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STMicroelectronics P6KE440CARL
- Part No.:
- P6KE440CARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE440CARL.pdf
- Description:
- TVS DIODE 376VWM 776VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,315
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Product details
Overview
P6KE440CARL from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode in DO-15 package, designed for high-energy surge protection in power and signal lines. It features a 440 V standoff voltage (VRM), 603 V clamping voltage at 1.0 A peak pulse current (10/1000 µs), 776 A maximum surge current (8/20 µs), 600 W peak pulse power, and operates up to 175 °C junction temperature - deployed in industrial AC/DC front-ends and telecom line interfaces.
For engineers reviewing the P6KE440CARL datasheet, P6KE440CARL pinout, P6KE440CARL application, or P6KE440CARL equivalent, key selection criteria include bidirectional clamping behavior, low dynamic resistance (5.2 Ω), IEC 61000-4-2 ±30 kV ESD robustness, and thermal stability at elevated Tj - critical for mains-connected equipment requiring long-term reliability under repetitive surges.
Technical Context
This TVS diode uses planar silicon junction technology optimized for low leakage (<0.5 µA at VRM = 376 V) and stable VBR drift (αT = 11 × 10⁻⁴ /°C). Its bidirectional structure enables symmetrical clamping on both polarities without external polarity management.
The device delivers 600 W (10/1000 µs) and up to 4 kW (8/20 µs) surge handling with a measured dynamic resistance of 5.2 Ω, enabling precise voltage limiting during fast transients. Thermal impedance is characterized for FR4 PCBs with standard DO-15 footprint, supporting reliable derating above 125 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 376 V - maximum continuous reverse operating voltage before conduction begins |
| Breakdown Voltage (VBR) | 418–462 V at 1 mA - ensures predictable turn-on threshold across temperature and production lot |
| Clamping Voltage (VCL) | 603 V at 1.0 A (10/1000 µs) - limits downstream circuit stress during surge events |
| Peak Pulse Current (IPP) | 776 A (8/20 µs) - supports high-energy lightning-induced surges per IEC 61000-4-5 |
| Dynamic Resistance (RD) | 5.2 Ω - determines voltage overshoot under fast-rising current transients |
| Junction Temperature Range | −55 °C to +175 °C - enables deployment in harsh environments including industrial motor drives and outdoor telecom cabinets |
| ESD Robustness | ±30 kV contact & air discharge (IEC 61000-4-2 Level 4) - exceeds automotive and industrial immunity requirements |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with cathode band marking. Leads are matte tin-plated for solderability and RoHS compliance. Package dimensions: length 26–31 mm, body diameter 2.95–3.53 mm, lead diameter 0.71–0.88 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward bias; common reference for bidirectional clamping | Connected to protected line; forms symmetrical clamp path with cathode during either polarity surge |
| Cathode (banded end) | Current exit terminal in forward bias; defines polarity marking for unidirectional variants | Provides visual orientation; in CA-type devices, functions identically to anode under reverse surge due to bidirectional structure |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or differential signals without polarity constraints |
| Low dynamic resistance (5.2 Ω) | Minimizes clamping voltage overshoot during 8/20 µs surges, reducing stress on downstream ICs |
| High junction temperature rating (175 °C) | Supports operation in enclosed, thermally constrained enclosures such as power supply housings |
| UL 497B certified (QVGQ2.E136224) | Validates suitability for primary-side telecom and data line surge protection per safety standards |
| IEC 61000-4-4 Level 4 compliance (4 kV) | Confirms immunity to fast transient bursts typical in industrial control cabinet environments |
Applications
| Industrial AC/DC Power Supplies | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protection of rectifier input stage against lightning-induced surges on 230 VAC mains feeders. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed across bridge rectifier input terminals. Use Value: Limits transient voltage to ≤603 V, preventing breakdown of 600 V-rated bridge diodes and bulk capacitors. |
Use Scenario: Surge suppression on POTS or xDSL line cards exposed to induced surges from nearby power lines. IC Role / Device Role / Timing Role: Bidirectional shunt element between tip/ring conductors and ground. Use Value: Clamps differential-mode surges up to 4 kV (IEC 61000-4-4) while maintaining <0.5 µA leakage at 376 V DC bias. |
| Motor Drive Control Boards | Outdoor IoT Gateway Power Inputs |
Use Scenario: Protection of microcontroller I/O and isolated feedback circuits from switching noise and back-EMF transients. IC Role / Device Role / Timing Role: Localized clamp on auxiliary 24 V DC supply rail feeding gate drivers and sensors. Use Value: Withstands repeated 10/1000 µs surges up to 600 W without parameter shift, ensuring long-term BOM stability. |
Use Scenario: Mains-powered cellular/Wi-Fi gateway mounted in unconditioned outdoor enclosures. IC Role / Device Role / Timing Role: First-stage protection on AC adapter input before fuse and MOV network. Use Value: Operates reliably at 175 °C junction temperature, eliminating thermal derating concerns in sealed, solar-heated housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440CA | DO-214AA package; 600 W rating; lower VBR tolerance (418–462 V same), but higher IPP (820 A @ 8/20 µs) | Surface-mount layout; better suited for automated assembly and space-constrained designs | Select when board real estate is limited and reflow compatibility is required; verify thermal pad layout for 175 °C operation |
| 1.5KE440CA | DO-201AD package; 1500 W rating; identical VBR/VCL specs but larger footprint and higher leakage (1.0 µA) | Higher energy handling for legacy through-hole designs where surge margin >600 W is mandated | Choose only if system-level testing requires >600 W headroom; avoid if leakage-critical analog sensing is present |
Compared with SMBJ440CA and 1.5KE440CA, P6KE440CARL offers optimal balance of axial-leaded manufacturability, 600 W surge capability, and ultra-low leakage - making it preferred for cost-sensitive, thermally demanding industrial power supplies where DO-15 mounting is established.
Availability
P6KE440CARL is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, telecom line interface protection, and outdoor IoT gateway power inputs requiring stable component supply and long-term obsolescence management.
Supply support for P6KE440CARL 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, delivering intelligent power, analog, MEMS, and microcontroller solutions for industrial, automotive, and consumer markets.
P6KE is part of ST's high-reliability TVS diode portfolio targeting robust overvoltage protection in mains-connected and telecom infrastructure applications - engineered for thermal resilience, low leakage, and repeatable clamping performance across extended temperature ranges.
FAQ
What is the difference between P6KE440A and P6KE440CA?
P6KE440A is unidirectional and conducts only in reverse bias, requiring correct polarity installation. P6KE440CA is bidirectional, providing symmetrical clamping for AC or differential signals without polarity sensitivity. Both share identical VBR (418–462 V), VCL (603 V), and surge ratings, but CA-type devices have mirrored junction structure enabling dual-polarity protection.
Can P6KE440CARL be used in parallel for higher surge current handling?
No - TVS diodes exhibit negative temperature coefficient and mismatched VBR tolerances, causing current imbalance. Parallel use risks thermal runaway and premature failure. For higher IPP, select a single higher-rated device like 1.5KE440CA or implement staged protection with upstream MOVs and downstream low-capacitance TVS.
What is the maximum recommended PCB copper area for thermal performance?
Per DS0681 Figure 12, thermal resistance drops from ~4.5 °C/W to ~2.0 °C/W when copper area under each lead increases from 0 to 5 cm² on FR4. For continuous 175 °C operation, ST recommends ≥3 cm² per lead with thermal vias to inner ground planes to maintain junction temperature within spec during repetitive surges.
Does P6KE440CARL meet UL 497B for telecom surge protection?
Yes - UL file number QVGQ2.E136224 explicitly covers P6KE440CARL for use in primary protector applications per UL 497B, including Category A (lightning) and Category B (inductive) surge conditions on telephone/data lines. Certification applies to the DO-15 package with matte tin leads.
P6KE440CARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- 175pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE440CARL FAQ
1.How can I place an order for P6KE440CARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE440CARL 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 P6KE440CARL reliable?
The price and inventory of P6KE440CARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE440CARL is usually 5 days.
3.What payment methods are accepted for P6KE440CARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE440CARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE440CARL?
P6KE440CARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE440CARL 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 P6KE440CARL?
For technical support, including P6KE440CARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE440CARL requirements.
6.How does Aetrix verify that P6KE440CARL is sourced from the original manufacturer or authorized distributors?
All P6KE440CARL 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 P6KE440CARL meets industry standards.
7.What is the process for return or replacement of P6KE440CARL?
All P6KE440CARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE440CARL, 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 P6KE440CARL part is unused and in its original packaging.
Return procedure for P6KE440CARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE440CARL Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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