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Taiwan Semiconductor Corporation 1.5KE16CA
- Part No.:
- 1.5KE16CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE16CA.pdf
- Description:
- TVS 1500W 16V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:8,034
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Product details
Overview
1.5KE16CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge protection in automotive and industrial power rails. It features a nominal breakdown voltage of 16V, clamping voltage of 22.5V at 70A peak impulse current, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements.
For engineers reviewing the 1.5KE16CA datasheet, 1.5KE16CA pinout, 1.5KE16CA application, or 1.5KE16CA equivalent, this TVS diode is selected for robust ESD and inductive switching transient suppression where low clamping voltage, fast response (<5.0ns), and AEC-Q101 qualification are critical.
Technical Context
The 1.5KE16CA operates as a bidirectional avalanche diode with symmetrical breakdown characteristics in both polarities, enabling protection of AC-coupled or floating signal/power lines without polarity sensitivity. Its 1500W peak pulse power rating is specified at the standard 10/1000μs waveform, and it maintains stable clamping performance across -55°C to +175°C junction temperature range.
It exhibits low dynamic impedance and <1μA maximum leakage above 10V working stand-off voltage (VWM = 13.6V), ensuring minimal system loading during normal operation. The device is halogen-free per IEC 61249-2-21 and RoHS compliant, with pure tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 15.2V / 16.8V at 1.0mA test current - defines reliable avalanche initiation threshold under transient stress |
| VWM | 13.6V - maximum continuous operating voltage before significant leakage begins |
| VC @ IPP | 22.5V at 70A peak impulse current - clamping voltage limiting downstream component stress during surge |
| PPK | 1500W - peak surge energy handling capability per 10/1000μs waveform, derated above 25°C ambient |
| TJ max | +175°C - maximum junction temperature enabling use in under-hood automotive environments |
| Response time | <5.0ns (bidirectional) - ensures suppression activation before transient energy damages sensitive ICs |
| 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; 1.5KE16CA is bidirectional and marked without polarity indicator. Leads are pure tin-plated, compliant with J-STD-002 solderability, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional polarity - either terminal serves as anode or cathode depending on transient polarity |
| Lead 1 / Lead 2 | Current path terminals | Direct connection to protected line and ground/reference; no internal biasing or control logic |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per stress test plan |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) waveforms |
| Low clamping ratio (VC/VBR) | 1.49 (22.5V / 15.2V) - minimizes overvoltage stress on protected ICs during surge events |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and end-of-life compliance |
| Fast bidirectional response | <5.0ns turn-on - activates before most microcontroller I/O or power supply input stages can be damaged |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump and alternator ripple in passenger vehicles. IC Role / Device Role / Timing Role: Primary surge shunt device placed at power entry point before DC-DC converters and MCU power supplies. Use Value: Clamps 10/1000μs transients to ≤22.5V, preventing latch-up or gate oxide damage in downstream 3.3V/5V regulators and microcontrollers. |
Use Scenario: 4–20mA current loop transmitters interfacing with PLC analog inputs in factory automation. IC Role / Device Role / Timing Role: Bidirectional line protector on signal pair, absorbing EFT bursts and field-induced surges without polarity concern. Use Value: Symmetrical clamping ensures protection regardless of transient polarity, eliminating need for dual-diode arrangements or polarity-aware layout. |
| LED Driver Output Protection | Motor Control Board Input Protection |
Use Scenario: Constant-current LED drivers powering exterior lighting subjected to ISO 7637-2 Pulse 2b (battery disconnect) events. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output terminals to clamp inductive kickback from long wiring harnesses. Use Value: 1500W rating handles high-energy flyback pulses; DO-201 package allows direct PCB mounting near connector interface. |
Use Scenario: H-bridge motor driver boards receiving 24V DC input in robotics and HVAC actuators. IC Role / Device Role / Timing Role: Input-stage surge limiter protecting gate drivers and current sense amplifiers from inductive switching spikes. Use Value: VWM = 13.6V permits safe operation with 24V nominal rail while providing margin against ripple and brownout conditions. |
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 SMAJ16CA | Same DO-214AC (SMA) package; lower PPK = 400W; VC = 26.0V @ 15.4A | Lower surge capacity limits use to sub-100A transients; unsuitable for ISO 7637-2 Pulse 1 | Select when board space constraints require surface-mount and surge energy is ≤400W |
| ON Semiconductor 1.5SMC16CA | DO-214AB (SMC) package; PPK = 1500W; VC = 26.0V @ 57.7A; higher clamping voltage than 1.5KE16CA | Same energy rating but 15.6% higher clamping voltage reduces protection margin for 3.3V/5V systems | Select when SMC footprint is preferred and clamping voltage margin allows 26.0V peak |
Compared with SMAJ16CA and 1.5SMC16CA, the 1.5KE16CA delivers superior protection margin (22.5V clamping) in the same 1500W class while retaining through-hole DO-201 reliability-critical for high-vibration automotive and industrial power entry designs.
Availability
1.5KE16CA is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and LED lighting systems requiring stable component supply and AEC-Q101-qualified surge protection.
Supply support for 1.5KE16CA 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 global distribution and AEC-Q101 certification capability.
The 1.5KE series was developed specifically for high-reliability automotive and industrial transient suppression, emphasizing robustness in harsh thermal and electrical environments with full ISO 7637-2 compliance.
FAQ
What is the clamping voltage of the 1.5KE16CA at its rated peak impulse current?
The 1.5KE16CA has a maximum clamping voltage (VC) of 22.5V at 70A peak impulse current (IPP), measured under the standard 10/1000μs double-exponential surge waveform. This value ensures protected downstream components experience no more than 22.5V during worst-case transient events, directly supporting 24V system designs with adequate safety margin.
Is the 1.5KE16CA unidirectional or bidirectional, and how is polarity indicated?
The 1.5KE16CA is a bidirectional TVS diode, meaning it provides symmetrical surge protection in both voltage polarities. Unlike unidirectional variants (e.g., 1.5KE16A), it carries no cathode band marking-its DO-201 package is unpolarized, allowing installation without orientation concerns in AC or floating circuits.
Does the 1.5KE16CA meet automotive qualification standards?
Yes, the 1.5KE16CA is AEC-Q101 qualified, as confirmed by Taiwan Semiconductor's O2104 datasheet revision. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock-validating its suitability for under-hood and chassis-mounted automotive applications.
What is the working stand-off voltage (VWM) of the 1.5KE16CA, and why does it matter?
The 1.5KE16CA has a working stand-off voltage (VWM) of 13.6V, which is the maximum continuous DC or RMS voltage the device can withstand without entering avalanche conduction. This parameter ensures minimal leakage (<1μA) during normal 12V system operation while preserving headroom for ripple and tolerance before clamping initiates.
How does the 1.5KE16CA compare to the 1.5KE16A variant?
The 1.5KE16CA is bidirectional with symmetrical breakdown, whereas the 1.5KE16A is unidirectional and marked with a cathode band. Their key electrical specs differ: 1.5KE16CA has VBR = 15.2–16.8V and VC = 22.5V @ 70A, while 1.5KE16A has VBR = 15.2–16.8V but VC = 23.5V @ 67A. The CA version is preferred for AC-coupled or polarity-agnostic protection.
1.5KE16CA 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 70A
- 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
1.5KE16CA FAQ
1.How can I place an order for 1.5KE16CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE16CA 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 1.5KE16CA reliable?
The price and inventory of 1.5KE16CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE16CA is usually 5 days.
3.What payment methods are accepted for 1.5KE16CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE16CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE16CA?
1.5KE16CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE16CA 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 1.5KE16CA?
For technical support, including 1.5KE16CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE16CA requirements.
6.How does Aetrix verify that 1.5KE16CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE16CA 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 1.5KE16CA meets industry standards.
7.What is the process for return or replacement of 1.5KE16CA?
All 1.5KE16CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE16CA, 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 1.5KE16CA part is unused and in its original packaging.
Return procedure for 1.5KE16CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE16CA Tags
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