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Taiwan Semiconductor Corporation 1.5KE12CA R0G
- Part No.:
- 1.5KE12CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12CA R0G.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,459
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Product details
Overview
1.5KE12CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 12V, working stand-off voltage 9.72V, clamping voltage 17.3V at 91A peak pulse current, and fast response time <5.0ns - deployed for ESD and load-dump protection in automotive power rails and industrial I/O interfaces.
For engineers reviewing the 1.5KE12CA R0G datasheet, 1.5KE12CA R0G pinout, 1.5KE12CA R0G application, or 1.5KE12CA R0G equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, AEC-Q101 qualification (R0G suffix denotes green, halogen-free, RoHS-compliant packaging), and thermal derating behavior above 25°C ambient.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance across positive and negative transients. Its low dynamic impedance and sub-5ns response ensure effective suppression of fast electrical fast transients (EFT) and electrostatic discharge events before sensitive downstream circuitry is stressed.
The device meets ISO 7637-2 test requirements for automotive electronics, including Pulse 1 (inductive load dump), Pulse 2a (sudden load disconnection), Pulse 2b (supply line interruption), and Pulse 3a/3b (capacitive coupling transients). Junction temperature range spans −55°C to +175°C, supporting under-hood and industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.8V / 13.2V @ IT = 1mA - defines reliable conduction onset window under standardized test conditions |
| VWM | 9.72V - maximum continuous reverse operating voltage before leakage exceeds 1µA |
| VC @ IPP | 17.3V @ 91A - clamped voltage during 10/1000µs surge, limiting stress on protected ICs |
| PPK | 1500W - peak pulse power handling per single non-repetitive 10/1000µs waveform |
| Junction Temp | −55°C to +175°C - enables deployment in engine control units and industrial motor drives |
| Response Time | <5.0ns - ensures suppression activation prior to propagation of ESD/EFT into signal paths |
| Leakage @ VWM | <1µA - minimizes standby power loss in always-on automotive modules |
Pinout & Package
DO-201 axial-leaded package with cathode band marking (bidirectional symmetry means no polarity dependency; band indicates terminal identification per JEDEC standard). Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; clamping occurs when voltage magnitude exceeds VBR in either polarity |
| Case (non-connected) | Mechanical mounting surface | DO-201 body provides mechanical stability but no electrical connection; no thermal pad or exposed metal tab |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPP performance for ± transients - eliminates need for dual unidirectional devices |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for ASIL-B subsystems |
| ISO 7637-2 compliance | Passes Pulse 1 (−150V/0.5Ω), Pulse 2a (+100V), Pulse 2b (−100V), Pulse 3a/3b (±50V) - certified for 12V vehicle networks |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and end-of-life recycling |
| Low dynamic impedance | Enables tighter clamping margin (VC − VBR = 6.5V) versus competing 12V TVS diodes - reduces overvoltage overshoot risk |
Applications
| Automotive Power Rail Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller supply pins against load dump and jump-start surges in 12V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between VCC and GND, activated within 5ns to limit voltage excursion to ≤17.3V. Use Value: Prevents latch-up or gate oxide damage in 3.3V/5V logic ICs by holding rail voltage below absolute maximum ratings during ISO 7637-2 Pulse 2a/2b events. |
Use Scenario: Safeguarding RS-485 transceiver inputs against ESD strikes and inductive kickback from solenoid drivers on factory floor PLC modules. IC Role / Device Role / Timing Role: Parallel-connected TVS on differential pair lines (A/B) and common-mode line (GND), clamping ±15kV contact ESD per IEC 61000-4-2. Use Value: Maintains data integrity by suppressing transients before they propagate into receiver input stages, avoiding bit errors or reset events during field operation. |
| Lighting System Surge Suppression | Consumer Appliance Motor Control |
Use Scenario: Shielding LED driver ICs and MOSFET gate drivers in automotive headlamps from alternator ripple and relay switching noise. IC Role / Device Role / Timing Role: Mounted directly at DC/DC converter input, clamping repetitive 100V–200V spikes generated by PWM-controlled ballasts. Use Value: Extends lifetime of high-side N-channel MOSFETs by limiting VDS stress during turn-off, reducing cumulative avalanche energy accumulation. |
Use Scenario: Protecting MCU GPIOs and optocoupler inputs in washing machine control boards from triac commutation transients and pump motor back-EMF. IC Role / Device Role / Timing Role: Low-leakage (≤1µA @ 9.72V) TVS placed across microcontroller reset line and zero-crossing detector inputs. Use Value: Eliminates false resets and missed zero-crossing detection caused by 2–5kV transients, improving cycle consistency and user safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Lower peak power (600W), smaller SMB package (vs. DO-201), higher VC (21.2V @ 28.3A) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 without external series impedance | Select when board space is constrained and surge energy remains below 600W; verify thermal dissipation in SMB footprint |
| 1.5SMC12CA | Same 1500W rating and DO-214AB package; slightly higher VWM (10.2V) and VC (19.9V @ 75.4A) | Compatible with same PCB layout if lead pitch matches; requires revalidation of clamping margin in critical 12V rail designs | Prefer when existing design uses SMC footprint and needs identical power rating; confirm VC margin vs. protected IC's absolute max rating |
Compared with 1.5KE12CA R0G, SMBJ12CA trades surge robustness for compactness, while 1.5SMC12CA offers equivalent power handling in surface-mount form - both require reassessment of clamping voltage margin and thermal derating curves relative to the original DO-201 through-hole implementation.
Availability
1.5KE12CA R0G is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial PLC I/O modules, LED lighting drivers, and appliance motor controllers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE12CA 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 TVS diodes, rectifiers, MOSFETs, and power management components since 1979.
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 axial-leaded packages.
FAQ
What does the 'CA' suffix mean in 1.5KE12CA R0G?
The 'CA' suffix in 1.5KE12CA R0G denotes a bidirectional configuration - meaning the device provides symmetrical clamping for both positive and negative voltage transients. This distinguishes it from unidirectional variants (e.g., 1.5KE12A), which only clamp in one polarity and require correct orientation during placement. The 1.5KE12CA R0G is therefore ideal for AC-coupled or floating signal lines where polarity reversal is possible.
Is 1.5KE12CA R0G AEC-Q101 qualified?
Yes, 1.5KE12CA R0G is AEC-Q101 qualified - confirmed by Taiwan Semiconductor's documentation and ordering code structure (R0G suffix aligns with green, halogen-free, automotive-grade packaging). It has undergone stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 standards, making it suitable for automotive powertrain and body electronics applications.
What is the maximum clamping voltage of 1.5KE12CA R0G at its rated peak pulse current?
The maximum clamping voltage (VC) of 1.5KE12CA R0G is 17.3V at a peak pulse current (IPP) of 91A, measured under the standard 10/1000µs double-exponential waveform. This value represents the upper bound of voltage seen by protected circuitry during worst-case surge events and must be compared against the absolute maximum ratings of downstream ICs to ensure safe operation.
How does the DO-201 package of 1.5KE12CA R0G affect thermal performance?
The DO-201 package of 1.5KE12CA R0G provides robust thermal mass for transient power dissipation but relies on lead conduction for heat transfer - unlike surface-mount packages with thermal pads. Derating begins above 25°C ambient, with ~80% power capability retained at 75°C and ~50% at 125°C. For sustained surge duty cycles, PCB copper area and lead length must follow Taiwan Semiconductor's recommended 0.6" × 0.6" (16mm × 16mm) copper pad guideline to maintain reliability.
Can 1.5KE12CA R0G replace a unidirectional TVS like 1.5KE12A in an existing design?
No - 1.5KE12CA R0G cannot directly replace 1.5KE12A without circuit review. While both share the same VBR and PPK, the unidirectional 1.5KE12A conducts only during negative transients (cathode-to-anode), whereas 1.5KE12CA R0G clamps in both directions. Substitution may cause unintended conduction in DC-biased rails or alter system-level fault behavior; layout and schematic validation are required before interchange.
1.5KE12CA 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 94A
- 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
1.5KE12CA R0G FAQ
1.How can I place an order for 1.5KE12CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12CA 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 1.5KE12CA R0G reliable?
The price and inventory of 1.5KE12CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE12CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE12CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12CA R0G?
1.5KE12CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12CA 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 1.5KE12CA R0G?
For technical support, including 1.5KE12CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12CA R0G requirements.
6.How does Aetrix verify that 1.5KE12CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE12CA 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 1.5KE12CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE12CA R0G?
All 1.5KE12CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12CA 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 1.5KE12CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE12CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12CA R0G Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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