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Taiwan Semiconductor Corporation 1V5KE300CA
- Part No.:
- 1V5KE300CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE300CA.pdf
- Description:
- TVS DIODE 256VWM 414VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:3,858
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Product details
Overview
1V5KE300CA from Taiwan Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge clamping in power and signal lines. It features a 285–315 V breakdown voltage (VBR), 256 V reverse stand-off voltage (VRWM), 414 V maximum clamping voltage (VC) at 3.8 A peak pulse current, and 1500 W peak pulse power rating at 1 ms. It protects industrial power supplies and telecom interfaces against EFT and lightning-induced transients.
For engineers reviewing the 1V5KE300CA datasheet, 1V5KE300CA pinout, 1V5KE300CA application, or 1V5KE300CA equivalent, key selection criteria include its bi-directional clamping symmetry, low incremental surge resistance, sub-1 μA leakage above 256 V, RoHS/halogen-free compliance, and DO-201 mechanical robustness for high-reliability board-level surge protection.
Technical Context
The 1V5KE300CA operates as a bi-directional avalanche diode with symmetrical forward/reverse breakdown characteristics, enabling bidirectional transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 μA at VRWM = 256 V).
It delivers 1500 W peak pulse power (10/1000 µs waveform) with a clamping ratio (VC/VBR) of ~1.42, confirming effective voltage limiting under surge stress. Thermal design must account for 175 °C max junction temperature and 5 W steady-state power dissipation at 75 °C ambient with 0.375" lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 285 V / 315 V - Ensures reliable avalanche conduction onset across manufacturing lot and temperature range |
| VRWM | 256 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 414 V @ 3.8 A - Clamped voltage during 10/1000 µs surge; defines protected circuit's worst-case overvoltage |
| PPPM | 1500 W - Peak surge energy handling capacity per single 1 ms pulse |
| IR @ VRWM | <1 µA - Negligible standby power loss and minimal loading on upstream circuitry |
| TJ max | 175 °C - Enables operation in high-ambient environments such as enclosed power enclosures |
| Package | DO-201 - Industry-standard axial-leaded package with UL 94V-0 molding and tin-plated leads |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; for 1V5KE300CA (bi-directional), polarity marking is non-functional-both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction terminal | No functional polarity-either lead connects to protected line or ground; enables flexible PCB layout |
| Leads (anode & cathode) | Current path for surge conduction | Tin-plated, solderable per J-STD-002; supports wave/reflow; 0.090 g mass aids thermal mass management |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Stabilizes VBR tolerance (±5%) and improves long-term reliability under repeated surge stress |
| 1500 W peak pulse power (1 ms) | Withstands IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts) |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with global environmental regulations and enables use in green electronics manufacturing |
| Fast response time (<1 ps) | Clamps transients before downstream ICs experience damaging overvoltage |
Applications
| Industrial Power Supply Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: AC/DC front-end input stage of DIN-rail power supplies exposed to lightning-induced surges on 230 VAC mains. IC Role / Device Role / Timing Role: Primary surge clamp placed across L-N and L/N-PE, shunting >1 kA transients away from bridge rectifier and PFC controller. Use Value: Limits let-through voltage to ≤414 V, preventing dielectric breakdown in Y-capacitors and overvoltage failure in MOSFETs. | Use Scenario: T1/E1 interface cards in central office equipment subject to induced surges from adjacent power cables. IC Role / Device Role / Timing Role: Bi-directional TVS mounted differential across tip/ring pairs, referenced to chassis ground via low-inductance path. Use Value: Maintains signal integrity by clamping common-mode surges while preserving <1 pF capacitance at 1 MHz, avoiding data jitter. |
| Motor Drive DC Bus Protection | Smart Meter AC Input Protection |
Use Scenario: DC link between rectifier and inverter in HVAC variable-frequency drives, where IGBT switching induces repetitive dv/dt spikes. IC Role / Device Role / Timing Role: Parallel-mounted TVS absorbing commutation spikes and external surge coupling into the 300–400 V DC bus. Use Value: Withstands 1500 W pulses without parameter shift, ensuring consistent clamping over 10+ years of field operation. | Use Scenario: Revenue-grade smart meters installed in outdoor utility cabinets subjected to indirect lightning strikes. IC Role / Device Role / Timing Role: First-stage protector on AC input before metering IC and isolation transformer, rated for 10 kA (8/20 µs) per IEC 61000-4-5. Use Value: Survives ≥1000 surges at 414 V clamping level, meeting ANSI C12.31 and IEC 62053-21 long-term reliability requirements. |
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 SMAJ33CA | Lower PPPM (400 W), smaller SMA package (vs. DO-201), VRWM = 33 V, VC = 53.3 V @ 7.5 A | Targeted at low-voltage DC circuits (e.g., 24 V PLC I/O), not suitable for 256 V AC/DC systems | Select only if system VRWM ≤33 V and space-constrained; not a direct replacement for 1V5KE300CA |
| ON Semiconductor 1.5KE300CA | Identical electrical specs (VBR, VRWM, VC, PPPM), same DO-201 package, RoHS-compliant | Drop-in functional replacement with identical thermal and surge performance | Valid alternative when dual-sourcing required; verify date code and reel packaging compatibility |
Compared with Littelfuse SMAJ33CA and ON Semiconductor 1.5KE300CA, the 1V5KE300CA offers higher surge margin for 230 VAC systems, while the ON part provides seamless second-source assurance without layout or derating changes.
Availability
1V5KE300CA is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, motor drive DC buses, and smart meter AC inputs requiring stable component supply and long-lifecycle availability.
Supply support for 1V5KE300CA 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 manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and MOSFETs, with ISO 9001 and IATF 16949 certification.
The 1V5KExxCA series was engineered for high-reliability, high-energy surge suppression in industrial and infrastructure applications-prioritizing stable VBR, low leakage, and mechanical ruggedness over cost-optimized consumer-grade alternatives.
FAQ
What is the breakdown voltage tolerance for 1V5KE300CA?
The 1V5KE300CA has a breakdown voltage (VBR) range of 285 V to 315 V at 1 mA test current, representing a ±5% tolerance. This tight specification ensures consistent clamping behavior across production lots and temperature extremes from –55 °C to +175 °C, critical for predictable protection in safety-critical power systems.
Is 1V5KE300CA unidirectional or bidirectional?
The "CA" suffix in 1V5KE300CA explicitly denotes a bi-directional configuration. Unlike unidirectional variants (e.g., 1V5KE300A), the 1V5KE300CA conducts symmetrically in both polarities, making it ideal for AC line protection, differential signal lines, and any application where voltage transients can occur with either polarity relative to ground.
What is the maximum clamping voltage of 1V5KE300CA under surge conditions?
The 1V5KE300CA clamps to a maximum of 414 V when subjected to its rated peak pulse current of 3.8 A (10/1000 µs waveform). This VC value defines the upper voltage limit imposed on protected circuitry during a surge event and is guaranteed across all units per JEDEC test standards.
Does 1V5KE300CA meet RoHS and halogen-free requirements?
Yes, the 1V5KE300CA is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm-enabling use in environmentally regulated markets including EU, Japan, and North America.
What package type does 1V5KE300CA use, and what are its mechanical highlights?
The 1V5KE300CA uses the DO-201 axial package: UL 94V-0 rated epoxy body, pure tin-plated leads compliant with J-STD-002 solderability, and 0.090 g typical weight. Its standardized footprint allows manual or automated insertion, and the glass-passivated chip junction ensures mechanical stability under thermal cycling and vibration stress.
1V5KE300CA 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):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- 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-201AD
1V5KE300CA FAQ
1.How can I place an order for 1V5KE300CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE300CA 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 1V5KE300CA reliable?
The price and inventory of 1V5KE300CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE300CA is usually 5 days.
3.What payment methods are accepted for 1V5KE300CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE300CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE300CA?
1V5KE300CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE300CA 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 1V5KE300CA?
For technical support, including 1V5KE300CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE300CA requirements.
6.How does Aetrix verify that 1V5KE300CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE300CA 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 1V5KE300CA meets industry standards.
7.What is the process for return or replacement of 1V5KE300CA?
All 1V5KE300CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE300CA, 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 1V5KE300CA part is unused and in its original packaging.
Return procedure for 1V5KE300CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE300CA Tags
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