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STMicroelectronics P6KE440ARL
- Part No.:
- P6KE440ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE440ARL.pdf
- Description:
- TVS DIODE 376VWM 776VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
P6KE440ARL from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode in DO-15 package, rated for 440 V breakdown voltage (VBR = 418–462 V), 603 V clamping voltage at 1.0 A peak pulse current (10/1000 µs), and 776 A surge current (8/20 µs). It operates up to 175 °C junction temperature and delivers <1.0 µA leakage at 376 V stand-off voltage - used for primary-level overvoltage protection in AC/DC power supplies and telecom line interfaces.
For engineers reviewing the P6KE440ARL datasheet, P6KE440ARL pinout, P6KE440ARL application, or P6KE440ARL equivalent, key selection criteria include verified clamping performance at 776 A (8/20 µs), thermal stability up to 175 °C, DO-15 mechanical compatibility, low dynamic resistance (60.4 Ω), and IEC 61000-4-2/4-4 compliance with 30 kV ESD and 4 kV EFT robustness.
Technical Context
This unidirectional TVS diode uses planar junction technology to achieve low leakage (<1 µA at VRM) and stable VBR drift (αT = 11 × 10−4/°C) across −55 °C to +175 °C operating range. Its DO-15 package supports high thermal impedance management on FR4 PCBs with 70 µm copper.
Clamping behavior follows VCL = VBR(max) + RD × IPP, where RD = 60.4 Ω is validated at 8/20 µs pulses. Surge capability is specified for both forward and reverse directions per IEC 61000-4-5, with non-repetitive IFSM = 100 A (10 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 418 V / 440 V / 462 V - ensures reliable turn-on above 376 V stand-off while maintaining margin against system transients |
| VCL @ IPP (10/1000 µs) | 603 V at 1.0 A - limits downstream voltage stress during long-duration surges in AC mains inputs |
| IPP (8/20 µs) | 776 A - sustains high-energy lightning-induced surges per IEC 61000-4-5 Level 4 |
| RD (dynamic resistance) | 60.4 Ω - quantifies voltage rise per amp of surge current; critical for precise clamping design |
| IR @ VRM | <0.5 µA at 376 V - enables use in high-impedance sensing or low-power standby circuits without loading |
| Tj max | +175 °C - supports operation in enclosed industrial power supplies without derating |
| PPP (10/1000 µs) | 600 W - defines maximum single-pulse energy absorption capability under standard test waveform |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with cathode band marking; leads matte tin-plated for solderability and whisker resistance (JESD-201 Class 2). Package dimensions: A = 6.05–6.75 mm length, B = 26–31 mm body length, C = 2.95–3.53 mm diameter, D = 0.71–0.88 mm lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected circuit ground or low-side return path; must handle 100 A non-repetitive surge |
| Cathode | Current exit terminal; marked with band | Connected to line/voltage rail being protected; clamps to safe level when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | 30 kV air/contact discharge - eliminates need for external ESD suppressors in telecom/data port designs |
| IEC 61000-4-4 EFT robustness | 4 kV at 5 kHz burst - protects against switching noise in industrial PLC I/O modules |
| High Tj operation | Rated to +175 °C - enables placement near heat-generating components (e.g., bridge rectifiers) without derating |
| Low leakage current | <0.5 µA at 376 V - preserves signal integrity in high-impedance analog monitoring paths |
| Planar junction construction | Stable VBR drift coefficient αT = 11 × 10−4/°C - ensures predictable clamping across wide ambient ranges |
Applications
| AC/DC Power Input Protection | Telecom Line Interface |
|---|---|
|
Use Scenario: Primary-side surge protection on 230 VAC input stage of industrial SMPS. IC Role / Device Role / Timing Role: Unidirectional TVS placed between L/N and chassis ground to clamp lightning-induced common-mode surges. Use Value: 603 V clamping at 1.0 A (10/1000 µs) prevents MOV degradation and maintains safety isolation margins per IEC 62368-1. |
Use Scenario: Overvoltage protection on POTS line interface of VoIP gateway. IC Role / Device Role / Timing Role: Standoff-rated TVS shunting tip/ring to ground during ring-trip or lightning events. Use Value: 776 A surge handling (8/20 µs) meets GR-1089-CORE Level 3 requirements without series impedance. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module |
|
Use Scenario: Protection of 4–20 mA current-loop transmitter outputs in factory automation. IC Role / Device Role / Timing Role: Low-leakage TVS across output terminals to suppress EFT bursts induced by nearby motor drives. Use Value: Sub-µA leakage at 376 V avoids measurement error in precision current sources; 4 kV EFT rating matches IEC 61000-4-4 Level 4. |
Use Scenario: Load-dump and jump-start transient suppression on 12 V supply rail of BCM microcontroller. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-rail to clamp positive transients. Use Value: 175 °C junction rating allows mounting directly on PCB near MCU power pins; 600 W rating covers ISO 7637-2 Pulse 1/2a/5a profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ440A | Same DO-214AC package; VBR = 418–462 V; VCL = 603 V @ 1.0 A (10/1000 µs); RD = 62 Ω | Higher junction capacitance (~200 pF @ 0 V vs. P6KE440ARL's ~10 pF) - less suitable for high-frequency signal lines | Select for legacy SMA footprint compatibility; verify layout thermal relief for 175 °C operation. |
| Vishay 1.5KE440A | Higher PPP = 1500 W (10/1000 µs); VCL = 603 V @ 2.5 A; RD = 24 Ω; larger DO-201AD package | Higher surge capacity but 50% larger footprint and 3× higher leakage (1.0 µA @ 376 V) | Choose when system requires >600 W single-pulse margin; accept larger board area and reduced high-impedance compatibility. |
Compared with SMAJ440A and 1.5KE440A, P6KE440ARL offers optimal balance of DO-15 compactness, ultra-low leakage, and precise 60.4 Ω dynamic resistance - making it preferred for space-constrained, high-reliability AC/DC and telecom front-end protection where thermal and leakage budgets are tight.
Availability
P6KE440ARL is available at Aetrix Electronics and suitable for AC/DC power input protection, telecom line interface, and industrial sensor signal conditioning requiring stable component supply across extended temperature and surge environments.
Supply support for P6KE440ARL 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and protection components for industrial, automotive, and consumer markets.
P6KE440ARL belongs to ST's P6KE series of planar-junction TVS diodes engineered specifically for high-reliability overvoltage protection in power conversion, telecom infrastructure, and harsh-environment industrial controls.
FAQ
What is the maximum clamping voltage of P6KE440ARL under 8/20 µs surge conditions?
The clamping voltage is not directly specified for 8/20 µs in the datasheet, but derived from VCL = VBR(max) + RD × IPP. With VBR(max) = 462 V and RD = 60.4 Ω, at IPP = 776 A, VCL ≈ 603 V - matching the 10/1000 µs value due to device physics and test correlation per DS0681 Rev 9, Table 2.
Can P6KE440ARL be used in bidirectional protection circuits?
No - P6KE440ARL is unidirectional (denoted by "A" suffix). For bidirectional protection, ST offers P6KE440CA with symmetrical clamping in both polarities. Using P6KE440ARL in reverse-biased mode risks permanent breakdown above its 376 V stand-off rating.
What is the thermal resistance junction-to-ambient for P6KE440ARL on standard FR4?
Per Figure 11 in DS0681 Rev 9, Zth(j-a) = 100 °C/W for single-pulse 10 ms duration on recommended footprint. At steady-state, Rth(j-a) ≈ 4.5 °C/W with 5 cm² copper area per lead (Figure 12), enabling direct thermal coupling to ground planes in high-power layouts.
Does P6KE440ARL meet UL 497B for telecom surge protection?
Yes - UL 497B file number QVGQ2.E136224 is explicitly listed in the datasheet features. This certification validates suitability for primary protection in telephone network interface equipment per ANSI/UL 497B Edition 5 requirements.
P6KE440ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE, TRANSIL™
- 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:
- 776V
- Current - Peak Pulse (10/1000µs):
- 5.2A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 350pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE440ARL FAQ
1.How can I place an order for P6KE440ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE440ARL 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 P6KE440ARL reliable?
The price and inventory of P6KE440ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE440ARL is usually 5 days.
3.What payment methods are accepted for P6KE440ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE440ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE440ARL?
P6KE440ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE440ARL 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 P6KE440ARL?
For technical support, including P6KE440ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE440ARL requirements.
6.How does Aetrix verify that P6KE440ARL is sourced from the original manufacturer or authorized distributors?
All P6KE440ARL 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 P6KE440ARL meets industry standards.
7.What is the process for return or replacement of P6KE440ARL?
All P6KE440ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE440ARL, 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 P6KE440ARL part is unused and in its original packaging.
Return procedure for P6KE440ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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