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onsemi P6KE36ARL
- Part No.:
- P6KE36ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE36ARL.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,488
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Product details
Overview
P6KE36ARL from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode in DO-15 package, designed for primary-level ESD and surge protection in DC power rails and signal lines. It features a 36 V breakdown voltage (VBR = 34.2–37.8 V), 49.9 V clamping voltage (VCL) at 12 A peak pulse current, and operates up to 175 °C junction temperature - deployed in industrial power supplies and telecom interface circuits.
For engineers reviewing the P6KE36ARL datasheet, P6KE36ARL pinout, P6KE36ARL application, or P6KE36ARL equivalent, key selection criteria include its 12 A IPP (10/1000 µs), 0.5 µA max reverse leakage at 29.4 V, 1.01 Ω dynamic resistance, and compliance with IEC 61000-4-2 (±30 kV contact/air) and IEC 61000-4-4 level 4 (4 kV).
Technical Context
The P6KE36ARL uses planar junction silicon technology optimized for low leakage (<0.5 µA at VRM) and high thermal stability up to 175 °C. Its unidirectional configuration provides asymmetric clamping - forward conduction only during reverse overvoltage events - enabling precise rail protection without interfering with normal DC bias paths.
It delivers 600 W peak pulse power under 10/1000 µs waveform and sustains 300 W at Tj = 175 °C. The device's VCL–IPP relationship is defined by VCL = VBR(max) + RD × IPP, where RD = 1.01 Ω ensures predictable voltage limiting across surge amplitudes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 34.2 / 36 / 37.8 V - defines minimum voltage at which TVS enters avalanche conduction; sets protection threshold above normal operating rail. |
| VCL @ IPP = 12 A | 49.9 V - maximum clamped voltage seen by protected circuit during 10/1000 µs surge; determines safe overvoltage margin for downstream ICs. |
| IPP (10/1000 µs) | 12 A - peak surge current capability before clamping exceeds rated VCL; defines survivability against common lightning-induced transients. |
| RD (dynamic resistance) | 1.01 Ω - slope of VCL vs. IPP curve; lower value enables tighter clamping control and reduced voltage overshoot under varying surge magnitudes. |
| IR @ VRM = 29.4 V | 0.5 µA max - reverse leakage at 82% of VBR; ensures minimal power loss and no interference with low-current sensor or reference circuits. |
| Tj operating range | −55 to +175 °C - extended junction temperature rating supports use in enclosed industrial enclosures and automotive under-hood environments. |
| ESD immunity | ±30 kV (IEC 61000-4-2, contact & air) - qualifies for direct user-interface port protection without additional external shielding. |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with cathode band marking. Body length 26–31 mm, diameter 2.95–3.53 mm, lead diameter 0.71–0.88 mm. Matte tin-plated leads compliant with J-STD-002 and MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry / Reverse voltage reference | Connected to system ground or low-side return path; establishes reference for clamping action when cathode is tied to protected line. |
| Cathode (banded end) | Protected line connection / Avalanche conduction node | Directly connected to the rail or signal requiring protection; conducts surge current to ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-4 level 4 surges (4 kV) on 24 V/48 V DC distribution buses. |
| 175 °C maximum junction temperature | Supports operation in thermally constrained spaces such as sealed power converters and outdoor telecom cabinets without derating. |
| 0.5 µA max reverse leakage at 29.4 V | Prevents measurable loading on precision analog rails and battery-backed circuits over full temperature range. |
| UL 497B certified (QVGQ2.E136224) | Validates suitability for secondary-circuit telecom surge protection per UL safety standards. |
| JEDEC DO-15 mechanical compatibility | Ensures drop-in replacement in legacy designs using standard axial-leaded TVS footprints and wave-solder processes. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power module exposed to induced surges from nearby motor switching. IC Role / Device Role: Primary overvoltage clamp on main DC bus prior to DC-DC converter input. Use Value: Limits transient voltage to ≤49.9 V during 12 A surge, preventing damage to upstream rectifier and downstream buck controller ICs. |
Use Scenario: RS-485 data line termination in remote I/O module installed in factory floor environment with frequent ESD events. IC Role / Device Role: Unidirectional shunt protector on A/B differential pair referenced to local ground. Use Value: Absorbs ±30 kV ESD strikes without latch-up, maintaining signal integrity and avoiding bus lockup during maintenance handling. |
| Automotive Body Control Module (BCM) Sensor Rail | Smart Meter AC/DC Auxiliary Supply |
Use Scenario: 5 V sensor supply rail in BCM subjected to load dump transients and ISO 7637-2 pulse 1/2a coupling. IC Role / Device Role: Secondary protection stage after LC filter, clamping residual spikes before LDO regulator input. Use Value: Withstands 175 °C ambient under hood conditions while delivering stable 0.5 µA leakage - preserving LDO regulation accuracy. |
Use Scenario: 12 V auxiliary supply derived from mains rectification in utility smart meter with long-term field deployment. IC Role / Device Role: Overvoltage suppressor on transformerless capacitive-drop supply output. Use Value: Maintains <1 µA leakage over 15-year lifetime, eliminating drift in metering reference voltages and reducing calibration drift risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | DO-214AA package; 600 W rating; VBR = 40–44.2 V; VCL = 58.1 V @ 10.3 A; RD = 1.3 Ω | Surface-mount footprint; higher clamping voltage reduces margin for 3.3 V/5 V logic protection but suits 24 V industrial rails. | Select SMBJ36A when board space is limited and reflow assembly is preferred over axial through-hole mounting. |
| 1N6277A | DO-15 package; 600 W rating; VBR = 33.3–36.7 V; VCL = 49.9 V @ 12 A; RD = 0.95 Ω; IR = 1.0 µA @ 29.4 V | Same form factor and clamping performance; slightly higher leakage limits use in ultra-low-power battery systems. | Choose 1N6277A only if ST sourcing is constrained and identical electrical behavior under 175 °C operation is confirmed. |
Compared with SMBJ36A and 1N6277A, P6KE36ARL offers the lowest RD-normalized clamping rise (1.01 Ω), tightest VBR tolerance (±5%), and best high-temperature leakage stability - making it optimal for thermally demanding, precision-rail applications where voltage margin is critical.
Availability
P6KE36ARL is available at Aetrix Electronics and suitable for industrial power supply input protection, telecom line interface protection, and automotive body control module sensor rail protection requiring stable component supply across multi-year production cycles.
Supply support for P6KE36ARL 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and protection components for industrial, automotive, and consumer markets.
P6KE36ARL belongs to the P6KE series - a family of planar-junction TVS diodes engineered specifically for high-reliability, high-temperature DC rail protection in harsh-environment equipment where low leakage and stable clamping are non-negotiable.
FAQ
What is the maximum clamping voltage of P6KE36ARL under a 10/1000 µs surge?
The maximum clamping voltage (VCL) of P6KE36ARL is 49.9 V when subjected to a 12 A peak pulse current with a 10/1000 µs waveform at Tamb = 25 °C. This value increases linearly with junction temperature due to the αT coefficient of 9.9 × 10−4/°C, reaching approximately 54.2 V at Tj = 175 °C.
Can P6KE36ARL be used in bidirectional signal line protection?
No - P6KE36ARL is a unidirectional TVS diode, meaning it clamps only during reverse-biased overvoltage events and conducts forward current like a standard diode. For bidirectional protection (e.g., RS-485, USB D+/D−), the P6KE36CA variant must be used, which features symmetrical avalanche characteristics across both polarities.
What is the recommended PCB layout for optimal thermal performance?
To maintain rated 175 °C junction temperature, ST recommends a minimum copper area of 2.5 cm² per lead on FR4 board with 70 µm copper thickness. Thermal resistance drops from 4.5 °C/W (no copper) to ~2.2 °C/W at 5 cm², directly improving surge energy handling and long-term reliability under repeated transient stress.
Does P6KE36ARL meet UL 497B requirements for telecom surge protection?
Yes - P6KE36ARL is certified under UL 497B with file number QVGQ2.E136224, confirming compliance for secondary-circuit surge protection in telecommunications equipment. This certification covers dielectric strength, flammability (UL94 V0), and impulse withstand per ANSI/UL 497B Annex C test protocols.
P6KE36ARL 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A (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
P6KE36ARL FAQ
1.How can I place an order for P6KE36ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE36ARL 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 P6KE36ARL reliable?
The price and inventory of P6KE36ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE36ARL is usually 5 days.
3.What payment methods are accepted for P6KE36ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE36ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE36ARL?
P6KE36ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE36ARL 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 P6KE36ARL?
For technical support, including P6KE36ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE36ARL requirements.
6.How does Aetrix verify that P6KE36ARL is sourced from the original manufacturer or authorized distributors?
All P6KE36ARL 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 P6KE36ARL meets industry standards.
7.What is the process for return or replacement of P6KE36ARL?
All P6KE36ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE36ARL, 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 P6KE36ARL part is unused and in its original packaging.
Return procedure for P6KE36ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE36ARL Tags
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