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Taiwan Semiconductor Corporation 1.5KE400CA B0G
- Part No.:
- 1.5KE400CA B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE400CA B0G.pdf
- Description:
- TVS DIODE 342VWM 548VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,296
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Product details
Overview
1.5KE400CA B0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 400V nominal breakdown voltage (VBR min 360V, max 440V), 324V working stand-off voltage (VWM), and 574V maximum clamping voltage (VC) at 2.7A 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 1.5KE400CA B0G datasheet, 1.5KE400CA B0G pinout, 1.5KE400CA B0G application, or 1.5KE400CA B0G equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (B0G suffix denotes green, halogen-free, RoHS-compliant DO-201 packaging), low dynamic impedance, and sub-5ns response time for fast EFT/ESD immunity design.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance across positive and negative transients. Its junction temperature range spans −55°C to +175°C, and it meets ISO 7637-2 immunity requirements for automotive load-dump and inductive-switching surge protection.
The device uses silicon avalanche technology with pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Its DO-201 case achieves UL 94V-0 flammability rating and supports 5W steady-state dissipation at TL = 75°C on a 16mm × 16mm copper pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 324 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC/AC rail margin. |
| VBR (min/max) | 360 V / 440 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on under surge. |
| VC @ IPP | 574 V at 2.7 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum overvoltage stress. |
| PPK | 1500 W - Peak pulse power handling per single non-repetitive 10/1000 µs waveform; defines transient energy absorption capacity. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| Response time | <5 ns - Time from 0 V to VBR under bidirectional surge; critical for ESD/EFT immunity in high-speed systems. |
| Leakage ID | <1 µA @ VWM - Low standby current preserves battery life and avoids false triggering in always-on circuits. |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with cathode band marking for unidirectional variants; 1.5KE400CA B0G is bidirectional and marked without polarity band per datasheet note "Polarity: As marked" - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal accepts positive or negative transient; no orientation required during PCB placement. |
| Lead 1 / Lead 2 | Current conduction path | Leads carry full 2.7A peak impulse current; tin plating ensures reliable solder joint integrity per J-STD-002. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC performance in both directions - eliminates need for polarity-aware layout in DC bus protection. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - suitable for engine control and body electronics. |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) - meets OEM EMC requirements out-of-box. |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and end-of-life compliance. |
| Low dynamic impedance | Enables tight VC/VBR ratio (574 V / 360 V ≈ 1.59) - minimizes let-through voltage during fast surges. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 24V/48V battery-fed ECUs from load-dump transients up to ±120V during alternator regulation failure. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly across input terminals of power management ICs (e.g., TPS40400, MAX16910). Use Value: Limits voltage to ≤574V during 10/1000µs pulses, preventing gate oxide rupture in downstream MOSFETs and LDOs. | Use Scenario: Safeguarding PLC analog input modules connected to 4–20mA field transmitters exposed to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Front-end transient absorber ahead of signal conditioning amplifiers (e.g., INA199, AD8421) and ADCs. Use Value: Clamps EFT bursts (IEC 61000-4-4) to <600V within 5ns, preserving measurement accuracy and avoiding latch-up in precision front-ends. |
| LED Streetlight Drivers | Renewable Energy Charge Controllers |
Use Scenario: Shielding constant-current LED driver ICs (e.g., LM3409HV, MPQ4425) from lightning-induced surges on AC mains input lines. IC Role / Device Role / Timing Role: Secondary-level surge suppression after MOV-based primary protection, absorbing residual energy. Use Value: Handles 1500W peak power without degradation, maintaining clamping performance over >10,000 surge events per MIL-STD-883H Method 3015.8. | Use Scenario: Protecting solar charge controller inputs (12–48V PV strings) from induced surges due to nearby lightning strikes on rooftop arrays. IC Role / Device Role / Timing Role: Bidirectional clamp across PV+ and PV− terminals, compatible with floating-ground MPPT architectures. Use Value: Symmetrical 360–440V VBR ensures equal protection for both polarities of common-mode surge, eliminating need for dual unidirectional devices. |
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 SMAJ400CA | Same DO-214AC (SMA) package; 400V VBR, 574V VC, but rated at 400W PPK - significantly lower surge capacity. | Not suitable for 1500W ISO 7637-2 Pulse 1; limited to low-energy ESD/EFT only. | Select only if space-constrained SMT layout prohibits axial DO-201 and surge energy is ≤400W. |
| Vishay 1.5SMC400CA | DO-214AB (SMC) package; identical 400V VBR, 574V VC, 1500W PPK, and AEC-Q101 qualification - direct functional match. | Same automotive/industrial use cases; requires PCB footprint change from DO-201 to SMC. | Preferred when surface-mount assembly is mandatory and thermal pad area allows SMC mounting. |
Compared with 1.5KE400CA B0G, SMAJ400CA offers smaller size but sacrifices 73% surge energy handling, while 1.5SMC400CA matches all electrical specs and qualification but demands SMT rework - making 1.5KE400CA B0G optimal for through-hole, high-reliability, cost-sensitive designs.
Availability
1.5KE400CA B0G is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive inputs, LED streetlight drivers, and renewable energy charge controllers requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE400CA 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and thyristors for automotive, industrial, and consumer markets.
The 1.5KE series was designed specifically for high-energy transient suppression in harsh environments - emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood and factory-floor deployment.
FAQ
What does the "CA" suffix mean in 1.5KE400CA B0G?
The "CA" suffix in 1.5KE400CA B0G indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. This differs from "A" (unidirectional, cathode-banded) variants and enables polarity-agnostic placement in DC bus or floating-ground applications without orientation constraints.
Is 1.5KE400CA B0G AEC-Q101 qualified?
Yes, 1.5KE400CA B0G is AEC-Q101 qualified. The "B0G" ordering code confirms green, halogen-free, RoHS-compliant construction and full qualification to the AEC-Q101 stress test standard for discrete semiconductors - including HTGB, H3TRB, TC, and mechanical shock testing - making it suitable for automotive powertrain and chassis applications.
What is the clamping voltage of 1.5KE400CA B0G at its rated surge current?
The maximum clamping voltage (VC) of 1.5KE400CA B0G is 574 V at 2.7 A peak impulse current (IPP), measured under the standard 10/1000 µs double-exponential surge waveform. This value defines the highest voltage that will appear across protected circuitry during a full-rated transient event.
Can 1.5KE400CA B0G be used in place of a unidirectional TVS like 1.5KE400A?
No - 1.5KE400CA B0G is bidirectional and cannot replace unidirectional 1.5KE400A in circuits requiring forward conduction or DC bias blocking. While both share identical VBR and VC ratings, the unidirectional variant has a defined anode/cathode and conducts forward current, whereas 1.5KE400CA B0G blocks in both directions until breakdown occurs symmetrically.
What is the thermal derating behavior of 1.5KE400CA B0G above 25°C ambient?
1.5KE400CA B0G follows a linear derating curve: peak pulse power drops from 1500 W at 25°C to zero at 175°C junction temperature. Per Figure 2 in the datasheet, at 75°C ambient with no heat sink, usable PPK is ~1100 W; with heat sink, it remains near full rating up to ~125°C ambient - critical for under-hood automotive placement.
1.5KE400CA 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):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 2.8A
- 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
1.5KE400CA B0G FAQ
1.How can I place an order for 1.5KE400CA B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE400CA 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 1.5KE400CA B0G reliable?
The price and inventory of 1.5KE400CA B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE400CA B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE400CA B0G?
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4.How is shipping managed for 1.5KE400CA B0G?
1.5KE400CA B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE400CA 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 1.5KE400CA B0G?
For technical support, including 1.5KE400CA B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE400CA B0G requirements.
6.How does Aetrix verify that 1.5KE400CA B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE400CA 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 1.5KE400CA B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE400CA B0G?
All 1.5KE400CA B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE400CA 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 1.5KE400CA B0G part is unused and in its original packaging.
Return procedure for 1.5KE400CA B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE400CA B0G Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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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