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Taiwan Semiconductor Corporation 1.5KE47C
- Part No.:
- 1.5KE47C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47C.pdf
- Description:
- 1500W, 47V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,089
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Product details
Overview
1.5KE47C from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-201 package, rated for 1500W peak pulse power at 10/1000μs, with 47V nominal breakdown voltage (VBR min 42.3V, max 51.7V), 38.1V working stand-off voltage (VWM), and 67.8V maximum clamping voltage (VC) at 23A peak impulse current - deployed for ESD and load-dump protection in automotive lighting and industrial control interfaces.
For engineers reviewing the 1.5KE47C datasheet, 1.5KE47C pinout, 1.5KE47C application, or 1.5KE47C equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low dynamic impedance, sub-5ns response time, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The 1.5KE47C operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity dependence. Its junction structure enables fast turn-on (<5.0ns response from 0V to VBR) and low dynamic impedance, ensuring effective suppression of electrical fast transients (EFT) and inductive switching spikes.
It meets ISO 7637-2 test requirements for automotive electronics, including Pulse 1 (inductive load disconnect), Pulse 2a (battery line interruption), Pulse 2b (alternator load dump simulation), and Pulses 3a/3b (capacitive coupling transients). The device sustains 1500W non-repetitive surge power at TA = 25°C and derates linearly above that ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1.0mA | 42.3V min to 51.7V max - defines reliable avalanche initiation threshold under standardized test current |
| VWM | 38.1V - maximum continuous reverse voltage before leakage exceeds 1µA, ensuring no false triggering during normal operation |
| VC @ IPP = 23A | 67.8V - clamped voltage during 10/1000μs surge, limiting downstream IC stress to safe levels |
| PPK | 1500W - peak pulse power handling capacity per JEDEC standard, critical for load-dump survival |
| TJ max | +175°C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | DO-201 - industry-standard axial-leaded package with UL 94V-0 molding compound and tin-plated leads |
| Response time | <5.0ns - ensures suppression activation before transient energy damages sensitive logic or analog circuitry |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy-molded case with cathode band marking for unidirectional variants; 1.5KE47C is bidirectional and lacks polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Both terminals function identically - no polarity dependency; connects across protected line and ground or differential pair |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, data buses, or floating inputs without external polarity management |
| ISO 7637-2 compliance | Validated performance against automotive transient pulses (Pulse 1/2a/2b/3a/3b), reducing system-level validation effort |
| AEC-Q101 qualification | Guarantees reliability under temperature cycling, mechanical shock, and humidity testing required for automotive electronics |
| Low dynamic impedance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin for 3.3V/5V ICs |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS directives for environmentally compliant manufacturing and end-of-life processing |
Applications
| Automotive Lighting Modules | Industrial CAN Bus Interfaces |
|---|---|
Use Scenario: LED headlamp drivers exposed to battery load dump and alternator ripple in 12V vehicle systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed across power input to protect DC-DC controllers and LED driver ICs. Use Value: Limits transient voltage to ≤67.8V during 1500W load dump events, preventing latch-up or gate oxide damage in downstream MOSFETs and regulators. | Use Scenario: CAN transceivers in factory automation nodes subjected to EFT bursts and inductive coupling from nearby motor drives. IC Role / Device Role / Timing Role: Bidirectional TVS on CAN_H/CAN_L differential pair to shunt common-mode surges before they reach PHY layer. Use Value: Sub-5ns response ensures clamping activation prior to CAN bit timing violation, preserving bus integrity during 4kV EFT tests per IEC 61000-4-4. |
| Power Supply Input Protection | ESD-Sensitive Sensor Front-Ends |
Use Scenario: 24V industrial power supply input subject to lightning-induced surges and relay contact bounce. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of input filter and primary regulator. Use Value: 1500W surge rating handles repetitive 10/1000μs transients up to 23A, extending capacitor and MOSFET lifetime in harsh plant-floor environments. | Use Scenario: Analog front-end of temperature/humidity sensors connected to long PCB traces acting as ESD antennas. IC Role / Device Role / Timing Role: Localized bidirectional clamp at sensor connector to divert human-body-model (HBM) and IEC 61000-4-2 contact discharge. Use Value: Clamps 8kV contact ESD to <67.8V within 5ns, preventing latch-up in precision op-amps and ADC reference circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ47CA | Same DO-214AC (SMA) package; lower PPK (400W); VBR 42.2–46.8V; VC = 68.3V @ 11.5A | Suitable for space-constrained PCBs but requires parallel devices or higher-rated variants for 1500W load-dump duty | Select when board area is limited and surge energy is ≤400W; verify thermal derating for repeated events |
| ON Semiconductor 1.5SMC47CA | DO-214AB (SMC) package; PPK = 1500W; VBR 42.2–46.8V; VC = 68.3V @ 22A; AEC-Q101 qualified | Surface-mount alternative with identical surge rating and automotive qualification, but different footprint and reflow profile | Choose for SMT production lines where through-hole DO-201 is incompatible with assembly process |
Compared with 1.5KE47C, SMAJ47CA offers smaller size but reduced surge capacity, while 1.5SMC47CA matches 1500W rating and AEC-Q101 compliance in an SMT package - making it a drop-in functional replacement only if layout and thermal design accommodate SMC footprint and solder joint reliability.
Availability
1.5KE47C is available at Aetrix Electronics and suitable for automotive lighting modules, industrial CAN bus interfaces, power supply input protection, and ESD-sensitive sensor front-ends requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE47C 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 - headquartered in Hsinchu, Taiwan.
The 1.5KE series is designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for through-hole reliability.
FAQ
What is the clamping voltage of the 1.5KE47C under a 10/1000μs surge?
The 1.5KE47C has a maximum clamping voltage (VC) of 67.8V at 23A peak impulse current (IPP), measured under the standard 10/1000μs double-exponential waveform. This value ensures protected circuitry remains below critical voltage thresholds during automotive load-dump or inductive switching events. The 1.5KE47C maintains this clamping performance across its specified operating temperature range and is validated per ISO 7637-2 Pulse 2b test conditions.
Is the 1.5KE47C unidirectional or bidirectional?
The 1.5KE47C is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without polarity sensitivity. Unlike unidirectional variants (e.g., 1.5KE47A), the "C" suffix denotes bidirectional functionality - confirmed by identical VBR min/max values in both directions and absence of cathode band marking. This makes the 1.5KE47C ideal for protecting AC-coupled lines, differential buses like CAN, or floating sensor inputs.
Does the 1.5KE47C meet AEC-Q101 requirements?
Yes, the 1.5KE47C is AEC-Q101 qualified, as explicitly stated in Taiwan Semiconductor's 1.5KE series documentation. This qualification covers stress tests including temperature cycling, high-temperature operating life, unbiased highly accelerated stress testing (uHAST), and mechanical shock - confirming suitability for automotive under-hood and chassis applications. The 1.5KE47C's DO-201 package also meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
What is the working stand-off voltage (VWM) of the 1.5KE47C?
The working stand-off voltage (VWM) of the 1.5KE47C is 38.1V - the maximum DC or continuous reverse voltage the device can withstand without exceeding 1µA leakage current. This parameter ensures the 1.5KE47C remains non-conductive during normal 24V or 36V system operation while still triggering reliably during overvoltage events. It is derived from the nominal 47V rating with a ~19% margin, consistent with industry-standard TVS derating practices.
How does the 1.5KE47C compare to the 1.5KE47A variant?
The 1.5KE47C is bidirectional with symmetrical clamping, whereas the 1.5KE47A is unidirectional and features a cathode band marking. Their VBR ranges differ slightly: 1.5KE47C is 42.3–51.7V, while 1.5KE47A is 44.7–49.4V. Both share identical PPK (1500W), VC (64.8V for 1.5KE47A vs. 67.8V for 1.5KE47C), and DO-201 packaging. Use 1.5KE47C for AC or differential signal protection; choose 1.5KE47A only when polarity-controlled DC rail protection is required.
1.5KE47C 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):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 23A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE47C FAQ
1.How can I place an order for 1.5KE47C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47C 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 1.5KE47C reliable?
The price and inventory of 1.5KE47C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47C is usually 5 days.
3.What payment methods are accepted for 1.5KE47C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47C?
1.5KE47C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47C 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 1.5KE47C?
For technical support, including 1.5KE47C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47C requirements.
6.How does Aetrix verify that 1.5KE47C is sourced from the original manufacturer or authorized distributors?
All 1.5KE47C 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 1.5KE47C meets industry standards.
7.What is the process for return or replacement of 1.5KE47C?
All 1.5KE47C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47C, 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 1.5KE47C part is unused and in its original packaging.
Return procedure for 1.5KE47C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47C Tags
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