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onsemi P6KE39AG
- Part No.:
- P6KE39AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE39AG.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,970
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Product details
Overview
P6KE39AG from ON Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in axial-leaded Surmetic-40 package, designed for parallel clamping of high-energy transients. It features 33.3 V working peak reverse voltage (VRWM), 53.9 V clamping voltage (VC) at 11.2 A peak pulse current (IPP), and 600 W peak pulse power rating at 1 ms. Used to protect power supplies, industrial controls, and communication interfaces against ESD and surge events.
For engineers reviewing the P6KE39AG datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system DC bus voltage, VC margin relative to IC absolute maximum ratings, leaded package thermal derating above 50°C, and UL 497B recognition for isolated loop protection compliance.
Technical Context
The P6KE39AG operates as a silicon avalanche diode with fast turn-on response (<1 ns typical) and low dynamic impedance during transient conduction. Its breakdown voltage (VBR) is specified at 37.1–41.0 V (min–max) with 1 mA test current, and temperature coefficient of VBR is +0.1 %/°C - enabling predictable voltage shift over operating temperature range (−55°C to +150°C).
It is rated for 600 W nonrepetitive peak pulse power per 1 ms waveform (Figure 4), with steady-state power dissipation limited to 5.0 W at TL ≤ 25°C and derated linearly above 50°C (50 mW/°C). Thermal resistance junction-to-lead is 20 °C/W, supporting direct PCB mounting without heatsinking for moderate duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 33.3 V - maximum continuous reverse operating voltage before clamping begins; must exceed circuit's DC or peak AC voltage. |
| VC @ IPP | 53.9 V @ 11.2 A - clamped voltage during 1 ms transient; defines worst-case stress on downstream components. |
| IPP | 11.2 A - peak pulse current capability at rated clamping voltage; determines survivability under IEC 61000-4-5 Level 4 surges. |
| Leakage Current | <5 µA @ VRWM - negligible standby power loss and minimal signal path loading in high-impedance circuits. |
| Response Time | <1 ns - ensures clamping activation before most semiconductor damage thresholds are exceeded. |
| UL Recognition | UL 497B certified - validated for isolated loop circuit protection including strike voltage, endurance, and dielectric withstand tests. |
Pinout & Package
Surmetic-40 axial-leaded plastic package (Case 017AA), cathode indicated by polarity band. Leads are solderable per J-STD-020; max solder temperature 260°C at 1/16″ from case for 10 seconds. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or common return; forms current path during reverse-biased clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., VIN, signal rail); polarity band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W Peak Pulse Power | Supports robust protection against IEC 61000-4-5 4 kV/2 Ω surge waveforms without degradation. |
| ESD Rating Class 3 (>16 kV HBM) | Meets stringent electrostatic discharge immunity requirements for end-user accessible ports. |
| Low Clamping Ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage margin between clamping and breakdown, improving protection headroom. |
| Pb-Free Construction | Complies with RoHS Directive 2011/65/EU; compatible with lead-free reflow and wave soldering processes. |
Applications
| Industrial Power Supply Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp positive-going surges before they reach upstream rectifier and regulator ICs. Use Value: Limits transient voltage to 53.9 V, well below 60 V absolute maximum rating of typical 24 V-input DC/DC controllers. | Use Scenario: RS-485 data line termination in building automation node subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Parallel-connected TVS on differential pair (A/B lines to GND) to shunt common-mode energy while preserving signal integrity. Use Value: Sub-1 ns response ensures clamping occurs before 1.2/50 µs surge peak reaches sensitive transceiver inputs. |
| Medical Equipment Input Stage | Automated Test Equipment (ATE) Signal Conditioning |
Use Scenario: Mains-derived 12 V auxiliary supply in diagnostic imaging subsystem requiring UL 497B-compliant isolation barrier protection. IC Role / Device Role / Timing Role: Primary overvoltage protector on secondary side of isolated DC/DC converter, referenced to safety ground. Use Value: UL 497B certification validates suitability for patient-connected equipment where loop protection reliability is mandated. | Use Scenario: Analog front-end input of precision DMM module handling external sensor signals prone to ESD during probe contact. IC Role / Device Role / Timing Role: Low-leakage (≤5 µA) TVS placed directly at connector to prevent charge accumulation and gate oxide damage to op-amps. Use Value: Leakage spec ensures no measurable offset drift in µV-level measurement paths during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Surface-mount SMB package; 36 V VRWM; 58.1 V VC @ 10.3 A; same 600 W rating but lower thermal resistance (junction-to-PCB). | Requires PCB layout change; better suited for automated assembly and higher-density designs. | Select when board space is constrained and reflow compatibility is required. |
| P6KE36A | Same axial package and construction; 30.8 V VRWM; 49.9 V VC @ 12 A; Pb-containing (non-RoHS) variant of identical family. | No functional or layout difference; differs only in lead finish and environmental compliance. | Select only if RoHS exemption applies and legacy sourcing is mandated. |
Compared with SMBJ36A, P6KE39AG offers higher VRWM and VC for 24–36 V systems needing tighter clamping margin, while P6KE36A provides identical form-factor replacement without RoHS compliance - making P6KE39AG optimal for new designs requiring both performance headroom and regulatory alignment.
Availability
P6KE39AG is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure, medical diagnostics, and automated test equipment requiring stable component supply and UL-recognized surge protection.
Supply support for P6KE39AG 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensors, and discrete devices for automotive, industrial, and cloud power applications.
The P6KE39AG belongs to the P6KE6.8A Series of axial-leaded TVS diodes engineered for cost-effective, high-reliability transient suppression in harsh environments - emphasizing UL 497B compliance, high surge tolerance, and stable parametric performance across temperature.
FAQ
What is the working peak reverse voltage (VRWM) of the P6KE39AG?
The P6KE39AG has a working peak reverse voltage (VRWM) of 33.3 V. This value represents the maximum continuous DC or peak AC voltage the device can block in normal operation without entering breakdown. It is selected to be equal to or greater than the circuit's operating voltage to ensure reliable standby behavior while allowing sufficient margin before clamping initiates during transients.
What clamping voltage does the P6KE39AG achieve at its rated peak pulse current?
The P6KE39AG achieves a maximum clamping voltage (VC) of 53.9 V at its rated peak pulse current (IPP) of 11.2 A, measured using the standard 1 ms exponential waveform (Figure 4). This clamping voltage defines the upper voltage limit imposed on protected circuitry during surge events and must be verified against the absolute maximum ratings of downstream ICs to ensure safe operation.
Is the P6KE39AG compliant with UL 497B for isolated loop protection?
Yes, the P6KE39AG is UL 497B recognized (File #E210057, QVGQ2 category) for isolated loop circuit protection. This certification confirms successful completion of rigorous tests including strike voltage breakdown, endurance conditioning, temperature cycling, dielectric withstand, and discharge validation - making it suitable for safety-critical applications such as medical and industrial control systems requiring certified transient suppression.
Does the P6KE39AG have a Pb-free construction?
Yes, the "G" suffix in P6KE39AG explicitly denotes a Pb-free package per J-STD-609. The device uses lead-free terminations and complies with RoHS Directive 2011/65/EU. It is qualified for lead-free soldering processes, including reflow and wave soldering, with maximum lead temperature of 260°C at 1/16″ from the case for 10 seconds.
What is the thermal resistance and steady-state power rating of the P6KE39AG?
The P6KE39AG has a thermal resistance junction-to-lead (RJL) of 20 °C/W and a steady-state power dissipation (PD) of 5.0 W at lead temperature (TL) ≤ 25°C. Power derates linearly at 50 mW/°C above TL = 50°C, per Figure 5. This thermal profile supports direct PCB mounting without heatsinking for intermittent surge duty but requires layout attention for sustained power dissipation scenarios.
P6KE39AG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- T-18, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- 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
P6KE39AG FAQ
1.How can I place an order for P6KE39AG through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE39AG 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 P6KE39AG reliable?
The price and inventory of P6KE39AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE39AG is usually 5 days.
3.What payment methods are accepted for P6KE39AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE39AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE39AG?
P6KE39AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE39AG 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 P6KE39AG?
For technical support, including P6KE39AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE39AG requirements.
6.How does Aetrix verify that P6KE39AG is sourced from the original manufacturer or authorized distributors?
All P6KE39AG 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 P6KE39AG meets industry standards.
7.What is the process for return or replacement of P6KE39AG?
All P6KE39AG units undergo pre-shipment inspection (PSI). If there is an issue with P6KE39AG, 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 P6KE39AG part is unused and in its original packaging.
Return procedure for P6KE39AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE39AG Tags
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