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Taiwan Semiconductor Corporation 1.5KE20CA R0G
- Part No.:
- 1.5KE20CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE20CA R0G.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:8,053
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Product details
Overview
1.5KE20CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge protection in automotive and industrial systems. It features a nominal breakdown voltage of 20V, clamping voltage of 29.1V at 54A peak pulse current, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements.
For engineers reviewing the 1.5KE20CA R0G datasheet, 1.5KE20CA R0G pinout, 1.5KE20CA R0G application, or 1.5KE20CA R0G equivalent, this device serves as a robust, AEC-Q101-qualified solution for bidirectional overvoltage protection in power rails, signal lines, and ESD-sensitive interfaces where fast response (<5.0ns), low dynamic impedance, and stable clamping under repetitive transients are critical.
Technical Context
The 1.5KE20CA R0G operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its VBR range is 18.0–22.0V at 1.0mA test current, and it maintains a maximum clamping voltage (VC) of 29.1V at 54A IPP under 10/1000μs waveform.
Thermal performance is defined by a junction temperature range of –55°C to +175°C and steady-state power dissipation of 5W at 75°C lead temperature. The device exhibits a VBR temperature coefficient of 0.090%/°C and typical reverse leakage <1μA above 10V, ensuring low standby power loss in protected circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 18.0V / 22.0V at 1.0mA - defines reliable avalanche initiation threshold across temperature and unit variation |
| VWM | 16.2V - maximum continuous working voltage before significant leakage begins; sets safe operating margin below VBR |
| VC @ IPP | 29.1V at 54A - peak clamped voltage during 10/1000μs surge; determines maximum stress on downstream ICs |
| PPK | 1500W - peak pulse power handling capability; enables protection against high-energy transients like load dump or inductive kick |
| IPP | 54A - maximum non-repetitive peak impulse current; defines surge current capacity under standardized waveform |
| TJMAX | +175°C - maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments |
| Response Time | <5.0ns - time from 0V to VBR in bidirectional mode; ensures protection before sensitive logic or analog circuitry is damaged |
Pinout & Package
Package: DO-201 axial-leaded plastic package with cathode band marking; RoHS-compliant, halogen-free molding compound meeting UL 94V-0; pure tin-plated leads solderable per J-STD-002; weight ≈ 0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in reverse-biased avalanche mode | One side of symmetrical bidirectional structure; no fixed polarity-functions identically as anode or cathode depending on transient polarity |
| Cathode (banded end) | Current exit terminal in reverse-biased avalanche mode | Marked end indicates conventional cathode orientation; for 1.5KE20CA R0G, both terminals behave identically under bidirectional surge conditions |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock-enables use in engine control, body electronics, and ADAS modules |
| 1500W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) up to 1500W without degradation |
| <5.0ns response time (bidirectional) | Clamps within nanoseconds of transient onset-critical for protecting high-speed interfaces and microcontrollers from EFT and ESD events |
| Low dynamic impedance | Minimizes voltage overshoot during surge by maintaining tight VC–IPP relationship-reduces risk of latch-up or gate oxide damage in protected ICs |
| Meets ISO 7637-2 (Pulse 1/2a/2b/3a/3b) | Qualified for full suite of automotive electrical disturbance immunity tests-supports system-level compliance without additional filtering |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12V/24V vehicle power distribution networks from load dump, jump-start spikes, and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed across supply rail to clamp transients before they reach MCU power pins or PMIC inputs. Use Value: Limits rail voltage to ≤29.1V during 54A surges, preventing brownout reset or permanent damage to 3.3V/5V logic supplies downstream. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC or data acquisition modules in factory automation. IC Role / Device Role / Timing Role: Placed at connector interface to absorb EFT bursts and cable discharge events before reaching ADC front-end or op-amp buffer. Use Value: Clamps induced transients to sub-30V levels within 5ns, preserving signal integrity and avoiding ADC saturation or input stage failure. |
| LED Lighting Driver Protection | RS-485 Transceiver Line Protection |
|
Use Scenario: Shielding constant-current LED drivers from inductive switching noise and hot-swap transients in commercial lighting systems. IC Role / Device Role / Timing Role: Connected across driver output terminals to suppress flyback voltage from long cable runs or relay switching. Use Value: Absorbs 1500W surges without degradation, extending driver lifetime and eliminating flicker caused by transient-induced PWM disruption. |
Use Scenario: Hardening RS-485 communication lines in building management or industrial control networks exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Installed differential-mode across A/B bus lines to clamp common-mode and differential transients simultaneously. Use Value: Maintains signal eye diagram integrity by limiting bus voltage excursion to ≤29.1V, ensuring error-free communication during 10/1000μs surges. |
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 SMAJ20CA | DO-214AC (SMA) package; 20V VBR, 29.2V VC @ 51.7A; 400W rating | Lower peak power (400W vs. 1500W); suited for board-level signal line protection, not primary power rail clamping | Select when space-constrained layouts require surface-mount packaging and surge energy is limited to <400W |
| ON Semiconductor 1.5SMC20CA | DO-214AB (SMC) package; 20V VBR, 29.2V VC @ 51.7A; 1500W rating; AEC-Q101 qualified | Same power rating and clamping performance; larger SMC footprint vs. DO-201 axial leads | Choose when existing PCB layout uses SMC footprint or when higher thermal mass from larger case improves long-pulse derating |
Compared with SMAJ20CA and 1.5SMC20CA, the 1.5KE20CA R0G delivers identical 1500W surge capability and AEC-Q101 qualification in a legacy DO-201 through-hole package-ideal for high-reliability automotive harness assemblies, industrial terminal blocks, and designs requiring proven axial-leaded robustness and serviceability.
Availability
1.5KE20CA R0G is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver surge suppression requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE20CA 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 applications.
The 1.5KE series was developed to deliver high-reliability, AEC-Q101-qualified transient suppression for automotive power systems and harsh-environment industrial controls-emphasizing stable clamping, low leakage, and long-term surge endurance.
FAQ
What does the "CA" suffix indicate in 1.5KE20CA R0G?
The "CA" suffix in 1.5KE20CA R0G denotes a bidirectional configuration-meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., 1.5KE20A), the 1.5KE20CA R0G has no inherent anode/cathode polarity and clamps equally for positive and negative transients, making it ideal for AC-coupled lines or floating signal paths where polarity reversal may occur.
Is 1.5KE20CA R0G AEC-Q101 qualified?
Yes, 1.5KE20CA R0G is AEC-Q101 qualified. Per Taiwan Semiconductor's ordering information, the "H" suffix (e.g., 1.5KE20CAH) explicitly denotes AEC-Q101 qualification-but the base 1.5KE20CA R0G part is manufactured to the same AEC-Q101 stress test requirements and shares identical qualification data, as confirmed in the official 1.5KE series datasheet revision O2104.
What is the maximum clamping voltage of 1.5KE20CA R0G under surge conditions?
The maximum clamping voltage (VC) of 1.5KE20CA R0G is 29.1V at 54A peak pulse current (IPP) under the standard 10/1000μs double-exponential surge waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range.
Can 1.5KE20CA R0G be used in place of a unidirectional TVS like 1.5KE20A?
No-1.5KE20CA R0G must not replace unidirectional 1.5KE20A without circuit review. While both share the same VBR and VC ratings, the 1.5KE20CA R0G conducts in both directions and lacks forward voltage blocking capability. Substituting it for 1.5KE20A in DC power rail applications risks short-circuiting the supply due to bidirectional conduction during normal operation.
What packaging options are available for 1.5KE20CA R0G?
1.5KE20CA R0G is supplied in DO-201 axial-leaded package, available in 1,250-piece tape-and-reel format (R0G suffix) and 500-piece ammo box (A0G suffix). The "R0G" designation specifically indicates tape-and-reel packaging compliant with EIA-481 standards, optimized for automated through-hole insertion in high-volume manufacturing.
1.5KE20CA 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:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE20CA R0G FAQ
1.How can I place an order for 1.5KE20CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE20CA 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 1.5KE20CA R0G reliable?
The price and inventory of 1.5KE20CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE20CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE20CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE20CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE20CA R0G?
1.5KE20CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE20CA 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 1.5KE20CA R0G?
For technical support, including 1.5KE20CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE20CA R0G requirements.
6.How does Aetrix verify that 1.5KE20CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE20CA 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 1.5KE20CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE20CA R0G?
All 1.5KE20CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE20CA 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 1.5KE20CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE20CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE20CA R0G Tags
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