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Taiwan Semiconductor Corporation 1V5KE33CA
- Part No.:
- 1V5KE33CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE33CA.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,005
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Product details
Overview
1V5KE33CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with breakdown voltage 31.4–34.7 V at 1 mA, reverse stand-off voltage 28.2 V, clamping voltage 45.7 V at 33.0 A peak pulse current, and junction temperature range −55 °C to +175 °C. It protects power rails and I/O lines in industrial motor drives, PLC input modules, and AC/DC front-end circuits against ESD and lightning-induced surges.
For engineers reviewing the 1V5KE33CA datasheet, 1V5KE33CA pinout, 1V5KE33CA application, or 1V5KE33CA equivalent, key selection criteria include bidirectional clamping performance, 1 ms surge rating, DO-201 mechanical compatibility, low leakage (<5 µA at 28.2 V), and thermal derating above 75 °C ambient.
Technical Context
The 1V5KE33CA operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transients and stable clamping under repetitive 10/1000 µs waveform stress. Its bidirectional symmetry ensures identical VBR, VC, and IPPM in both polarities, eliminating polarity-dependent design constraints.
Designed for unclamped inductive switching and electrical fast transient (EFT) immunity per IEC 61000-4-4, it delivers 1500 W peak pulse power at Tp = 1 ms with incremental surge resistance <0.5 Ω - critical for limiting let-through energy during 30 A surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at IT = 1 mA - defines reliable avalanche initiation threshold across production lot |
| VRWM | 28.2 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPPM | 45.7 V at 33.0 A - clamped voltage during 1 ms surge; determines protected circuit's maximum overvoltage exposure |
| PPPM | 1500 W - peak pulse power handling at 1 ms; enables robust protection against lightning surges (IEC 61000-4-5 Level 4) |
| IR @ VRWM | <5 µA - ultra-low leakage ensures minimal standby power loss and signal integrity in high-impedance sensing paths |
| TJ Range | −55 °C to +175 °C - supports operation in under-hood automotive, industrial inverters, and outdoor telecom equipment |
Pinout & Package
Package: DO-201 axial-leaded case with pure tin-plated leads, UL 94V-0 molding compound, and cathode band marking for unidirectional variants (not applicable to bidirectional 1V5KE33CA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (negative polarity) | Conducts surge current when voltage at this terminal falls >VBR below cathode; symmetric with cathode in bidirectional mode |
| Cathode | Transient current sink (positive polarity) | Conducts surge current when voltage at this terminal rises >VBR above anode; functionally identical to anode due to CA suffix bidirectionality |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability and stable VBR under humidity and thermal cycling per JESD22-A101 |
| 1500 W peak pulse power (1 ms) | Withstands 4 kV/2 Ω combination wave surges without degradation per IEC 61000-4-5 |
| Bidirectional symmetry (CA suffix) | Eliminates need for polarity-aware PCB layout; same VBR, VC, and IPPM in both directions |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream MOSFETs, optocouplers, and microcontroller I/O pins |
Applications
| Industrial Motor Drives | PLC Digital Input Modules |
|---|---|
Use Scenario: Protection of gate driver supply rails against inductive kickback from IGBTs and MOSFETs during switching. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across DC bus or isolated gate supply to clamp spikes up to 1500 W. Use Value: Prevents gate oxide damage and false triggering by limiting voltage to ≤45.7 V during 33 A surge events. | Use Scenario: ESD and surge protection on 24 V digital input channels exposed to field wiring. IC Role / Device Role / Timing Role: Bidirectional TVS connected between input line and common, shunting transients before they reach optocoupler input. Use Value: Maintains signal integrity with <5 µA leakage at 28.2 V and withstands repeated 1 kV EFT bursts per IEC 61000-4-4. |
| AC/DC Power Supply Front-End | Outdoor Telecom Equipment |
Use Scenario: Line-to-line and line-to-ground surge suppression on rectified AC inputs prior to bulk capacitor. IC Role / Device Role / Timing Role: Primary surge clamp on bridge output, absorbing lightning-induced energy before it reaches filter inductors and controllers. Use Value: 1500 W rating handles 10/1000 µs surges up to 4 kV; DO-201 package fits standard 7.5 mm creepage spacing layouts. | Use Scenario: Protection of RS-485 communication ports in base station remote radio units subjected to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Bidirectional TVS on differential pair, referenced to local ground, clamping common-mode transients. Use Value: Symmetric clamping ensures equal protection on A and B lines; 175 °C max junction temperature supports sealed outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Lower PPPM (600 W), smaller SMB package, VC = 53.3 V at 11.3 A | Not suitable for 1500 W surge events; limited to lower-energy ESD and EFT | Select only if board space is constrained and surge threat level is ≤Level 3 IEC 61000-4-5 |
| 1N6283A | Same die family and specs; unidirectional variant (no CA suffix), requires polarity-aware placement | Cannot protect AC-coupled or floating signals without external biasing | Use only where polarity is fixed and cathode orientation can be guaranteed in assembly |
Compared with SMBJ33CA and 1N6283A, the 1V5KE33CA uniquely combines 1500 W surge capability, DO-201 mechanical robustness for high-vibration environments, and true bidirectional symmetry-making it optimal for industrial power electronics where layout flexibility and high-energy transient immunity are mandatory.
Availability
1V5KE33CA is available at Aetrix Electronics and suitable for industrial motor drives, PLC digital input modules, and AC/DC power supply front-end designs requiring stable component supply and long-term obsolescence management.
Supply support for 1V5KE33CA 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 ISO 9001 and IATF 16949 certified production.
The 1V5KE series was engineered specifically for high-reliability industrial surge protection, emphasizing glass-passivated junction stability, DO-201 mechanical ruggedness, and consistent bidirectional clamping across voltage grades.
FAQ
What is the clamping voltage of the 1V5KE33CA under a 1 ms surge?
The 1V5KE33CA clamps to 45.7 V at its rated peak pulse current of 33.0 A under a 1 ms exponential waveform (10/1000 µs). This value is measured per JEDEC standards and represents the maximum voltage seen by downstream circuitry during worst-case surge conditions. The 1V5KE33CA maintains this clamping performance across its full operating temperature range.
Is the 1V5KE33CA truly bidirectional, and how does that affect PCB layout?
Yes, the 1V5KE33CA is fully bidirectional due to its CA suffix designation, meaning its breakdown and clamping characteristics are identical in both polarities. This eliminates polarity marking requirements and allows placement without regard to anode/cathode orientation - simplifying assembly and enabling use in AC-coupled or floating signal paths where voltage polarity reverses.
What is the maximum reverse leakage current of the 1V5KE33CA at its rated stand-off voltage?
The 1V5KE33CA exhibits ≤5 µA reverse leakage current at its rated reverse stand-off voltage of 28.2 V and 25 °C ambient. This low leakage preserves signal integrity in high-impedance monitoring circuits and minimizes standby power loss in always-on systems - critical for battery-backed or energy-sensitive applications.
Can the 1V5KE33CA replace the 1N6283A in an existing design?
No - the 1V5KE33CA and 1N6283A are not direct replacements. While both share identical electrical specs, the 1N6283A is unidirectional and requires correct cathode orientation. Substituting the bidirectional 1V5KE33CA may work electrically but removes polarity dependency; however, validation of surge performance under actual system-level transients is required before implementation.
Does the 1V5KE33CA meet RoHS and halogen-free compliance requirements?
Yes, the 1V5KE33CA complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and its pure tin-plated leads are solderable per J-STD-002 - ensuring environmental compliance and process compatibility for lead-free reflow assembly.
1V5KE33CA 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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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
1V5KE33CA FAQ
1.How can I place an order for 1V5KE33CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE33CA 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 1V5KE33CA reliable?
The price and inventory of 1V5KE33CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE33CA is usually 5 days.
3.What payment methods are accepted for 1V5KE33CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE33CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE33CA?
1V5KE33CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE33CA 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 1V5KE33CA?
For technical support, including 1V5KE33CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE33CA requirements.
6.How does Aetrix verify that 1V5KE33CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE33CA 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 1V5KE33CA meets industry standards.
7.What is the process for return or replacement of 1V5KE33CA?
All 1V5KE33CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE33CA, 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 1V5KE33CA part is unused and in its original packaging.
Return procedure for 1V5KE33CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE33CA Tags
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