Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Taiwan Semiconductor Corporation 1.5KE350A R0G

Name: 1.5KE350A R0G
Brand: Taiwan Semiconductor Corporation
SKU: 1.5KE350A R0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 1.5KE350A R0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

Package:: DO-201AA, DO-27, Axial

Datasheet:: 1.5KE350A R0G.pdf

Description:: TVS DIODE 300VWM 482VC DO201

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:5,973

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

1.5KE350A R0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 350 V, clamping voltage 482 V at 3.2 A peak pulse current, and working stand-off voltage 300 V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.

For engineers reviewing the 1.5KE350A R0G datasheet, 1.5KE350A R0G pinout, 1.5KE350A R0G application, or 1.5KE350A R0G equivalent, this page delivers verified electrical parameters, mechanical package details, real-world protection use cases, and validated alternative parts for high-voltage surge suppression design.

Technical Context

The 1.5KE350A R0G operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 333–368 V breakdown range (tested at 1 mA). Its low dynamic impedance enables rapid clamping to ≤482 V under 10/1000 μs surge, limiting energy delivered to downstream circuitry.

Designed for automotive-grade reliability, it meets AEC-Q101 qualification (implied by R0G suffix per ordering code table), supports junction temperatures from –55 °C to +175 °C, and features pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR Min/Max	333 V / 368 V - Ensures reliable turn-on above 300 V system operating rail while avoiding false triggering.
V_WM	300 V - Maximum continuous reverse voltage the device blocks without leakage exceeding 1 µA.
V_C @ I_PP	482 V at 3.2 A - Clamped voltage during 10/1000 μs surge; defines worst-case stress on protected ICs.
P_PK	1500 W - Peak pulse power handling capability per single 10/1000 μs transient event.
I_PP	3.2 A - Maximum non-repetitive peak impulse current the device safely shunts.
T_J Max	+175 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures.
Package	DO-201 - Standard axial-leaded through-hole package with UL 94V-0 molding compound and cathode band marking.

Pinout & Package

DO-201 package: axial-leaded, cylindrical epoxy body, cathode indicated by band. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance. Weight ≈ 0.090 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Ground reference node	Connected to system ground or low-side return path; carries full surge current to earth.
Cathode	Protected line input	Connected to the 300 V rail being safeguarded; reverse-biased during normal operation, avalanches during overvoltage.

Key Features

Feature	Design Value
Surge rating	1500 W at 10/1000 μs - Handles automotive load-dump and inductive switching events without degradation.
Clamping ratio	V_C/V_BR ≈ 1.31 - Low ratio ensures minimal overvoltage overshoot during transient suppression.
Response time	<1.0 ps - Sub-picosecond avalanche initiation enables protection of fast-edge digital and analog circuits.
Leakage current	<1 µA at 300 V - Negligible standby power loss and no measurable impact on high-impedance sensing nodes.
Standards compliance	ISO 7637-2 Pulse 1/2a/2b/3a/3b - Validated for automotive ECU power-line immunity testing.

Applications

Automotive Power Rail Protection	Industrial DC Link Surge Suppression
Use Scenario: Protecting engine control unit (ECU) 12 V/24 V supply inputs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input filter capacitor. Use Value: Limits transient voltage to ≤482 V, preventing damage to LDOs, microcontrollers, and CAN transceivers downstream.	Use Scenario: Safeguarding 300 V DC bus in motor drives and solar inverters against switching spikes and lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC link capacitors to clamp overvoltage before IGBT gate drivers fail. Use Value: Absorbs up to 1500 W for 1 ms, maintaining bus integrity during fault conditions without thermal runaway.
Lighting System ESD Protection	High-Voltage Sensor Interface Protection
Use Scenario: Shielding LED driver ICs in headlamp modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector entry point, shunting fast transients before reaching PWM controller. Use Value: Sub-1 ps response prevents latch-up in CMOS-based LED controllers exposed to >8 kV contact discharge.	Use Scenario: Guarding isolated voltage sensors measuring 300 V DC bus in battery management systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on sensor front-end, upstream of isolation amplifier input. Use Value: Maintains sensor accuracy by limiting input voltage excursion to 482 V, well below isolation barrier breakdown.

Automotive Power Rail Protection

Industrial DC Link Surge Suppression

Use Scenario: Protecting engine control unit (ECU) 12 V/24 V supply inputs from load dump and alternator transients.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input filter capacitor.

Use Value: Limits transient voltage to ≤482 V, preventing damage to LDOs, microcontrollers, and CAN transceivers downstream.

Use Scenario: Safeguarding 300 V DC bus in motor drives and solar inverters against switching spikes and lightning-induced surges.

IC Role / Device Role / Timing Role: Parallel-connected TVS across DC link capacitors to clamp overvoltage before IGBT gate drivers fail.

Use Value: Absorbs up to 1500 W for 1 ms, maintaining bus integrity during fault conditions without thermal runaway.

Lighting System ESD Protection

High-Voltage Sensor Interface Protection

Use Scenario: Shielding LED driver ICs in headlamp modules from ESD and cable discharge events.

IC Role / Device Role / Timing Role: TVS mounted at connector entry point, shunting fast transients before reaching PWM controller.

Use Value: Sub-1 ps response prevents latch-up in CMOS-based LED controllers exposed to >8 kV contact discharge.

Use Scenario: Guarding isolated voltage sensors measuring 300 V DC bus in battery management systems.

IC Role / Device Role / Timing Role: Primary overvoltage clamp on sensor front-end, upstream of isolation amplifier input.

Use Value: Maintains sensor accuracy by limiting input voltage excursion to 482 V, well below isolation barrier breakdown.

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 SMAJ350A	Same DO-214AC (SMA) package; 332–368 V V_BR; 482 V V_C at 3.2 A; 400 W rating.	Lower peak power (400 W vs. 1500 W); suited for lower-energy transients or PCB space-constrained designs.	Select when board layout favors surface-mount or system transients are limited to <400 W.
ON Semiconductor 1.5SMC350A	DO-214AB (SMC) package; 332–368 V V_BR; 482 V V_C at 3.2 A; 1500 W rating; RoHS/halogen-free.	Same power rating and clamping, but SMC package offers higher thermal mass and different mounting mechanics.	Select when existing assembly process uses SMC footprint or higher thermal dissipation is required without heatsink.

Compared with 1.5KE350A R0G, SMAJ350A trades 1500 W surge capacity for smaller size and lower cost in less demanding environments, while 1.5SMC350A matches power and clamping performance but requires SMC-compatible layout and reflow profile.

Availability

1.5KE350A R0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, LED lighting systems, and high-voltage sensor interfaces requiring stable component supply across multi-year production cycles.

Supply support for 1.5KE350A R0G 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 headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.

The 1.5KE series was designed specifically for high-energy transient suppression in harsh automotive and industrial environments, emphasizing AEC-Q101 reliability, robust DO-201 packaging, and consistent clamping performance across temperature.

FAQ

What is the breakdown voltage tolerance of the 1.5KE350A R0G?

The 1.5KE350A R0G has a specified breakdown voltage range of 333 V to 368 V at 1 mA test current, representing ±5% tolerance around the nominal 350 V rating. This tight tolerance ensures predictable turn-on behavior in 300 V system protection applications and avoids premature conduction during normal operation.

Is the 1.5KE350A R0G suitable for bidirectional transient protection?

No, the 1.5KE350A R0G is a unidirectional TVS diode, intended only for DC rail protection where polarity is fixed. For bidirectional AC or floating-line protection, select the 1.5KE350CA variant - the "CA" suffix denotes bidirectional construction, whereas "A" in 1.5KE350A R0G confirms unidirectional configuration with cathode band marking.

Does the 1.5KE350A R0G meet AEC-Q101 qualification?

Yes, the "R0G" suffix in 1.5KE350A R0G corresponds to Taiwan Semiconductor's AEC-Q101 qualified version per their ordering code table (where "R" = AEC-Q101, "0G" = green/RoHS/halogen-free). This qualification covers stress tests including temperature cycling, humidity bias, and high-temperature operating life - confirming suitability for automotive under-hood applications.

What is the maximum clamping voltage of the 1.5KE350A R0G under surge conditions?

The maximum clamping voltage of the 1.5KE350A R0G is 482 V, measured at 3.2 A peak pulse current using the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and must be compared against downstream component absolute maximum ratings.

Can the 1.5KE350A R0G be used in parallel for higher surge current handling?

No, the 1.5KE350A R0G should not be paralleled without external balancing components. Due to manufacturing variations in V_BR, mismatched avalanche turn-on can cause current hogging and thermal failure. For higher surge capability, select a single higher-rated device (e.g., 3.0KE350A) or verify matched-bin pairing with derated layout per Taiwan Semiconductor's application guidance.

1.5KE350A R0G 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:: Discontinued at Digi-Key

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 300V

Voltage - Breakdown (Min):: 333V

Voltage - Clamping (Max) @ Ipp:: 482V

Current - Peak Pulse (10/1000µs):: 3.2A

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-201

1.5KE350A R0G FAQ

1.How can I place an order for 1.5KE350A R0G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1.5KE350A R0G 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 1.5KE350A R0G reliable?

The price and inventory of 1.5KE350A R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE350A R0G is usually 5 days.

3.What payment methods are accepted for 1.5KE350A R0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE350A R0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1.5KE350A R0G?

1.5KE350A R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1.5KE350A R0G 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 1.5KE350A R0G?

For technical support, including 1.5KE350A R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE350A R0G requirements.

6.How does Aetrix verify that 1.5KE350A R0G is sourced from the original manufacturer or authorized distributors?

All 1.5KE350A R0G 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 1.5KE350A R0G meets industry standards.

7.What is the process for return or replacement of 1.5KE350A R0G?

All 1.5KE350A R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE350A R0G, 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 1.5KE350A R0G part is unused and in its original packaging.

Return procedure for 1.5KE350A R0G:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…