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Taiwan Semiconductor Corporation 1.5KE16A
- Part No.:
- 1.5KE16A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE16A.pdf
- Description:
- TVS 1500W 16V 5% UNIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:2,597
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Product details
Overview
1.5KE16A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 16V, minimum VBR of 15.2V at 1.0mA test current, maximum clamping voltage of 22.5V at 70A peak pulse current, and DO-201 axial package - designed for automotive-grade inductive load protection and ESD immunity in power supply rails and signal lines.
For engineers reviewing the 1.5KE16A datasheet, 1.5KE16A pinout, 1.5KE16A application, or 1.5KE16A equivalent, key selection criteria include its 15.2–16.8V VBR range, 13.6V working stand-off voltage, <1μA leakage above 10V, AEC-Q101 qualification (H-suffix variant), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance - critical for robust automotive and industrial transient suppression.
Technical Context
The 1.5KE16A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its specified VBR (15.2–16.8V), then clamping transients to ≤22.5V at 70A (10/1000μs waveform). Its fast response time (<1.0ps from 0V to VBR) ensures protection before sensitive downstream circuitry sustains damage.
It features low dynamic impedance and thermal stability up to +175°C junction temperature, with derated peak power dissipation above 25°C ambient per JEDEC standard curves. The device is rated for 200A non-repetitive forward surge current (8.3ms half-sine) and exhibits ≤3.5V forward voltage at 50A - confirming suitability for high-energy inductive switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1.0mA | 15.2–16.8V - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 13.6V - maximum continuous reverse operating voltage without significant leakage |
| VC @ IPP = 70A | 22.5V - clamped voltage during 10/1000μs surge, limiting stress on protected ICs |
| PPK | 1500W - peak pulse power handling capability under standardized transient conditions |
| IPP max | 70A - maximum non-repetitive peak impulse current the device can safely divert |
| IR @ VWM | <1μA - ultra-low blocking leakage preserves system efficiency and battery life |
| Junction Temp (TJ) | −55°C to +175°C - enables operation in under-hood automotive and industrial environments |
Pinout & Package
Package: DO-201 axial leaded case with cathode band marking; RoHS-compliant, halogen-free molding compound; pure tin-plated leads solderable per J-STD-002; weight ≈0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward conduction terminal | Connected to ground or low-side reference in unidirectional TVS configuration |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line; conducts during overvoltage to clamp voltage to VC |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (H-suffix) | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| 1500W peak pulse power (10/1000μs) | Handles high-energy transients from load dump, inductive kickback, and EFT events without failure |
| Clamping voltage ≤22.5V at 70A | Ensures protected ICs experience voltage stress well below absolute maximum ratings |
| Response time <1.0ps | Activates faster than most semiconductor switching events, preventing first-cycle damage |
| ISO 7637-2 compliant (Pulse 1/2a/2b/3a/3b) | Meets automotive OEM requirements for conducted transient immunity on 12V/24V systems |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Suppressing load dump transients (up to 60V, 400ms) on 12V vehicle battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges before they reach LDOs and microcontrollers. Use Value: Prevents latch-up or permanent damage to 5V/3.3V logic supplies by limiting rail voltage to ≤22.5V during 70A transients. |
Use Scenario: Protecting 24V digital input modules from inductive switching noise generated by solenoids and contactors. IC Role / Device Role / Timing Role: Standoff protection device across input terminals to absorb repetitive 10/1000μs spikes induced by relay coil de-energization. Use Value: Maintains signal integrity and prevents false triggering in optocoupled inputs by holding voltage below 13.6V during normal operation and clamping to 22.5V during faults. |
| LED Driver Overvoltage Protection | ESD-Sensitive Sensor Interface |
Use Scenario: Safeguarding constant-current LED drivers against voltage reversals and surge coupling from adjacent high-power circuits. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-driver output to shunt reverse polarity and transient energy. Use Value: Enables driver survival during 1500W 10/1000μs surges while maintaining ≤1μA leakage to avoid standby current penalties. |
Use Scenario: Shielding automotive cabin sensors (e.g., ambient light, humidity) from ESD events per IEC 61000-4-2 (±8kV contact). IC Role / Device Role / Timing Role: Low-capacitance TVS placed at connector interface to divert ESD current before it reaches analog front-end amplifiers. Use Value: Provides sub-nanosecond response and <1μA leakage to preserve sensor accuracy and battery runtime without adding signal path capacitance. |
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 SMAJ16A | Same DO-214AC (SMA) package; lower PPK (400W); VC = 26.0V @ 15.7A | Lower surge rating limits use to consumer-grade or low-energy industrial signals | Select when space-constrained PCB layout requires surface-mount and surge energy is ≤400W |
| ON Semiconductor 1.5SMC16A | DO-214AB (SMC) package; identical 1500W rating; VC = 26.0V @ 57.7A; higher VWM (13.6V same) | Higher clamping voltage reduces margin for 3.3V/5V IC protection but supports wider board-level layout tolerances | Select when SMC footprint is preferred and clamping to 26.0V remains within protected IC's absolute max rating |
Compared with 1.5KE16A, SMAJ16A offers smaller size but significantly reduced surge capacity, while 1.5SMC16A matches power rating but clamps 3.5V higher - making 1.5KE16A optimal where DO-201 through-hole mounting, lowest possible clamping, and AEC-Q101 validation are required.
Availability
1.5KE16A is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and LED lighting applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified transient protection.
Supply support for 1.5KE16A 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, rectifiers, and MOSFETs for automotive, industrial, and computing markets.
The 1.5KE series was developed to deliver high-reliability, AEC-Q101-qualified transient suppression for 12V/24V automotive subsystems and ruggedized industrial equipment - emphasizing low clamping voltage, repeatable surge endurance, and extended temperature operation.
FAQ
What is the exact breakdown voltage range for 1.5KE16A?
The 1.5KE16A has a guaranteed breakdown voltage range of 15.2V to 16.8V at 1.0mA test current (IT), measured per JEDEC standard after 30ms square-wave pulse application. This tight tolerance ensures consistent triggering behavior across production lots and temperature extremes, critical for predictable protection in safety-critical automotive circuits.
Is 1.5KE16A unidirectional or bidirectional?
The 1.5KE16A is a unidirectional TVS diode, indicated by its "A" suffix and absence of "CA" designation. It conducts only in reverse bias (cathode positive) to clamp overvoltages, with forward voltage ≤3.5V at 50A. Bidirectional variants like 1.5KE16CA exist but are distinct part numbers with symmetrical clamping in both polarities.
Does 1.5KE16A meet AEC-Q101 qualification?
Yes - the 1.5KE16A is AEC-Q101 qualified when ordered with the "H" suffix (e.g., 1.5KE16AH), as confirmed in Taiwan Semiconductor's ordering information. Standard 1.5KE16A parts may not carry full AEC-Q101 certification unless explicitly marked; always verify the full order code and datasheet revision for automotive-grade validation.
What is the maximum clamping voltage of 1.5KE16A under surge conditions?
The 1.5KE16A clamps to a maximum of 22.5V at 70A peak pulse current (10/1000μs waveform), as specified in the Electrical Characteristics table. This value represents worst-case clamping performance across temperature and process variation, ensuring protected downstream components remain within safe operating voltage margins during standardized surge events.
Can 1.5KE16A be used in surface-mount designs?
No - the 1.5KE16A uses a DO-201 axial-leaded through-hole package and is not compatible with surface-mount assembly. For SMT equivalents, consider Taiwan Semiconductor's SMAJ16A (DO-214AC) or 1.5SMC16A (DO-214AB), which offer similar voltage ratings but differ in power rating, clamping voltage, and mechanical form factor.
1.5KE16A 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:
- 1
- Bidirectional Channels:
- -
- 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
1.5KE16A FAQ
1.How can I place an order for 1.5KE16A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE16A 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 1.5KE16A reliable?
The price and inventory of 1.5KE16A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE16A is usually 5 days.
3.What payment methods are accepted for 1.5KE16A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE16A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE16A?
1.5KE16A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE16A 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 1.5KE16A?
For technical support, including 1.5KE16A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE16A requirements.
6.How does Aetrix verify that 1.5KE16A is sourced from the original manufacturer or authorized distributors?
All 1.5KE16A 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 1.5KE16A meets industry standards.
7.What is the process for return or replacement of 1.5KE16A?
All 1.5KE16A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE16A, 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 1.5KE16A part is unused and in its original packaging.
Return procedure for 1.5KE16A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE16A Tags
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