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onsemi P6KE39ARL
- Part No.:
- P6KE39ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE39ARL.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,938
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Product details
Overview
P6KE39ARL from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode in DO-15 package, designed for IEC 61000-4-2 ESD protection (30 kV air/contact) and IEC 61000-4-4 surge immunity (4 kV level 4). It features a 39 V breakdown voltage (VBR = 37.1–41.0 V at 1 mA), 53.9 V clamping voltage at 11.1 A (10/1000 µs), and operates up to 175 °C junction temperature. It is used in AC/DC power input stages of industrial SMPS and telecom line interfaces.
For engineers reviewing the P6KE39ARL datasheet, P6KE39ARL pinout, P6KE39ARL application, or P6KE39ARL equivalent, key selection criteria include clamping voltage margin versus system rail, peak pulse current capability under 10/1000 µs waveform, thermal derating above 25 °C, and compatibility with lead-free reflow per J-STD-020 MSL level 1.
Technical Context
This planar-junction TVS diode uses silicon avalanche technology to clamp transients by entering controlled reverse breakdown. Its low dynamic resistance (RD = 1.16 Ω at 10/1000 µs) ensures tight voltage control during surge events, while its high Tj max (175 °C) enables stable operation in thermally constrained environments like enclosed power supplies.
The device complies with IEC 61000-4-2 (30 kV contact/air), IEC 61000-4-4 (4 kV level 4), and UL 497B - making it suitable for secondary-side surge protection where low leakage (<0.5 µA at VRM = 33 V) and minimal capacitance (~200 pF at 1 MHz, VR = 1 V) are required to avoid signal integrity impact.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 600 W - sustains 11.1 A surge at 53.9 V clamping without failure at 25 °C ambient |
| Breakdown Voltage (VBR) | 37.1–41.0 V at 1 mA - defines minimum trigger threshold; ±5% tolerance ensures predictable turn-on |
| Clamping Voltage (VCL) | 53.9 V at 11.1 A (10/1000 µs) - maximum voltage seen by protected circuit during rated surge |
| Leakage Current (IRM) | ≤0.5 µA at 33 V - negligible standby power loss and no interference with high-impedance sensing nodes |
| Junction Temperature Range | −55 to +175 °C - supports operation in automotive engine compartments and industrial enclosures without derating |
| ESD Withstand (IEC 61000-4-2) | 30 kV contact & air discharge - exceeds level 4, eliminating need for additional ESD staging in front-end inputs |
| Surge Standard Compliance | IEC 61000-4-4 level 4 (4 kV) - protects against fast-rising ring wave transients on AC mains and DC rails |
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: A = 6.05–6.75 mm (body length), B = 26–31 mm (lead length), C = 2.95–3.53 mm (diameter), D = 0.71–0.88 mm (lead diameter).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward bias; connected to protected line | Must be tied to lower-potential node (e.g., GND or return path) when protecting positive rail |
| Cathode (banded end) | Avalanche conduction terminal in reverse bias; connected to protected line | Connected to the line being protected (e.g., +12 V rail); clamps to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Planar junction construction | Enables low leakage (<0.5 µA) and stable VBR over temperature - critical for precision power monitoring circuits |
| High Tj max rating (175 °C) | Allows placement near heat sources (e.g., MOSFETs, transformers) without thermal shutdown or parameter drift |
| Low dynamic resistance (1.16 Ω) | Minimizes clamping voltage rise under high-current surges - preserves margin between VCL and IC absolute max ratings |
| UL 497B certified (QVGQ2.E136224) | Validates suitability for telecom/data line surge protection per safety standards - reduces certification effort |
| MSL level 1 moisture sensitivity | Eliminates bake requirement before SMT assembly - compatible with standard reflow profiles and automated production |
Applications
| Industrial AC/DC Power Supplies | Telecom Line Interface Protection |
|---|---|
Use Scenario: Secondary-side DC output rail (e.g., +12 V, +24 V) in DIN-rail mounted SMPS exposed to load dump and coupling transients. IC Role / Device Role: Unidirectional TVS placed between output rail and chassis ground to clamp positive-going surges. Use Value: Clamps to 53.9 V at 11.1 A, maintaining safe margin below 60 V-rated downstream regulators and controllers. |
Use Scenario: Protection of RS-485 transceiver pins (A/B lines) in outdoor base stations subject to lightning-induced surges. IC Role / Device Role: Paired unidirectional TVS devices (one per line) referenced to local ground to suppress common-mode transients. Use Value: Low capacitance (~200 pF) avoids signal edge degradation at 10 Mbps; 30 kV ESD rating prevents latch-up during field maintenance. |
| Automotive Body Control Modules | Smart Meter Power Input Stages |
Use Scenario: 12 V battery-supplied microcontroller power rail in BCMs subjected to ISO 7637-2 pulse 1/2a/3a transients. IC Role / Device Role: Primary overvoltage clamp on VDD rail, upstream of LDO or buck converter input. Use Value: 175 °C Tj rating allows mounting directly on PCB near power stage; 600 W rating handles repetitive load dump energy. |
Use Scenario: Mains-connected meter with isolated DC-DC converter input subjected to EN 61000-4-4 fast transients. IC Role / Device Role: Secondary-side TVS on isolated 5 V or 3.3 V logic supply to protect metrology ICs and RTC. Use Value: UL 497B listing validates use in safety-isolated domains; low IR ensures no self-heating error in precision reference paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A (Diodes Inc.) | DO-214AA package; 36 V VBR (min 34.2 V); 58.1 V VCL at 10.3 A; 600 W rating | Surface-mount only; higher thermal resistance (RθJA ≈ 50 °C/W vs. DO-15's ~35 °C/W) | Preferred for space-constrained PCBs where reflow compatibility is prioritized over axial lead robustness |
| 1.5KE39A (ON Semiconductor) | DO-201AD package; identical 39 V VBR range; 58.1 V VCL at 10.3 A; same 600 W rating | Larger body (A = 9.5 mm vs. 6.4 mm); higher thermal mass but less board area efficiency | Chosen when legacy footprint compatibility or higher surge repetition tolerance is required |
Compared with SMBJ36A and 1.5KE39A, P6KE39ARL offers tighter VCL (53.9 V vs. ≥58.1 V), lower RD (1.16 Ω vs. ≥1.4 Ω), and optimized thermal performance in compact axial form - making it preferred for high-reliability, thermally dense power rail protection.
Availability
P6KE39ARL is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, telecom line interface protection, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for P6KE39ARL 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, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
P6KE39ARL belongs to ST's P6KE series of planar TVS diodes - engineered specifically for high-reliability secondary-side surge protection in switch-mode power supplies and communication interfaces where low leakage, high Tj, and precise clamping are mandatory.
FAQ
What is the maximum clamping voltage of P6KE39ARL under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 53.9 V at 11.1 A for a 10/1000 µs waveform at 25 °C ambient. This value increases with junction temperature at a rate of 10.0 × 10⁻⁴/°C, reaching approximately 56.2 V at 125 °C junction temperature per the αT coefficient in Table 2.
Can P6KE39ARL be used for bidirectional protection?
No - P6KE39ARL is unidirectional (denoted by "A" suffix). For bidirectional protection, use P6KE39CARL, which has symmetrical breakdown in both polarities and identical VBR (37.1–41.0 V) and VCL (53.9 V) ratings in either direction under reverse surge conditions.
What is the recommended PCB layout for optimal thermal performance?
Mount P6KE39ARL with ≥1 cm² copper area under each lead on FR4 board (70 µm Cu thickness), per Figure 12. Thermal resistance drops from 4.5 °C/W (no copper) to ~1.8 °C/W with 5 cm² total copper, enabling full 600 W rating up to 100 °C ambient without derating.
Does P6KE39ARL meet automotive AEC-Q200 requirements?
No - P6KE39ARL is not AEC-Q200 qualified. While it operates up to 175 °C junction temperature and passes JESD22-A108 temperature cycling, it lacks the full stress test suite (e.g., vibration, board flex, lifetime reliability) required for automotive qualification. Use SMAJ36A-Q or similar AEC-Q200 parts for automotive applications.
P6KE39ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- T-18, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.2A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
P6KE39ARL FAQ
1.How can I place an order for P6KE39ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE39ARL 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 P6KE39ARL reliable?
The price and inventory of P6KE39ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE39ARL is usually 5 days.
3.What payment methods are accepted for P6KE39ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE39ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE39ARL?
P6KE39ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE39ARL 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 P6KE39ARL?
For technical support, including P6KE39ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE39ARL requirements.
6.How does Aetrix verify that P6KE39ARL is sourced from the original manufacturer or authorized distributors?
All P6KE39ARL 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 P6KE39ARL meets industry standards.
7.What is the process for return or replacement of P6KE39ARL?
All P6KE39ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE39ARL, 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 P6KE39ARL part is unused and in its original packaging.
Return procedure for P6KE39ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE39ARL Tags
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