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STMicroelectronics 1.5KE82ARL
- Part No.:
- 1.5KE82ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE82ARL.pdf
- Description:
- TVS DIODE 70.1VWM 146VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,540
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Product details
Overview
1.5KE82ARL from STMicroelectronics is a unidirectional Transil™ transient voltage suppression (TVS) diode in DO-201 package, designed for high-energy surge protection of DC power rails and signal lines. It features 82 V breakdown voltage (VBR = 77.9–86.1 V), 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤113 V at 13.3 A peak pulse current - deployed in industrial power supplies and automotive ECUs.
For engineers reviewing the 1.5KE82ARL datasheet, 1.5KE82ARL pinout, 1.5KE82ARL application, or 1.5KE82ARL equivalent, key selection criteria include clamping voltage vs. operating voltage margin, unidirectional polarity requirement, DO-201 mechanical fit, 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 its breakdown threshold (VBR ≥77.9 V), it avalanches into low-impedance conduction within <1 ns, diverting surge current away from protected ICs. Its 1500 W rating applies to standardized 10/1000 µs waveform per IEC 61000-4-5.
Thermal design relies on junction-to-leads thermal resistance (Rth(j-l) = 20 °C/W) and maximum junction temperature (Tj = 175 °C). Leakage current remains ≤1 µA at 66.4 V (VRM = 0.81 × VBR min), ensuring minimal standby power loss in 48 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform) - sustains single high-energy surges without failure |
| Breakdown Voltage (VBR) | 77.9–86.1 V @ 1 mA - defines minimum overvoltage threshold before clamping activation |
| Clamping Voltage (VCL) | 113 V @ 13.3 A (10/1000 µs) - maximum voltage seen by protected circuit during surge |
| Standoff Voltage (VRM) | 66.4 V - maximum continuous reverse voltage without significant leakage (IR ≤1 µA) |
| Junction Temperature Range | -65 to +175 °C - supports operation in under-hood automotive and industrial environments |
| Package | DO-201 axial lead - compatible with through-hole PCB assembly and manual rework |
| UL Certification | UL 497B File QVGQ2.E136224 - validated for primary-side surge protection in telecom/data line interfaces |
Pinout & Package
DO-201 package: axial-leaded, epoxy-encapsulated cylindrical body (8.5–9.5 mm length × 4.8–5.3 mm diameter), RoHS-compliant and UL94 V0 rated. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; carries full surge current during clamping |
| Cathode (banded end) | Reverse-biased protection node | Connected to protected line (e.g., 48 V rail); avalanche conduction begins here at VBR |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping factor (VCL/VBR) | 1.45 - minimizes overvoltage stress on downstream MOSFETs and LDOs |
| Fast response time | <1 ns - reacts before most ICs experience latch-up or gate oxide damage |
| High surge current capability | 13.3 A (10/1000 µs) - handles repeated lightning-induced transients in outdoor equipment |
| Stable voltage temperature coefficient | αT = 10.5 × 10−4 /°C - predictable VBR drift across −40 to +125 °C ambient |
| Low dynamic impedance | ~8.4 Ω (calculated from ΔV/ΔI between 1 A and 13.3 A) - ensures consistent clamping under varying surge amplitudes |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 48 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching noise. IC Role / Device Role: Primary overvoltage clamp on main DC bus, placed upstream of buck converter and EMI filter. Use Value: Limits transient voltage to ≤113 V, preventing damage to 100 V-rated input capacitors and MOSFETs while maintaining UL 497B compliance. |
Use Scenario: CAN-FD data line protection in vehicle BCM where 12 V battery transients (ISO 7637-2 Pulse 5a) threaten transceiver ICs. IC Role / Device Role: Unidirectional TVS on CAN_H line, referenced to chassis ground with low capacitance (1350 pF). Use Value: Clamps 100 V/100 ms pulses to <113 V within nanoseconds, preserving signal integrity and meeting ISO 10605 ESD immunity requirements. |
| Telecom DSL Line Interface | Renewable Energy Inverter DC Link |
Use Scenario: Protection of ADSL line driver ICs against induced surges from nearby AC mains or lightning coupling on twisted-pair copper lines. IC Role / Device Role: Series-connected unidirectional TVS on tip/ring lines, coordinated with gas discharge tube (GDT) front-end. Use Value: Provides secondary clamping after GDT arc-over, limiting residual voltage to safe levels for 5 V analog front-end components. |
Use Scenario: DC link surge suppression in solar microinverter where PV array transients (IEC 61000-4-5 Level 4) stress IGBT gate drivers. IC Role / Device Role: Parallel-mounted TVS across 400 V DC bus, absorbing energy from rapid voltage spikes caused by string disconnection events. Use Value: Absorbs up to 1500 W for 1 ms without degradation, protecting 600 V-rated IGBTs and enabling Class II insulation system compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85A (Diodes Inc.) | DO-214AA package, 85 V VBR, 600 W rating, 113 V VCL @ 5.3 A | Lower power handling; surface-mount only; better suited for space-constrained PCBs | Select when board area is limited and surge energy is ≤600 W; requires re-layout for SMD footprint |
| P6KE82A (ON Semiconductor) | DO-201 package, identical 82 V VBR range, but 600 W rating and 125 V VCL @ 4.8 A | Lower peak power and higher clamping voltage reduce protection margin in high-energy scenarios | Acceptable for cost-sensitive designs with lower surge severity (IEC 61000-4-4 Level 3), not recommended for IEC 61000-4-5 Level 4 |
Compared with SMBJ85A and P6KE82A, the 1.5KE82ARL delivers 2.5× higher surge energy absorption and tighter clamping ratio - critical for protecting 100 V-class power semiconductors in industrial and automotive DC systems where physical layout constraints allow axial-leaded devices.
Availability
1.5KE82ARL is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom line interfaces, and renewable energy inverters requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE82ARL 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, specializing in power management, automotive ICs, and protection devices with vertical manufacturing capabilities.
The Transil™ TVS family targets robust overvoltage protection for DC power rails and communication lines, emphasizing high surge resilience, precise clamping, and regulatory compliance for industrial and transportation markets.
FAQ
What is the maximum continuous reverse voltage (VRM) for 1.5KE82ARL?
The maximum continuous reverse standoff voltage is 66.4 V, derived from 0.81 × VBR(min) = 0.81 × 77.9 V. At this voltage, leakage current remains ≤1 µA, making it suitable for 48 V nominal systems with 20% tolerance and transient headroom.
Can 1.5KE82ARL be used in bidirectional configurations?
No - the "A" suffix denotes unidirectional construction. For bidirectional protection, ST offers the 1.5KE82CA variant, which uses a back-to-back diode configuration and has symmetric clamping in both polarities, but higher capacitance (675 pF vs. 1350 pF for unidirectional at 1 MHz).
How does thermal resistance affect derating of peak pulse power?
Junction-to-leads thermal resistance is 20 °C/W. At ambient temperatures above 25 °C, peak pulse power must be reduced per Figure 3 in the datasheet: at 75 °C ambient, maximum dissipation drops to 5 W on infinite heatsink, though short-duration surges remain at full 1500 W due to thermal inertia.
Is 1.5KE82ARL compliant with automotive AEC-Q200?
No - it is not AEC-Q200 qualified. While its junction temperature range (−65 to +175 °C) exceeds automotive requirements, ST does not list it in their AEC-Q200 stress-tested portfolio. For automotive applications, use ST's Automotive-grade Transil™ series such as SMAJ85A-Q or 1.5SMC85A-Q.
1.5KE82ARL 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):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 69A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1350pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE82ARL FAQ
1.How can I place an order for 1.5KE82ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE82ARL 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 1.5KE82ARL reliable?
The price and inventory of 1.5KE82ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE82ARL is usually 5 days.
3.What payment methods are accepted for 1.5KE82ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE82ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE82ARL?
1.5KE82ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE82ARL 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 1.5KE82ARL?
For technical support, including 1.5KE82ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE82ARL requirements.
6.How does Aetrix verify that 1.5KE82ARL is sourced from the original manufacturer or authorized distributors?
All 1.5KE82ARL 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 1.5KE82ARL meets industry standards.
7.What is the process for return or replacement of 1.5KE82ARL?
All 1.5KE82ARL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE82ARL, 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 1.5KE82ARL part is unused and in its original packaging.
Return procedure for 1.5KE82ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE82ARL Tags
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