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Taiwan Semiconductor Corporation 1.5KE47CA B0G
- Part No.:
- 1.5KE47CA B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CA B0G.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,642
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Product details
Overview
1.5KE47CA B0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 47V nominal breakdown voltage (VBR min 42.3V, max 51.7V at 1mA), 38.1V working stand-off voltage (VWM), and 67.8V clamping voltage (VC) at 23A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE47CA B0G datasheet, 1.5KE47CA B0G pinout, 1.5KE47CA B0G application, or 1.5KE47CA B0G equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, DO-201 mechanical data, AEC-Q101 qualification status, and real-world ESD/inductive-spike protection use cases - all confirmed from Taiwan Semiconductor's official O2104 datasheet.
Technical Context
The 1.5KE47CA B0G is a bipolar junction TVS diode designed for bidirectional surge suppression. Its symmetrical VBR (42.3–51.7V) and VC (67.8V @ 23A) apply identically in both directions, enabling single-device protection of AC lines or floating DC buses without polarity concerns.
It delivers 1500W peak pulse power (10/1000μs waveform), operates across –55°C to +175°C junction temperature, and exhibits low dynamic impedance with <1μA leakage at 38.1V - critical for maintaining system standby integrity while ensuring fast response (<5ns) to fast-rising transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 42.3V min / 51.7V max - defines precise voltage threshold where avalanche conduction begins in either polarity |
| VWM | 38.1V - maximum continuous reverse voltage before leakage exceeds 1μA; sets safe operating margin below VBR |
| VC @ IPP = 23A | 67.8V - clamped voltage during 10/1000μs surge; determines worst-case overvoltage seen by protected ICs |
| PPK | 1500W - peak pulse power handling capability; enables robust protection against automotive load-dump and ISO 7637-2 pulses |
| Package | DO-201 - industry-standard axial-leaded package with UL 94V-0 molding, tin-plated leads, and 0.090g mass |
| TJ max | +175°C - high junction temperature rating supports under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - certified for automotive-grade reliability per stress test requirements including temperature cycling and HTRB |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; 1.5KE47CA B0G is bidirectional and marked with part-specific code (no polarity band required). Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; identical clamping performance in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating DC buses without external polarity management |
| 1500W surge rating (10/1000μs) | Meets ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) |
| <5ns response time | Ensures suppression activation before transient energy couples into sensitive downstream circuitry |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal, vibration, and humidity stress conditions |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 48V battery-connected ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Limits rail voltage to ≤67.8V during 1500W surges, preventing latch-up or gate oxide damage in downstream silicon. |
Use Scenario: Safeguarding analog front-ends of pressure/temperature sensors exposed to motor drive noise. IC Role / Device Role / Timing Role: Bidirectional shunt element on differential signal lines or supply inputs. Use Value: Clamps ±67.8V transients without polarity biasing, preserving signal integrity in noisy factory environments. |
| LED Driver Surge Suppression | Power Supply Input Stage Protection |
|
Use Scenario: Absorbing inductive kickback from relay coils or solenoid drivers in LED lighting systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across coil terminals or driver output stage. Use Value: Diverts 23A surge current away from driver MOSFETs, extending lifetime and avoiding catastrophic failure. |
Use Scenario: Front-end protection for AC-DC and DC-DC power supplies subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient absorber before input rectification and bulk capacitance. Use Value: Maintains VWM = 38.1V margin below 47V nominal, ensuring no leakage-induced efficiency loss during normal operation. |
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 47V bidirectional rating, but 400W PPK (SMA package); lower surge capacity and smaller footprint | Preferred for space-constrained PCBs where 400W suffices; not suitable for ISO 7637-2 Pulse 1 compliance | Select when board area is critical and surge energy is ≤400W; verify clamping voltage (VC = 77.0V) remains within system tolerance |
| ON Semiconductor 1.5SMC47CA | Same 1500W rating and DO-214AB (SMC) package; higher thermal mass but larger footprint than DO-201 | Better thermal dissipation for repetitive surges; requires different pad layout and mounting clearance | Choose for high-duty-cycle environments or where SMC mechanical robustness is prioritized over axial lead compatibility |
Compared with 1.5KE47CA B0G, SMAJ47CA offers compact size at reduced surge capability, while 1.5SMC47CA provides identical power rating in a surface-mount package requiring layout redesign - making 1.5KE47CA B0G optimal for cost-sensitive, through-hole automotive modules needing AEC-Q101 validation and proven DO-201 reliability.
Availability
1.5KE47CA B0G is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, LED driver surge suppression, and power supply input stage protection requiring stable component supply and full traceability.
Supply support for 1.5KE47CA B0G 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, and rectifiers, with global distribution and AEC-Q101 certification capabilities.
The 1.5KE series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing rugged DO-201 packaging, ISO 7637-2 compliance, and extended temperature operation up to +175°C.
FAQ
What does the 'CA' suffix mean in 1.5KE47CA B0G?
The 'CA' suffix in 1.5KE47CA B0G indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities. This differs from unidirectional 'C' variants (e.g., 1.5KE47C), which require correct anode/cathode orientation. The 1.5KE47CA B0G has identical VBR (42.3–51.7V) and VC (67.8V) characteristics regardless of voltage polarity applied across its terminals.
Is 1.5KE47CA B0G AEC-Q101 qualified?
Yes, 1.5KE47CA B0G is AEC-Q101 qualified, as confirmed in Taiwan Semiconductor's O2104 datasheet. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (UHAST), validating its suitability for automotive under-hood and chassis applications where reliability under thermal and mechanical stress is critical.
What is the clamping voltage of 1.5KE47CA B0G at rated surge current?
The clamping voltage (VC) of 1.5KE47CA B0G is 67.8V at 23A peak impulse current (IPP), measured under the standard 10/1000μs double-exponential surge waveform. This value represents the maximum voltage imposed on protected circuitry during a full 1500W transient event and is a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
How does 1.5KE47CA B0G differ from the 'A' version (1.5KE47A)?
The 1.5KE47CA B0G is bidirectional with CA suffix, whereas 1.5KE47A is unidirectional with tighter VBR tolerance (44.7–49.4V vs. 42.3–51.7V for 1.5KE47CA B0G) and same VWM (40.2V). The 'A' variant also features lower temperature coefficient (0.101%/°C) and is intended for precision-clamp applications where forward conduction direction matters - unlike the polarity-agnostic 1.5KE47CA B0G.
What is the maximum working stand-off voltage (VWM) for 1.5KE47CA B0G?
The maximum working stand-off voltage (VWM) for 1.5KE47CA B0G is 38.1V, as specified in Taiwan Semiconductor's O2104 datasheet. This is the highest DC or RMS voltage the device can withstand continuously without exceeding 1μA leakage current - establishing a 10%–20% safety margin below the minimum breakdown voltage (42.3V) to prevent false triggering during normal operation.
1.5KE47CA B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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 B0G FAQ
1.How can I place an order for 1.5KE47CA B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CA B0G 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 B0G reliable?
The price and inventory of 1.5KE47CA B0G 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 B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE47CA B0G?
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4.How is shipping managed for 1.5KE47CA B0G?
1.5KE47CA B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47CA B0G 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 B0G?
For technical support, including 1.5KE47CA B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CA B0G requirements.
6.How does Aetrix verify that 1.5KE47CA B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CA B0G 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 B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE47CA B0G?
All 1.5KE47CA B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CA B0G, 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 B0G part is unused and in its original packaging.
Return procedure for 1.5KE47CA B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47CA B0G Tags
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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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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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