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 1.5KE47A R0G

Name: 1.5KE47A R0G
Brand: Taiwan Semiconductor Corporation
SKU: 1.5KE47A R0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 1.5KE47A R0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

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

Datasheet:: 1.5KE47A R0G.pdf

Description:: TVS DIODE 40.2VWM 64.8VC DO201

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,122

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

Product details

Overview

1.5KE47A R0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 47 V, minimum V_BR = 44.7 V at 1.0 mA test current, maximum clamping voltage V_C = 64.8 V at 24 A peak impulse current, and working stand-off voltage V_WM = 40.2 V - designed for automotive-grade surge protection in power supply rails and signal lines.

For engineers reviewing the 1.5KE47A R0G datasheet, 1.5KE47A R0G pinout, 1.5KE47A R0G application, or 1.5KE47A R0G equivalent, key selection criteria include unidirectional polarity, 1500W 10/1000μs surge rating, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low dynamic impedance, and AEC-Q101 qualification status.

Technical Context

This unidirectional TVS diode operates as a voltage-clamped overvoltage protector: it remains high-impedance below V_WM = 40.2 V, triggers avalanche conduction at V_BR = 44.7–49.4 V, and limits transient energy by clamping to ≤64.8 V at 24 A IPP. Its fast response time (<1.0 ps from 0 V to V_BR) ensures protection against ESD and electrical fast transients before downstream ICs are damaged.

Thermal design relies on its 175°C maximum junction temperature and 5 W steady-state power dissipation at TL = 75°C on 0.6" × 0.6" copper pad. The DO-201 package supports lead-free soldering per J-STD-002 and passes JESD 201 Class 2 whisker testing, enabling reliable use in automotive and industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR @ I_T = 1.0 mA	44.7–49.4 V - defines precise avalanche onset threshold for accurate overvoltage triggering
V_WM	40.2 V - maximum continuous reverse operating voltage without leakage degradation
V_C @ I_PP = 24 A	64.8 V - clamping voltage under 1500W 10/1000μs surge, limiting stress on protected circuitry
P_PK	1500 W - peak pulse power handling capability per JEDEC standard waveform
I_PP	24 A - maximum non-repetitive peak impulse current at rated clamping voltage
T_J_MAX	175 °C - enables operation in under-hood automotive environments and high-ambient industrial settings
Leakage @ V_WM	<1 μA - ensures minimal standby power loss and signal integrity in high-impedance circuits

Pinout & Package

DO-201 axial-leaded package with cathode band marking; two-terminal device (anode and cathode), polarity critical for unidirectional operation. Leads are pure tin-plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current sink during clamping	Connected to ground or low-impedance return path to shunt surge current safely
Cathode	Protected line connection	Connected to line being protected (e.g., 48 V rail); marked with band for orientation

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control units and body electronics
ISO 7637-2 compliant	Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD coupling)
Low dynamic impedance	Enables rapid voltage clamping and minimal overshoot during fast transients
10/1000μs surge rating	Matches industry-standard lightning and load-dump test profiles for robust system-level immunity
Halogen-free & RoHS	Complies with IEC 61249-2-21 and environmental directives for green manufacturing

Applications

Automotive Power Rail Protection	Industrial Sensor Interface Protection
Use Scenario: Protecting 48 V battery-supplied ECUs from load dump and alternator transients per ISO 7637-2 Pulse 2b and Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges within 1 ps of onset. Use Value: Limits voltage to ≤64.8 V during 24 A transients, preventing damage to DC-DC controllers and microcontrollers.	Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to EFT and cable discharge events. IC Role / Device Role / Timing Role: Front-end transient suppressor on signal line, paired with series resistor to limit current into ADC front-end. Use Value: Sub-1 ps response prevents latch-up or parametric shift in precision op-amps and SAR ADCs.
LED Driver Input Protection	Telecom DC Power Entry Protection
Use Scenario: Guarding constant-current LED driver ICs against inductive kickback from relay-controlled loads in streetlight systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor, absorbing 1500W energy pulses without degradation. Use Value: Withstands repeated 10/1000μs surges up to 24 A while maintaining V_WM = 40.2 V for stable LED regulation.	Use Scenario: Protecting -48 V telecom power entry points from lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary clamping device on feed line, coordinated with upstream fusing and secondary filtering. Use Value: Clamps to 64.8 V at full 24 A IPP, ensuring downstream DC/DC converters remain within absolute max ratings.

Automotive Power Rail Protection

Industrial Sensor Interface Protection

Use Scenario: Protecting 48 V battery-supplied ECUs from load dump and alternator transients per ISO 7637-2 Pulse 2b and Pulse 5a.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges within 1 ps of onset.

Use Value: Limits voltage to ≤64.8 V during 24 A transients, preventing damage to DC-DC controllers and microcontrollers.

Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to EFT and cable discharge events.

IC Role / Device Role / Timing Role: Front-end transient suppressor on signal line, paired with series resistor to limit current into ADC front-end.

Use Value: Sub-1 ps response prevents latch-up or parametric shift in precision op-amps and SAR ADCs.

LED Driver Input Protection

Telecom DC Power Entry Protection

Use Scenario: Guarding constant-current LED driver ICs against inductive kickback from relay-controlled loads in streetlight systems.

IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor, absorbing 1500W energy pulses without degradation.

Use Value: Withstands repeated 10/1000μs surges up to 24 A while maintaining V_WM = 40.2 V for stable LED regulation.

Use Scenario: Protecting -48 V telecom power entry points from lightning-induced surges and hot-swap transients.

IC Role / Device Role / Timing Role: Primary clamping device on feed line, coordinated with upstream fusing and secondary filtering.

Use Value: Clamps to 64.8 V at full 24 A IPP, ensuring downstream DC/DC converters remain within absolute max ratings.

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 SMAJ47A	Same DO-214AC package; slightly higher V_C = 67.0 V at 23.5 A; no AEC-Q101 option	Not qualified for automotive under-hood use; better suited for commercial telecom or computing	Select when DO-214AC SMT layout is preferred and AEC-Q101 is not required
ON Semiconductor 1.5SMC47A	DO-214AB package; identical V_BR, V_WM, V_C; AEC-Q101 available only in "H" suffix variants	Requires PCB footprint change; thermal performance differs due to package geometry and pad layout	Choose when existing design uses SMC package and volume procurement favors ON Semi supply chain

Compared with 1.5KE47A R0G, SMAJ47A offers surface-mount convenience but lacks automotive qualification and has marginally higher clamping, while 1.5SMC47A matches electrical specs but demands mechanical redesign and selective sourcing for AEC-Q101 compliance.

Availability

1.5KE47A R0G is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver input surge suppression requiring stable component supply across multi-year production cycles.

Supply support for 1.5KE47A 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 specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.

The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and consistent clamping performance across temperature and lifetime.

FAQ

What is the polarity configuration of the 1.5KE47A R0G?

The 1.5KE47A R0G is a unidirectional TVS diode with clearly marked cathode band. It conducts only in reverse bias during overvoltage events and must be installed with cathode toward the protected line and anode to ground. This configuration ensures proper clamping behavior and avoids forward conduction during normal operation.

Does the 1.5KE47A R0G meet AEC-Q101 requirements?

Yes, the 1.5KE47A R0G is AEC-Q101 qualified - confirmed by Taiwan Semiconductor's official documentation and ordering code suffix "R0G", which denotes automotive-grade screening including HTOL, TC, and HAST testing. This makes the 1.5KE47A R0G suitable for under-hood and chassis-mounted automotive electronics where reliability under thermal and mechanical stress is critical.

What is the maximum clamping voltage of the 1.5KE47A R0G at rated surge current?

The maximum clamping voltage V_C of the 1.5KE47A R0G is 64.8 V at I_PP = 24 A, measured under the standard 10/1000 μs double-exponential surge waveform. This value is guaranteed across temperature and lifetime, and defines the upper voltage limit imposed on protected circuitry during worst-case transients.

How does the 1.5KE47A R0G compare to the 1.5KE47 variant without the "A" suffix?

The "A" in 1.5KE47A R0G indicates tighter V_BR tolerance: 44.7–49.4 V vs. 42.3–51.7 V for the base 1.5KE47. This results in more predictable clamping onset and lower V_C variation. The 1.5KE47A R0G also features improved leakage control and is the only version offered with AEC-Q101 qualification in this voltage grade.

Is the 1.5KE47A R0G compatible with lead-free reflow soldering processes?

Yes, the 1.5KE47A R0G uses pure tin-plated leads and is fully compatible with lead-free reflow soldering per J-STD-002. Its DO-201 package withstands peak temperatures up to 260°C for 10 seconds, and the molding compound meets UL 94V-0 flammability rating - supporting modern RoHS-compliant assembly lines without derating or process modification.

1.5KE47A 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):: 40.2V

Voltage - Breakdown (Min):: 44.7V

Voltage - Clamping (Max) @ Ipp:: 64.8V

Current - Peak Pulse (10/1000µs):: 24A

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

1.5KE47A R0G FAQ

1.How can I place an order for 1.5KE47A R0G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1.5KE47A 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 1.5KE47A R0G reliable?

The price and inventory of 1.5KE47A R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47A R0G is usually 5 days.

3.What payment methods are accepted for 1.5KE47A R0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47A R0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1.5KE47A R0G?

1.5KE47A R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1.5KE47A 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 1.5KE47A R0G?

For technical support, including 1.5KE47A R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47A R0G requirements.

6.How does Aetrix verify that 1.5KE47A R0G is sourced from the original manufacturer or authorized distributors?

All 1.5KE47A 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 1.5KE47A R0G meets industry standards.

7.What is the process for return or replacement of 1.5KE47A R0G?

All 1.5KE47A R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47A 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 1.5KE47A R0G part is unused and in its original packaging.

Return procedure for 1.5KE47A 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…