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STMicroelectronics 1.5KE180ARL
- Part No.:
- 1.5KE180ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE180ARL.pdf
- Description:
- TVS DIODE 154VWM 317VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:8,305
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Product details
Overview
1.5KE180ARL from STMicroelectronics is a unidirectional Transil™ transient voltage suppression (TVS) diode in DO-201 package, rated for 1500 W peak pulse power (10/1000 µs), 180 V breakdown voltage (VBR = 171–189 V @ IR = 1 mA), and clamping voltage of 246 V @ 6.1 A peak pulse current. It protects MOSFETs and low-voltage ICs in DC power rails and industrial control inputs.
For engineers reviewing the 1.5KE180ARL datasheet, 1.5KE180ARL pinout, 1.5KE180ARL application, or 1.5KE180ARL equivalent, key selection criteria include clamping ratio (VCL/VBR ≈ 1.37), junction-to-lead thermal resistance (20 °C/W), and UL 497B certification for surge protection in telecom and power supply interfaces.
Technical Context
This TVS diode operates as a voltage-clamping overvoltage protector with fast response time (<1 ns), leveraging avalanche breakdown to limit transient energy before it reaches downstream circuitry. Its unidirectional polarity enables integration into DC-biased lines without reverse conduction during normal operation.
The device features a low clamping factor (VCL/VBR ≤ 1.4), stable breakdown voltage temperature coefficient (αT = 10.8 × 10−4/°C), and 725 pF capacitance at 0 V (1 MHz), making it suitable for medium-speed signal line protection where ESD and lightning-induced surges coexist with functional bandwidth constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform): sustains single high-energy transients common in AC/DC power input stages. |
| Breakdown Voltage (VBR) | 171–189 V @ 1 mA: ensures reliable triggering above nominal 180 V rail while avoiding false trips during tolerance drift. |
| Clamping Voltage (VCL) | 246 V @ 6.1 A: limits voltage seen by protected ICs to safe margin below absolute maximum ratings. |
| Junction-to-Lead Thermal Resistance | 20 °C/W: enables effective heat dissipation through PCB copper traces without external heatsink in pulsed duty. |
| Leakage Current (IR) | 1 µA @ 144 V: negligible standby power loss and minimal impact on high-impedance sensing circuits. |
| Capacitance (CJ) | 725 pF @ 0 V, 1 MHz: compatible with <10 Mbps digital lines but not RF or high-speed USB applications. |
| UL Recognition | UL 497B File QVGQ2.E136224: certified for use in primary circuit surge protection per telecom and industrial safety standards. |
Pinout & Package
DO-201 axial-leaded package with cathode band marking; leads are tinned and lead-free compliant per ECOPACK® specifications. Dimensions: length 25.4 mm (max), body diameter 5.3 mm (max), lead diameter 1.06 mm (max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; defines forward bias direction for unidirectional clamping. |
| Cathode | High-side surge input terminal | Connected to protected line; avalanche conduction occurs from cathode to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Ratio | VCL/VBR ≈ 1.37 ensures minimal overvoltage overshoot relative to breakdown threshold. |
| Fast Response Time | <1 ns enables protection against ESD and nanosecond-scale transients before IC latch-up occurs. |
| Robust Surge Rating | Withstands 200 A non-repetitive forward surge (10 ms), supporting high-current fault clearing in power systems. |
| Thermal Stability | 175 °C max junction temperature and 20 °C/W Rth(j-l) allow reliable operation under repeated surge stress on standard FR4 PCBs. |
Applications
| Industrial Power Input Protection | DC Motor Drive Control Inputs |
|---|---|
|
Use Scenario: 24–48 V DC power entry point in PLC modules exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontroller power rails. Use Value: Limits transient voltage to ≤246 V, preventing damage to 3.3 V/5 V logic and gate drivers rated for 30 V absolute max. |
Use Scenario: Digital enable/control signal lines feeding H-bridge gate drivers in servo motor controllers. IC Role / Device Role / Timing Role: Signal-line TVS suppressing coupling from adjacent high-dV/dt power switches. Use Value: 725 pF capacitance avoids signal edge degradation on 100 kHz PWM command lines while clamping spikes to safe levels. |
| Telecom Line Interface Protection | Renewable Energy Charge Controller Inputs |
|
Use Scenario: RS-485 data lines connected to outdoor equipment subject to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level protection coordinated with GDTs or polymer PTCs in multi-stage architecture. Use Value: UL 497B recognition validates compliance with telecom surge immunity requirements (IEC 61000-4-5 Level 3). |
Use Scenario: PV array voltage monitoring inputs in solar charge controllers operating up to 150 V nominal. IC Role / Device Role / Timing Role: Overvoltage clamp on analog front-end inputs measuring panel open-circuit voltage. Use Value: 180 V VBR provides 20% headroom above 150 V system max, ensuring no conduction during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Same VBR range (171–189 V), lower PPP = 600 W, SMC package (surface-mount). | Not suitable for high-energy 1500 W transients; requires PCB layout space reduction and reflow compatibility. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 2. |
| 1.5KE180A | Identical electrical specs and DO-201 package, but supplied in ammopack (not tape-and-reel). | No functional difference; differs only in packaging format and reel quantity (1900 pcs vs. 600 pcs). | Choose 1.5KE180ARL for automated SMT assembly; choose 1.5KE180A for manual or low-volume prototyping. |
Compared with SMBJ180A, 1.5KE180ARL delivers 2.5× higher surge energy handling in through-hole form, while 1.5KE180A offers identical performance with different logistics packaging-making RLL optimal for volume production with pick-and-place integration.
Availability
1.5KE180ARL is available at Aetrix Electronics and suitable for industrial power input protection, DC motor drive control, telecom line interface, and renewable energy charge controller applications requiring stable component supply and UL-recognized surge robustness.
Supply support for 1.5KE180ARL 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 analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The 1.5KE Transil™ series targets high-energy transient suppression in harsh environments, emphasizing reliability, UL certification, and broad voltage coverage from 6.8 V to 440 V for universal adoption across power and signal protection tiers.
FAQ
What is the maximum clamping voltage of 1.5KE180ARL under standard test conditions?
The clamping voltage is 246 V measured at 6.1 A peak pulse current using the 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and represents the upper voltage limit imposed on protected circuitry during surge events.
Is 1.5KE180ARL RoHS and lead-free compliant?
Yes, 1.5KE180ARL uses an ECOPACK®-compliant lead-free package meeting RoHS Directive 2011/65/EU. The epoxy molding compound satisfies UL94 V0 flammability rating, and lead finish is 100% matte tin.
Can 1.5KE180ARL be used in bidirectional signal lines?
No-it is unidirectional and must be oriented with cathode toward the protected line. For bidirectional protection (e.g., RS-485), use the 1.5KE180CA variant, which has symmetrical breakdown in both polarities and identical clamping performance.
What is the recommended PCB layout for optimal thermal performance?
Use ≥10 mm long, 1.5 mm wide copper traces connected to each lead, with thermal relief minimized. Mounting on FR4 with 35 µm copper thickness achieves the specified 20 °C/W junction-to-lead resistance; avoid excessive solder mask coverage on leads.
1.5KE180ARL 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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 317V
- Current - Peak Pulse (10/1000µs):
- 31.5A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 725pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE180ARL FAQ
1.How can I place an order for 1.5KE180ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE180ARL 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 1.5KE180ARL reliable?
The price and inventory of 1.5KE180ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE180ARL is usually 5 days.
3.What payment methods are accepted for 1.5KE180ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE180ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE180ARL?
1.5KE180ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE180ARL 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 1.5KE180ARL?
For technical support, including 1.5KE180ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE180ARL requirements.
6.How does Aetrix verify that 1.5KE180ARL is sourced from the original manufacturer or authorized distributors?
All 1.5KE180ARL 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 1.5KE180ARL meets industry standards.
7.What is the process for return or replacement of 1.5KE180ARL?
All 1.5KE180ARL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE180ARL, 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 1.5KE180ARL part is unused and in its original packaging.
Return procedure for 1.5KE180ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE180ARL Tags
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