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Taiwan Semiconductor Corporation 1.5KE150A
- Part No.:
- 1.5KE150A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150A.pdf
- Description:
- TVS 1500W 150.5V 5% UNIDIR DO-20
- Quantity:
- Payment:
- Shipping:
Inventory:2,013
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Product details
Overview
1.5KE150A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 150V, clamping voltage of 207V at 7.6A peak pulse current, and DO-201 package. It delivers AEC-Q101 qualification, low dynamic impedance, and sub-1ps response time for automotive and industrial surge protection.
For engineers reviewing the 1.5KE150A datasheet, 1.5KE150A pinout, 1.5KE150A application, or 1.5KE150A equivalent, key selection criteria include working stand-off voltage (128V), maximum clamping voltage (207V), junction temperature range (–55°C to +175°C), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance for automotive EFT immunity.
Technical Context
The 1.5KE150A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 143–158V breakdown range at 1mA test current. Its clamping action limits transients to ≤207V under 10/1000μs waveform, enabling robust protection of downstream ICs without forward conduction during normal operation.
It features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and meets JESD 201 Class 2 whisker resistance. With 1500W peak power rating and thermal derating above 25°C, it supports high-energy surge suppression in constrained PCB layouts using standard DO-201 mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 143–158V - Ensures reliable turn-on before system damage threshold; validated per ANSI/IEEE C62.35 |
| VWM | 128V - Maximum continuous reverse operating voltage; defines safe DC bias margin before leakage rise |
| VC @ IPP = 7.6A | 207V - Clamped voltage during 10/1000μs surge; determines protected circuit's maximum stress level |
| PPK | 1500W - Peak pulse power handling; enables single-event suppression of high-energy transients (e.g., load dump) |
| IPP | 7.6A - Peak impulse current capacity; defines minimum surge current survivability per standardized waveform |
| TJ Range | –55°C to +175°C - Extended junction temperature capability supports under-hood automotive and industrial environments |
| Response Time | <1.0ps - Avalanche initiation speed ensures protection before sensitive logic or analog circuitry responds |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking; 0.090g mass; UL 94V-0 flammability rated epoxy body; pure tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-impedance return path; carries surge current during clamping |
| Cathode | Reverse-biased input terminal | Connected to protected line (e.g., 12V rail); initiates avalanche breakdown when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) waveforms |
| Low dynamic impedance | Enables tighter clamping window (VC – VBR = 49V) versus competing 1500W TVS devices |
| RoHS & halogen-free | Meets IEC 61249-2-21; supports environmentally regulated automotive and industrial supply chains |
| Sub-1ps response | Ensures protection activation prior to propagation delay of typical microcontroller I/O or CAN transceivers |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO/regulator input. Use Value: Clamps 1500W transients to ≤207V, preventing overvoltage damage to 3.3V/5V domain regulators and MCU power pins. |
Use Scenario: 24V analog sensor signal line (e.g., pressure transducer) in factory automation PLC I/O module. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt EFT and cable discharge events. Use Value: Sub-1ps response and 207V clamping preserve signal integrity and prevent latch-up in precision ADC front-ends. |
| LED Driver Overvoltage Protection | Telecom Line Card Surge Suppression |
Use Scenario: Constant-current LED driver input in outdoor signage subjected to lightning-induced surges on AC mains feed. IC Role / Device Role / Timing Role: Primary surge clamp on DC bus input stage upstream of switching controller. Use Value: 1500W rating handles repetitive 10/1000μs surges without degradation; 175°C TJ supports sealed enclosure thermal profiles. |
Use Scenario: DC power feed (–48V) to telecom line card in central office equipment. IC Role / Device Role / Timing Role: Unidirectional TVS on power input rail to protect PMIC and interface ICs. Use Value: Meets GR-1089-CORE Level 3 surge requirements; 128V VWM provides 20% margin above nominal –48V × 2.5 derating. |
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 SMAJ150A | Same DO-214AC (SMA) package; 1500W rating; VBR = 143–158V; VC = 243V @ 6.2A - higher clamping voltage than 1.5KE150A's 207V | Higher VC reduces margin for 3.3V/5V logic protection; better suited for 24V+ systems where 243V clamping remains within safe limits | Select SMAJ150A only if board layout uses surface-mount SMA footprint and clamping voltage margin permits 243V stress |
| ON Semiconductor 1.5SMC150A | DO-214AB (SMC) package; identical VBR/VC specs (143–158V / 207V); 1500W rating; RoHS/halogen-free | SMC package offers higher thermal mass than DO-201 but requires larger PCB area; same electrical performance in surge suppression | Choose 1.5SMC150A when thermal dissipation demands larger case size or existing design uses SMC footprint |
Compared with SMAJ150A and 1.5SMC150A, the 1.5KE150A provides the lowest clamping voltage (207V) in an axial DO-201 package, delivering superior voltage margin for legacy through-hole designs and space-constrained automotive modules where leaded mounting is preferred.
Availability
1.5KE150A is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial sensor interface hardening, and LED driver overvoltage suppression requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE150A 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 automotive and industrial certifications.
The 1.5KE series was designed specifically for high-reliability transient suppression in automotive power networks and industrial control systems, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and extended temperature operation.
FAQ
What is the breakdown voltage tolerance of the 1.5KE150A?
The 1.5KE150A has a specified breakdown voltage range of 143V to 158V at 1mA test current, representing ±5.3% tolerance around the nominal 150V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable system-level surge margin calculations in designs using the 1.5KE150A.
Is the 1.5KE150A suitable for bidirectional transient protection?
No - the 1.5KE150A is a unidirectional TVS diode, intended for DC circuits with defined polarity such as automotive 12V/24V rails or industrial power supplies. For bidirectional protection (e.g., AC lines or data buses), use the bipolar 1.5KE150CA variant, which provides symmetrical clamping in both directions and is explicitly designated with a "C" or "CA" suffix.
Does the 1.5KE150A meet automotive qualification standards?
Yes - the 1.5KE150A is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge per JEDEC standards. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements, making it suitable for under-hood and chassis-mounted automotive electronics where the 1.5KE150A is deployed.
What is the maximum clamping voltage of the 1.5KE150A under surge conditions?
The 1.5KE150A has a maximum clamping voltage (VC) of 207V at 7.6A peak pulse current under the standardized 10/1000μs waveform. This value is guaranteed across temperature and lifetime, and defines the upper voltage limit imposed on protected circuitry during worst-case surge events where the 1.5KE150A is active.
How does the 1.5KE150A compare to the 1.5KE150 in terms of electrical performance?
The 1.5KE150A offers tighter parameter tolerances than the base 1.5KE150: VBR is 143–158V (vs. 135–165V), VWM is 128V (vs. 121V), and VC is 207V (vs. 215V). These improvements provide enhanced voltage margin and more predictable clamping behavior, making the 1.5KE150A the preferred choice for designs requiring higher precision in surge protection using the 1.5KE150A.
1.5KE150A 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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.6A
- 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
1.5KE150A FAQ
1.How can I place an order for 1.5KE150A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150A 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 1.5KE150A reliable?
The price and inventory of 1.5KE150A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE150A is usually 5 days.
3.What payment methods are accepted for 1.5KE150A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150A?
1.5KE150A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150A 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 1.5KE150A?
For technical support, including 1.5KE150A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150A requirements.
6.How does Aetrix verify that 1.5KE150A is sourced from the original manufacturer or authorized distributors?
All 1.5KE150A 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 1.5KE150A meets industry standards.
7.What is the process for return or replacement of 1.5KE150A?
All 1.5KE150A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150A, 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 1.5KE150A part is unused and in its original packaging.
Return procedure for 1.5KE150A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150A Tags
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