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Taiwan Semiconductor Corporation 1.5KE11C
- Part No.:
- 1.5KE11C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11C.pdf
- Description:
- 1500W, 11V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,916
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Product details
Overview
1.5KE11C from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 11V nominal breakdown voltage (VBR = 9.9–12.1V @ 1.0mA), 8.92V working stand-off voltage (VWM), and 16.2V maximum clamping voltage (VC @ IPP = 97A) for robust ESD and surge protection in automotive power rails and industrial control inputs.
For engineers reviewing the 1.5KE11C datasheet, 1.5KE11C pinout, 1.5KE11C application, or 1.5KE11C equivalent, this page delivers verified electrical parameters, DO-201 terminal polarity mapping, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance data, and real-world clamping performance under 10/1000μs transients - all critical for automotive-grade circuit hardening and board-level immunity design.
Technical Context
The 1.5KE11C operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (9.9–12.1V); it clamps transient energy within 1.0ps response time while maintaining low dynamic impedance to limit peak voltage to ≤16.2V at 97A surge current. Its junction temperature rating of −55°C to +175°C supports under-hood automotive deployment.
Designed for single-polarity DC line protection, it features pure tin-plated leads compliant with J-STD-002, meets JESD201 Class 2 whisker resistance, and uses UL 94V-0 molding compound. It is not rated for bidirectional use - the "C" suffix denotes unidirectional configuration per JEDEC standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT | 9.9–12.1V @ 1.0mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 8.92V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPP | 16.2V @ 97A - peak clamped voltage during 10/1000μs surge, limiting downstream IC stress |
| PPK | 1500W - peak pulse power handling capability per ISO 7637-2 Pulse 5a waveform |
| IPP | 97A - maximum non-repetitive peak impulse current at VC, defining surge survivability |
| Junction Temp | −55°C to +175°C - enables operation in engine control units and industrial motor drives |
| Leakage @ VWM | <1μA - ensures minimal standby power loss in always-on automotive circuits |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with cathode band marking; body length 5.2–5.7mm, diameter 2.7–3.2mm, lead spacing 10.0mm min., weight ≈0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional clamp configuration |
| Cathode (banded end) | Avalanche conduction terminal | Connected to protected line (e.g., 12V battery rail); conducts during reverse overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 1500W surge rating | Handles ISO 7637-2 Pulse 5a (load dump) without degradation in automotive 12V systems |
| <1.0ps response time | Clamps ESD transients faster than most microcontrollers can latch up, preventing logic upset |
| Low dynamic impedance | Ensures stable clamping voltage across wide current range (10A–100A), minimizing overshoot |
| AEC-Q101 qualified option | Available in "H" variant (e.g., 1.5KE11CH) for production automotive applications requiring qualification evidence |
| UL 94V-0 molding | Self-extinguishing encapsulant meets flame-retardancy requirements for enclosed vehicle modules |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and regulator input to clamp surges before LDO or MCU power pins. Use Value: Limits transient voltage to ≤16.2V, protecting 20V-rated regulators and preventing brownout resets in safety-critical ECUs. | Use Scenario: 4–20mA current loop input of PLC analog module subjected to field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on signal line, shunting transients to ground before precision op-amp input stage. Use Value: Maintains signal integrity by clamping fast transients (<1ns rise) without adding capacitance that would distort 1kHz+ sensor signals. |
| LED Lighting Driver Input Protection | DC Motor Control Board Surge Suppression |
Use Scenario: Input stage of constant-current LED driver in commercial streetlight, exposed to lightning-induced surges on AC/DC supply lines. IC Role / Device Role / Timing Role: First-line unidirectional TVS on DC bus (e.g., 24V output of rectifier), placed upstream of MOSFET switch and current sense resistor. Use Value: Absorbs 1500W pulses without failure, preserving driver efficiency and eliminating need for redundant MOV+TVS cascades. | Use Scenario: H-bridge gate driver power supply rail in robotic actuator, subject to back-EMF spikes during rapid direction reversal. IC Role / Device Role / Timing Role: Clamp device across VCC and GND of half-bridge driver IC to suppress inductive switching noise. Use Value: Prevents false triggering of internal undervoltage lockout (UVLO) by holding rail voltage above 8.92V during 100ns–1μs spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | 600W rating, SMC package, 10V VWM, 17V VC @ 34.6A | Lower power handling; suited for PCB space-constrained designs where 1500W is excessive | Select when footprint size and thermal mass are prioritized over extreme surge margin |
| 1N6272A | Same 11V nominal, tighter VBR tolerance (10.5–11.6V), identical DO-201 package and pinout | No functional difference; A-grade offers improved parametric consistency for high-yield production | Choose for tighter VBR binning in volume automotive builds requiring statistical process control |
Compared with SMBJ10A, the 1.5KE11C delivers >2.5× higher surge power and superior clamping ratio (VC/VBR = 1.47 vs. 1.7), while 1N6272A provides identical protection with enhanced VBR uniformity - making 1.5KE11C optimal for cost-sensitive 1500W applications and 1N6272A ideal for AEC-Q101-compliant production.
Availability
1.5KE11C is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver input surge suppression requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1.5KE11C 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power management devices since 1979.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing ruggedness, AEC-Q101 qualification readiness, and consistent clamping performance across −55°C to +175°C.
FAQ
What is the clamping voltage of the 1.5KE11C under a 10/1000μs surge?
The 1.5KE11C clamps to a maximum of 16.2V when subjected to a 10/1000μs transient waveform at its rated peak pulse current of 97A. This value is measured per JEDEC test conditions and guarantees protection for downstream components rated up to 18V, such as automotive-grade LDOs and microcontrollers. The 1.5KE11C achieves this with low dynamic impedance, ensuring minimal voltage overshoot even at high di/dt rates.
Is the 1.5KE11C bidirectional or unidirectional?
1.5KE11C is a unidirectional TVS diode, indicated by the "C" suffix per Taiwan Semiconductor's naming convention. It conducts only in reverse bias above its breakdown voltage and must be installed with the cathode band toward the protected line. For bidirectional protection, the equivalent part is 1.5KE11CA - which has symmetrical breakdown in both polarities and no polarity marking.
Does the 1.5KE11C meet AEC-Q101 reliability standards?
The base 1.5KE11C is not AEC-Q101 qualified; however, the variant 1.5KE11CH (with "H" suffix) is fully AEC-Q101 qualified and tested per stress conditions including temperature cycling, humidity bias HAST, and mechanical shock. Engineers designing for automotive production should specify 1.5KE11CH to ensure compliance with TS 16949 and OEM component approval requirements.
What is the maximum leakage current of the 1.5KE11C at its working voltage?
At its working stand-off voltage of 8.92V, the 1.5KE11C exhibits a maximum blocking leakage current of less than 1μA - verified at 25°C ambient. This ultra-low leakage preserves battery life in always-on automotive modules and avoids loading sensitive reference voltages in precision analog circuits. Leakage remains below 5μA even at 125°C junction temperature.
Can the 1.5KE11C replace the 1N6272 in existing designs?
Yes, the 1.5KE11C is a direct functional replacement for 1N6272, sharing identical electrical specifications (VBR, VWM, VC, PPK), DO-201 package, and pinout. Both parts originate from the same JEDEC-standardized 1.5KE family. No PCB layout changes are required, though designers should verify date-code traceability and confirm RoHS/halogen-free status aligns with current compliance requirements for the 1.5KE11C.
1.5KE11C 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):
- 8.92V
- Voltage - Breakdown (Min):
- 9.9V
- Voltage - Clamping (Max) @ Ipp:
- 16.2V
- Current - Peak Pulse (10/1000µs):
- 97A
- 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
1.5KE11C FAQ
1.How can I place an order for 1.5KE11C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11C 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 1.5KE11C reliable?
The price and inventory of 1.5KE11C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11C is usually 5 days.
3.What payment methods are accepted for 1.5KE11C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11C?
1.5KE11C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11C 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 1.5KE11C?
For technical support, including 1.5KE11C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11C requirements.
6.How does Aetrix verify that 1.5KE11C is sourced from the original manufacturer or authorized distributors?
All 1.5KE11C 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 1.5KE11C meets industry standards.
7.What is the process for return or replacement of 1.5KE11C?
All 1.5KE11C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11C, 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 1.5KE11C part is unused and in its original packaging.
Return procedure for 1.5KE11C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11C Tags
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