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Taiwan Semiconductor Corporation 1.5KE43CA B0G
- Part No.:
- 1.5KE43CA B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE43CA B0G.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,662
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Product details
Overview
1.5KE43CA B0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) in DO-201 package, with nominal breakdown voltage 43V, working stand-off voltage 34.8V, clamping voltage 61.9V at 25A peak pulse current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the 1.5KE43CA B0G datasheet, 1.5KE43CA B0G pinout, 1.5KE43CA B0G application, or 1.5KE43CA B0G equivalent, this page delivers verified electrical specs, ISO 7637-2 compliance data, thermal derating curves, and real-world ESD/inductive load protection guidance - all specific to the 1.5KE43CA B0G variant.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance across positive and negative transients. Its 10/1000μs surge rating of 1500W and sub-5ns response time ensure robust protection against fast electrical fast transients (EFT) and ISO 7637-2 Pulse 1/2a/2b/3a/3b events.
Designed for high-reliability automotive and industrial systems, it features low dynamic impedance, <1μA leakage above 10V, and junction temperature range from –55°C to +175°C. The DO-201 package supports lead-free soldering per J-STD-002 and meets UL 94V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 38.7V / 47.3V @ IT = 1mA - defines reliable conduction onset under transient stress |
| VWM | 34.8V - maximum continuous DC or RMS voltage before leakage exceeds 1μA |
| VC @ IPP | 61.9V @ 25A - clamped voltage during 10/1000μs surge, limiting downstream IC stress |
| PPK | 1500W - peak pulse power handling capability per single non-repetitive event |
| Junction Temp | –55°C to +175°C - enables operation in under-hood automotive and industrial environments |
| Leakage Current | <1μA @ VWM - ensures minimal standby power loss and signal integrity in always-on circuits |
Pinout & Package
DO-201 axial-leaded package with cathode band marking for unidirectional variants; 1.5KE43CA B0G is bidirectional and marked with part-specific code (no polarity band). 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 transient conduction path | No fixed anode/cathode - identical clamping behavior for ±voltage surges |
| Lead 1 / Lead 2 | Transient current entry/exit terminals | Leads carry full 25A peak impulse current; require ≥0.375" copper pad for 5W steady-state dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) immunity requirements |
| Fast response time | Typically <5.0ns - limits voltage overshoot before clamping engages |
| Low dynamic impedance | Enables tight clamping window (VC – VBR = ~23V), reducing stress on protected ICs |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and body control modules from load dump and alternator ripple transients in 12V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across power rail upstream of LDOs and microcontrollers. Use Value: Limits rail voltage to ≤61.9V during 10/1000μs 1500W surges, preventing latch-up or oxide breakdown in 3.3V/5V logic. | Use Scenario: Safeguarding analog front-ends (e.g., pressure, temperature sensors) connected to long cables in factory automation cabinets. IC Role / Device Role / Timing Role: Parallel-connected TVS at sensor connector interface to divert induced EFT and lightning-coupled surges. Use Value: Sub-5ns response captures fast transients before they propagate into precision ADC inputs, preserving measurement accuracy. |
| LED Driver Input Stage Protection | Power Supply EMI Filter Clamp |
Use Scenario: Shielding constant-current LED drivers from inductive kickback when driving solenoids or relays on shared PCBs. IC Role / Device Role / Timing Role: Placed across input capacitor to clamp reverse-polarity and switching spikes before DC-DC controller ICs. Use Value: Withstands 200A IFSM surge (unidirectional mode) and clamps at 61.9V, avoiding driver shutdown or MOSFET avalanche failure. | Use Scenario: Stabilizing common-mode choke output in AC-DC adapters subjected to conducted EFT per IEC/EN 61000-4-4. IC Role / Device Role / Timing Role: Bidirectional clamp bridging primary-side Y-capacitor node to ground to suppress differential-mode surges. Use Value: 1500W surge rating absorbs repetitive 5kV EFT bursts without degradation, maintaining filter integrity over product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | 600W rating, SMC package (smaller footprint), lower VC = 69.4V @ 17.2A | Lower surge capacity; suited for space-constrained consumer electronics, not automotive under-hood | Select SMBJ43CA only if system-level surge energy is ≤600W and board space is critical. |
| 1.5SMC43CA | Same 1500W rating but SMC package; VBR = 38.7–47.3V, VC = 69.4V @ 21.7A | Higher clamping voltage (+7.5V) and surface-mount assembly - requires rework of through-hole layout | Choose 1.5SMC43CA only when migrating to SMT production and thermal management allows SMC's lower thermal resistance. |
Compared with SMBJ43CA and 1.5SMC43CA, the 1.5KE43CA B0G provides higher surge margin (1500W vs. 600W or matched 1500W), proven DO-201 mechanical robustness for vibration-prone environments, and direct AEC-Q101 qualification - making it the preferred choice for automotive power rail protection where reliability trumps miniaturization.
Availability
1.5KE43CA B0G is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED driver input stages, and AC-DC EMI filter clamping requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE43CA 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, rectifiers, and MOSFETs, 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 1.5KE43CA B0G?
The 'CA' suffix in 1.5KE43CA B0G indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional 'A' variants, 1.5KE43CA B0G has no cathode band marking and functions identically in either orientation, making it ideal for AC-coupled or floating signal line protection where polarity is undefined.
Is 1.5KE43CA B0G AEC-Q101 qualified?
Yes, 1.5KE43CA B0G is AEC-Q101 qualified. Per Taiwan Semiconductor's ordering information and specification sheet, the 'H' suffix denotes AEC-Q101 qualification, but the base 1.5KE43CA family - including 1.5KE43CA B0G - is explicitly listed as AEC-Q101 qualified in the FEATURES section. This qualification covers temperature cycling, high-temperature reverse bias, and ESD testing required for automotive under-hood applications.
What is the clamping voltage of 1.5KE43CA B0G at its rated surge current?
The clamping voltage of 1.5KE43CA B0G is 61.9V measured at 25A peak pulse current (IPP) under the standard 10/1000μs waveform. This value is specified in the Electrical Specifications table on page 2 of the Taiwan Semiconductor datasheet and represents the maximum voltage seen by downstream circuitry during a full-rated 1500W transient event.
Can 1.5KE43CA B0G be used in place of a unidirectional TVS like 1.5KE43A?
No - 1.5KE43CA B0G is not a drop-in replacement for unidirectional 1.5KE43A. While both share identical VBR and VC ratings, the 1.5KE43CA B0G lacks polarity marking and conducts in both directions, whereas 1.5KE43A requires correct anode/cathode orientation. Using 1.5KE43CA B0G in a unidirectional design may cause unintended conduction during normal forward bias, risking circuit malfunction or power rail collapse.
What is the maximum operating temperature for 1.5KE43CA B0G?
The maximum junction temperature for 1.5KE43CA B0G is +175°C, and the storage temperature range is –55°C to +175°C. This wide thermal envelope is confirmed in the Absolute Maximum Ratings table and supports deployment in engine control units, transmission modules, and other high-temperature automotive locations where ambient temperatures exceed 125°C.
1.5KE43CA B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 26A
- 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
1.5KE43CA B0G FAQ
1.How can I place an order for 1.5KE43CA B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE43CA 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 1.5KE43CA B0G reliable?
The price and inventory of 1.5KE43CA B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE43CA B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE43CA B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE43CA B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE43CA B0G?
1.5KE43CA B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE43CA 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 1.5KE43CA B0G?
For technical support, including 1.5KE43CA B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE43CA B0G requirements.
6.How does Aetrix verify that 1.5KE43CA B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE43CA 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 1.5KE43CA B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE43CA B0G?
All 1.5KE43CA B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE43CA 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 1.5KE43CA B0G part is unused and in its original packaging.
Return procedure for 1.5KE43CA B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE43CA B0G Tags
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