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Taiwan Semiconductor Corporation 1V5KE24CA
- Part No.:
- 1V5KE24CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE24CA.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,627
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Product details
Overview
1V5KE24CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode designed for high-energy surge clamping in power and signal lines. It features a breakdown voltage of 22.8–25.2 V at 1 mA, clamps to ≤33.2 V at 45.2 A peak pulse current, and operates within –55°C to +175°C junction temperature range. It is used in industrial power supplies to protect MOSFET gate drivers from inductive switching transients.
For engineers reviewing the 1V5KE24CA datasheet, 1V5KE24CA pinout, 1V5KE24CA application, or 1V5KE24CA equivalent, key selection criteria include its DO-201 package compatibility, bidirectional clamping symmetry, low clamping ratio (VC/VBR ≈ 1.34), and compliance with IEC 61000-4-4 EFT immunity requirements.
Technical Context
The 1V5KE24CA is a junction-passivated, silicon avalanche diode optimized for unidirectional or bidirectional transient suppression. Its glass-passivated chip ensures stable breakdown characteristics and low leakage (<1 µA above 20.5 V), while its 1 ms pulse rating supports IEC 61000-4-5 Level 4 surge testing (4 kV/2 Ω).
Designed for use in parallel with sensitive ICs or across DC bus rails, it delivers fast response time (<1 ns), low incremental surge resistance, and symmetrical clamping in both polarities - critical for protecting AC-coupled interfaces or full-bridge motor control circuits where polarity reversal occurs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - defines guaranteed clamping onset window under standardized test conditions |
| VRWM | 20.5 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤33.2 V at 45.2 A - peak clamped voltage during 1 ms 8/20 µs surge, limiting stress on downstream components |
| PPPM | 1500 W - peak pulse power handling per JEDEC standard, enabling robust protection against lightning-induced surges |
| IR @ VRWM | <1 µA - ultra-low leakage preserves system standby power and avoids false triggering |
| TJ max | +175 °C - extended thermal capability supports operation in enclosed industrial enclosures without derating |
| Package | DO-201 - industry-standard axial-leaded package with UL 94V-0 molding compound and tin-plated leads |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy-molded case with cathode band marking for unidirectional variants; for 1V5KE24CA (bidirectional), polarity is non-directional - both terminals are functionally identical and symmetrically rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no polarity dependency in bidirectional operation |
| Leads (Tin-plated) | Thermal and electrical interface | Supports J-STD-002 solderability and JESD201 Class 2 whisker resistance for long-term reliability |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter drift <±5% over 10 years at rated stress |
| 1500 W peak pulse power (1 ms) | Withstands 4 kV/2 Ω combination wave surges per IEC 61000-4-5 without degradation |
| Clamping voltage ratio VC/VBR ≈ 1.34 | Minimizes overvoltage margin required in protected circuit design, reducing need for oversized voltage margins |
| RoHS & halogen-free (IEC 61249-2-21) | Enables compliance with EU environmental directives and facilitates end-of-life recycling in industrial equipment |
| –55°C to +175°C operating range | Validates use in under-hood automotive modules or high-temperature industrial PLC backplanes |
Applications
| Industrial Motor Drives | AC-DC Power Supplies |
|---|---|
Use Scenario: Protection of IGBT gate driver inputs against turn-off voltage spikes caused by parasitic inductance in high-current switching loops. IC Role / Device Role: Bidirectional clamping device placed directly across gate-emitter terminals to limit dv/dt-induced overshoot. Use Value: Prevents gate oxide breakdown by clamping transients to ≤33.2 V, enabling reliable 20 V-rated gate drivers to operate safely at 24 V rail. | Use Scenario: Input-stage surge suppression on bulk DC bus lines subjected to load-dump or hot-swap events. IC Role / Device Role: Primary overvoltage clamp across +VIN and GND, absorbing energy before upstream fuse or controller IC fails. Use Value: Handles 1500 W pulses without failure, maintaining system uptime during 100 ms surges common in factory automation power distribution. |
| Programmable Logic Controllers | Smart Energy Meters |
Use Scenario: Protection of isolated RS-485 transceiver data lines against ESD and EFT coupling from adjacent relay actuation. IC Role / Device Role: Bidirectional TVS placed across differential pair (A/B) to shunt common-mode transients before receiver input stage. Use Value: Symmetrical clamping ensures equal protection regardless of transient polarity, meeting IEC 61000-4-2 Level 4 (15 kV air) and IEC 61000-4-4 Level 3 (2 kV) requirements. | Use Scenario: Surge protection on meter's mains voltage sensing input, exposed to utility-side lightning surges. IC Role / Device Role: First-line clamping element between potential transformer secondary and ADC front-end, limiting input to safe levels. Use Value: Low leakage (<1 µA) prevents measurement offset drift in precision 24-bit sigma-delta ADCs, preserving meter accuracy class. |
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 SMAJ24CA | Same DO-214AC package; slightly higher VRWM (20.8 V vs. 20.5 V); lower PPPM (400 W) | Not suitable for 1500 W surge events; limited to low-energy ESD/EFT only | Select only when space-constrained PCB layout requires surface-mount and surge energy is <400 W |
| ON Semiconductor 1.5KE24CA | Identical electrical specs and DO-201 package; same VBR, VC, and PPPM | Direct functional replacement with validated qualification for industrial temperature cycling and humidity testing | Preferred for dual-sourcing in high-reliability programs requiring second-source assurance |
Compared with SMAJ24CA and 1.5KE24CA, the 1V5KE24CA offers identical surge performance to 1.5KE24CA but with Taiwan Semiconductor's extended lifetime qualification and tighter VBR distribution (±5% vs. ±10%), making it preferable for designs targeting >10-year field life without derating.
Availability
1V5KE24CA is available at Aetrix Electronics and suitable for industrial motor drives, AC-DC power supplies, and programmable logic controllers requiring stable component supply and long-term obsolescence management.
Supply support for 1V5KE24CA 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in high-reliability protection devices and power management components.
The 1V5KE24CA belongs to TSC's 1.5KE family of high-power TVS diodes, engineered specifically for industrial-grade surge immunity in harsh environments where extended temperature operation and long-term parameter stability are mandatory.
FAQ
What is the breakdown voltage range of the 1V5KE24CA?
The 1V5KE24CA has a specified breakdown voltage (VBR) range of 22.8 V to 25.2 V at a test current of 1 mA, measured per JEDEC standards. This range reflects manufacturing tolerance and ensures consistent clamping behavior across production lots. The 1V5KE24CA maintains this specification under ambient temperatures from –55°C to +125°C, with minimal drift up to its maximum junction temperature of +175°C.
Is the 1V5KE24CA unidirectional or bidirectional?
The 1V5KE24CA is a bidirectional TVS diode, indicated by the "CA" suffix. It provides symmetrical clamping in both polarities, with identical VBR, VC, and IPPM ratings for positive and negative transients. Unlike unidirectional variants (e.g., 1V5KE24A), the 1V5KE24CA has no cathode marking and functions identically regardless of terminal orientation in the circuit.
What package type does the 1V5KE24CA use?
The 1V5KE24CA uses the DO-201 axial-leaded package, featuring a cylindrical epoxy body, tin-plated leads compliant with J-STD-002, and UL 94V-0 flammability rating. Its mechanical dimensions conform to JEDEC DO-201 standards, enabling drop-in compatibility with legacy through-hole TVS footprints and automated insertion equipment.
How does the clamping voltage of the 1V5KE24CA compare to its breakdown voltage?
The 1V5KE24CA clamps to ≤33.2 V at its rated peak pulse current of 45.2 A, yielding a clamping ratio (VC/VBR) of approximately 1.34. This ratio is derived from its 22.8–25.2 V VBR range and confirms tight avalanche control. The 1V5KE24CA achieves this with low incremental surge resistance, minimizing voltage overshoot during fast-rising transients.
Does the 1V5KE24CA meet RoHS and halogen-free requirements?
Yes, the 1V5KE24CA 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. These attributes are verified in TSC's material declarations and support compliance for CE-marked industrial equipment and export to EU markets.
1V5KE24CA 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45.2A
- 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
1V5KE24CA FAQ
1.How can I place an order for 1V5KE24CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE24CA 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 1V5KE24CA reliable?
The price and inventory of 1V5KE24CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE24CA is usually 5 days.
3.What payment methods are accepted for 1V5KE24CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE24CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE24CA?
1V5KE24CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE24CA 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 1V5KE24CA?
For technical support, including 1V5KE24CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE24CA requirements.
6.How does Aetrix verify that 1V5KE24CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE24CA 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 1V5KE24CA meets industry standards.
7.What is the process for return or replacement of 1V5KE24CA?
All 1V5KE24CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE24CA, 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 1V5KE24CA part is unused and in its original packaging.
Return procedure for 1V5KE24CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE24CA Tags
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