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onsemi P6KE43AG
- Part No.:
- P6KE43AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE43AG.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,916
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Product details
Overview
P6KE43AG 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 36.8 V working peak reverse voltage (VRWM), 43.05 V nominal breakdown voltage (VBR) at 1 mA test current, 59.3 V clamping voltage (VC) at 10.1 A peak pulse current (IPP), and 600 W peak pulse power rating at 1 ms. It is used to protect DC power rails and signal lines in industrial power supplies and communication interfaces.
For engineers reviewing the P6KE43AG datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating voltage, VC vs. protected IC's absolute maximum rating, thermal derating above 25°C ambient, and UL 497B recognition for isolated loop circuit protection.
Technical Context
The P6KE43AG operates as a silicon avalanche diode with fast <1 ns response time and low leakage (<5 µA at VRWM). Its clamping behavior is defined by a well-controlled breakdown knee and stable temperature coefficient (0.101 %/°C), enabling predictable overvoltage protection across −55°C to +150°C junction temperature range.
It is rated for 600 W nonrepetitive peak pulse power per 1 ms 10/1000 µs waveform, with steady-state power dissipation limited to 5.0 W at TL ≤ 25°C and derated linearly above 50°C. Thermal resistance from junction-to-lead is 20°C/W, supporting robust heat transfer through axial leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 36.8 V - Maximum continuous reverse operating voltage before significant leakage; must exceed system DC rail or signal peak. |
| VBR @ IT=1 mA | 40.9–45.2 V - Breakdown occurs within this band; ensures reliable turn-on before protected circuit damage. |
| VC @ IPP=10.1 A | 59.3 V - Clamped voltage during 1 ms surge; must stay below downstream IC's absolute max rating. |
| IPP | 10.1 A - Peak current handled at VC; defines surge energy capacity (≈30 J for 1 ms pulse). |
| Leakage @ VRWM | <5 µA - Negligible standby power loss and signal loading on protected line. |
| Response Time | <1 ns - Enables suppression before most ICs experience latch-up or gate oxide stress. |
| UL Recognition | UL 497B - Certified for isolated loop circuit protection; validates reliability under surge endurance and dielectric tests. |
Pinout & Package
Surmetic-40 axial-leaded plastic package (Case 017AA), cathode indicated by polarity band. Leads are solderable per 260°C/10 s standard. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; forms current path during reverse-biased clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., +12 V rail); polarity band identifies this terminal for correct orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy surges (e.g., IEC 61000-4-5 Level 4) without degradation when properly mounted. |
| Clamping ratio (VC/VBR) | ~1.45 - Tight ratio ensures minimal overvoltage overshoot relative to breakdown threshold. |
| ESD rating Class 3 (>16 kV HBM) | Provides system-level ESD immunity without requiring additional discrete ESD protection. |
| Pb-free (G suffix) construction | Complies with RoHS Directive 2011/65/EU; compatible with lead-free reflow and wave soldering processes. |
| Temperature coefficient 0.101 %/°C | Ensures predictable VBR shift over temperature; simplifies design margining across industrial temperature range. |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
Use Scenario: Protecting 48 V DC input stage of programmable logic controller (PLC) power module against lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +48 V rail and chassis ground, clamping transients before they reach upstream DC/DC converter ICs. Use Value: Limits voltage to 59.3 V during 10.1 A surge, staying 10.7 V below typical 70 V absolute max rating of input-stage MOSFETs. | Use Scenario: Safeguarding RS-485 transceiver data lines connected to outdoor Ethernet switches exposed to induced surges. IC Role / Device Role / Timing Role: TVS diode installed differential-mode across A/B bus lines, referenced to local ground, suppressing common-mode transients. Use Value: Sub-1 ns response prevents data corruption during fast-rising EFT bursts; UL 497B certification validates suitability for telecom isolation barriers. |
| Medical Equipment Input Stage | Automotive Body Control Module |
Use Scenario: Shielding 24 V auxiliary supply input of patient monitor front-end board from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC input, positioned upstream of LDO regulators and microcontroller power pins. Use Value: Withstands 600 W surges while maintaining <5 µA leakage-critical for low-power sleep modes and battery-backed operation. | Use Scenario: Protecting LIN bus transceiver supply line in door module against battery reverse-connection and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS tied between LIN VCC and ground, absorbing negative-going spikes during ignition events. Use Value: 36.8 V VRWM matches 12 V system with margin; 59.3 V VC stays below 60 V automotive IC stress limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Surface-mount SMB package; same VRWM (36.8 V), slightly lower VC (58.1 V at 10.3 A), 600 W rating. | Requires PCB layout change; better suited for automated SMT assembly and space-constrained designs. | Select SMBJ43A when board real estate is limited and reflow compatibility is required. |
| P6KE43A | Identical electrical specs and Surmetic-40 package; differs only in Pb content (non-RoHS compliant). | No functional difference; used where legacy Pb-based soldering or exemption applies. | Select P6KE43A only if Pb-free compliance is not mandated by end-market regulations. |
Compared with SMBJ43A, P6KE43AG offers axial-leaded through-hole mounting for high-reliability mechanical retention and manual repairability; compared with P6KE43A, it provides identical performance with RoHS-compliant Pb-free terminations-critical for medical and EU-market deployments.
Availability
P6KE43AG is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure equipment, medical diagnostic devices, and automotive body electronics requiring stable component supply and long-term lifecycle support.
Supply support for P6KE43AG 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, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The P6KE43AG belongs to the P6KE6.8A Series of 600 W axial-leaded TVS diodes, engineered for cost-effective, high-reliability transient suppression in harsh environments where robustness and regulatory compliance (UL 497B, RoHS) are mandatory.
FAQ
What is the maximum clamping voltage of the P6KE43AG under surge conditions?
The P6KE43AG has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated peak pulse current of 10.1 A per the 1 ms 10/1000 µs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage seen by downstream components during a surge event. Engineers must ensure this VC remains below the absolute maximum voltage rating of protected ICs. The P6KE43AG maintains this clamping performance across its full operating temperature range due to its specified temperature coefficient of 0.101 %/°C.
Does the P6KE43AG meet UL safety standards for circuit protection?
Yes, the P6KE43AG is UL Recognized under UL 497B (File #E210057) for isolated loop circuit protection. This certification covers the entire P6KE6.8A series and confirms successful completion of rigorous tests including Strike Voltage Breakdown, Endurance Conditioning, Temperature, Dielectric Voltage-Withstand, and Discharge testing. UL 497B recognition distinguishes P6KE43AG from generic TVS diodes and validates its use in safety-critical telecom, medical, and industrial isolation barriers where regulatory compliance is mandatory.
How does the P6KE43AG differ from the P6KE43A variant?
The P6KE43AG and P6KE43A share identical electrical specifications-including VRWM (36.8 V), VBR (40.9–45.2 V), VC (59.3 V), and 600 W peak power-and use the same Surmetic-40 axial-leaded package. The sole difference is that P6KE43AG carries the "G" suffix indicating Pb-free terminations compliant with RoHS Directive 2011/65/EU, whereas P6KE43A uses traditional SnPb solder plating. No performance or reliability trade-offs accompany the Pb-free construction of P6KE43AG, making it the default choice for new designs targeting global markets.
What is the thermal derating behavior of the P6KE43AG above 25°C ambient?
The P6KE43AG's steady-state power dissipation (PD) is rated at 5.0 W at TL ≤ 25°C and derates linearly at 50 mW/°C above TL = 50°C, per Figure 5 in the datasheet. For surge conditions, peak pulse power remains 600 W at TL = 25°C but must be reduced per the pulse derating curve (Figure 2): at TL = 75°C, peak power is ~70% of rated value (~420 W). This derating ensures junction temperature stays within the −55°C to +150°C operating range. Thermal resistance from junction-to-lead is 20°C/W, so proper lead heatsinking is essential for high-duty-cycle applications.
Can the P6KE43AG be used in bidirectional protection configurations?
No, the P6KE43AG is a unidirectional TVS diode and is not suitable for bidirectional transient suppression. Its internal structure allows conduction only in reverse bias (cathode positive relative to anode), making it appropriate for protecting DC rails or single-polarity signal lines. For AC or bipolar signal paths-such as RS-232, USB, or Ethernet-bidirectional variants like P6KE43CA or SMAJ43CA must be used. Attempting to use P6KE43AG in bidirectional mode risks forward conduction during positive transients, potentially damaging the device or failing to clamp correctly.
P6KE43AG 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):
- 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
P6KE43AG FAQ
1.How can I place an order for P6KE43AG through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE43AG 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 P6KE43AG reliable?
The price and inventory of P6KE43AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE43AG is usually 5 days.
3.What payment methods are accepted for P6KE43AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE43AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE43AG?
P6KE43AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE43AG 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 P6KE43AG?
For technical support, including P6KE43AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE43AG requirements.
6.How does Aetrix verify that P6KE43AG is sourced from the original manufacturer or authorized distributors?
All P6KE43AG 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 P6KE43AG meets industry standards.
7.What is the process for return or replacement of P6KE43AG?
All P6KE43AG units undergo pre-shipment inspection (PSI). If there is an issue with P6KE43AG, 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 P6KE43AG part is unused and in its original packaging.
Return procedure for P6KE43AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE43AG Tags
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