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Taiwan Semiconductor Corporation 1.5KE47CA
- Part No.:
- 1.5KE47CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CA.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,680
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Product details
Overview
1.5KE47CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 47V, working stand-off voltage 38.1V, clamping voltage 67.8V at 23A peak pulse current, and junction temperature range −55°C to +175°C - used for automotive ESD and load-dump protection in power supply rails and CAN/LIN interfaces.
For engineers reviewing the 1.5KE47CA datasheet, 1.5KE47CA pinout, 1.5KE47CA application, or 1.5KE47CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, AEC-Q101 qualification, low dynamic impedance, and 1.0ps response time for unidirectional transients.
Technical Context
The 1.5KE47CA operates as a bidirectional avalanche diode, triggering symmetrically in both polarities above its 42.3–51.7V breakdown range (tested at 1mA). It clamps transient energy within 1.0ps (unidirectional mode) or 5.0ns (bidirectional mode), limiting induced overvoltage to ≤67.8V at 23A 10/1000μs waveform.
Its thermal design supports continuous operation up to +175°C junction temperature, with steady-state power dissipation of 5W at TL = 75°C on 16mm × 16mm copper pad. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements per DO-201 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 42.3V / 51.7V - ensures reliable conduction onset across manufacturing tolerance and temperature drift |
| VWM | 38.1V - maximum continuous reverse operating voltage before leakage exceeds 1µA |
| VC @ IPP | 67.8V at 23A - peak clamped voltage during 10/1000μs surge, defining protected circuit voltage ceiling |
| PPK | 1500W - single-pulse surge handling capacity under standardized waveform, critical for load-dump immunity |
| IPP | 23A - maximum non-repetitive peak impulse current the device sustains without degradation |
| TJ Range | −55°C to +175°C - enables deployment in under-hood automotive environments and industrial power systems |
| Response Time | <1.0ps (unidirectional), 5.0ns (bidirectional) - ensures sub-nanosecond reaction to fast ESD events |
Pinout & Package
Package: DO-201 - axial-leaded, molded plastic case with pure tin-plated leads compliant with J-STD-002 solderability; polarity indicated by cathode band (not applicable for bidirectional 1.5KE47CA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients - no fixed polarity |
| Cathode | Transient return path (bidirectional) | Acts as anode during positive transients and cathode during negative transients - symmetrical conduction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD coupling) |
| Low dynamic impedance | Minimizes voltage overshoot during high-di/dt surges by maintaining stable VC under fast-rising transients |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 120V, 400ms) on 12V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rail and ground to clamp overvoltage before it reaches DC-DC converters or microcontrollers. Use Value: Limits rail voltage to ≤67.8V during 23A surge, preventing latch-up or gate oxide damage in downstream ICs rated for 40V max input. | Use Scenario: Protecting 4–20mA current-loop transmitters from ESD and cable-induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Placed differential across loop terminals to absorb ±8kV contact ESD (IEC 61000-4-2) and fast transients (IEC 61000-4-4). Use Value: Clamps transient energy within 5ns, preserving analog accuracy and avoiding reset or communication loss in precision DACs and isolators. |
| Automotive LIN Bus Protection | LED Driver Input Stage Protection |
Use Scenario: Safeguarding LIN transceivers against battery reversal, jump-start spikes, and coupled noise in body control modules. IC Role / Device Role / Timing Role: Connected between LIN line and chassis ground to shunt common-mode transients while maintaining signal integrity below 20.5kbit/s. Use Value: Withstands ISO 7637-2 Pulse 2a (50V/50ms) and Pulse 3b (±50V/50ns), ensuring bus availability after repeated surges. | Use Scenario: Shielding constant-current LED drivers from inductive kickback when driving solenoid-based dimming circuits. IC Role / Device Role / Timing Role: Mounted across driver input terminals to clamp flyback voltages generated during MOSFET turn-off. Use Value: Absorbs 1500W peak pulses without degradation, enabling use of lower-cost 60V-rated MOSFETs instead of 100V+ devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45CA | 600W rating, SMB package, VBR = 50.0–55.3V, VC = 72.7V @ 8.3A | Lower surge capacity; suited for space-constrained PCBs where 1500W is not required | Select when board area is limited and peak surge current remains below 10A |
| 1.5SMC47CA | Same 1500W rating and VBR/VC, but SMC (DO-214AB) surface-mount package | No through-hole mounting; requires reflow-compatible layout and lacks axial lead mechanical robustness | Choose for automated assembly and higher-density layouts where DO-201 axial leads are impractical |
Compared with SMBJ45CA and 1.5SMC47CA, the 1.5KE47CA delivers identical clamping performance at full 1500W with proven axial-leaded ruggedness for high-vibration environments, while offering AEC-Q101 qualification not guaranteed in all SMB/SMC variants.
Availability
1.5KE47CA is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and LED driver designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant transient protection.
Supply support for 1.5KE47CA 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 thyristors 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 across temperature and surge repetition.
FAQ
What does the 'CA' suffix indicate in 1.5KE47CA?
The 'CA' suffix in 1.5KE47CA denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., 1.5KE47C), the 1.5KE47CA has no cathode marking and conducts identically in either polarity, making it ideal for AC-coupled or floating signal lines. This is confirmed in the datasheet's "Devices for Bipolar Applications" section.
Is 1.5KE47CA AEC-Q101 qualified?
Yes, 1.5KE47CA is AEC-Q101 qualified, as explicitly stated in the "FEATURES" section of the official Taiwan Semiconductor datasheet (Version O2104). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock - validating its suitability for automotive under-hood and powertrain applications.
What is the maximum clamping voltage of 1.5KE47CA and at what test condition?
The maximum clamping voltage (VC) of 1.5KE47CA is 67.8V, measured at a peak pulse current (IPP) of 23A under the standard 10/1000μs double-exponential waveform. This value is specified in the Electrical Specifications table on page 2 of the Taiwan Semiconductor datasheet and defines the upper voltage limit imposed on protected circuitry during surge events.
Can 1.5KE47CA be used in place of a unidirectional TVS like 1.5KE47C?
No - 1.5KE47CA is bidirectional and lacks polarity marking, whereas 1.5KE47C is unidirectional with a defined cathode band. Substituting 1.5KE47CA for 1.5KE47C in DC-biased circuits may cause unintended conduction during normal operation. The datasheet confirms that CA-suffix parts are intended for bipolar applications only, and their VBR and VC apply in both directions.
What packaging options are available for 1.5KE47CA?
1.5KE47CA is supplied in DO-201 package with two standard packing formats: 1,250 units per tape-and-reel (ordering code 1.5KE47CA) and 500 units per ammo box (ordering code 1.5KE47CA0G). Both options feature pure tin-plated leads compliant with J-STD-002 and meet JESD201 Class 2 whisker resistance requirements.
1.5KE47CA 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE47CA FAQ
1.How can I place an order for 1.5KE47CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CA 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 1.5KE47CA reliable?
The price and inventory of 1.5KE47CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47CA is usually 5 days.
3.What payment methods are accepted for 1.5KE47CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47CA?
1.5KE47CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47CA 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 1.5KE47CA?
For technical support, including 1.5KE47CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CA requirements.
6.How does Aetrix verify that 1.5KE47CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CA 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 1.5KE47CA meets industry standards.
7.What is the process for return or replacement of 1.5KE47CA?
All 1.5KE47CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CA, 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 1.5KE47CA part is unused and in its original packaging.
Return procedure for 1.5KE47CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47CA Tags
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