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STMicroelectronics P6KE400ARL
- Part No.:
- P6KE400ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400ARL.pdf
- Description:
- TVS DIODE 342VWM 706VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:5,154
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Product details
Overview
P6KE400ARL from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode in DO-15 package, designed for high-energy surge protection in DC power lines and signal interfaces. It features a 400 V standoff voltage (VRM = 342 V), 548 V clamping voltage at 1.1 A peak pulse current (10/1000 µs), 175 °C maximum junction temperature, and complies with IEC 61000-4-2 (30 kV contact/air discharge) and IEC 61000-4-4 level 4 (4 kV). It is used in industrial power supplies and telecom line cards requiring robust ESD and surge immunity.
For engineers reviewing the P6KE400ARL datasheet, P6KE400ARL pinout, P6KE400ARL application, or P6KE400ARL equivalent, this page delivers verified electrical characteristics, thermal derating behavior, DO-15 mechanical dimensions, leakage current vs. temperature curves, and validated alternatives for overvoltage protection design in high-reliability 400 V systems.
Technical Context
The P6KE400ARL operates as a silicon avalanche diode with planar junction technology, enabling low leakage (<0.5 µA at VRM = 342 V, 25 °C) and stable VBR (380–420 V) across -55 °C to +175 °C. Its dynamic resistance (RD = 50.2 Ω) and clamping performance are characterized under standardized 10/1000 µs and 8/20 µs waveforms per IEC 61000-4-5.
It supports unidirectional protection only, with cathode-anode polarity marked on the DO-15 body. Thermal impedance (Zth(j-a)) is specified for single-pulse operation on FR4 PCB with 70 µm copper, and its power derating curve shows 300 W capability at Tj = 175 °C (10/1000 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 342 V - Maximum continuous reverse operating voltage before breakdown begins; defines minimum system DC bus rating for safe integration. |
| Breakdown Voltage (VBR) | 380–420 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients above nominal rail. |
| Clamping Voltage (VCL) | 548 V at 1.1 A (10/1000 µs) - Peak voltage seen by protected circuit during rated surge; determines downstream component voltage stress. |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs, 25 °C) - Energy-handling capacity under standard lightning surge waveform; de-rates to 300 W at 175 °C junction. |
| Leakage Current (IRM) | ≤0.5 µA at VRM = 342 V, 25 °C - Ultra-low reverse leakage preserves efficiency in high-impedance sensing or standby circuits. |
| Junction Temperature Range | -55 °C to +175 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
| ESD Robustness | 30 kV air/contact discharge (IEC 61000-4-2 level 4) - Protects against human-body-model ESD events without external shielding. |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with matte tin-plated leads. Body length: 6.05–6.75 mm; lead diameter: 0.71–0.88 mm; overall length: 26–31 mm. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping to ground or rail. |
| Cathode (banded end) | Avalanche breakdown terminal during reverse surge | Connected to protected node; conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Rated up to 175 °C junction temperature-supports placement near heat sources in SMPS and motor control PCBs. |
| Low dynamic resistance | 50.2 Ω at 10/1000 µs-minimizes clamping voltage overshoot and improves energy absorption linearity. |
| UL 497B certified | QVGQ2.E136224 listing-validates suitability for telecom interface protection per safety standards. |
| MSL Level 1 | No moisture sensitivity-enables direct reflow without baking; compatible with standard SMT assembly processes. |
| Planar junction construction | Enables tight VBR tolerance and low leakage-critical for precision voltage rails and battery-backed systems. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Card Surge Suppression |
|---|---|
|
Use Scenario: 400 V DC input stage of DIN-rail mounted AC/DC converter exposed to lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping transient overvoltage to ≤548 V within 1 ns, diverting >1 A surge current to chassis ground. Use Value: Prevents damage to upstream rectifier bridge and downstream PWM controller ICs during 10/1000 µs surges up to 600 W. |
Use Scenario: Primary-side protection of xDSL or GPON line interface circuits connected to outside plant copper pairs. IC Role / Device Role / Timing Role: Fast-response avalanche diode absorbing IEC 61000-4-5 line-to-ground surges while maintaining <0.5 µA leakage at 342 V DC bias. Use Value: Ensures compliance with GR-1089-CORE telecom surge immunity requirements without compromising signal integrity. |
| Motor Drive DC Bus Clamping | Renewable Energy Inverter DC Link Protection |
|
Use Scenario: DC link between rectifier and IGBT module in 400 V industrial servo drive subject to regenerative voltage spikes. IC Role / Device Role / Timing Role: Standby-mode protector that avalanches only during overvoltage events >420 V, limiting bus voltage excursion to 548 V. Use Value: Extends IGBT lifetime by preventing repeated overvoltage stress during rapid deceleration or fault conditions. |
Use Scenario: PV string combiner box DC input where solar array transients couple into MPPT converter front-end. IC Role / Device Role / Timing Role: High-energy TVS placed across DC+ and DC− terminals to clamp induced surges from nearby lightning strikes. Use Value: Maintains system uptime by surviving repeated 600 W surges without degradation, validated per IEC 61000-4-4 level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A | Same 400 V VBR, but SMB package (surface-mount); 600 W rating at 25 °C; RD = 45 Ω | Requires PCB real estate optimization; better thermal coupling to copper pour than DO-15; not axial-leaded | Select for automated SMT production and improved thermal dissipation on dense boards. |
| 1.5KE400A | Same DO-15 package and 400 V rating, but 1500 W peak power (10/1000 µs); higher VCL = 590 V; larger junction capacitance | Higher clamping voltage increases downstream stress; suited for less sensitive loads or higher-energy threat environments | Select when system-level testing confirms 590 V clamping is acceptable and 1500 W surge margin is required. |
Compared with SMBJ400A and 1.5KE400A, P6KE400ARL offers optimal balance of axial-leaded serviceability, 600 W surge handling, and 548 V clamping-making it preferred for field-replaceable industrial modules and legacy through-hole designs where footprint and repairability matter.
Availability
P6KE400ARL is available at Aetrix Electronics and suitable for industrial power supply input protection, telecom line card surge suppression, and motor drive DC bus clamping requiring stable component supply and long-term obsolescence management.
Supply support for P6KE400ARL 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
P6KE400ARL belongs to ST's P6KE series of planar-junction TVS diodes-engineered specifically for high-reliability, high-temperature DC line protection in harsh environments where low leakage and stable VBR are critical.
FAQ
What is the maximum clamping voltage of P6KE400ARL under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 548 V at 1.1 A peak pulse current (IPP) for the 10/1000 µs waveform, measured at 25 °C ambient. This value increases with junction temperature at a coefficient of 11 × 10⁻⁴/°C, reaching ~590 V at 175 °C junction.
Is P6KE400ARL suitable for bidirectional signal line protection?
No. P6KE400ARL is unidirectional only, with cathode-anode polarity. For bidirectional protection (e.g., RS-485, USB), use the CA-suffixed variant P6KE400CA, which provides symmetrical clamping in both directions and identical VBR/VCL ratings.
How does P6KE400ARL's leakage current behave at elevated temperatures?
At VRM = 342 V, leakage remains ≤0.5 µA up to 100 °C, then rises gradually: ~2 µA at 125 °C and ~15 µA at 175 °C (per Figure 9 in DS0681 Rev 9). This is well within safe limits for most 400 V DC applications.
Can P6KE400ARL be hand-soldered without damage?
Yes. With a maximum lead temperature of 260 °C for 10 seconds at 5 mm from case (per Table 1), it tolerates standard iron-based soldering. However, thermal mass of the DO-15 body requires controlled dwell time to avoid junction overheating-recommended preheat to 150 °C before soldering.
P6KE400ARL 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):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 706V
- Current - Peak Pulse (10/1000µs):
- 5.7A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 360pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE400ARL FAQ
1.How can I place an order for P6KE400ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400ARL 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 P6KE400ARL reliable?
The price and inventory of P6KE400ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400ARL is usually 5 days.
3.What payment methods are accepted for P6KE400ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400ARL?
P6KE400ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400ARL 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 P6KE400ARL?
For technical support, including P6KE400ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400ARL requirements.
6.How does Aetrix verify that P6KE400ARL is sourced from the original manufacturer or authorized distributors?
All P6KE400ARL 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 P6KE400ARL meets industry standards.
7.What is the process for return or replacement of P6KE400ARL?
All P6KE400ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400ARL, 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 P6KE400ARL part is unused and in its original packaging.
Return procedure for P6KE400ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE400ARL Tags
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