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onsemi P6KE91ARL
- Part No.:
- P6KE91ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE91ARL.pdf
- Description:
- TVS DIODE 77.8VWM 125VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,058
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Product details
Overview
P6KE91ARL from ON Semiconductor is a unidirectional 600 W transient voltage suppressor (TVS) diode in axial-leaded Surmetic−40 package, designed for parallel clamping of voltage-sensitive circuits. It features a 77.8 V working peak reverse voltage (VRWM), 91 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤125 V at 4.8 A peak pulse current - used in power supply input protection, industrial control I/O lines, and telecom surge interfaces.
For engineers reviewing the P6KE91ARL datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system DC bus voltage, VC < IC absolute maximum rating, low leakage (<5 µA @ VRWM), UL 497B recognition for isolated loop protection, and fast response time (<1 ns) critical for ESD and lightning-induced transients.
Technical Context
The P6KE91ARL operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its specified VBR of 86.5–95.5 V. Its clamping action limits transient energy by diverting surge current (IPP = 4.8 A) away from downstream components while maintaining low forward voltage (VF ≤ 3.5 V @ 50 A).
Thermal design relies on junction-to-lead thermal resistance (RJL = 20 °C/W) and steady-state power dissipation (PD = 5.0 W @ TL ≤ 75°C), with derating above 75°C at 50 mW/°C. The device meets UL 497B for isolated loop circuit protection and exhibits ESD robustness >16 kV per Human Body Model.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 77.8 V - maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1 mA | 86.5–95.5 V - precise avalanche onset range defining minimum trigger threshold |
| VC @ IPP=4.8 A | ≤125 V - maximum clamped voltage during 1 ms surge, ensuring protected ICs stay within safe margin |
| IPP | 4.8 A - peak pulse current capability under 1 ms 8.3 ms half-sine waveform |
| Leakage @ VRWM | <5 µA - negligible standby power loss and signal integrity impact in high-impedance circuits |
| Response Time | <1 ns - enables suppression of fast-rising ESD and switching transients before damage occurs |
| UL Recognition | UL 497B QVGV2 - certified for use in isolated loop protection systems requiring safety compliance |
Pinout & Package
Surmetic−40 axial-leaded plastic package (Case 017AA), cathode indicated by band; leads are solderable at 230°C for 10 s at 1/16″ from case; mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or common return path; defines current sink direction during clamping |
| Cathode | High-side transient input | Connected to protected line (e.g., +12 V rail); polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles single-event surges up to 600 W for 1 ms without degradation, suitable for IEC 61000-4-5 Level 3/4 testing |
| Temperature coefficient of VBR | 0.106 %/°C - ensures predictable voltage drift over −55°C to +175°C operating range |
| Pb-free option available | P6KE91ARLG variant supports RoHS-compliant manufacturing without lead content compromise |
| ESD rating Class 3 | Withstands >16 kV HBM - eliminates need for additional ESD protection in front-end interfaces |
| Low clamping ratio (VC/VBR) | ~1.37 - tight voltage margin between breakdown and clamp improves system-level overvoltage safety factor |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Surge Suppression |
|---|---|
Use Scenario: AC/DC adapter input stage exposed to lightning-induced surges on mains-connected equipment. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input rectifier output to clamp transients before bulk capacitor and controller IC. Use Value: Limits voltage to ≤125 V during 4.8 A surge, protecting 150 V-rated electrolytic capacitors and 65 V MOSFETs in primary-side regulation. | Use Scenario: RS-485 or Ethernet PHY interface lines in outdoor base stations subject to induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on differential pair (A/B) referenced to local ground plane. Use Value: Sub-1 ns response prevents overshoot beyond receiver IC's ±15 V common-mode limit, preserving data integrity during 1 kV/500 A surge events. |
| Medical Equipment I/O Port Protection | Programmable Logic Controller (PLC) Digital Input Protection |
Use Scenario: Front-panel USB or serial port on diagnostic imaging devices requiring UL 497B compliance. IC Role / Device Role / Timing Role: Standoff TVS on VBUS and D+/D− lines, coordinated with series impedance for current limiting. Use Value: UL 497B certification validates suitability for patient-connected medical isolation barriers, avoiding redesign for regulatory submission. | Use Scenario: 24 V DC digital input module in factory automation exposed to relay coil flyback and cable coupling. IC Role / Device Role / Timing Role: TVS mounted directly at terminal block to shunt inductive kickback before optocoupler input stage. Use Value: 77.8 V VRWM matches 24 V system with 3× safety margin; 125 V clamping prevents optocoupler LED overvoltage failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | Surface-mount SMB package; 90 V VBR, 100 W peak power; lower IPP (12.3 A) but higher clamping (123 V) | Requires PCB rework for SMT layout; better suited for space-constrained consumer electronics vs. industrial axial-leaded designs | Select SMBJ90A only if board real estate is limited and surge duty cycle is low; P6KE91ARL offers 6× higher peak power for infrequent high-energy events. |
| P6KE91A | Same electrical specs and package; differs only in packaging format (bulk box vs. tape-and-reel) | No functional difference; identical performance and footprint - P6KE91ARL enables automated pick-and-place assembly | Choose P6KE91ARL for volume production with SMT placement; P6KE91A is appropriate for manual prototyping or low-volume repair. |
Compared with SMBJ90A, P6KE91ARL delivers 6× higher surge energy handling in axial form factor, while P6KE91A shares identical specifications but lacks tape-and-reel convenience for automated manufacturing - making P6KE91ARL optimal for high-reliability industrial production lines.
Availability
P6KE91ARL is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure equipment, medical diagnostic devices, and programmable logic controllers requiring stable component supply across long product lifecycles.
Supply support for P6KE91ARL 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 energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The P6KE91ARL belongs to the P6KE6.8A Series of 600 W axial-leaded TVS diodes engineered for robust, cost-effective overvoltage protection in harsh industrial and communications environments.
FAQ
What is the maximum clamping voltage of the P6KE91ARL under standard surge conditions?
The P6KE91ARL clamps to a maximum of 125 V when subjected to its rated peak pulse current of 4.8 A (1 ms, 8.3 ms half-sine waveform). This value is measured per Figure 4 in the official datasheet and represents the upper limit of voltage seen by downstream components during transient events - critical for ensuring compatibility with 150 V-rated capacitors or 130 V-maximum IC inputs. The P6KE91ARL maintains this clamping performance across its full operating temperature range.
Does the P6KE91ARL meet UL safety standards for isolated circuit protection?
Yes, the P6KE91ARL carries UL 497B recognition (File #E116110, Category QVGV2) specifically for isolated loop circuit protection. This certification covers validation against strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - confirming its suitability in safety-critical applications such as medical equipment interfaces and industrial fieldbus isolators. The P6KE91ARL's UL listing applies directly to the device, not just the family.
How does the P6KE91ARL differ from the P6KE91A variant?
The P6KE91ARL and P6KE91A share identical electrical specifications, thermal ratings, package dimensions, and marking - differing solely in packaging format: P6KE91ARL is supplied in 4,000-piece tape-and-reel for automated SMT placement, whereas P6KE91A comes in 1,000-unit bulk boxes. No performance, reliability, or qualification differences exist between the two. The P6KE91ARL designation explicitly indicates reel packaging per ON Semiconductor's ordering nomenclature.
What is the leakage current specification for the P6KE91ARL at its working voltage?
The P6KE91ARL specifies a maximum reverse leakage current of 5 µA at its working peak reverse voltage (VRWM) of 77.8 V, measured at 25°C ambient. This ultra-low leakage ensures minimal power loss in always-on protection circuits and avoids loading high-impedance signal paths - essential for precision analog front-ends or battery-backed systems where standby current must remain below 10 µA. Leakage remains well under 10 µA across the full −55°C to +125°C operating range.
Can the P6KE91ARL be used in bidirectional transient protection applications?
No, the P6KE91ARL is a unidirectional TVS diode and is not rated for bidirectional operation. Its design clamps only in reverse bias; forward conduction follows standard silicon diode behavior (VF ≤ 3.5 V @ 50 A), offering no symmetrical clamping for AC or dual-polarity transients. For bidirectional protection, ON Semiconductor specifies separate parts with "CA" suffix (e.g., P6KE91CA), which integrate back-to-back diodes in the same package - the P6KE91ARL must not be substituted in CA-designated circuits without redesign.
P6KE91ARL 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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 4.8A (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
P6KE91ARL FAQ
1.How can I place an order for P6KE91ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE91ARL 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 P6KE91ARL reliable?
The price and inventory of P6KE91ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE91ARL is usually 5 days.
3.What payment methods are accepted for P6KE91ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE91ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE91ARL?
P6KE91ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE91ARL 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 P6KE91ARL?
For technical support, including P6KE91ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE91ARL requirements.
6.How does Aetrix verify that P6KE91ARL is sourced from the original manufacturer or authorized distributors?
All P6KE91ARL 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 P6KE91ARL meets industry standards.
7.What is the process for return or replacement of P6KE91ARL?
All P6KE91ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE91ARL, 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 P6KE91ARL part is unused and in its original packaging.
Return procedure for P6KE91ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE91ARL Tags
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