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Taiwan Semiconductor Corporation 1V5KE47CA
- Part No.:
- 1V5KE47CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE47CA.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:7,457
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Product details
Overview
1V5KE47CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 1500W peak pulse power rating, 44.7–49.4V breakdown voltage (VBR), 40.2V reverse stand-off voltage (VRWM), 64.8V clamping voltage at 23.2A peak pulse current, and DO-201 axial package - used to safeguard microcontrollers, communication ports, and industrial I/O against ESD and lightning-induced transients.
For engineers reviewing the 1V5KE47CA datasheet, 1V5KE47CA pinout, 1V5KE47CA application, or 1V5KE47CA equivalent, key selection criteria include its bidirectional clamping behavior, low incremental surge resistance, sub-1μA leakage above 40.2V, fast response time, and UL 94V-0 molded case - all critical for robust overvoltage immunity in automotive body electronics and industrial control systems.
Technical Context
The 1V5KE47CA operates as a silicon avalanche diode with glass-passivated junction, enabling precise bidirectional voltage clamping without polarity dependence. Its VBR range (44.7–49.4V) and VRWM of 40.2V define the operating margin before conduction, while the 64.8V clamping voltage at 23.2A ensures predictable energy diversion during 10/1000μs surges.
It complies with JEDEC standards for unidirectional/bidirectional TVS devices and meets JESD201 Class 2 whisker resistance. The device sustains junction temperatures from –55°C to +175°C and delivers 1500W peak pulse power at Tp = 1ms, with derating above 75°C ambient per its steady-state power curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7V / 49.4V - defines guaranteed avalanche onset range under 1mA test current; sets minimum overvoltage threshold before clamping activation |
| VRWM | 40.2V - maximum continuous reverse voltage the device blocks without significant leakage; determines safe operating DC bias limit |
| VC @ IPPM | 64.8V at 23.2A - clamped voltage during 10/1000μs surge; directly limits stress on downstream ICs during transient events |
| PPPM | 1500W - peak pulse power handling at 1ms; enables protection against IEC 61000-4-5 Level 4 surges (4kV/2Ω) |
| IR @ VRWM | <1μA - ultra-low reverse leakage ensures minimal power loss and no interference with high-impedance sensing circuits |
| TJ max | +175°C - maximum junction temperature supports operation in under-hood automotive or enclosed industrial enclosures |
| Package | DO-201 - axial-leaded, through-hole package with tin-plated leads compliant to J-STD-002; suitable for wave soldering and manual rework |
Pinout & Package
DO-201 package: axial leaded, cylindrical epoxy-molded case with cathode band marking for unidirectional variants; for 1V5KE47CA (bidirectional), polarity marking is non-functional - both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminal | No functional polarity - either lead connects to protected line or ground; enables placement flexibility in AC-coupled or floating bus protection |
| Case | Non-conductive epoxy body | Provides mechanical support, electrical isolation, and UL 94V-0 flame retardancy; no thermal or electrical connection to junction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift |
| 1500W peak pulse power | Supports compliance with IEC 61000-4-5 (surge immunity) and ISO 7637-2 (automotive load dump) test requirements |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3V/5V logic interfaces |
| Fast response time (<1ps) | Clamps transients before they propagate into sensitive circuitry - critical for protecting USB, RS-485, and CAN physical layers |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant industrial and automotive manufacturing |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protects 12V supply rail of BCM from load dump and jump-start transients up to 35V sustained and 100V spikes. IC Role / Device Role: Bidirectional TVS placed between VIN and GND to clamp positive/negative surges without requiring polarity-aware layout. Use Value: With 40.2V VRWM and 64.8V VC, it prevents damage to LDOs and MCU power pins while maintaining system uptime during battery disconnection events. | Use Scenario: Shields RS-485 transceivers (e.g., THVD1550) from ESD and cable discharge events in factory automation networks. IC Role / Device Role: Placed across differential bus lines (A/B) and ground to suppress common-mode and differential-mode transients. Use Value: Sub-1μA leakage avoids signal integrity degradation; 64.8V clamping ensures transceiver survival under ±15kV contact ESD per IEC 61000-4-2. |
| Smart Lighting Driver DC Bus | Programmable Logic Controller (PLC) Digital Input Protection |
Use Scenario: Guards constant-current LED driver input against inductive kickback from relay coils and transformer switching. IC Role / Device Role: Connected from DC bus (+) to chassis ground to absorb 1500W inductive energy spikes. Use Value: DO-201 package withstands >200A surge current (IFSM = 200A); 175°C TJ rating allows mounting near heat-generating MOSFETs. | Use Scenario: Protects 24V digital input channels of PLC modules from field-wiring faults and electrostatic coupling. IC Role / Device Role: Installed between input terminal and internal optocoupler anode to limit transient voltage seen by isolation barrier. Use Value: 40.2V VRWM matches standard 24V industrial logic; bidirectional symmetry eliminates need for dual-diode arrangements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | DO-214AA (SMB) package; 43V VRWM; 69.4V VC @ 21.7A; 600W PPPM | Lower power rating and surface-mount only; unsuitable for high-energy 12V/24V bus protection | Prefer 1V5KE47CA where 1500W surge handling and through-hole assembly are required |
| 1N6287A | Same manufacturer, identical specs and DO-201 package; JEDEC part number for 1V5KE47CA | No functional difference; used interchangeably in BOMs referencing JEDEC nomenclature | Select 1V5KE47CA for branded Taiwan Semiconductor sourcing; 1N6287A for legacy JEDEC-compliant procurement |
Compared with SMBJ43CA and 1N6287A, the 1V5KE47CA offers superior surge energy absorption (1500W vs. 600W) and direct compatibility with through-hole production lines, while sharing identical electrical performance with 1N6287A - making it optimal for high-reliability industrial power rail protection where board-level robustness is prioritized.
Availability
1V5KE47CA is available at Aetrix Electronics and suitable for automotive body electronics, industrial communication interfaces, smart lighting drivers, and programmable logic controller (PLC) input protection requiring stable component supply and long-lifecycle availability.
Supply support for 1V5KE47CA 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 1V5KExxCA series belongs to TSC's high-power TVS diode product line, engineered specifically for ruggedized overvoltage protection in automotive, industrial, and infrastructure applications where reliability under repetitive surge stress is mandatory.
FAQ
What is the breakdown voltage range of the 1V5KE47CA?
The 1V5KE47CA has a specified breakdown voltage (VBR) range of 44.7V to 49.4V at 1mA test current, per the Taiwan Semiconductor datasheet. This range ensures consistent avalanche initiation across production lots and temperature extremes, and directly informs system-level overvoltage design margins. The 1V5KE47CA maintains this specification under JEDEC-standard test conditions and is validated for bidirectional operation.
Is the 1V5KE47CA unidirectional or bidirectional?
The 1V5KE47CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's naming convention. Its electrical characteristics - including VBR, VRWM, and VC - apply identically in both directions, eliminating polarity concerns during PCB placement. Unlike unidirectional variants (e.g., 1V5KE47A), the 1V5KE47CA provides symmetrical clamping for AC-coupled or floating signal lines.
What is the clamping voltage of the 1V5KE47CA at its rated peak pulse current?
The 1V5KE47CA clamps to a maximum of 64.8V at its rated peak pulse current (IPPM) of 23.2A under a 10/1000μs waveform. This value is measured per industry-standard surge testing protocols and defines the upper voltage limit imposed on protected circuitry during transient events. The 1V5KE47CA achieves this with low incremental resistance, minimizing overshoot beyond 64.8V.
Does the 1V5KE47CA meet RoHS and halogen-free requirements?
Yes, the 1V5KE47CA is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in Taiwan Semiconductor's official documentation. The device uses lead-free, pure tin-plated leads and a halogen-free molding compound, supporting environmentally regulated manufacturing in automotive and industrial sectors. This compliance is verified for the DO-201 package variant shipped under standard ordering codes.
What is the maximum junction temperature rating for the 1V5KE47CA?
The 1V5KE47CA has a maximum junction temperature (TJ) rating of +175°C, allowing reliable operation in high-ambient environments such as engine compartments, enclosed motor drives, or industrial power supplies. This rating is supported by its glass-passivated junction and UL 94V-0 epoxy package. Derating curves confirm usable power dissipation up to this limit when lead temperature is controlled per JEDEC guidelines.
1V5KE47CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- 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):
- 23.2A
- 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-201AD
1V5KE47CA FAQ
1.How can I place an order for 1V5KE47CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE47CA 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 1V5KE47CA reliable?
The price and inventory of 1V5KE47CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE47CA is usually 5 days.
3.What payment methods are accepted for 1V5KE47CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE47CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE47CA?
1V5KE47CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE47CA 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 1V5KE47CA?
For technical support, including 1V5KE47CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE47CA requirements.
6.How does Aetrix verify that 1V5KE47CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE47CA 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 1V5KE47CA meets industry standards.
7.What is the process for return or replacement of 1V5KE47CA?
All 1V5KE47CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE47CA, 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 1V5KE47CA part is unused and in its original packaging.
Return procedure for 1V5KE47CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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