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Taiwan Semiconductor Corporation 1.5KE15C
- Part No.:
- 1.5KE15C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15C.pdf
- Description:
- 1500W, 15V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,440
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Product details
Overview
1.5KE15C from Taiwan Semiconductor is a unidirectional 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 fast response time <1.0ps - designed for automotive and industrial power rail protection against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE15C datasheet, 1.5KE15C pinout, 1.5KE15C application, or 1.5KE15C equivalent, this page delivers verified electrical parameters, mechanical packaging details, real-world use scenarios, and validated alternative parts for ESD, inductive switching, and electrical fast transient immunity design.
Technical Context
The 1.5KE15C operates as a unidirectional avalanche diode with precise VBR = 13.5–16.5V at 1.0mA test current, enabling reliable overvoltage clamping on DC power lines. Its low dynamic impedance and <1.0ps response ensure minimal voltage overshoot during sub-nanosecond transients.
It meets AEC-Q101 qualification and ISO 7637-2 immunity standards for automotive electronics, with junction temperature range –55°C to +175°C and UL 94V-0 molded case - supporting robust operation in under-hood and industrial control environments without derating below 75°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1mA | 13.5–16.5V - defines precise clamping onset threshold for 15V nominal systems |
| VWM | 12.1V - maximum continuous reverse voltage before leakage exceeds 1μA |
| VC @ IPP=71A | 22.0V - peak clamped voltage during 10/1000μs surge, limiting downstream stress |
| PPK | 1500W - single-pulse surge handling capability per JEDEC standard waveform |
| Junction Temp Range | –55°C to +175°C - enables deployment in engine control units and industrial motor drives |
| Response Time | <1.0ps - ensures clamping activation before nanosecond-scale ESD or lightning-induced edges propagate |
| Package | DO-201 - industry-standard axial leaded package with tin-plated leads, compatible with wave and reflow soldering |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy-molded body with cathode band marking. Cathode terminal is marked by a band; anode is unmarked lead. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Clamping output node | Connected to protected line; conducts during overvoltage to shunt surge current to ground |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or low-impedance return plane for effective transient diversion |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress conditions |
| 1500W 10/1000μs surge rating | Withstands high-energy load dump and inductive kick events without degradation |
| Clamping voltage ≤22.0V at 71A | Keeps protected IC supply rails within safe operating margin during worst-case transients |
| Leakage current <1μA @ 12.1V | Minimizes standby power loss and avoids false triggering in low-power sensor circuits |
| UL 94V-0 flammability rating | Ensures flame-retardant encapsulation for safety-critical automotive and industrial applications |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs from ISO 7637-2 Pulse 2a (load dump) and Pulse 5a (alternator surge). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and regulator input to clamp transients before LDO or DC-DC stage. Use Value: Limits voltage excursion to ≤22.0V, preventing damage to 24V-tolerant regulators and preserving system uptime. | Use Scenario: Shielding digital input channels of programmable logic controllers from inductive switching noise on 24V DC field wiring. IC Role / Device Role / Timing Role: TVS connected across input terminals to divert relay coil flyback energy away from optocoupler inputs. Use Value: Suppresses >1kV spikes with <1.0ps response, eliminating false triggering and extending input circuit lifetime. |
| LED Driver Overvoltage Clamp | ESD-Sensitive Sensor Interface |
Use Scenario: Safeguarding constant-current LED drivers in streetlight systems exposed to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Placed at primary-side DC bus to clamp rectified surges before buck controller IC. Use Value: Absorbs 1500W pulses without failure, maintaining driver functionality and avoiding costly field returns. | Use Scenario: Protecting I²C or analog sensor nodes (e.g., temperature, pressure) in factory automation from human-body-model ESD events. IC Role / Device Role / Timing Role: Bidirectional-capable variant used (1.5KE15CA), but 1.5KE15C serves same role in unidirectional bias configurations. Use Value: Clamps 8kV contact discharge to ≤22.0V within sub-picosecond, preventing latch-up or gate oxide rupture in CMOS front-end stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ15A | Same 15V nominal, DO-214AC (SMA) package, 400W rating, lower PPK than 1.5KE15C's 1500W | Suitable for space-constrained PCBs but requires parallel devices for equivalent surge capacity | Select when board area is critical and surge energy is ≤400W; not drop-in for 1500W requirements |
| ON Semiconductor 1.5SMC15 | DO-214AB (SMC) package, 1500W rating, VC = 24.4V @ 61.5A - higher clamping voltage than 1.5KE15C's 22.0V | Better thermal dissipation than DO-201 but less precise clamping for 12V rail protection | Choose when higher mounting reliability is needed; verify 24.4V clamping aligns with downstream IC tolerances |
Compared with SMAJ15A and 1.5SMC15, the 1.5KE15C delivers superior clamping precision (22.0V) and legacy DO-201 compatibility while maintaining full 1500W surge capability - making it optimal for cost-sensitive, high-reliability 12V automotive and industrial power interfaces where layout reuse matters.
Availability
1.5KE15C is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, LED driver surge suppression, and sensor interface ESD hardening requiring stable component supply across long production lifecycles.
Supply support for 1.5KE15C 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 AEC-Q101 certification capabilities.
The 1.5KE series was engineered specifically for high-energy transient suppression in automotive and industrial environments - prioritizing surge robustness, temperature stability, and standardized DO-201 compatibility over miniaturization.
FAQ
What is the clamping voltage of the 1.5KE15C under maximum rated surge current?
The 1.5KE15C has a maximum clamping voltage (VC) of 22.0V at 71A peak pulse current (IPP) under the standard 10/1000μs waveform. This value is measured per JEDEC test conditions and guarantees that downstream components see no more than 22.0V during a full 1500W transient event - critical for protecting 12V-rated regulators and microcontrollers. The 1.5KE15C maintains this performance across its full operating temperature range.
Is the 1.5KE15C unidirectional or bidirectional, and how is polarity identified?
1.5KE15C is a unidirectional TVS diode, intended for DC line protection where polarity is fixed. Polarity is identified by a cathode band on the DO-201 package - the banded lead is the cathode and must be connected toward the protected line side, while the unmarked lead (anode) connects to ground or return. Bidirectional variants carry "CA" suffix (e.g., 1.5KE15CA); the "C" in 1.5KE15C denotes compliance grade, not bidirectionality.
Does the 1.5KE15C meet automotive qualification standards?
Yes, the 1.5KE15C is AEC-Q101 qualified - confirmed in Taiwan Semiconductor's official documentation for the 1.5KE series. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥8kV), validating suitability for automotive powertrain, body control, and infotainment modules. Note: AEC-Q101 compliance applies to the base 1.5KE15C part; "H"-suffixed versions (e.g., 1.5KE15CH) denote enhanced screening but share identical electrical specs.
What is the maximum steady-state power dissipation for the 1.5KE15C?
The 1.5KE15C has a steady-state power dissipation (PD) of 5W when mounted on a 0.6" × 0.6" copper pad at lead temperature (TL) = 75°C. This rating applies only to continuous DC or low-frequency operation - not transient suppression. For surge events, the device relies on its 1500W peak pulse rating (PPK) with derating above 25°C ambient per Fig.2 in the datasheet. The 1.5KE15C is not intended for sustained power dissipation; its design purpose is single-event clamping.
How does the 1.5KE15C compare to the 1.5KE15A variant?
The 1.5KE15A offers tighter VBR tolerance: 14.3–15.8V vs. 13.5–16.5V for the 1.5KE15C. Both share identical package (DO-201), PPK (1500W), VC (22.0V/21.2V), and application scope. The "A" suffix indicates ±5% breakdown voltage binning, whereas standard 1.5KE15C is ±10%. Use 1.5KE15A where precise clamping threshold is required; otherwise, 1.5KE15C provides cost-effective performance for general-purpose 12V rail protection.
1.5KE15C 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 71A
- 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
1.5KE15C FAQ
1.How can I place an order for 1.5KE15C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15C 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 1.5KE15C reliable?
The price and inventory of 1.5KE15C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15C is usually 5 days.
3.What payment methods are accepted for 1.5KE15C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15C?
1.5KE15C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15C 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 1.5KE15C?
For technical support, including 1.5KE15C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15C requirements.
6.How does Aetrix verify that 1.5KE15C is sourced from the original manufacturer or authorized distributors?
All 1.5KE15C 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 1.5KE15C meets industry standards.
7.What is the process for return or replacement of 1.5KE15C?
All 1.5KE15C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15C, 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 1.5KE15C part is unused and in its original packaging.
Return procedure for 1.5KE15C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15C Tags
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