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Taiwan Semiconductor Corporation 1.5KE400CA
- Part No.:
- 1.5KE400CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE400CA.pdf
- Description:
- TVS DIODE 342VWM 548VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,830
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Product details
Overview
1.5KE400CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge protection in automotive and industrial power rails. It features a nominal breakdown voltage of 400 V, clamping voltage of 574 V at 2.7 A peak impulse current, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements.
For engineers reviewing the 1.5KE400CA datasheet, 1.5KE400CA pinout, 1.5KE400CA application, or 1.5KE400CA equivalent, key selection criteria include its bidirectional polarity, 400 V standoff rating, 574 V clamping performance under 10/1000 µs waveform, low leakage (<1 µA above 324 V), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The 1.5KE400CA operates as a voltage-clamped crowbar device that remains non-conductive below its 324 V working stand-off voltage (VWM) and rapidly avalanches above its 360–440 V breakdown range (VBR) to divert transients. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating need for orientation during PCB placement.
It delivers 1500 W peak pulse power per 10/1000 µs waveform with <1.0 ps response time for unidirectional variants and 5.0 ns for bidirectional types like the 1.5KE400CA. Junction temperature range spans −55 °C to +175 °C, supporting operation in under-hood automotive environments and industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 324 V - Maximum continuous DC or RMS voltage the device blocks without conduction. |
| VBR min/max | 360 V / 440 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold tolerance. |
| VC @ IPP | 574 V at 2.7 A - Clamping voltage during 10/1000 µs surge; determines maximum voltage seen by protected circuitry. |
| PPK | 1500 W - Peak surge power handling capability; enables protection against ISO 7637-2 Pulse 5a (load dump). |
| ID @ VWM | <1 µA - Low leakage ensures minimal standby power loss and no false triggering in high-impedance circuits. |
| TJ max | +175 °C - Enables reliable operation in high-temperature automotive engine compartments and industrial enclosures. |
| Polarity | Bidirectional - Symmetrical clamping in both directions; marked with cathode band but functionally non-polarized. |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with pure tin-plated leads, UL 94V-0 molding compound, and 0.090 g mass. Compliant with JESD 201 Class 2 whisker resistance and J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (axial) | Surge current path | Leads are electrically symmetric; cathode band indicates marking convention only-no functional polarity in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring extended temperature and reliability compliance. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) immunity standards. |
| Low dynamic impedance | Enables tight clamping voltage window (574 V at 2.7 A), minimizing overvoltage stress on downstream MOSFETs or microcontrollers. |
| Fast response time | 5.0 ns turn-on latency ensures suppression before sensitive ICs experience damaging overvoltage events. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive, supporting environmentally compliant manufacturing and end-of-life recycling. |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input Protection |
|---|---|
Use Scenario: Protecting 24 V/48 V vehicle battery lines from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across input rail to shunt surges >324 V before reaching DC-DC converters or ECUs. Use Value: Limits rail voltage to ≤574 V during 1500 W transients, preventing damage to 60 V-rated power MOSFETs and PMICs. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives against switching surges from inductive loads. IC Role / Device Role / Timing Role: Standoff protector on 24–48 V DC input stage, activated only during >324 V transients with sub-5 ns response. Use Value: Maintains system uptime by absorbing repetitive 10/1000 µs surges up to 2.7 A without degradation or thermal runaway. |
| LED Streetlight Driver Protection | Telecom Power Supply Surge Suppression |
Use Scenario: Shielding constant-current LED drivers from lightning-induced surges on outdoor AC/DC front-ends. IC Role / Device Role / Timing Role: Primary-level TVS on bulk DC bus (e.g., 375 V output of PFC stage) to clamp line-to-ground transients. Use Value: Withstands 400 V nominal standoff and clamps to 574 V, preserving IGBT gate drivers and current-sense amplifiers rated for 600 V. |
Use Scenario: Securing 48 V telecom rectifier outputs against induced surges from nearby power cables or EFT events. IC Role / Device Role / Timing Role: Secondary-side TVS on -48 V distribution rail, leveraging bidirectional symmetry for common-mode and differential-mode suppression. Use Value: Delivers 1500 W surge rating with <1 µA leakage at 324 V, ensuring no impact on standby current budgets in always-on systems. |
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 SMAJ400A | DO-214AC (SMA) package; 400 V VWM; 593 V VC @ 2.5 A; 400 W rating. | Lower power rating limits use to lower-energy transients; surface-mount only. | Select when board space is constrained and surge energy is ≤400 W (e.g., secondary-side signal lines). |
| ON Semiconductor 1.5SMC400CA | DO-214AB (SMC) package; same 400 V VWM and bidirectional configuration; 574 V VC @ 2.7 A; 1500 W rating. | Same clamping performance but SMC offers higher thermal mass and easier manual rework than DO-201. | Prefer for new designs needing improved thermal dissipation or compatibility with existing SMC footprint libraries. |
Compared with 1.5KE400CA, SMAJ400A offers smaller size but reduced surge capacity, while 1.5SMC400CA matches electrical specs exactly but uses a larger, more thermally robust SMC package-making it suitable for higher ambient temperature or repeated surge environments where DO-201 lead thermal resistance may limit lifetime.
Availability
1.5KE400CA is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC power inputs, and outdoor LED driver protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE400CA 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 validation capabilities.
The 1.5KE series was developed specifically for high-reliability transient suppression in automotive and industrial power systems, emphasizing robustness under ISO 7637-2 stress conditions and extended temperature operation.
FAQ
What does the 'CA' suffix indicate in 1.5KE400CA?
The 'CA' suffix in 1.5KE400CA denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., 1.5KE400A), the 1.5KE400CA has no functional anode/cathode distinction-its clamping behavior is identical in either polarity, simplifying layout and eliminating orientation concerns during assembly.
How does 1.5KE400CA meet ISO 7637-2 requirements?
The 1.5KE400CA meets ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection and load dump), and Pulse 3a/3b (capacitive coupling) due to its 1500 W peak power rating, 574 V clamping voltage at 2.7 A, and fast 5.0 ns response time. Its 324 V working stand-off voltage ensures compatibility with 24 V and 48 V automotive and industrial systems while maintaining margin against normal operating transients.
Is 1.5KE400CA AEC-Q101 qualified?
Yes, the 1.5KE400CA is AEC-Q101 qualified-confirmed by Taiwan Semiconductor's documentation and ordering code suffix 'H' (e.g., 1.5KE400CAH). This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature reverse bias, validating its suitability for automotive powertrain and chassis applications where reliability under extreme environmental conditions is mandatory.
What is the maximum clamping voltage of 1.5KE400CA under surge conditions?
The maximum clamping voltage (VC) of 1.5KE400CA is 574 V at a peak impulse current (IPP) of 2.7 A, measured using the standard 10/1000 µs double-exponential surge waveform. This value represents the highest voltage the protected circuit will experience during a full-rated 1500 W transient event, making it critical for verifying voltage margins of downstream components such as MOSFETs, gate drivers, and voltage regulators.
Can 1.5KE400CA be used in place of a unidirectional TVS diode?
No-1.5KE400CA is strictly bidirectional and should not replace unidirectional TVS diodes (e.g., 1.5KE400A) in circuits requiring DC polarity-specific protection, such as DC power inputs with defined ground reference. While it functions safely in DC applications, its symmetrical IV curve lacks the forward-conduction path of unidirectional parts, so it cannot serve as a rectifier or provide forward-voltage drop protection. Always verify circuit topology before substitution.
1.5KE400CA 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):
- 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 FAQ
1.How can I place an order for 1.5KE400CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE400CA 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 reliable?
The price and inventory of 1.5KE400CA 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 is usually 5 days.
3.What payment methods are accepted for 1.5KE400CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE400CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE400CA?
1.5KE400CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE400CA 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?
For technical support, including 1.5KE400CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE400CA requirements.
6.How does Aetrix verify that 1.5KE400CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE400CA 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 meets industry standards.
7.What is the process for return or replacement of 1.5KE400CA?
All 1.5KE400CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE400CA, 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 part is unused and in its original packaging.
Return procedure for 1.5KE400CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE400CA Tags
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