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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Taiwan Semiconductor Corporation 1V5KE150A

Name: 1V5KE150A
Brand: Taiwan Semiconductor Corporation
SKU: 1V5KE150A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1V5KE150A

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

Package:: DO-201AD, Axial

Datasheet:: 1V5KE150A.pdf

Description:: TVS DIODE 128VWM 207VC DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:8,868

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Product details

Overview

1V5KE150A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 143V minimum breakdown voltage (V_BR), 128V reverse stand-off voltage (V_RWM), and 207A peak pulse current (I_PPM). It clamps transients to 207V at rated surge, protecting power rails and I/O lines in industrial motor drives and AC/DC front-end circuits.

For engineers reviewing the 1V5KE150A datasheet, 1V5KE150A pinout, 1V5KE150A application, or 1V5KE150A equivalent, key selection criteria include its 128V V_RWM, 207V clamping voltage (V_C) at 7.2A, DO-201 mechanical compatibility, and ≤1μA leakage above 10V - critical for low-power sensing and high-impedance bias networks.

Technical Context

The 1V5KE150A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds 143V (min) and fully clamping within nanoseconds. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, enabling consistent energy absorption across repeated 10/1000μs transients.

Designed for single-pulse surge immunity per IEC 61000-4-5 Level 4, it delivers 1500W peak pulse power at T_p = 1ms with thermal derating above 75°C ambient. Junction temperature range is –55°C to +175°C, supporting operation in harsh environments like automotive engine control modules and industrial PLC backplanes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RWM	128 V - maximum continuous reverse operating voltage before significant leakage begins
V_BR (min)	143 V @ 1 mA - guaranteed avalanche initiation threshold under standard test conditions
V_C @ I_PPM	207 V @ 7.2 A - clamping voltage during full-rated 1500W transient, defining worst-case rail overvoltage
I_R @ V_RWM	<1 μA - negligible leakage current at stand-off voltage, preserving signal integrity in high-Z circuits
P_PPM	1500 W - peak pulse power handling for 1ms 10/1000μs waveform, meeting IEC 61000-4-5 surge requirements
T_J max	+175 °C - maximum junction temperature, enabling use in high-ambient industrial enclosures
Package	DO-201 - axial-leaded through-hole package with 0.090g mass and UL 94V-0 molding compound

Pinout & Package

DO-201 package: axial-leaded, glass-passivated, cathode-banded end. Leads are pure tin-plated, solderable per J-STD-002, with polarity marked by cathode band for unidirectional operation.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal	Connected to lower-potential side of protected circuit; conducts during forward surges or bias conditions
Cathode	Avalanche clamping terminal	Connected to higher-potential rail; initiates clamping when reverse voltage exceeds V_BR

Key Features

Feature	Design Value
Glass passivated junction	Ensures stable V_BR tolerance and long-term reliability under thermal cycling and humidity stress
1500W peak pulse power (1ms)	Supports robust protection against lightning-induced surges and inductive switching spikes in AC mains interfaces
Low incremental surge resistance	Minimizes V_C overshoot during fast-rising transients, improving clamping precision
Fast response time (<1 ns)	Activates before sensitive downstream ICs experience overvoltage, preventing latch-up or gate oxide damage
RoHS & halogen-free compliance	Fulfills environmental requirements for industrial and consumer electronics sold in EU, China, and Japan markets

Applications

AC Motor Drive Input Protection	Industrial PLC Digital I/O Protection
Use Scenario: 3-phase rectifier input stage exposed to line-to-line surges and load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC bus and ground to clamp positive transients. Use Value: Limits voltage to ≤207V during 1500W surges, preventing overvoltage failure of bulk capacitors and bridge rectifiers.	Use Scenario: 24V digital input channel subjected to EFT bursts and field-wiring induced transients. IC Role / Device Role / Timing Role: Standoff protection device on input node, absorbing energy before signal conditioning circuitry. Use Value: Maintains <1μA leakage at 24V, avoiding false triggering while clamping 4kV EFT pulses to safe levels.
AC/DC Power Supply Primary-Side Clamp	Automotive Body Control Module (BCM) Power Rail
Use Scenario: Flyback transformer primary winding with MOSFET switch, subject to inductive kickback. IC Role / Device Role / Timing Role: Snubber-connected TVS absorbing turn-off voltage spikes across the switching FET. Use Value: Clamps spike to 207V with sub-ns response, reducing MOSFET V_DS stress and enabling use of lower-voltage-rated devices.	Use Scenario: 12V battery-supplied microcontroller power rail exposed to load dump per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional clamping device between V_BAT and ground to limit overvoltage during alternator regulation failure. Use Value: Handles 1500W peak power without degradation, sustaining operation up to +175°C junction temperature in under-hood environments.

AC Motor Drive Input Protection

Industrial PLC Digital I/O Protection

Use Scenario: 3-phase rectifier input stage exposed to line-to-line surges and load dump events.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC bus and ground to clamp positive transients.

Use Value: Limits voltage to ≤207V during 1500W surges, preventing overvoltage failure of bulk capacitors and bridge rectifiers.

Use Scenario: 24V digital input channel subjected to EFT bursts and field-wiring induced transients.

IC Role / Device Role / Timing Role: Standoff protection device on input node, absorbing energy before signal conditioning circuitry.

Use Value: Maintains <1μA leakage at 24V, avoiding false triggering while clamping 4kV EFT pulses to safe levels.

AC/DC Power Supply Primary-Side Clamp

Automotive Body Control Module (BCM) Power Rail

Use Scenario: Flyback transformer primary winding with MOSFET switch, subject to inductive kickback.

IC Role / Device Role / Timing Role: Snubber-connected TVS absorbing turn-off voltage spikes across the switching FET.

Use Value: Clamps spike to 207V with sub-ns response, reducing MOSFET V_DS stress and enabling use of lower-voltage-rated devices.

Use Scenario: 12V battery-supplied microcontroller power rail exposed to load dump per ISO 7637-2 Pulse 5a.

IC Role / Device Role / Timing Role: Unidirectional clamping device between V_BAT and ground to limit overvoltage during alternator regulation failure.

Use Value: Handles 1500W peak power without degradation, sustaining operation up to +175°C junction temperature in under-hood environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ130A	Lower P_PPM (600W), smaller SMB package, 130V V_RWM, 219V V_C @ 2.7A	Suitable for space-constrained PCBs but requires derating for >1kV surge events	Select when board area is limited and surge energy is ≤600W; verify thermal margin in enclosed enclosures
1N6299A	Same manufacturer, identical electrical specs and DO-201 package; JEDEC part number for 1V5KE150A	No functional difference; used interchangeably in legacy designs and BOMs referencing JEDEC nomenclature	Drop-in replacement with identical form, fit, and function; preferred for cross-referencing legacy schematics

Compared with SMBJ130A and 1N6299A, the 1V5KE150A offers higher surge rating (1500W vs. 600W) and proven thermal robustness in through-hole mounting, while 1N6299A provides exact JEDEC-equivalent sourcing without performance trade-offs.

Availability

1V5KE150A is available at Aetrix Electronics and suitable for industrial motor drives, PLC I/O modules, and AC/DC power supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant surge protection.

Supply support for 1V5KE150A 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, rectifiers, and MOSFETs, with global distribution and AEC-Q200 qualified product lines.

The 1V5KE series was designed specifically for high-energy transient suppression in industrial and automotive power systems, emphasizing rugged DO-201 packaging, tight V_BR tolerances, and reliable operation across extended temperature ranges.

FAQ

What is the clamping voltage of the 1V5KE150A under full-rated surge current?

The 1V5KE150A clamps to 207 V when subjected to its rated peak pulse current of 7.2 A (corresponding to 1500 W at 1 ms). This value is measured per standard 10/1000 μs waveform and defines the maximum voltage seen by downstream components during worst-case surge events. The 1V5KE150A maintains this clamping performance across its specified junction temperature range.

Is the 1V5KE150A unidirectional or bidirectional?

The 1V5KE150A is a unidirectional TVS diode, intended for DC or single-polarity surge protection. Its cathode band marks the terminal that connects to the higher-potential rail. For bidirectional applications, the variant 1V5KE150CA must be used - the "C" suffix denotes symmetrical bipolar operation. The 1V5KE150A datasheet explicitly lists only unidirectional parameters.

What is the maximum reverse leakage current for the 1V5KE150A at its rated V_RWM?

At its reverse stand-off voltage of 128 V and ambient temperature of 25°C, the 1V5KE150A exhibits ≤1 μA reverse leakage current. This low leakage preserves signal integrity in high-impedance monitoring circuits and avoids unnecessary power loss in always-on systems. The 1V5KE150A maintains this specification across its full operating temperature range.

Can the 1V5KE150A be used in surface-mount designs?

No - the 1V5KE150A is packaged exclusively in the axial-leaded DO-201 through-hole format and is not available in SMD variants. For surface-mount equivalents, consider the SMAJ150A or SMCJ150A families. The 1V5KE150A requires plated-through holes and wave or hand soldering; its mechanical design does not support reflow or pick-and-place assembly.

What is the junction temperature rating of the 1V5KE150A?

The 1V5KE150A has a maximum junction temperature (T_J) of +175°C and a minimum of –55°C, enabling deployment in high-ambient environments such as industrial motor control cabinets or automotive under-hood locations. Derating curves confirm usable power dissipation down to zero watts at +175°C ambient, provided lead length and PCB copper area meet JEDEC 201 Class 2 whisker-test requirements.

1V5KE150A Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Package/Case:: DO-201AD, Axial

Series:: -

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):: 7.2A

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-201AD

1V5KE150A FAQ

1.How can I place an order for 1V5KE150A through Aetrix?

Please submit a Request for Quotation (RFQ) for 1V5KE150A 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 1V5KE150A reliable?

The price and inventory of 1V5KE150A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE150A is usually 5 days.

3.What payment methods are accepted for 1V5KE150A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE150A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1V5KE150A?

1V5KE150A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1V5KE150A 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 1V5KE150A?

For technical support, including 1V5KE150A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE150A requirements.

6.How does Aetrix verify that 1V5KE150A is sourced from the original manufacturer or authorized distributors?

All 1V5KE150A 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 1V5KE150A meets industry standards.

7.What is the process for return or replacement of 1V5KE150A?

All 1V5KE150A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE150A, 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 1V5KE150A part is unused and in its original packaging.

Return procedure for 1V5KE150A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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