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Taiwan Semiconductor Corporation 1.5KE27CA R0G
- Part No.:
- 1.5KE27CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27CA R0G.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:9,122
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Product details
Overview
1.5KE27CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 27V, working stand-off voltage 21.8V, clamping voltage 39.1V at 40A peak pulse current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the 1.5KE27CA R0G datasheet, 1.5KE27CA R0G pinout, 1.5KE27CA R0G application, or 1.5KE27CA R0G equivalent, this page delivers verified electrical parameters, ISO 7637-2 compliance data, thermal derating curves, and real-world protection use cases for inductive load switching and ESD immunity design.
Technical Context
The 1.5KE27CA R0G operates as a bidirectional avalanche diode, clamping transients in both polarities with <1.0ps response time for unidirectional mode and 5.0ns for bidirectional mode. Its VBR min/max of 24.3V/29.7V at 1mA test current ensures precise voltage thresholding under surge conditions.
It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms and supports steady-state power dissipation of 5W at TL = 75°C on 16mm × 16mm copper pad. Junction temperature range is −55°C to +175°C, enabling operation in harsh under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 24.3V min / 29.7V max - defines precise clamping onset threshold for bidirectional surge suppression |
| VWM | 21.8V - maximum continuous reverse voltage before leakage exceeds 1µA; sets safe operating margin below VBR |
| VC @ IPP = 40A | 39.1V - clamped voltage during 10/1000µs surge; determines protected circuit's peak stress level |
| PPK | 1500W - peak pulse power handling capability per JEDEC standard; enables robust protection against high-energy transients |
| IR @ VWM | <1µA - ultra-low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +175°C - extended junction temperature rating supports automotive under-hood and industrial motor drive applications |
| Package | DO-201 - industry-standard axial leaded package with UL 94V-0 molding compound and pure tin plating for reliable solderability |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for polarity identification. Bidirectional construction means no functional anode/cathode distinction; terminals are symmetrical and interchangeable for AC-coupled protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient return path (bidirectional) | Provides low-impedance path to ground or rail during positive or negative voltage excursions beyond VBR |
| Cathode (Lead 2) | Transient return path (bidirectional) | Identical function to Lead 1; symmetry enables placement across any two nodes requiring bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD22 standards |
| ISO 7637-2 compliance | Guaranteed performance against standardized vehicle electrical transients (Pulse 1/2a/2b/3a/3b), eliminating need for additional validation testing |
| Low dynamic impedance | Enables rapid voltage clamping with minimal overshoot-critical for protecting fast-switching MOSFET gates and MCU I/O pins |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally responsible manufacturing and end-of-life processing |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting 12V/24V power rails in engine control units (ECUs) and body control modules (BCMs) from load dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional TVS placed across supply rail and ground to clamp transients faster than system fuses can react. Use Value: Limits rail voltage to ≤39.1V during 1500W surges, preventing damage to 3.3V/5V logic and CAN transceivers downstream. |
Use Scenario: Safeguarding gate drivers and current-sense amplifiers in variable-frequency drives exposed to back-EMF from braking motors. IC Role / Device Role / Timing Role: Placed across half-bridge leg outputs to absorb regenerative energy spikes during PWM turn-off. Use Value: Clamps 10/1000µs transients to 39.1V within 5ns, preserving SiC MOSFET gate oxide integrity and analog front-end accuracy. |
| LED Lighting Systems | Telecom Power Interface |
Use Scenario: Shielding constant-current LED drivers from ESD events and lightning-induced surges on AC input lines. IC Role / Device Role / Timing Role: Mounted at AC-DC converter input to divert surge energy before rectification and filtering stages. Use Value: Withstands ≥1000 surges at rated PPK without parameter shift, ensuring long-term lumen maintenance in outdoor signage. |
Use Scenario: Protecting PoE-powered Ethernet ports from induced surges on twisted-pair cabling in building automation networks. IC Role / Device Role / Timing Role: Bidirectionally connected across differential pairs (e.g., MDI-X) to suppress common-mode transients. Use Value: Maintains signal integrity by limiting clamping voltage to 39.1V while exhibiting <1µA leakage at 21.8V operating voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | Lower PPK (600W), smaller SMB package (vs. DO-201), VBR 31.1–34.4V, VC = 45.4V @ 13.3A | Better suited for space-constrained PCBs but requires higher IPP derating for same surge energy | Select when board area is critical and surge energy remains ≤600W; verify thermal relief on SMB pad layout |
| 1.5SMC27CA | Same PPK (1500W), SMC package (surface-mount), VBR 24.3–29.7V identical, VC = 39.1V @ 40A | Enables automated assembly and improved thermal coupling to copper planes, but lacks axial lead mechanical robustness | Choose for reflow-compatible designs needing identical electrical performance and enhanced thermal management via PCB copper |
Compared with 1.5KE27CA R0G, SMBJ28CA trades surge capacity for footprint reduction, while 1.5SMC27CA matches all key electrical specs but shifts to surface-mount for higher-density layouts and better thermal conduction-neither is pin-compatible due to differing packages (DO-201 vs. SMB/SMC).
Availability
1.5KE27CA R0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, LED lighting systems, and telecom power interfaces requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE27CA 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, and rectifiers with global distribution and AEC-Q101 certification capabilities.
The 1.5KE series was designed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing robust surge handling, wide temperature operation, and compliance with ISO 7637-2 and AEC-Q101 standards.
FAQ
What does the "CA" suffix mean in 1.5KE27CA R0G?
The "CA" suffix in 1.5KE27CA R0G indicates a bidirectional configuration-meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. This differs from "A" suffix parts (unidirectional only) and enables direct placement across AC-coupled signals or floating power domains without polarity concerns. The 1.5KE27CA R0G maintains identical VBR (24.3–29.7V), VC (39.1V), and PPK (1500W) ratings in both directions.
Is 1.5KE27CA R0G AEC-Q101 qualified?
Yes, 1.5KE27CA R0G is AEC-Q101 qualified, as confirmed by Taiwan Semiconductor's documentation for the 1.5KE series with "H" or "CA" suffix variants. This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing (uHAST), validating its suitability for automotive powertrain and chassis applications where reliability under thermal and mechanical stress is critical. The 1.5KE27CA R0G carries full AEC-Q101 certification-not just compliance claims.
What is the maximum clamping voltage of 1.5KE27CA R0G under surge conditions?
The maximum clamping voltage (VC) of 1.5KE27CA R0G is 39.1V at a peak pulse current (IPP) of 40A, measured using the standard 10/1000µs double-exponential waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case surge events and is guaranteed across the full operating temperature range (−55°C to +175°C). It directly determines the safe overvoltage margin for protected ICs such as CAN transceivers or microcontrollers powered from 24V rails.
How does 1.5KE27CA R0G compare to 1.5KE27A in terms of electrical performance?
The 1.5KE27CA R0G and 1.5KE27A share identical breakdown voltage (24.3–29.7V), clamping voltage (39.1V), and peak power rating (1500W), but differ fundamentally in configuration: 1.5KE27CA R0G is bidirectional, while 1.5KE27A is unidirectional. This makes 1.5KE27CA R0G suitable for AC line protection or differential bus clamping, whereas 1.5KE27A must be oriented with cathode toward the protected rail. Both meet ISO 7637-2, but only the CA version supports symmetric transient suppression without external polarity management.
What packaging options are available for 1.5KE27CA R0G?
1.5KE27CA R0G is supplied in DO-201 axial-leaded package, available in two standard packing formats: 1,250 pieces per tape-and-reel (ordering code ending in "R0G") and 500 pieces per ammo box (ordering code ending in "A0G"). The "R0G" suffix specifically denotes tape-and-reel packaging compatible with automated pick-and-place equipment. Lead finish is pure tin per J-STD-002, and the molding compound meets UL 94V-0 flammability rating-ensuring compatibility with lead-free reflow and safety-critical applications.
1.5KE27CA 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 42A
- 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
1.5KE27CA R0G FAQ
1.How can I place an order for 1.5KE27CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27CA 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 1.5KE27CA R0G reliable?
The price and inventory of 1.5KE27CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE27CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE27CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE27CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE27CA R0G?
1.5KE27CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27CA 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 1.5KE27CA R0G?
For technical support, including 1.5KE27CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27CA R0G requirements.
6.How does Aetrix verify that 1.5KE27CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE27CA 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 1.5KE27CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE27CA R0G?
All 1.5KE27CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27CA 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 1.5KE27CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE27CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27CA R0G Tags
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