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Taiwan Semiconductor Corporation 1.5KE15CA
- Part No.:
- 1.5KE15CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CA.pdf
- Description:
- TVS 1500W 15.1V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:3,111
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Product details
Overview
1.5KE15CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 15V, working stand-off voltage 12.1V, clamping voltage 22.0V at 71A peak pulse current, and junction temperature range −55°C to +175°C. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE15CA datasheet, 1.5KE15CA pinout, 1.5KE15CA application, or 1.5KE15CA equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, AEC-Q101 qualification status, thermal derating curves, and direct alternatives for ESD and load-dump protection design.
Technical Context
The 1.5KE15CA is a bipolar junction TVS diode optimized for fast transient suppression in automotive and industrial systems. Its bidirectional architecture enables symmetrical clamping in both polarities, with typical response time under 5.0ns and dynamic impedance low enough to limit voltage overshoot during 10/1000μs surges up to 1500W.
It meets ISO 7637-2 immunity requirements for vehicle electrical systems and supports operation across −55°C to +175°C junction temperature. The device uses pure tin-plated leads compliant with J-STD-002 and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 13.5V / 16.5V at 1.0mA test current - defines reliable conduction onset window for bidirectional clamping |
| VWM | 12.1V - maximum continuous reverse voltage before leakage exceeds 1µA, sets safe operating margin below VBR |
| VC @ IPP | 22.0V at 71A peak pulse - clamped voltage during worst-case 10/1000μs surge, critical for downstream IC survivability |
| PPK | 1500W - peak pulse power handling per JEDEC standard, enabling robust protection against load dump and EFT events |
| TJ max | +175°C - high-temperature capability allows placement near hot components like power MOSFETs or engine control units |
| Package | DO-201 - industry-standard axial leaded package with UL 94V-0 molding compound and 0.090g mass |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; 1.5KE15CA is bidirectional and marked without polarity band. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No fixed anode/cathode - terminals interchangeable; clamps equally on positive or negative transients |
| Lead 1 / Lead 2 | Current path for surge conduction | Both leads conduct surge current to ground or rail; no internal directionality - requires external PCB layout symmetry for balanced performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control, lighting, and body electronics |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect/load dump), and Pulse 3a/3b (EFT) waveforms |
| Low dynamic impedance | Enables tight clamping (22.0V at 71A) with minimal voltage overshoot during fast transients |
| Fast response time | <5.0ns turn-on for bidirectional events - faster than most microcontroller I/O response times |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Lighting Systems | Industrial Motor Drives |
|---|---|
Use Scenario: LED headlamp modules exposed to battery load dump and alternator ripple in 12V vehicle systems. IC Role / Device Role: Bidirectional TVS placed across LED driver input to clamp ±100V transients within 5ns. Use Value: Prevents catastrophic failure of buck controller ICs by limiting clamped voltage to 22.0V while absorbing 1500W surges. | Use Scenario: DC bus protection in 24V/48V brushless motor controllers subject to inductive kickback from H-bridge switching. IC Role / Device Role: TVS connected between power rail and ground to shunt flyback energy from motor windings. Use Value: Maintains system uptime by suppressing >100V spikes before they reach gate drivers or MCU analog inputs. |
| Automotive Body Control Modules | Industrial PLC I/O Protection |
Use Scenario: CAN/LIN bus power supply lines in door modules subjected to ESD and ISO 7637-2 Pulse 3b. IC Role / Device Role: Primary overvoltage clamp on 5V/3.3V regulator input feeding microcontroller and transceivers. Use Value: Ensures uninterrupted communication by holding rail voltage below 22.0V during 50ns EFT bursts without latch-up. | Use Scenario: Digital input protection on 24VDC PLC cards interfacing with field sensors prone to wiring-induced transients. IC Role / Device Role: Front-end TVS on optocoupler input side to prevent false triggering or damage from induced surges. Use Value: Extends field reliability by limiting leakage to <1µA at 12.1V and clamping 71A surges without degradation over 10,000 cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA (Bourns) | 600W rating, SMB package (surface-mount), lower IPP (43.3A), same VBR range (13.3–16.7V) | Preferred for space-constrained PCBs where reflow assembly is required; not rated for AEC-Q101 | Select when board area is limited and automotive qualification is not mandatory |
| 1.5SMC15CA (ON Semiconductor) | Same 1500W rating and DO-201 package, but VC = 24.4V at 61.5A; AEC-Q101 qualified only in "H" suffix variants | Requires verification of clamping margin for 3.3V/5V rail protection due to higher VC | Choose if sourcing flexibility across multiple franchises is prioritized and clamping voltage margin permits |
Compared with SMBJ15CA and 1.5SMC15CA, the 1.5KE15CA provides the lowest clamping voltage (22.0V) at its rated surge current, tighter VBR tolerance (±10% vs ±12.5%), and guaranteed AEC-Q101 qualification without suffix dependency - making it optimal for safety-critical automotive power rail protection.
Availability
1.5KE15CA is available at Aetrix Electronics and suitable for automotive lighting, industrial motor drives, body control modules, and PLC I/O protection requiring stable component supply across extended temperature and high-surge environments.
Supply support for 1.5KE15CA 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, TVS diodes, rectifiers, and automotive-qualified components.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood deployment.
FAQ
What does the "CA" suffix indicate in 1.5KE15CA?
The "CA" suffix in 1.5KE15CA denotes a bidirectional configuration - meaning the device functions identically in both polarities, with symmetric breakdown and clamping characteristics. Unlike unidirectional "A" variants, 1.5KE15CA has no cathode marking and is used where AC-coupled or reversible transient threats exist, such as across DC power rails or differential signal lines. This is confirmed in the datasheet's "Devices for Bipolar Applications" section.
Is 1.5KE15CA AEC-Q101 qualified?
Yes, 1.5KE15CA is AEC-Q101 qualified as stated in the FEATURES section of the official Taiwan Semiconductor datasheet (Version O2104). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for automotive under-hood applications. Note that AEC-Q101 status applies to the base 1.5KE15CA part - no additional "H" suffix is required, unlike some other series in the 1.5KE family.
What is the maximum clamping voltage of 1.5KE15CA and at what current is it specified?
The maximum clamping voltage (VC) of 1.5KE15CA is 22.0V, measured at a peak pulse current (IPP) of 71A using the standardized 10/1000μs double-exponential waveform. This value is specified in the ELECTRICAL SPECIFICATIONS table on page 2 of the Taiwan Semiconductor datasheet and represents the upper bound of voltage seen by protected circuitry during worst-case surge events.
How does 1.5KE15CA differ from 1.5KE15A?
The 1.5KE15CA is bidirectional, while 1.5KE15A is unidirectional. Their key differences include polarity marking (1.5KE15A has a cathode band; 1.5KE15CA does not), clamping symmetry (1.5KE15CA clamps equally on both polarities), and application scope (1.5KE15A is used for DC rail protection with defined polarity; 1.5KE15CA suits AC-coupled or floating nodes). Electrical parameters like VBR, VWM, and VC are otherwise closely matched per the datasheet tables.
What is the thermal derating behavior of 1.5KE15CA above 25°C ambient?
1.5KE15CA's peak pulse power (1500W) is derated linearly above 25°C ambient temperature, as shown in Figure 2 of the datasheet. At 75°C ambient, power capability drops to approximately 70% (1050W); at 125°C, it falls to ~40% (600W). This derating applies to non-repetitive pulses and assumes no heatsink - mounting on a 16mm × 16mm copper pad improves thermal performance but does not eliminate derating.
1.5KE15CA 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 74A
- 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-201
1.5KE15CA FAQ
1.How can I place an order for 1.5KE15CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CA 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 1.5KE15CA reliable?
The price and inventory of 1.5KE15CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15CA is usually 5 days.
3.What payment methods are accepted for 1.5KE15CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15CA?
1.5KE15CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CA 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 1.5KE15CA?
For technical support, including 1.5KE15CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CA requirements.
6.How does Aetrix verify that 1.5KE15CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CA 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 1.5KE15CA meets industry standards.
7.What is the process for return or replacement of 1.5KE15CA?
All 1.5KE15CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CA, 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 1.5KE15CA part is unused and in its original packaging.
Return procedure for 1.5KE15CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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