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onsemi P6KE56AG
- Part No.:
- P6KE56AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE56AG.pdf
- Description:
- TVS DIODE 47.8VWM 77VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,369
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Product details
Overview
P6KE56AG 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 56 V breakdown voltage (VBR), 77 V maximum clamping voltage (VC) at 7.8 A peak pulse current (IPP), and 600 W peak pulse power rating per 1 ms waveform - deployed in power supplies, industrial controls, and medical equipment for overvoltage protection.
For engineers reviewing the P6KE56AG datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (47.8 V), clamping performance under IEC 61000-4-5 surge conditions, thermal resistance (20 °C/W), ESD robustness (>16 kV HBM), and UL 497B recognition for isolated loop circuit protection.
Technical Context
The P6KE56AG operates as a silicon avalanche diode with fast response time (<1 ns) and low leakage (<5 µA @ 47.8 V). Its unidirectional polarity enables DC-biased line protection where reverse conduction must be blocked until clamping threshold is exceeded.
It is rated for nonrepetitive 600 W surges per Figure 4 waveform (10/1000 µs), derated above 25°C ambient or 50°C lead temperature, with steady-state dissipation limited to 5.0 W at TL ≤ 25°C and thermal resistance RJL = 20 °C/W - requiring careful PCB layout and heatsinking for sustained pulse duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 53.2–58.8 V @ 1 mA test current - defines precise voltage threshold at which avalanche conduction begins |
| Clamping Voltage (VC) | 77 V @ 7.8 A peak pulse current - maximum voltage seen by protected circuit during 1 ms surge |
| Working Peak Reverse Voltage (VRWM) | 47.8 V - maximum continuous DC or peak AC voltage the device blocks without leakage exceeding 5 µA |
| Peak Pulse Power (PPK) | 600 W @ TL ≤ 25°C, 1 ms waveform - determines surge energy handling capability per transient event |
| Leakage Current (IR) | <5 µA @ 47.8 V - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Response Time | <1 ns - enables suppression before sensitive ICs experience overstress from fast-rising ESD or lightning-induced transients |
| Temperature Coefficient | 0.103 %/°C - quantifies VBR drift with junction temperature, critical for stable clamping across −55 to +150°C range |
Pinout & Package
Surmetic-40 axial-leaded plastic package (Case 017AA), cathode indicated by band; leads are solderable at 260°C for 10 seconds at 1/16″ from case. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or negative rail in unidirectional clamp configuration; carries full surge current during clamping |
| Cathode | High-side connection point | Marked with band; connected to protected line; reverse-biased during normal operation, avalanches when VIN exceeds VRWM |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Qualified for isolated loop circuit protection - meets dielectric withstand, endurance, and strike voltage requirements for telecom and industrial safety compliance |
| Pb-Free Construction | G-suffix denotes RoHS-compliant Surmetic-40 package - eliminates lead contamination risk in assembly and end-of-life recycling |
| ESD Robustness | Class 3 HBM (>16 kV) - protects downstream logic and analog interfaces against human-body model discharge events |
| Thermal Performance | RJL = 20 °C/W - enables predictable junction temperature rise under pulse loading, supporting reliability modeling in thermal-aware designs |
Applications
| Industrial Power Supply Protection | Medical Equipment Surge Suppression |
|---|---|
Use Scenario: Input stage of 48 V DC industrial SMPS exposed to load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rails to clamp surges before they reach rectifier, controller, and bulk capacitor. Use Value: Clamps 600 W transients to ≤77 V, preventing overvoltage failure of 60 V-rated MOSFETs and electrolytic capacitors. | Use Scenario: Signal lines (e.g., RS-485, CAN) connecting patient monitors to central nursing stations in hospital networks. IC Role / Device Role / Timing Role: Line-end TVS on isolated data ports to absorb ESD and induced surges while maintaining galvanic isolation integrity. Use Value: UL 497B certification validates safe use in medically isolated circuits; <1 ns response prevents data corruption during 8 kV contact discharge. |
| Process Control I/O Protection | Business Machine Power Input |
Use Scenario: 24 V DC digital input modules in PLC backplanes subjected to field-wiring transients and relay coil flyback. IC Role / Device Role / Timing Role: Per-channel TVS on each optocoupler input to limit voltage excursion during 100 A/1 ms surge events. Use Value: 47.8 V VRWM matches 24 V system margin; 7.8 A IPP rating handles worst-case IEC 61000-4-4 burst currents without degradation. | Use Scenario: AC/DC adapter input stage in multifunction printers and copiers operating in shared office power environments. IC Role / Device Role / Timing Role: Primary-side TVS across bridge rectifier output to suppress line-to-line and line-to-ground surges entering the PSU. Use Value: 600 W peak power rating absorbs repetitive 10/1000 µs surges from nearby motor starts or HVAC cycling without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | Surface-mount SMB package; 58 V VBR; 600 W rating; lower IPP (8.3 A) but higher VC (93.6 V) | Requires PCB rework for SMT layout; unsuitable for through-hole legacy designs or high-vibration mechanical mounting | Select when board space is constrained and automated assembly is preferred over axial-leaded hand-soldering. |
| 1.5KE56A | Same axial package; identical VRWM (47.8 V), VBR, and VC; but 1500 W peak power rating and higher IPP (26.3 A) | Overqualified for 600 W surge classes; may exhibit slower response due to larger junction capacitance | Select only when system-level surge testing exceeds IEC 61000-4-5 Level 4 (4 kV/2 Ω) and requires headroom beyond P6KE56AG's rating. |
Compared with SMBJ58A, P6KE56AG offers lower clamping voltage (77 V vs. 93.6 V) and proven axial-mechanical reliability; compared with 1.5KE56A, it provides tighter thermal management (20 °C/W vs. ~10 °C/W) and optimized cost for 600 W-class protection without overdesign.
Availability
P6KE56AG is available at Aetrix Electronics and suitable for industrial power supplies, medical equipment, process control systems, and business machines requiring stable component supply with UL 497B compliance and Pb-free construction.
Supply support for P6KE56AG 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 part of onsemi) is a global semiconductor supplier specializing in power management, analog, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The P6KE56AG belongs to the P6KE6.8A Series - a family of 600 W axial-leaded TVS diodes engineered for cost-effective, high-reliability transient suppression in communication systems, numerical controls, medical equipment, and power supplies.
FAQ
What is the clamping voltage of the P6KE56AG and how is it measured?
The P6KE56AG has a maximum clamping voltage (VC) of 77 V, measured at a peak pulse current (IPP) of 7.8 A using the standardized 1 ms exponential waveform (10/1000 µs shape per Figure 4). This value represents the highest voltage the device allows across protected circuitry during a surge event, ensuring downstream components remain within safe operating limits. The P6KE56AG's VC is confirmed in the Electrical Characteristics table on page 2 of the official ON Semiconductor datasheet.
Does the P6KE56AG meet UL safety standards for circuit protection?
Yes, the P6KE56AG is UL Recognized under UL 497B (File #E210057) for isolated loop circuit protection - covering dielectric withstand, endurance conditioning, strike voltage breakdown, and discharge testing. This certification applies across the full P6KE6.8A–P6KE200A series, including the P6KE56AG, and confirms suitability for safety-critical telecom, industrial, and medical applications where regulatory compliance is mandatory.
What is the meaning of the "G" suffix in P6KE56AG?
The "G" suffix in P6KE56AG indicates a Pb-free (RoHS-compliant) version of the Surmetic-40 axial package. It uses lead-free terminations and halogen-free molding compound, meeting environmental directives without altering electrical specifications. The P6KE56AG shares identical VRWM, VBR, VC, and surge ratings with the non-G variant (P6KE56A), differing only in material composition and soldering profile compatibility.
Can the P6KE56AG be used in bidirectional protection circuits?
No, the P6KE56AG is a unidirectional TVS diode and must not be used for bidirectional surge suppression. Its cathode-band polarity means it conducts only during positive transients on the cathode side relative to anode - reverse voltage beyond VRWM will cause breakdown, but negative excursions are blocked. For bidirectional protection, ON Semiconductor offers the P6KE56CA series (with "CA" suffix), which is explicitly designed for symmetrical clamping in AC or floating-line applications.
What is the thermal resistance and maximum junction temperature of the P6KE56AG?
The P6KE56AG has a thermal resistance from junction to lead (RJL) of 20 °C/W, measured with 3/8″ lead length at TL ≤ 25°C. Its absolute maximum junction temperature is +150°C, with storage temperature spanning −55°C to +150°C. These values are specified in the Maximum Ratings table (page 1) and require proper lead heatsinking and ambient derating per Figure 5 to avoid thermal runaway during repeated surge events.
P6KE56AG 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):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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
P6KE56AG FAQ
1.How can I place an order for P6KE56AG through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE56AG 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 P6KE56AG reliable?
The price and inventory of P6KE56AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE56AG is usually 5 days.
3.What payment methods are accepted for P6KE56AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE56AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE56AG?
P6KE56AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE56AG 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 P6KE56AG?
For technical support, including P6KE56AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE56AG requirements.
6.How does Aetrix verify that P6KE56AG is sourced from the original manufacturer or authorized distributors?
All P6KE56AG 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 P6KE56AG meets industry standards.
7.What is the process for return or replacement of P6KE56AG?
All P6KE56AG units undergo pre-shipment inspection (PSI). If there is an issue with P6KE56AG, 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 P6KE56AG part is unused and in its original packaging.
Return procedure for P6KE56AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE56AG Tags
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