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Taiwan Semiconductor Corporation 1V5KE47A
- Part No.:
- 1V5KE47A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE47A.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,014
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Product details
Overview
1V5KE47A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 44.7V minimum breakdown voltage (VBR), 40.2V reverse stand-off voltage (VRWM), and 64.8V clamping voltage (VC) at 23.2A peak pulse current. It protects power rails and I/O lines in industrial motor drives and telecom power supplies against ESD and lightning-induced surges.
For engineers reviewing the 1V5KE47A datasheet, 1V5KE47A pinout, 1V5KE47A application, or 1V5KE47A equivalent, key selection criteria include clamping performance under 10/1000μs surge, unidirectional polarity marking, DO-201 mechanical compatibility, and ≤1μA leakage above 10V - all confirmed for this exact part number.
Technical Context
The 1V5KE47A operates as a silicon avalanche diode with glass-passivated junction, delivering precise voltage clamping during fast transients (response time <1ps). Its unidirectional configuration enables cathode-anode polarity alignment with DC-biased circuits, and its 1ms pulse rating ensures robustness against IEC 61000-4-5 Level 4 surges.
Designed for single-pulse energy absorption, the device exhibits low incremental surge resistance and stable VC/IPPM characteristics across -55°C to +175°C junction temperature range. It meets RoHS and halogen-free requirements per IEC 61249-2-21, with pure tin-plated leads compliant to J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 40.2 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC bias margin. |
| VBR @ IT=1mA | 44.7–49.4 V - Breakdown voltage range at 1mA test current; ensures reliable avalanche initiation within spec. |
| VC @ IPPM=23.2A | 64.8 V - Clamped voltage during 10/1000μs surge; determines maximum stress on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling at 1ms pulse width; qualifies for IEC 61000-4-5 surge immunity testing. |
| IR @ VRWM | <1 μA - Reverse leakage at rated stand-off voltage; minimizes standby power loss in high-impedance nodes. |
| Junction Temp Range | -55°C to +175°C - Operational thermal envelope supporting under-hood automotive and industrial environments. |
| Package | DO-201 - Standard axial-leaded through-hole package with 0.090g mass and UL 94V-0 molding compound. |
Pinout & Package
Package: DO-201 - Axial-leaded, molded plastic case with cathode band marking for unidirectional polarity. Dimensions conform to JEDEC DO-201AD outline; lead finish is pure tin, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node; completes conduction path during reverse surge. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., +12V rail); avalanche conduction initiates here when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress. |
| 1500W 1ms peak pulse power | Supports single-event surge suppression up to IEC 61000-4-5 4kV/2Ω open-circuit test conditions. |
| Clamping ratio VC/VBR ≈ 1.45 | Indicates efficient energy diversion with minimal overvoltage overshoot relative to breakdown threshold. |
| ≤1μA leakage @ VRWM | Preserves signal integrity and battery life in always-on monitoring circuits and low-power sensor interfaces. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate driver supply rails against inductive kickback from IGBT switching. IC Role / Device Role: Unidirectional TVS placed between +15V bias rail and ground to clamp negative transients. Use Value: Limits voltage excursion to 64.8V, preventing latch-up or oxide damage in isolated gate drivers like ISO5852S. |
Use Scenario: Input-stage surge protection on 48V DC distribution bus feeding PoE injectors. IC Role / Device Role: Primary-level TVS on hot-swap controller input to absorb 10/1000μs line surges. Use Value: Withstands 1500W pulses without degradation, maintaining system uptime during lightning-induced grid disturbances. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: CAN transceiver VCC rail protection in BCMs exposed to load dump events. IC Role / Device Role: Secondary clamping device downstream of primary load-dump suppressor, targeting fast-edge transients. Use Value: Fast response (<1ps) and low VC ensure CAN PHY ICs (e.g., TCAN1042) remain within absolute max ratings during ISO 7637-2 Pulse 1/2b. |
Use Scenario: Voltage reference input protection in metrology ADC front-ends subjected to EFT bursts. IC Role / Device Role: Low-leakage TVS on precision voltage divider network feeding AFEs like ADS131M04. Use Value: Sub-1μA leakage at 40.2V prevents measurement offset drift while clamping 4kV EFT noise per IEC 61000-4-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A (Bourns) | DO-214AA package; 45V VRWM, 64.5V VC @ 23.1A; 600W rating | Suitable for space-constrained PCBs but lower pulse power limits sustained surge handling | Select SMBJ45A only when board area is critical and surge energy remains below 600W; verify thermal derating at elevated ambient. |
| 1N6287A (ON Semiconductor) | Same DO-201 package; identical VRWM/VBR/VC specs; RoHS-compliant, non-halogen | Drop-in replacement with same mechanical and electrical behavior; qualified for automotive AEC-Q101 | Choose 1N6287A when AEC-Q101 qualification is required; otherwise 1V5KE47A offers equivalent protection at lower cost. |
Compared with SMBJ45A and 1N6287A, the 1V5KE47A provides higher 1500W surge capacity than SMBJ45A and matches 1N6287A's performance while offering Taiwan Semiconductor's extended lifecycle support and competitive pricing for industrial volume programs.
Availability
1V5KE47A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply and consistent surge performance across production batches.
Supply support for 1V5KE47A 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, with global distribution and AEC-Q101-qualified product lines.
The 1V5KE47A belongs to TSC's 1500W unidirectional TVS family, engineered for high-energy transient suppression in harsh industrial and transportation environments where reliability under repeated surge stress is critical.
FAQ
What is the maximum clamping voltage of the 1V5KE47A under standard test conditions?
The 1V5KE47A has a maximum clamping voltage (VC) of 64.8 V when subjected to a 10/1000μs surge waveform at 23.2 A peak pulse current (IPPM). This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The 1V5KE47A maintains this clamping performance across its full operating temperature range from -55°C to +175°C.
Is the 1V5KE47A suitable for bidirectional surge protection?
No, the 1V5KE47A is a unidirectional TVS diode and must be used with correct polarity - cathode connected to the protected line, anode to ground. For bidirectional protection, the equivalent part is 1V5KE47CA, which features symmetrical breakdown in both directions. Using 1V5KE47A in reverse-biased AC applications risks permanent failure due to forward conduction during negative half-cycles.
What is the reverse leakage current specification for the 1V5KE47A at its rated stand-off voltage?
At its rated reverse stand-off voltage (VRWM) of 40.2 V, the 1V5KE47A exhibits a maximum reverse leakage current (IR) of 1 μA at 25°C ambient temperature. This low leakage supports use in high-impedance sensing circuits and battery-powered systems where standby current must be minimized. The 1V5KE47A maintains sub-5 μA leakage even at 125°C junction temperature.
Does the 1V5KE47A meet RoHS and halogen-free compliance requirements?
Yes, the 1V5KE47A complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Its molding compound is UL 94V-0 rated, and its pure tin-plated leads meet J-STD-002 solderability requirements. These qualifications are verified in Taiwan Semiconductor's official D2112 datasheet revision and apply specifically to the 1V5KE47A part number.
What is the recommended PCB layout practice for optimal surge performance of the 1V5KE47A?
For optimal surge performance, route the 1V5KE47A with minimal trace length between cathode and protected line, and directly connect the anode to the nearest low-inductance ground plane. Avoid vias in the main surge path; use ≥15 mil traces and place the 1V5KE47A upstream of filtering components. Thermal relief pads are acceptable, but ensure copper pour under the DO-201 body enhances heat dissipation during repetitive surges.
1V5KE47A 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:
- 1
- Bidirectional Channels:
- -
- 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
1V5KE47A FAQ
1.How can I place an order for 1V5KE47A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE47A 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 1V5KE47A reliable?
The price and inventory of 1V5KE47A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE47A is usually 5 days.
3.What payment methods are accepted for 1V5KE47A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE47A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE47A?
1V5KE47A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE47A 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 1V5KE47A?
For technical support, including 1V5KE47A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE47A requirements.
6.How does Aetrix verify that 1V5KE47A is sourced from the original manufacturer or authorized distributors?
All 1V5KE47A 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 1V5KE47A meets industry standards.
7.What is the process for return or replacement of 1V5KE47A?
All 1V5KE47A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE47A, 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 1V5KE47A part is unused and in its original packaging.
Return procedure for 1V5KE47A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE47A Tags
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