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onsemi P6KE43ARL
- Part No.:
- P6KE43ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE43ARL.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,848
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Product details
Overview
P6KE43ARL 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 600 W peak pulse power (1 ms), 36.8 V working peak reverse voltage (VRWM), 43.05 V nominal breakdown voltage (VBR @ 1 mA), and clamps to ≤59.3 V at 10.1 A peak pulse current (IPP). Used in power supplies and industrial control systems to protect downstream ICs from ESD and surge events.
For engineers reviewing the P6KE43ARL datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ circuit operating voltage, VC ≤ protected device's absolute maximum rating, low leakage (<5 µA @ VRWM), fast response (<1 ns), and UL 497B recognition for isolated loop protection.
Technical Context
The P6KE43ARL operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (IR ≤ 5 µA @ 36.8 V), then avalanches sharply at VBR = 40.9–45.2 V to limit transient overvoltage. Its thermal resistance (RJL = 20 °C/W) and steady-state power rating (5.0 W @ TL ≤ 25°C) support reliable operation in leaded through-hole mounting with 3/8″ lead length.
It complies with UL 497B for isolated loop circuit protection and meets Class 3 ESD immunity (>16 kV HBM). The device exhibits a temperature coefficient of 0.101 %/°C for VBR, enabling predictable voltage drift across −55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W @ 1 ms - limits energy dissipation during 8.3 ms half-sine surges without failure |
| Working Peak Reverse Voltage | 36.8 V - maximum continuous DC or peak AC voltage the device blocks before clamping |
| Breakdown Voltage | 40.9–45.2 V @ 1 mA - precise avalanche onset range ensuring consistent turn-on behavior |
| Clamping Voltage | ≤59.3 V @ 10.1 A IPP - guarantees protected circuit sees no more than this voltage during worst-case surge |
| Leakage Current | ≤5 µA @ 36.8 V - negligible standby power loss and minimal loading on source circuits |
| Response Time | <1 ns - enables suppression before sensitive logic or analog stages are overstressed |
| ESD Rating | Class 3 (>16 kV HBM) - exceeds IEC 61000-4-2 Level 4 for system-level ESD robustness |
Pinout & Package
Surmetic-40 axial-leaded plastic package (Case 017AA), cathode indicated by polarity band. Leads are corrosion-resistant, solderable, rated for 260°C @ 1/16″ from case for 10 seconds. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during clamping | Connected to ground or low-impedance return path; carries full surge current during avalanche |
| Cathode | High-side connection point | Connected to protected line (e.g., VIN, signal rail); polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection - satisfies safety-critical telecom and industrial interface requirements |
| Low Clamping Ratio | VC / VBR ≈ 1.45 - tight voltage margin between breakdown and clamp ensures minimal overvoltage stress on protected ICs |
| Thermal Robustness | RJL = 20 °C/W - enables stable operation up to +150°C junction temperature with standard leaded mounting |
| Pb-Free Option Available | P6KE43ARLG variant - RoHS-compliant without performance trade-off; same electrical specs and package dimensions |
Applications
| Industrial Power Supplies | Medical Equipment Inputs |
|---|---|
Use Scenario: Input stage of 48 V DC-DC converter subjected to load-dump transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional shunt TVS diode clamping positive-going surges on main input rail. Use Value: Limits voltage to ≤59.3 V, protecting primary-side controller ICs rated for 65 V absolute maximum. | Use Scenario: Patient-connected sensor interface exposed to ESD events during handling or cable coupling. IC Role / Device Role / Timing Role: Front-end transient suppressor on analog input lines prior to instrumentation amplifier. Use Value: Withstands >16 kV HBM ESD and clamps sub-1 ns, preventing latch-up or damage to precision front-end components. |
| Process Control I/O Modules | Business Machine Power Rails |
Use Scenario: 24 V digital input channel receiving signals from external PLCs with long wiring runs susceptible to inductive switching spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on field-side input node, referenced to local ground. Use Value: Absorbs 600 W surges while maintaining VRWM ≥ 24 V, ensuring no false triggering during normal operation. | Use Scenario: Main 12 V supply rail in multifunction printer exposed to hot-plug and capacitive discharge transients. IC Role / Device Role / Timing Role: Bulk transient suppressor placed near power entry connector. Use Value: Provides certified UL 497B protection, meeting safety agency requirements for commercial office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Surface-mount DO-214AA package; same VRWM (36.8 V), slightly lower VC (59.0 V @ 10.3 A) | Requires PCB rework for SMT layout; better high-frequency surge response due to lower parasitic inductance | Select when board space is constrained and automated assembly is preferred over through-hole |
| 1.5KE43A | Same axial package but higher peak power (1500 W); VRWM = 36.8 V, VC = 61.3 V @ 24.4 A | Over-spec'd for 600 W use cases; larger physical size and higher cost where not needed | Select only when system-level surge testing requires >600 W capability or legacy design reuse mandates 1.5 kW rating |
Compared with SMBJ43A and 1.5KE43A, the P6KE43ARL offers optimal balance of proven axial-leaded reliability, UL 497B certification, and cost-effective 600 W surge handling - making it ideal for industrial and medical designs where leaded mounting and safety compliance are prioritized over miniaturization or extreme power headroom.
Availability
P6KE43ARL is available at Aetrix Electronics and suitable for industrial power supplies, medical equipment inputs, and process control I/O modules requiring stable component supply with full traceability and lifecycle management.
Supply support for P6KE43ARL 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 (now onsemi) is a global semiconductor supplier specializing in power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The P6KE43ARL belongs to the P6KE6.8A Series of 600 W axial-leaded TVS diodes, engineered specifically for cost-sensitive, high-reliability transient protection in communication systems, power supplies, and industrial controls.
FAQ
What is the maximum clamping voltage of the P6KE43ARL under surge conditions?
The P6KE43ARL has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated peak pulse current (IPP) of 10.1 A, measured using the standardized 1 ms exponential waveform. This value is guaranteed across manufacturing lots and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within their absolute maximum voltage ratings. The P6KE43ARL achieves this while maintaining low leakage and fast response.
Is the P6KE43ARL RoHS compliant and lead-free?
Yes, the P6KE43ARL is RoHS compliant and lead-free. Its "RL" suffix denotes tape-and-reel packaging, and the "G" variant (P6KE43ARLG) explicitly confirms Pb-free construction per J-STD-609. Both variants meet RoHS Directive 2011/65/EU and have identical electrical specifications, thermal performance, and mechanical dimensions - allowing drop-in replacement in environmentally regulated designs without redesign. The P6KE43ARL itself is manufactured to the same Pb-free standard.
Does the P6KE43ARL have UL recognition for safety-critical applications?
Yes, the P6KE43ARL carries UL 497B recognition (File #E210057, Category QVGQ2) for isolated loop circuit protection - confirmed in the official ON Semiconductor documentation for the full P6KE6.8A–P6KE200A series. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown tests, validating its use in telecom interfaces, medical isolation barriers, and industrial safety systems where third-party safety approval is mandatory. The P6KE43ARL is explicitly included in this UL listing.
What is the operating temperature range for the P6KE43ARL?
The P6KE43ARL is rated for an operating and storage temperature range of −55°C to +150°C. Its junction-to-lead thermal resistance (RJL = 20°C/W) and specified derating curves allow stable operation across this full range when mounted with 3/8″ lead length. The temperature coefficient of breakdown voltage is 0.101 %/°C, enabling predictable VBR shift in thermal cycling environments. This makes the P6KE43ARL suitable for under-hood automotive ancillaries, factory-floor controllers, and outdoor power equipment where ambient extremes occur.
How does the P6KE43ARL compare to bidirectional TVS diodes in surge protection?
The P6KE43ARL is unidirectional and optimized for DC-biased lines where only positive-going transients must be suppressed - such as VIN rails or single-polarity signal paths. Unlike bidirectional devices (e.g., P6KE43CA), it provides tighter clamping (lower VC/VBR ratio) and higher surge current capability in the forward direction. It cannot suppress negative excursions below ground; for AC or bipolar signals, a bidirectional variant is required. System-level selection depends on signal polarity, grounding scheme, and applicable surge standards - the P6KE43ARL is purpose-built for asymmetric DC protection.
P6KE43ARL 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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A (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
P6KE43ARL FAQ
1.How can I place an order for P6KE43ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE43ARL 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 P6KE43ARL reliable?
The price and inventory of P6KE43ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE43ARL is usually 5 days.
3.What payment methods are accepted for P6KE43ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE43ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE43ARL?
P6KE43ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE43ARL 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 P6KE43ARL?
For technical support, including P6KE43ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE43ARL requirements.
6.How does Aetrix verify that P6KE43ARL is sourced from the original manufacturer or authorized distributors?
All P6KE43ARL 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 P6KE43ARL meets industry standards.
7.What is the process for return or replacement of P6KE43ARL?
All P6KE43ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE43ARL, 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 P6KE43ARL part is unused and in its original packaging.
Return procedure for P6KE43ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE43ARL Tags
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onsemi
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