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Taiwan Semiconductor Corporation 1V5KE120A
- Part No.:
- 1V5KE120A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE120A.pdf
- Description:
- TVS DIODE 102VWM 165VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,520
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Product details
Overview
1V5KE120A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with breakdown voltage 114–126 V at 1 mA test current, reverse stand-off voltage 102 V, and clamping voltage 165 V at 9.1 A peak pulse current. It protects power rails and I/O lines against ESD, lightning-induced surges, and inductive switching transients in industrial power supplies and motor drives.
For engineers reviewing the 1V5KE120A datasheet, 1V5KE120A pinout, 1V5KE120A application, or 1V5KE120A equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current handling under 10/1000 µs waveform, thermal derating above 75°C ambient, and DO-201 lead-form compatibility with existing PCB footprints.
Technical Context
The 1V5KE120A operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages and low incremental surge resistance for stable clamping performance. Its unidirectional polarity requires cathode-band orientation toward positive rail, and it exhibits <1 µA reverse leakage at 102 V DC.
Designed for single-pulse surge immunity per IEC 61000-4-5 (Level 4), the device sustains 1500 W peak pulse power at 1 ms, with junction temperature rated from –55°C to +175°C and steady-state power dissipation of 5 W at 75°C with 0.375″ lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 114 V / 126 V at 1 mA - defines minimum guaranteed avalanche onset and maximum variation across production lot |
| VRWM | 102 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 165 V at 9.1 A - clamped voltage seen by downstream circuit during full-rated 10/1000 µs surge |
| PPPM | 1500 W - peak pulse power capability under standard 1 ms waveform, defining surge energy limit |
| IR @ VRWM | <5 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +175°C - enables operation in high-temperature environments such as enclosed motor controllers or LED drivers |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with pure tin-plated leads, UL 94V-0 molding compound, and cathode band marking for unidirectional polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or negative rail; must be routed with low-inductance path for effective surge shunting |
| Cathode | High-side connection point | Marked with band; connects to protected line (e.g., 120 V DC input); determines conduction direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term reliability and reduced parameter drift under repeated surge stress |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing without degradation |
| Clamping ratio VC/VBR ≈ 1.38 | Provides tight voltage margin between protection threshold and safe operating area of downstream components |
| RoHS & halogen-free compliance | Fulfills environmental requirements for industrial and automotive end equipment without compromising surge performance |
Applications
| Industrial Power Input Protection | Motor Drive DC Bus Clamping |
|---|---|
Use Scenario: 120 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and field wiring transients. IC Role / Device Role: Primary overvoltage clamp placed between input terminal and bulk capacitor. Use Value: Limits transient voltage to ≤165 V, preventing damage to upstream rectifier and downstream DC-DC controller ICs rated for 200 V max. | Use Scenario: DC link of 3-phase inverter driving HVAC compressor, subject to regenerative energy spikes during rapid deceleration. IC Role / Device Role: Unidirectional TVS connected from DC+ bus to ground to absorb inductive kickback. Use Value: Clamps 10/1000 µs surges up to 9.1 A without thermal runaway, maintaining bus stability during fault recovery. |
| LED Driver Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Constant-current LED driver board powered from 100–120 V AC via bridge rectifier, installed outdoors with long input cabling. IC Role / Device Role: Secondary-level TVS on rectified output, downstream of bulk filter but upstream of LED string. Use Value: Suppresses induced lightning surges while avoiding false triggering during normal 120 V ripple, due to precise 102 V VRWM. | Use Scenario: Low-voltage analog interface on telecom remote terminal unit (RTU), connected to external sensor loop susceptible to EFT bursts. IC Role / Device Role: High-energy TVS on supply rail feeding isolated RS-485 transceiver and ADC reference. Use Value: Absorbs 4 kV EFT pulses per IEC 61000-4-4 without latch-up or parametric shift in precision analog front-end. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse P6SMB120A | Same DO-214AA (SMB) package; 114–126 V VBR; 165 V VC @ 9.1 A; 600 W rating | Lower peak power limits use in lower-energy surge environments; SMB footprint differs from DO-201 | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 3 |
| ON Semiconductor 1.5KE120A | Identical DO-201 package, same VBR/VC specs, RoHS-compliant; minor leakage variance (<1 µA vs <5 µA) | No functional or layout change required; validated in same industrial reference designs | Preferred drop-in alternative where dual-sourcing or second-source qualification is required |
Compared with 1V5KE120A, P6SMB120A offers smaller footprint but half the surge energy capacity, while 1.5KE120A delivers identical electrical and mechanical behavior with proven cross-qualification in OEM power systems.
Availability
1V5KE120A is available at Aetrix Electronics and suitable for industrial power supplies, motor drive DC links, outdoor LED drivers, and telecom interface protection requiring stable component supply and long-lifecycle support.
Supply support for 1V5KE120A 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 industrial and automotive markets.
The 1V5KE series was developed specifically for high-energy transient suppression in harsh-environment power conversion systems, emphasizing robustness, repeatable clamping, and extended temperature operation.
FAQ
What is the maximum clamping voltage of the 1V5KE120A under full-rated surge conditions?
The 1V5KE120A clamps to 165 V when subjected to its rated 9.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at TA = 25°C and represents the upper voltage limit imposed on protected circuitry during worst-case surge events. Designers must ensure downstream components have sufficient voltage margin above this clamping level.
Is the 1V5KE120A suitable for bidirectional transient protection?
No - the 1V5KE120A is unidirectional and intended for DC rail protection with defined polarity (cathode to positive line). For bidirectional AC or symmetrical signal-line protection, the 1V5KE120CA variant must be used. Using the unidirectional 1V5KE120A on AC signals risks forward conduction and failure.
What is the reverse leakage current specification for the 1V5KE120A at its rated VRWM?
At its reverse stand-off voltage of 102 V, the 1V5KE120A exhibits ≤5 µA typical reverse leakage current at TA = 25°C. This low leakage preserves efficiency in high-impedance monitoring circuits and avoids false triggering in precision analog interfaces powered from the same rail.
Can the 1V5KE120A be used in parallel to increase surge current handling?
No - paralleling multiple 1V5KE120A units is not recommended due to mismatch in VBR tolerance (114–126 V) causing uneven current sharing and potential thermal runaway. For higher current capability, select a higher-rated part like 1V5KE150A or consult TSC's application guidance on staged protection topologies.
What is the lead finish and solderability standard for the 1V5KE120A?
The 1V5KE120A features pure tin-plated leads compliant with J-STD-002 for solderability, supporting both wave and reflow processes. The DO-201 package meets JEDEC standards for mechanical robustness and thermal cycling endurance, with weight approximately 0.090 g.
1V5KE120A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
1V5KE120A FAQ
1.How can I place an order for 1V5KE120A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE120A 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 1V5KE120A reliable?
The price and inventory of 1V5KE120A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE120A is usually 5 days.
3.What payment methods are accepted for 1V5KE120A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE120A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE120A?
1V5KE120A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE120A 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 1V5KE120A?
For technical support, including 1V5KE120A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE120A requirements.
6.How does Aetrix verify that 1V5KE120A is sourced from the original manufacturer or authorized distributors?
All 1V5KE120A 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 1V5KE120A meets industry standards.
7.What is the process for return or replacement of 1V5KE120A?
All 1V5KE120A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE120A, 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 1V5KE120A part is unused and in its original packaging.
Return procedure for 1V5KE120A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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