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Taiwan Semiconductor Corporation P6KE440
- Part No.:
- P6KE440
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE440.pdf
- Description:
- 600W, 440V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,521
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Product details
Overview
P6KE440 from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for high-voltage surge protection in power rails and signal lines. It features a 440V nominal breakdown voltage (VBR min/max = 396–484 V), 356 V standoff voltage (VWM), 1.0 A peak pulse current (IPP), and clamps transients to ≤631 V at rated surge. It is used in industrial power supplies and telecom infrastructure to protect downstream ICs from lightning-induced surges.
For engineers reviewing the P6KE440 datasheet, P6KE440 pinout, P6KE440 application, or P6KE440 equivalent, key selection criteria include its DO-204AC (DO-15) axial package, unidirectional polarity, 175°C maximum junction temperature, and compliance with ANSI/IEEE C62.35 for 10/1000 µs surge waveforms.
Technical Context
The P6KE440 operates as a silicon avalanche diode, entering controlled reverse breakdown above its 356 V standoff voltage to shunt transient energy away from protected circuitry. Its low dynamic impedance and fast response (<1.0 ps from 0 V to VBR) ensure minimal voltage overshoot during ESD or lightning events.
It is rated for non-repetitive 600W peak pulse power at 10/1000 µs waveform, derated linearly above 25°C ambient per published curves. With <1 µA reverse leakage at VWM and a 0.110 %/°C VBR temperature coefficient, it maintains stable clamping across industrial temperature ranges (−55°C to +175°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 356 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC/AC rail margin. |
| VBR (min/max) | 396 V / 484 V - Measured at 1 mA IT; ensures predictable, repeatable breakdown onset across production lots. |
| VC @ IPP | 631 V - Clamping voltage at 1.0 A peak pulse current; determines maximum stress imposed on protected ICs. |
| PPK | 600 W - Peak pulse power handling at 10/1000 µs waveform; quantifies single-event surge robustness. |
| TJ max | +175°C - Maximum junction temperature; enables operation in high-ambient environments like enclosed power cabinets. |
| Package | DO-204AC (DO-15) - Axial-leaded, through-hole package with UL 94V-0 molding compound and tin-plated leads. |
| Configuration | Unidirectional - Cathode-banded device; blocks forward conduction and clamps only reverse transients. |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated and solderable per J-STD-002. Weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-banded end) | Reference node for reverse-biased operation | Connected to lower-potential side of protected line (e.g., GND or return path); completes clamping path during surge. |
| Cathode (banded end) | Transient clamping terminal | Connected to higher-potential line (e.g., +48 V rail); avalanche conduction initiates here when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600W surge rating at 10/1000 µs | Enables protection against IEC 61000-4-5 Level 4 (4 kV) surges on AC mains or telecom lines without derating. |
| Clamping voltage ≤631 V at 1.0 A IPP | Provides ≥30 V margin below typical 660 V MOSFET drain-source breakdown, safeguarding switching FETs. |
| Reverse leakage <1 µA at 356 V | Minimizes standby power loss and avoids false triggering in high-impedance sensing circuits. |
| Fast response time <1.0 ps | Ensures clamping activation before transient edges propagate into sensitive analog or digital IC inputs. |
| UL 94V-0 flammability rating | Meets safety requirements for enclosed industrial equipment where flame propagation must be prevented. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Card Surge Suppression |
|---|---|
|
Use Scenario: Installed across AC/DC input stage of 48 V telecom rectifiers exposed to lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between hot rail and chassis ground to clamp common-mode transients before they reach bridge rectifier and bulk capacitor. Use Value: Limits peak voltage to ≤631 V, preventing overvoltage failure of 800 V-rated input capacitors and reducing stress on primary-side MOSFETs. |
Use Scenario: Mounted on line interface cards handling T1/E1 signals in central office equipment. IC Role / Device Role / Timing Role: Standoff-clamp protector on tip/ring pairs, triggered by fast-rising EFT bursts (IEC 61000-4-4) or induced surges. Use Value: Sub-nanosecond response ensures clamping occurs before transients exceed receiver IC absolute maximum ratings (typically ±15 V). |
| Motor Drive DC Bus Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Placed across DC bus of 400 V industrial motor drives subject to inductive kickback from contactor switching. IC Role / Device Role / Timing Role: Unidirectional suppressor referenced to negative rail, absorbing stored inductive energy during IGBT turn-off. Use Value: 600W rating handles repetitive 100–200 A surge currents without thermal runaway, extending bus capacitor life. |
Use Scenario: Integrated into photovoltaic string combiner boxes to protect MPPT controllers from lightning surges on long DC runs. IC Role / Device Role / Timing Role: High-VWM TVS connected between PV+ and ground, activated only during >356 V transients to avoid leakage-induced power loss. Use Value: 356 V VWM allows full utilization of 1000 V PV system voltage while maintaining >100 V safety margin to clamping threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse P6KE440A | Higher VBR range (418–462 V), tighter tolerance (±5% vs ±10%), lower clamping voltage (602 V vs 631 V) at same IPP. | Better suited for designs requiring tighter voltage control and lower let-through voltage under surge. | Select P6KE440A when clamping precision and reduced stress on downstream components are critical. |
| ON Semiconductor 1.5KE440A | Same VWM (356 V), identical DO-204AC package, but rated for 1500 W peak power (1.5 kW) and higher IPP (2.2 A). | Supports higher-energy surges (e.g., direct lightning injection testing) but requires larger PCB layout clearance due to higher dissipation. | Choose 1.5KE440A for mission-critical infrastructure where surge immunity beyond IEC 61000-4-5 Level 4 is mandated. |
Compared with P6KE440, the P6KE440A offers improved clamping consistency and lower let-through voltage, while the 1.5KE440A provides significantly higher surge energy handling-making the latter appropriate for front-end protection where the former better fits space-constrained, cost-sensitive secondary-stage applications.
Availability
P6KE440 is available at Aetrix Electronics and suitable for industrial power supply input protection, telecom line card surge suppression, and motor drive DC bus protection requiring stable component supply and consistent surge performance across production batches.
Supply support for P6KE440 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, including TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 qualification capability.
The P6KE series was developed for high-reliability industrial and telecom surge protection, emphasizing robust 600W pulse handling, tight thermal stability, and UL/IEC-compliant packaging for harsh-environment deployment.
FAQ
What is the maximum clamping voltage of the P6KE440 under rated surge conditions?
The P6KE440 clamps to a maximum of 631 V when subjected to its rated 1.0 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the highest voltage seen across the device during surge conduction - a critical parameter for ensuring protected ICs remain within their absolute maximum voltage ratings. The P6KE440 achieves this clamping performance while maintaining low dynamic impedance and sub-nanosecond response.
Is the P6KE440 suitable for bidirectional transient protection?
No, the P6KE440 is a unidirectional TVS diode, indicated by its single cathode band and specified electrical characteristics for reverse-biased operation only. For bidirectional protection, Taiwan Semiconductor offers the P6KE440CA variant (with 'CA' suffix), which provides symmetrical clamping in both polarities. Using the unidirectional P6KE440 in AC or bipolar signal paths risks forward conduction and potential failure; always verify polarity alignment in circuit layout before deploying the P6KE440.
What is the standoff voltage (VWM) of the P6KE440, and why does it matter?
The P6KE440 has a maximum standoff voltage (VWM) of 356 V - the highest DC or RMS voltage it can block continuously without exceeding 1 µA leakage. This parameter defines the safe operating margin below breakdown: for example, in a 400 V DC bus, the P6KE440 would not be suitable, but it is well-matched to 336 V nominal telecom systems or 380 VAC-derived rails after rectification. Selecting a TVS with adequate VWM prevents nuisance conduction and power loss while preserving surge headroom.
Does the P6KE440 meet automotive-grade reliability standards?
The base P6KE440 is not AEC-Q101 qualified; however, Taiwan Semiconductor offers the P6KE440H variant (with 'H' suffix) that is explicitly AEC-Q101 qualified for automotive applications. The P6KE440H shares identical electrical specs and DO-204AC packaging but undergoes additional stress testing for temperature cycling, humidity, and mechanical robustness. For under-hood or infotainment power rail protection, specify P6KE440H - the standard P6KE440 is intended for industrial and telecom use where automotive qualification is not required.
How does the P6KE440's thermal performance compare to similar 600W TVS diodes?
The P6KE440 is rated for a maximum junction temperature of +175°C and exhibits a VBR temperature coefficient of 0.110 %/°C - consistent with industry-standard silicon avalanche TVS devices. Its thermal resistance (RθJA) is optimized for the DO-204AC package with 9.5 mm lead lengths, enabling 5 W steady-state dissipation at 75°C ambient. When mounted per JEDEC guidelines (5 × 5 mm copper pads), the P6KE440 sustains repeated surges with minimal thermal drift, outperforming lower-cost alternatives with looser VBR tolerances and higher RθJA.
P6KE440 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):
- 356V
- Voltage - Breakdown (Min):
- 396V
- Voltage - Clamping (Max) @ Ipp:
- 631V
- Current - Peak Pulse (10/1000µs):
- 1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE440 FAQ
1.How can I place an order for P6KE440 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE440 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 P6KE440 reliable?
The price and inventory of P6KE440 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE440 is usually 5 days.
3.What payment methods are accepted for P6KE440?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE440 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE440?
P6KE440 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE440 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 P6KE440?
For technical support, including P6KE440 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE440 requirements.
6.How does Aetrix verify that P6KE440 is sourced from the original manufacturer or authorized distributors?
All P6KE440 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 P6KE440 meets industry standards.
7.What is the process for return or replacement of P6KE440?
All P6KE440 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE440, 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 P6KE440 part is unused and in its original packaging.
Return procedure for P6KE440:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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