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Taiwan Semiconductor Corporation 1V5KE440CA
- Part No.:
- 1V5KE440CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE440CA.pdf
- Description:
- TVS DIODE 376VWM 602VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:3,138
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Product details
Overview
1V5KE440CA from Taiwan Semiconductor is a bi-directional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It delivers 1500W peak pulse power at 1.0ms, clamps transients up to 602V at 2.6A, and features a 376V reverse stand-off voltage with <1μA leakage above 10V. It is used in industrial power supplies and telecom line protection where robust ESD and lightning surge immunity is required.
For engineers reviewing the 1V5KE440CA datasheet, 1V5KE440CA pinout, 1V5KE440CA application, or 1V5KE440CA equivalent, key selection criteria include its DO-201 package, bidirectional clamping behavior, 418–462V breakdown range, low incremental surge resistance, and compliance with IEC 61249-2-21 halogen-free standards.
Technical Context
The 1V5KE440CA operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1ns) to transient events such as EFT, lightning-induced surges, and inductive switching spikes. Its bidirectional structure allows symmetrical clamping in AC-coupled or floating systems without polarity concerns.
It is rated for 175°C maximum junction temperature and supports repetitive surge handling per JEDEC JESD22-A114, with derating applied above 75°C ambient. The device meets RoHS and halogen-free requirements and is qualified per JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (1ms) | 1500W - sustains single high-energy surges typical of lightning or load dump without failure |
| Breakdown Voltage (VBR) | 418–462V - defines minimum voltage at which avalanche conduction begins under 1mA test current |
| Reverse Stand-off Voltage (VRWM) | 376V - maximum continuous DC or RMS voltage the device blocks before significant leakage |
| Clamping Voltage (VC @ IPPM) | 602V @ 2.6A - peak voltage seen by protected circuit during full-rated 1500W transient |
| Junction Temperature Range | −55°C to +175°C - enables operation in harsh industrial and outdoor environments |
| Package | DO-201 - axial-leaded through-hole package with UL 94V-0 molding compound and tin-plated leads |
| Leakage Current (IR @ VRWM) | <1μA - ensures minimal power loss and no interference with high-impedance sensing circuits |
Pinout & Package
Package: DO-201 - axial-lead, hermetically molded case with cathode band marking for unidirectional variants; for 1V5KE440CA (bi-directional), polarity marking is not functional but retained for mechanical compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Either lead serves as input/output - no polarity sensitivity; terminals interchangeable in PCB layout |
| Lead 1 / Lead 2 | Current path for surge conduction | Low-inductance axial path handles 200A peak forward surge (uni-directional rating); bidirectional operation uses both leads equally |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature, with reduced parameter drift vs. epoxy-passivated alternatives |
| 1500W peak pulse power (1ms) | Provides higher surge margin than 600W or 1000W TVS devices, reducing need for parallel staging |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD), improving system-level immunity |
| RoHS and halogen-free compliance | Meets IPC-J-STD-609 and IEC 61249-2-21 requirements for environmentally restricted electronics manufacturing |
| JEDEC-standard DO-201 outline | Enables drop-in replacement across legacy 1.5KE family designs and simplifies board-level qualification |
Applications
| Industrial Power Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting 48V DC power inputs in programmable logic controllers (PLCs) against induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Primary shunt clamping element placed between line and ground, absorbing energy before it reaches downstream DC/DC converters. Use Value: Clamps 1kV/1.2×50μs surge to ≤602V, limiting stress on 75V-rated input capacitors and preventing latch-up in controller ICs. | Use Scenario: Safeguarding RS-485 transceivers connected to outdoor field wiring exposed to EFT and surge coupling. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair (A/B) and shield, suppressing common-mode transients without distorting signal integrity. Use Value: Sub-1ns response prevents data corruption during 4kV EFT bursts; low capacitance (<50pF) avoids signal edge degradation at 10Mbps. |
| AC/DC Adapter Surge Suppression | Automotive Body Control Module Inputs |
Use Scenario: Secondary-side overvoltage protection in offline AC/DC adapters subjected to mains-borne surges per IEC 61000-4-5 Level 3. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor output, clamping post-rectifier transients before linear regulators or microcontrollers. Use Value: Withstands repeated 1500W pulses without parameter shift, extending adapter lifetime beyond 10,000 surge events. | Use Scenario: Protecting LIN bus inputs in body control modules from battery dump and load-switching transients in 12V vehicle systems. IC Role / Device Role / Timing Role: Bi-directional clamp between LIN line and chassis ground, compatible with floating ground architectures and reverse-battery tolerant designs. Use Value: 376V VRWM exceeds automotive battery swing (up to 16V), ensuring no conduction during normal operation while clamping 100V transients to safe levels. |
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; lower 400V VRWM and 648V VC @ 2.3A; 400W peak power | Lower power rating limits use to sub-1kV surge environments; unsuitable for IEC 61000-4-5 Level 4 | Select when space-constrained SMT layout is required and surge threat level is moderate (e.g., indoor consumer electronics) |
| ON Semiconductor 1.5KE440CA | Identical electrical specs (VRWM = 376V, VBR = 418–462V, VC = 602V), same DO-201 package, but manufactured under different process control and qualification | No functional difference in circuit performance; validated for identical industrial and telecom applications | Drop-in alternative with identical footprint, thermal profile, and surge capability - suitable for dual-sourcing programs |
Compared with SMAJ400CA and 1.5KE440CA, the 1V5KE440CA offers full 1500W surge capacity in the legacy DO-201 through-hole format, making it ideal for high-reliability industrial power entry designs where proven field history and mechanical robustness outweigh SMT density advantages.
Availability
1V5KE440CA is available at Aetrix Electronics and suitable for industrial power input protection, telecom line interface protection, AC/DC adapter surge suppression, and automotive body control module inputs requiring stable component supply and long-term obsolescence management.
Supply support for 1V5KE440CA 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 ISO 9001 and IATF 16949 certified facilities.
The 1V5KE series is part of TSC's high-power TVS portfolio engineered for industrial-grade surge immunity, emphasizing reliability under repetitive transient stress and compatibility with legacy 1.5KE footprints.
FAQ
What is the breakdown voltage tolerance for 1V5KE440CA?
The 1V5KE440CA has a specified breakdown voltage (VBR) range of 418V to 462V at 1mA test current, representing a ±5% tolerance around the nominal 440V rating. This tolerance is verified per JEDEC standard test conditions and applies to both directions due to its bi-directional construction.
Is 1V5KE440CA suitable for AC line protection?
Yes, 1V5KE440CA is suitable for AC line protection in applications such as 230VAC or 400VAC systems where peak line voltage remains below its 376V VRWM. Its bi-directional nature allows direct placement across live–neutral or live–ground, provided proper creepage/clearance and upstream current limiting are implemented.
Does 1V5KE440CA require a heatsink in continuous operation?
No, the 1V5KE440CA is not intended for continuous power dissipation. Its 5W steady-state rating at 75°C ambient assumes short-duration surges. For sustained DC bias, thermal design must ensure junction temperature stays ≤175°C using standard PCB copper area; no external heatsink is required under typical surge-only usage.
How does the clamping voltage of 1V5KE440CA compare to similar 440V TVS diodes?
The 1V5KE440CA clamps at 602V under 2.6A peak pulse current (10/1000μs waveform), matching industry-standard 1.5KE440CA performance. This value reflects low incremental resistance and is confirmed in TSC's published characteristics curves - critical for ensuring downstream components remain within safe operating voltage margins.
Can 1V5KE440CA be used in place of unidirectional 1V5KE440A?
No - 1V5KE440CA is bi-directional and lacks polarity marking for DC-blocking function; substituting it for unidirectional 1V5KE440A may cause unintended conduction in DC-coupled circuits. Use only where bidirectional clamping is explicitly required, such as AC signal lines or floating power rails.
1V5KE440CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 2.6A
- 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-201AD
1V5KE440CA FAQ
1.How can I place an order for 1V5KE440CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE440CA 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 1V5KE440CA reliable?
The price and inventory of 1V5KE440CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE440CA is usually 5 days.
3.What payment methods are accepted for 1V5KE440CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE440CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE440CA?
1V5KE440CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE440CA 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 1V5KE440CA?
For technical support, including 1V5KE440CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE440CA requirements.
6.How does Aetrix verify that 1V5KE440CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE440CA 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 1V5KE440CA meets industry standards.
7.What is the process for return or replacement of 1V5KE440CA?
All 1V5KE440CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE440CA, 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 1V5KE440CA part is unused and in its original packaging.
Return procedure for 1V5KE440CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE440CA Tags
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