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Taiwan Semiconductor Corporation 1.5KE20A R0G
- Part No.:
- 1.5KE20A R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE20A R0G.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,547
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Product details
Overview
1.5KE20A R0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 20V, working stand-off voltage 17.1V, clamping voltage 27.7V at 56A peak pulse current, and junction temperature range −55°C to +175°C - used for automotive load-dump and inductive switching protection in power supply rails.
For engineers reviewing the 1.5KE20A R0G datasheet, 1.5KE20A R0G pinout, 1.5KE20A R0G application, or 1.5KE20A R0G equivalent, this page delivers verified electrical parameters, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance status, AEC-Q101 qualification evidence, thermal derating behavior, and real-world clamping performance under 10/1000μs surge conditions.
Technical Context
The 1.5KE20A R0G operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 19.0–21.0V breakdown range at 1mA test current. It clamps transients to ≤27.7V at 56A (10/1000μs), with dynamic impedance low enough to sustain 1500W peak pulse power without thermal runaway.
Its DO-201 package supports lead-free soldering per J-STD-002, meets UL 94V-0 flammability, and enables mounting on 16mm × 16mm copper pads for thermal management. The device exhibits <1μA leakage above 10V and a VBR temperature coefficient of 0.090%/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 19.0–21.0V - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 17.1V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPP = 56A | 27.7V - clamped voltage during 10/1000μs surge; determines protected circuit's maximum stress level |
| PPK | 1500W - peak pulse power handling capability under standardized surge waveform |
| IPP | 56A - maximum non-repetitive peak impulse current the device safely diverts |
| TJ Range | −55°C to +175°C - operational junction temperature window enabling under-hood automotive use |
| Leakage ID @ VWM | <1μA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
DO-201 axial-leaded package with cathode band marking; leads are pure tin plated and solderable per J-STD-002. Polarity is unidirectional: anode (unmarked end), cathode (banded end).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12V rail); conducts when line voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD-like fast edges) |
| Fast response time | <1.0ps rise-to-VBR - enables clamping before sensitive ICs experience overstress |
| Low dynamic impedance | Ensures stable clamping voltage across wide current range (1A–56A), minimizing voltage overshoot |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input Stage |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load-dump surges up to 120V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp transients before LDO/regulator. Use Value: Limits rail voltage to ≤27.7V during 56A surge, protecting downstream 3.3V/5V regulators and microcontrollers. |
Use Scenario: 24V DC input to PLC I/O module subjected to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at board edge, shunting energy to chassis ground. Use Value: Absorbs 1500W peak energy within 1ms, preventing latch-up or gate oxide damage in MOSFET drivers. |
| LED Driver Output Protection | Telecom DC Feeder Line |
Use Scenario: Constant-current LED string driver output subject to cable disconnect transients. IC Role / Device Role / Timing Role: TVS connected across output terminals to clamp reverse polarity and flyback spikes. Use Value: Clamps reverse voltage to ≤27.7V, avoiding LED junction breakdown and ensuring >100k-cycle surge endurance. |
Use Scenario: −48V telecom power feed line exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage protector upstream of DC-DC converter, rated for bidirectional surge immunity. Use Value: Withstands 10/1000μs surges up to 56A while maintaining <1μA leakage at −41.0V operating bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ20A | Same 20V VBR, but 400W PPK rating and SMA package (smaller footprint, lower thermal mass) | Lower surge capacity limits use to sub-20A transients; unsuitable for ISO 7637-2 Pulse 1 compliance | Select only for space-constrained consumer electronics where full 1500W rating is unnecessary |
| ON Semiconductor 1.5SMC20A | Identical 20V VBR, 1500W rating, DO-214AB package (surface-mount), 27.7V VC, but no AEC-Q101 documentation provided | Requires rework for through-hole PCBs; lacks automotive qualification evidence despite matching specs | Prefer for SMT production lines needing same electrical performance without AEC-Q101 requirement |
Compared with SMAJ20A and 1.5SMC20A, the 1.5KE20A R0G uniquely combines 1500W surge rating, DO-201 through-hole mechanical robustness, AEC-Q101 qualification, and ISO 7637-2 compliance - making it the only option validated for under-hood automotive power rail protection without layout or qualification compromise.
Availability
1.5KE20A R0G is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC power inputs, LED driver output stages, and telecom DC feeder protection requiring stable component supply across extended temperature and surge stress conditions.
Supply support for 1.5KE20A 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power management, protection, and signal conditioning devices.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust thermal performance in legacy through-hole packages.
FAQ
What is the breakdown voltage tolerance of the 1.5KE20A R0G?
The 1.5KE20A R0G has a guaranteed breakdown voltage range of 19.0V to 21.0V at 1mA test current, corresponding to ±5% tolerance around the nominal 20V rating. This tight VBR window ensures consistent clamping behavior across production lots and temperature extremes, critical for predictable protection in safety-critical automotive systems.
Is the 1.5KE20A R0G AEC-Q101 qualified?
Yes, the 1.5KE20A R0G is explicitly AEC-Q101 qualified per the manufacturer's documentation (Version O2104). Qualification includes stress testing for temperature cycling, high-temperature reverse bias, and electrostatic discharge - confirming suitability for automotive under-hood applications where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of the 1.5KE20A R0G during a surge event?
The 1.5KE20A R0G clamps to a maximum of 27.7V at 56A peak pulse current under the standard 10/1000μs waveform. This value is measured and guaranteed across temperature and lot variations, defining the upper voltage limit imposed on protected circuitry during worst-case surge events such as load dump or inductive switching.
Does the 1.5KE20A R0G meet ISO 7637-2 requirements?
Yes, the 1.5KE20A R0G meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (fast transient coupling) requirements. Its 1500W surge rating, low clamping voltage, and fast response enable compliance without external circuitry - a key enabler for automotive ECU and body control module designs.
What is the thermal derating behavior of the 1.5KE20A R0G above 25°C ambient?
The 1.5KE20A R0G follows a linear derating curve: peak pulse power drops from 1500W at 25°C to zero at 175°C junction temperature. At 75°C ambient, the device retains ~80% of rated power when mounted on a 16mm × 16mm copper pad. Derating data is confirmed in Figure 2 of the official datasheet (O2104).
1.5KE20A 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 56A
- 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
1.5KE20A R0G FAQ
1.How can I place an order for 1.5KE20A R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE20A 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 1.5KE20A R0G reliable?
The price and inventory of 1.5KE20A R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE20A R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE20A R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE20A R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE20A R0G?
1.5KE20A R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE20A 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 1.5KE20A R0G?
For technical support, including 1.5KE20A R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE20A R0G requirements.
6.How does Aetrix verify that 1.5KE20A R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE20A 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 1.5KE20A R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE20A R0G?
All 1.5KE20A R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE20A 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 1.5KE20A R0G part is unused and in its original packaging.
Return procedure for 1.5KE20A R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE20A R0G Tags
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