature conduction and thermal failure.
How does the DO-204AC (DO-15) package of P6KE440AH affect thermal performance?
The DO-204AC (DO-15) package of P6KE440AH delivers 5 W steady-state power dissipation at 75°C ambient when mounted on 5 × 5 mm copper pads per lead. Its axial-leaded construction enables manual rework and compatibility with wave soldering, but thermal resistance is higher than surface-mount alternatives-designers must verify board layout meets JEDEC JESD51-2 guidelines and avoid excessive trace length to maintain TJ ≤175°C under surge duty cycles.
P6KE440AH 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:
- 1
- Bidirectional Channels:
- -
- 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)
P6KE440AH FAQ
1.How can I place an order for P6KE440AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE440AH 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 P6KE440AH reliable?
The price and inventory of P6KE440AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE440AH is usually 5 days.
3.What payment methods are accepted for P6KE440AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE440AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE440AH?
P6KE440AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE440AH 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 P6KE440AH?
For technical support, including P6KE440AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE440AH requirements.
6.How does Aetrix verify that P6KE440AH is sourced from the original manufacturer or authorized distributors?
All P6KE440AH 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 P6KE440AH meets industry standards.
7.What is the process for return or replacement of P6KE440AH?
All P6KE440AH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE440AH, 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 P6KE440AH part is unused and in its original packaging.
Return procedure for P6KE440AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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