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Taiwan Semiconductor Corporation 1.5KE120
- Part No.:
- 1.5KE120
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120.pdf
- Description:
- 1500W, 120V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,531
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Product details
Overview
1.5KE120 from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 120 V, minimum VBR of 108 V at 1.0 mA test current, maximum clamping voltage of 173 V at 9.1 A peak pulse current, and DO-201 package. It protects automotive power electronics and industrial control inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE120 datasheet, 1.5KE120 pinout, 1.5KE120 application, or 1.5KE120 equivalent, this page delivers verified electrical specs, clamping performance under 10/1000 µs surge, thermal derating behavior, AEC-Q101 qualification status, and real-world ESD/inductive switching protection use cases - all tied explicitly to the 1.5KE120 variant.
Technical Context
The 1.5KE120 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (108–132 V), with fast response (<1.0 ps from 0 V to VBR). Its 1500 W peak pulse power rating is defined at TA = 25°C per 10/1000 µs waveform and derates linearly above that ambient temperature.
It features low dynamic impedance and typical IR < 1 µA at VWM = 97.2 V, enabling minimal leakage in standby while maintaining robust clamping (VC = 173 V @ IPP = 9.1 A). The device meets ISO 7637-2 immunity requirements for automotive load-dump and inductive-switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min / max | 108 V / 132 V at IT = 1.0 mA - defines reliable conduction onset window under standardized test conditions |
| VWM | 97.2 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPP | 173 V at 9.1 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPK | 1500 W - peak transient power dissipation capability at TA = 25°C |
| Junction temp. range | −55 °C to +175 °C - supports under-hood automotive and industrial high-temp environments |
| Package | DO-201 - axial-leaded, UL 94V-0 molded case with tin-plated leads per J-STD-002 |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional polarity. 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 | Forward conduction terminal | Connected to system ground or low-side return path in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail); conducts when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W surge rating | Withstands 10/1000 µs transients up to 9.1 A without failure - sufficient for ISO 7637-2 Pulse 5a (load dump) |
| Clamping voltage 173 V | Limits voltage seen by downstream 150 V-rated components during worst-case surge - enables robust system-level protection |
| Response time <1.0 ps | Activates before most semiconductor damage mechanisms initiate - critical for protecting fast logic and MCU I/O |
| AEC-Q101 qualified option | 1.5KE120A variant available with automotive-grade reliability validation - required for OEM powertrain and chassis modules |
| Low IR <1 µA @ 97.2 V | Minimizes standby power loss and avoids false triggering in high-impedance sensing circuits |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Suppresses load-dump transients on 12 V battery-fed ECUs in vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, clamping surges within microseconds. Use Value: Limits rail voltage to ≤173 V during 100 V/350 ms load dump, protecting 150 V-rated DC-DC controllers and CAN transceivers. | Use Scenario: Shields digital input channels of programmable logic controllers from field-wiring inductive kickback. IC Role / Device Role / Timing Role: Standoff protector on 24 V discrete input terminals, activated only during >108 V spikes. Use Value: Prevents latch-up or gate oxide rupture in optocoupler input stages during 400 V/20 µs relay coil flyback events. |
| LED Driver Overvoltage Clamp | Motor Drive Gate Driver Protection |
Use Scenario: Guards constant-current LED driver ICs against supply-line transients in streetlight systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver input capacitor, absorbing energy before it reaches IC pins. Use Value: Clamps 120 V surges to 173 V, staying below absolute maximum ratings of buck controller ICs rated for 200 V input. | Use Scenario: Protects high-side gate drivers in BLDC inverters from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Placed between gate driver output and power MOSFET gate, referenced to source potential. Use Value: Limits gate-source voltage excursion to ≤173 V, preventing unintended turn-on or oxide breakdown in 200 V-rated Si MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A | DO-214AA package, 1000 W rating, VC = 193 V @ 7.8 A - lower power, higher clamping | Surface-mount alternative for space-constrained PCBs; not suitable for 1500 W load-dump duty | Select when board area is limited and peak surge energy is ≤1000 W |
| 1N6297A | Same DO-201 package, tighter VBR tolerance (114–126 V), lower VC = 165 V @ 9.5 A - AEC-Q101 qualified | Drop-in replacement where automotive qualification and tighter parametric control are mandatory | Choose for production automotive modules requiring AEC-Q101 compliance and reduced clamping variance |
Compared with 1.5KE120, SMBJ120A trades 33% lower surge rating and higher clamping for SMT compatibility, while 1.5KE120A (1N6297A) retains identical form factor and improves clamping consistency and automotive qualification - making it the preferred upgrade path for new designs targeting OEM requirements.
Availability
1.5KE120 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, LED driver overvoltage clamp, and motor drive gate driver safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE120 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, serving global automotive, industrial, and consumer markets since 1979.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh environments, emphasizing rugged DO-201 packaging, AEC-Q101 qualification paths, and consistent clamping performance across −55 °C to +175 °C.
FAQ
What is the breakdown voltage range for 1.5KE120?
The 1.5KE120 has a guaranteed breakdown voltage range of 108 V to 132 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35. This window ensures reliable activation during transients exceeding 108 V while avoiding premature conduction below the 97.2 V working stand-off voltage. The 1.5KE120's VBR tolerance reflects standard JEDEC specification for the 1.5KE family and is confirmed in Taiwan Semiconductor's O2104 datasheet revision.
Is 1.5KE120 unidirectional or bidirectional?
The 1.5KE120 is a unidirectional TVS diode, indicated by its single cathode band marking and absence of "C" or "CA" suffix. It conducts only in reverse bias above VBR, with forward voltage drop of 3.5 V at 50 A. Bidirectional operation requires part numbers ending in "C" (e.g., 1.5KE120C), which are electrically symmetrical and lack polarity marking - the 1.5KE120 does not support bidirectional use.
What is the maximum clamping voltage of 1.5KE120 under surge conditions?
The 1.5KE120 clamps to a maximum of 173 V when subjected to its rated 9.1 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events. Clamping performance remains stable across the full −55 °C to +175 °C junction temperature range per Taiwan Semiconductor's characterization data.
Does 1.5KE120 meet automotive qualification standards?
The base 1.5KE120 is not AEC-Q101 qualified; however, its direct variant 1.5KE120A (JEDEC type 1N6297A) is fully AEC-Q101 qualified and shares identical electrical parameters except for tighter VBR tolerance (114–126 V) and lower clamping voltage (165 V). For automotive production, specify 1.5KE120A - the 1.5KE120 itself is intended for industrial and commercial applications where AEC-Q101 is not mandated.
What package type does 1.5KE120 use and what are its mechanical features?
The 1.5KE120 uses the DO-201 axial-leaded package: a cylindrical epoxy-molded case with tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. It weighs approximately 0.090 g, carries a cathode band for polarity identification, and meets UL 94V-0 flammability rating. Lead length is standardized for through-hole mounting with 0.375" (9.5 mm) heat-sink reference per datasheet derating curves.
1.5KE120 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):
- 97.2V
- Voltage - Breakdown (Min):
- 108V
- Voltage - Clamping (Max) @ Ipp:
- 173V
- Current - Peak Pulse (10/1000µs):
- 9.1A
- 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
1.5KE120 FAQ
1.How can I place an order for 1.5KE120 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120 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 1.5KE120 reliable?
The price and inventory of 1.5KE120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE120 is usually 5 days.
3.What payment methods are accepted for 1.5KE120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE120?
1.5KE120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE120 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 1.5KE120?
For technical support, including 1.5KE120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120 requirements.
6.How does Aetrix verify that 1.5KE120 is sourced from the original manufacturer or authorized distributors?
All 1.5KE120 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 1.5KE120 meets industry standards.
7.What is the process for return or replacement of 1.5KE120?
All 1.5KE120 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120, 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 1.5KE120 part is unused and in its original packaging.
Return procedure for 1.5KE120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120 Tags
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