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STMicroelectronics 1.5KE36ARL
- Part No.:
- 1.5KE36ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36ARL.pdf
- Description:
- TVS DIODE 30.8VWM 64.3VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,480
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Product details
Overview
1.5KE36ARL from STMicroelectronics is a unidirectional Transil™ transient voltage suppression (TVS) diode in DO-201 package, designed for high-energy surge clamping in DC power rails and signal lines. It features 36 V standoff voltage (VRM), 49.9 V clamping voltage at 30 A peak pulse current (10/1000 µs), 1500 W peak pulse power, and <1 ns response time - protecting MOSFETs, microcontrollers, and I/O interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the 1.5KE36ARL datasheet, 1.5KE36ARL pinout, 1.5KE36ARL application, or 1.5KE36ARL equivalent, key selection criteria include clamping ratio (VCL/VBR = 1.46), low leakage (<1 µA @ 29.2 V), junction-to-lead thermal resistance (20 °C/W), and UL 497B certification for telecom surge protection compliance.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device: when reverse voltage exceeds 34.2 V (min breakdown), it avalanches into low-impedance conduction within nanoseconds, diverting surge current away from protected circuitry. Its silicon avalanche structure ensures repeatable clamping performance across >1000 surges at rated conditions.
Thermal design relies on its 20 °C/W junction-to-leads resistance and 175 °C max junction temperature; derating begins above 75 °C ambient due to 5 W steady-state dissipation limit. Capacitance is 2500 pF at 0 V (1 MHz), making it unsuitable for high-speed data lines but effective for <10 MHz analog/power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform): sustains single lightning-induced surges per IEC 61000-4-5 Level 4 without failure |
| Standoff Voltage (VRM) | 29.2 V: maximum continuous reverse voltage before leakage exceeds 1 µA; sets operating margin below 36 V nominal |
| Breakdown Voltage (VBR) | 34.2–37.8 V @ 1 mA: guaranteed avalanche onset range defining minimum clamping threshold |
| Clamping Voltage (VCL) | 49.9 V @ 30 A (10/1000 µs): peak voltage seen by protected IC during worst-case surge; clamping ratio = 1.46 |
| Leakage Current (IRM) | <1 µA @ 29.2 V: negligible standby power loss in battery-powered systems |
| Junction Temp Limit | 175 °C: enables operation in under-hood automotive or industrial enclosures with localized heating |
| Package Thermal Rth(j-l) | 20 °C/W: allows direct PCB copper pour heatsinking to manage 5 W steady-state dissipation at 75 °C ambient |
Pinout & Package
DO-201 axial leaded package: cathode marked with band; leads are non-polarized for mechanical mounting but electrically asymmetric (anode/cathode). Requires ≥5 mm lead length for 230 °C soldering tolerance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Surge return path | Connected to ground or low-impedance reference; carries full IPP during clamping |
| Cathode (banded end) | Protected line connection | Connected to rail being protected (e.g., +36 V supply); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping factor | VCL/VBR = 1.46 ensures minimal overvoltage stress on 3.3 V/5 V logic powered from regulated 36 V rails |
| UL 497B certified | QVGQ2.E136224 listing validates suitability for primary-side telecom surge protection per GR-1089-CORE |
| Lead-free & RoHS | ECOPACK® compliant package meets IPC/JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) |
| High surge robustness | Withstands ≥1000 repetitive 30 A (10/1000 µs) surges without parameter shift beyond spec limits |
Applications
| Industrial PLC I/O Protection | DC Power Supply Input Stage |
|---|---|
Use Scenario: 24 V DC input to programmable logic controller subjected to inductive switching transients and EFT bursts. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +24 V rail and chassis ground to clamp positive-going surges before they reach upstream DC-DC converter. Use Value: Limits voltage excursion to ≤49.9 V, preventing damage to 36 V-rated input capacitors and enabling use of lower-cost 50 V electrolytics. |
Use Scenario: Front-end protection of 48 V telecom rectifier feeding distributed power architecture. IC Role / Device Role / Timing Role: Standoff-rated TVS on output side of input filter, clamping lightning-induced surges coupled through AC mains or battery backup lines. Use Value: 1500 W rating handles 10/1000 µs surges up to 30 A, meeting IEC 61000-4-5 Level 4 immunity requirements. |
| Automotive Body Control Module | Motor Drive Gate Driver Protection |
Use Scenario: 12 V battery-supplied BCM exposed to load dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary clamping device on main VBAT rail, placed upstream of LDO regulators and CAN transceivers. Use Value: 175 °C junction rating supports under-hood placement; 49.9 V clamping prevents latch-up in 5 V logic powered via buck converters. |
Use Scenario: Protection of high-side N-channel MOSFET gate driver ICs against Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: TVS connected between gate and source terminals to clamp dv/dt-induced overshoot exceeding gate oxide rating. Use Value: Sub-1 ns response captures fast-rising spikes; 2500 pF capacitance does not degrade typical 10–100 ns gate drive timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | DO-214AA package; 600 W rating; 58.1 V clamping @ 10.3 A | Lower power handling suits space-constrained consumer electronics, not industrial 1500 W surges | Select when board area is critical and surge energy is ≤600 W (IEC 61000-4-5 Level 2) |
| 1N6277A | Same DO-201 package; identical 36 V VBR; 50.4 V clamping @ 30 A (slightly higher VCL) | Legacy ON Semiconductor part with broader temp range (-65 to +175 °C) but no UL 497B listing | Choose for cost-sensitive designs where UL certification is not mandated and clamping ratio tolerance is acceptable |
Compared with 1.5KE36ARL, SMBJ36A trades surge capacity for footprint reduction, while 1N6277A offers equivalent ruggedness without UL validation - making the ST part optimal for certified telecom/industrial front-ends requiring guaranteed 1500 W clamping.
Availability
1.5KE36ARL is available at Aetrix Electronics and suitable for industrial PLCs, telecom rectifiers, automotive body control modules, and motor drive gate protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE36ARL 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, specializing in power management, analog, MEMS, and microcontrollers with manufacturing in Europe and Asia.
This device belongs to the Transil™ TVS diode family, engineered specifically for high-reliability overvoltage protection in harsh environments including industrial automation, telecom infrastructure, and automotive subsystems.
FAQ
What is the maximum allowable surge current for 1.5KE36ARL?
The absolute maximum peak pulse current is 30 A for a 10/1000 µs waveform, verified per IEC 61000-4-5 test conditions. Exceeding this value risks short-circuit failure, as stated in Table 1 footnote 1. Derating is required for repetitive surges or elevated ambient temperatures above 25 °C.
Does 1.5KE36ARL meet UL 497B requirements?
Yes - UL file number QVGQ2.E136224 is explicitly listed in the datasheet's Features section and confirmed in Revision 4 (March 2012). This certification covers use in telecommunications primary protector applications, including AC/DC power entry points subject to lightning-induced surges.
How does temperature affect the breakdown voltage?
Breakdown voltage shifts with junction temperature at αT = 9.9 × 10⁻⁴ /°C (0.099 %/°C), per Table 3 note 2. At 100 °C junction temperature, VBR increases by approximately 7.5 % over its 25 °C value (34.2–37.8 V), resulting in 36.8–40.5 V range - critical for thermal-aware clamping margin design.
Can 1.5KE36ARL be used in bidirectional configurations?
No - the "A" suffix denotes unidirectional construction. For bidirectional protection, ST offers the 1.5KE36CA variant (same package, symmetrical clamping for AC lines). Using 1.5KE36ARL in AC applications would allow forward conduction during negative half-cycles, causing catastrophic failure.
1.5KE36ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE, TRANSIL™
- 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:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 156A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 2500pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE36ARL FAQ
1.How can I place an order for 1.5KE36ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36ARL 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 1.5KE36ARL reliable?
The price and inventory of 1.5KE36ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36ARL is usually 5 days.
3.What payment methods are accepted for 1.5KE36ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36ARL?
1.5KE36ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36ARL 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 1.5KE36ARL?
For technical support, including 1.5KE36ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36ARL requirements.
6.How does Aetrix verify that 1.5KE36ARL is sourced from the original manufacturer or authorized distributors?
All 1.5KE36ARL 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 1.5KE36ARL meets industry standards.
7.What is the process for return or replacement of 1.5KE36ARL?
All 1.5KE36ARL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36ARL, 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 1.5KE36ARL part is unused and in its original packaging.
Return procedure for 1.5KE36ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36ARL Tags
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