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Taiwan Semiconductor Corporation 1.5KE180A
- Part No.:
- 1.5KE180A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE180A.pdf
- Description:
- TVS 1500W 180V 5% UNIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:5,150
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Product details
Overview
1.5KE180A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 180V, clamping voltage of 246V at 6.4A peak pulse current, and DO-201 package. It delivers fast response (<1.0ps), low dynamic impedance, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and EFT immunity in power rail protection.
For engineers reviewing the 1.5KE180A datasheet, 1.5KE180A pinout, 1.5KE180A application, or 1.5KE180A equivalent, this part is selected for high-energy surge suppression in DC power supplies, automotive electronics, and industrial control systems where precise stand-off voltage (154V VWM) and robust clamping performance are critical.
Technical Context
The 1.5KE180A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 171–189V breakdown range (VBR @ 1mA). It clamps transients to ≤246V at 6.4A (10/1000μs waveform), limiting energy dissipation while maintaining <1μA leakage above 10V.
Its DO-201 package supports 5W steady-state power dissipation at 75°C lead temperature and handles 200A non-repetitive forward surge (8.3ms half-sine), making it suitable for inductive switching protection in 24V–48V systems without external heat sinking under defined mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 154 V - Maximum continuous reverse operating voltage before conduction begins; sets safe margin below system nominal voltage. |
| VBR min/max | 171 V / 189 V @ 1 mA - Confirmed breakdown threshold range ensures reliable triggering across process variation and temperature. |
| VC @ IPP | 246 V @ 6.4 A - Clamping voltage during 10/1000μs surge defines maximum stress imposed on downstream circuitry. |
| PPK | 1500 W - Peak pulse power rating determines survivability against standardized lightning or load-dump transients. |
| Junction temp | −55°C to +175°C - Wide operating temperature range enables use in under-hood automotive and industrial environments. |
| Leakage ID | <1 μA @ 154 V - Ultra-low blocking leakage minimizes standby power loss and avoids false triggering in high-impedance circuits. |
Pinout & Package
Package: DO-201 axial-leaded plastic case with cathode band marking; RoHS-compliant, halogen-free, UL 94V-0 rated molding compound; 0.090g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration. |
| Cathode | Avalanche clamping terminal | Marked end; connected to protected line (e.g., 24V rail); conducts when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Surge rating | 1500W peak power per 10/1000μs waveform - withstands automotive load dump (ISO 7637-2 Pulse 5a) without failure. |
| Clamping ratio | VC/VBR ≈ 1.37 - Low ratio ensures minimal overvoltage exposure to protected ICs during surge events. |
| Response time | <1.0 ps - Enables suppression of nanosecond-scale ESD and fast transients before sensitive components react. |
| AEC-Q101 qualified | Available in H-grade variant - Validated for automotive under-hood reliability including temperature cycling and humidity testing. |
| Low leakage | <1 μA @ VWM - Prevents signal distortion and battery drain in always-on 12V/24V systems. |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input Stage |
|---|---|
Use Scenario: Protecting engine control unit (ECU) 24V supply from ISO 7637-2 Pulse 5a load dump transients up to 120V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24V rail and chassis ground to clamp surges within 1ns. Use Value: Limits peak voltage to 246V, preventing damage to 36V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding programmable logic controller (PLC) 48V input against inductive switching spikes from solenoid drivers. IC Role / Device Role / Timing Role: Standoff protector on main DC bus; activated only during >171V transients. Use Value: Absorbs 1500W surge energy without degradation, enabling maintenance-free operation over 100,000 cycles. |
| LED Driver Overvoltage Clamp | Telecom DC Feeder Line Protection |
Use Scenario: Securing constant-current LED driver ICs against accidental 120VAC coupling or capacitor discharge events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on driver input; operates in avalanche mode only during fault. Use Value: Maintains 154V working voltage margin while clamping to 246V, preserving driver FET gate integrity. |
Use Scenario: Front-end protection for PoE-powered network switches exposed to induced surges on 48V DC feeder lines. IC Role / Device Role / Timing Role: First-line transient suppressor before DC-DC isolation stage. Use Value: Meets IEC 61000-4-5 Level 3 (1kV/2kA) requirements with verified clamping performance at 6.4A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ180A | DO-214AC (SMA) package; 1500W rating; VBR = 171–189V; VC = 260V @ 5.8A | Surface-mount footprint; lower thermal resistance with PCB copper pour; not axial-leaded | Select for automated SMT assembly or space-constrained layouts where through-hole DO-201 is impractical. |
| ON Semiconductor 1.5SMC180A | DO-214AB (SMC) package; 1500W rating; VBR = 171–189V; VC = 259V @ 5.8A | Higher power density than DO-201; requires different mounting and thermal management strategy | Choose when higher board-level power density and IPC Class 3 reliability are required in industrial designs. |
Compared with 1.5KE180A, SMAJ180A offers SMT compatibility but slightly higher clamping voltage, while 1.5SMC180A provides superior thermal performance in compact form - both require layout revision and are not drop-in replacements for DO-201 through-hole mounting.
Availability
1.5KE180A is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and LED lighting systems requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE180A 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global distribution and AEC-Q101 qualification capability.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial DC power systems, emphasizing ruggedness, repeatable clamping, and compliance with ISO 7637-2 and IEC 61000-4-5 standards.
FAQ
What is the breakdown voltage tolerance of the 1.5KE180A?
The 1.5KE180A has a specified breakdown voltage range of 171 V to 189 V at 1 mA test current, representing ±5% tolerance around the nominal 180 V rating. This tight VBR window ensures consistent turn-on behavior across production lots and temperature extremes, critical for predictable clamping in safety-critical 24V and 48V systems.
Is the 1.5KE180A suitable for bidirectional transient protection?
No, the 1.5KE180A is a unidirectional TVS diode intended for DC line-to-ground protection only. Its cathode-band marking and electrical specifications apply exclusively to reverse-biased operation. For bidirectional protection, select the 1.5KE180CA variant, which features symmetrical breakdown in both polarities and is explicitly rated for AC or floating-line applications.
What is the maximum clamping voltage of the 1.5KE180A under standard test conditions?
The 1.5KE180A clamps to a maximum of 246 V when subjected to a 10/1000 μs surge waveform at 6.4 A peak current (IPP). This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events, ensuring compatibility with 300V-rated downstream components.
Does the 1.5KE180A meet automotive qualification standards?
The base 1.5KE180A is not AEC-Q101 qualified; however, the 1.5KE180AH variant (with "H" suffix) is fully AEC-Q101 certified for automotive applications. It undergoes extended reliability testing including temperature cycling, humidity bias, and mechanical shock - confirming suitability for under-hood and chassis-mounted modules where long-term field reliability is mandatory.
How does the 1.5KE180A compare to the 1.5KE180 in terms of electrical performance?
The 1.5KE180A differs from the 1.5KE180 by tighter VBR tolerance (171–189 V vs. 162–198 V) and lower clamping voltage (246 V vs. 258 V at rated IPP). These improvements reduce overvoltage stress on protected circuits and improve design margin, especially in high-reliability applications where parameter consistency directly impacts system-level surge immunity.
1.5KE180A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE180A FAQ
1.How can I place an order for 1.5KE180A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE180A 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 1.5KE180A reliable?
The price and inventory of 1.5KE180A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE180A is usually 5 days.
3.What payment methods are accepted for 1.5KE180A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE180A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE180A?
1.5KE180A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE180A 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 1.5KE180A?
For technical support, including 1.5KE180A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE180A requirements.
6.How does Aetrix verify that 1.5KE180A is sourced from the original manufacturer or authorized distributors?
All 1.5KE180A 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 1.5KE180A meets industry standards.
7.What is the process for return or replacement of 1.5KE180A?
All 1.5KE180A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE180A, 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 1.5KE180A part is unused and in its original packaging.
Return procedure for 1.5KE180A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE180A Tags
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