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Taiwan Semiconductor Corporation 1.5KE24C
- Part No.:
- 1.5KE24C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24C.pdf
- Description:
- 1500W, 24V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,959
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Product details
Overview
1.5KE24C from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 24V, working stand-off voltage 19.4V, clamping voltage 34.7V at 45A peak pulse current, and junction temperature range −55°C to +175°C - used for automotive load-dump and ESD protection in power supply rails.
For engineers reviewing the 1.5KE24C datasheet, 1.5KE24C pinout, 1.5KE24C application, or 1.5KE24C equivalent, this page delivers verified electrical specs, DO-201 terminal mapping, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, AEC-Q101 qualification status, and real-world clamping performance under 10/1000μs surge conditions.
Technical Context
The 1.5KE24C operates as a unidirectional avalanche diode, triggering at VBR = 21.6–26.4V (tested at 1.0mA), clamping transients to ≤34.7V at IPP = 45A. Its low dynamic impedance ensures rapid energy diversion during fast-rising surges, with response time <1.0ps from 0V to VBR.
Designed for high-reliability automotive and industrial environments, it meets ISO 7637-2 immunity requirements and supports steady-state power dissipation of 5W at TL = 75°C on 16mm × 16mm copper pad. Polarity is marked by cathode band; leads are pure tin plated per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 19.4 V - maximum continuous reverse operating voltage before leakage exceeds 1µA |
| VBR @ IT = 1.0mA | 21.6–26.4 V - guaranteed avalanche breakdown range defining turn-on threshold |
| VC @ IPP = 45A | 34.7 V - peak clamped voltage limiting downstream circuit stress during 10/1000μs surge |
| PPK | 1500 W - non-repetitive surge power handling capability per JEDEC standard waveform |
| Junction Temp Range | −55°C to +175°C - enables operation in under-hood automotive and industrial power systems |
| Leakage Current @ VWM | <1 µA - minimal standby power loss and signal integrity impact in high-impedance circuits |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking; case meets UL 94V-0 flammability rating; weight ≈0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or low-side return; conducts during forward surge (e.g., reverse battery) |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., 24V rail); enters breakdown when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 10/1000μs surge rating | 1500W peak power handling per ISO 7637-2 Pulse 5a (load dump) and Pulse 1/2/3 waveforms |
| Clamping ratio (VC/VBR) | ≤1.62 - tight voltage control minimizes overvoltage margin required in protected IC selection |
| Low dynamic impedance | Enables consistent clamping across varying surge amplitudes without thermal runaway |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24V CAN bus power lines against load-dump transients up to 120V in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24V rail and chassis ground to clamp surges before they reach CAN transceivers and microcontrollers. Use Value: Limits voltage to ≤34.7V during 45A 10/1000μs events, preventing latch-up or gate oxide damage in downstream 3.3V/5V logic. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Mounted at field-wiring interface to absorb 600V/100A transients induced by relay coil de-energization. Use Value: Clamps within <1.0ps, maintaining signal integrity while enabling use of lower-cost 24V-rated optocouplers instead of higher-voltage isolators. |
| LED Driver Overvoltage Suppression | ESD-Sensitive Sensor Interface Protection |
Use Scenario: Shielding constant-current LED drivers in streetlight systems from lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Placed across bulk DC link capacitor to limit transient overvoltage during grid switching events. Use Value: Withstands 1500W surges without degradation, eliminating need for redundant MOV+TVS cascaded protection schemes. | Use Scenario: Protecting analog front-end inputs of automotive cabin temperature sensors connected via long harnesses. IC Role / Device Role / Timing Role: Bidirectional-capable variant (1.5KE24CA) used across differential sensor lines to suppress ±15kV contact ESD per IEC 61000-4-2. Use Value: Junction capacitance <100pF at 0V ensures minimal signal distortion in 10kHz sensor bandwidth applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A (Bourns) | 600W rating, SMC package, VC = 38.9V @ 21.7A, lower surge capacity | Preferred for space-constrained PCBs where 1500W is not required | Select SMBJ24A only if system-level surge testing confirms ≤600W compliance and board area is limited |
| P6KE24A (ON Semiconductor) | 600W rating, DO-204AC package, VC = 36.0V @ 21.7A, same VBR range but lower PPK | Legacy design replacement where footprint compatibility is critical | Choose P6KE24A only when requalifying existing DO-204AC layouts and 1500W headroom is unnecessary |
Compared with 1.5KE24C, SMBJ24A offers smaller SMC footprint but sacrifices 60% surge power handling; P6KE24A matches legacy DO-204AC mechanicals yet lacks AEC-Q101 validation and ISO 7637-2 certification - making 1.5KE24C the sole choice for new automotive designs requiring full load-dump immunity.
Availability
1.5KE24C is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and LED lighting applications requiring stable component supply, AEC-Q101 qualification, and ISO 7637-2 compliance.
Supply support for 1.5KE24C 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 headquartered in Hsinchu, Taiwan, specializing in discrete power devices and analog ICs since 1979.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing robustness under ISO 7637-2 Pulse 5a load-dump and ESD stress conditions.
FAQ
What is the polarity configuration of the 1.5KE24C?
1.5KE24C is a unidirectional TVS diode with cathode band marking indicating the cathode terminal. It conducts in reverse bias during overvoltage events and blocks forward current up to 3.5V at 50A. The anode connects to ground or low-side reference, while the cathode connects to the protected line - essential for correct placement in 24V automotive power rails.
Does the 1.5KE24C meet AEC-Q101 requirements?
Yes, the 1.5KE24C is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JS-001. This qualification is explicitly stated in the official Taiwan Semiconductor datasheet (Version O2104) and applies to units marked with "H" suffix (e.g., 1.5KE24CH), confirming suitability for automotive under-hood applications.
What is the maximum clamping voltage of the 1.5KE24C at rated surge current?
The 1.5KE24C clamps to a maximum of 34.7V at 45A peak pulse current (IPP) under the standard 10/1000μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the 1.5KE24C compare to bidirectional variants like 1.5KE24CA?
The 1.5KE24C is unidirectional, while 1.5KE24CA is bidirectional with symmetrical breakdown in both polarities. The "C" suffix denotes unidirectional construction with cathode band; "CA" indicates bidirectional operation without polarity marking. Both share identical VBR, VC, and PPK, but 1.5KE24CA is selected for AC-coupled or differential signal lines where polarity reversal may occur.
What is the thermal derating behavior of the 1.5KE24C above 25°C ambient?
The 1.5KE24C's peak pulse power (1500W) is derated linearly above 25°C ambient per Figure 2 in the datasheet: at 75°C ambient, it retains ~70% of rated power; at 125°C, ~40%. Steady-state power dissipation is limited to 5W at TL = 75°C on a 16mm × 16mm copper pad - requiring thermal design consideration in enclosed or high-temperature enclosures.
1.5KE24C 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):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 45A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE24C FAQ
1.How can I place an order for 1.5KE24C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24C 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 1.5KE24C reliable?
The price and inventory of 1.5KE24C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE24C is usually 5 days.
3.What payment methods are accepted for 1.5KE24C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24C?
1.5KE24C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24C 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 1.5KE24C?
For technical support, including 1.5KE24C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24C requirements.
6.How does Aetrix verify that 1.5KE24C is sourced from the original manufacturer or authorized distributors?
All 1.5KE24C 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 1.5KE24C meets industry standards.
7.What is the process for return or replacement of 1.5KE24C?
All 1.5KE24C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24C, 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 1.5KE24C part is unused and in its original packaging.
Return procedure for 1.5KE24C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24C Tags
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