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Taiwan Semiconductor Corporation 1V5KE20A
- Part No.:
- 1V5KE20A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE20A.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,366
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Product details
Overview
1V5KE20A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 19.0–21.0 V breakdown voltage (VBR), 17.1 V reverse stand-off voltage (VRWM), and 27.7 V clamping voltage (VC) at 54.2 A peak pulse current - designed for robust ESD and lightning surge protection in DC power rails and I/O interfaces.
For engineers reviewing the 1V5KE20A datasheet, 1V5KE20A pinout, 1V5KE20A application, or 1V5KE20A equivalent, key selection criteria include verified clamping performance under 10/1000 µs transients, low leakage (<1 µA above 10 V), glass-passivated junction reliability, and DO-201 mechanical compatibility with high-surge industrial PCB layouts.
Technical Context
The 1V5KE20A operates as a unidirectional avalanche diode, triggered when transient voltage exceeds its 19.0–21.0 V breakdown threshold. It delivers 1500 W peak pulse power (1 ms, 10/1000 µs waveform) with 27.7 V clamping at 54.2 A, limiting downstream voltage stress during fast-rising surges.
Its glass-passivated chip junction ensures stable VBR tolerance and low incremental surge resistance. With 175 °C maximum junction temperature and -55 to +175 °C operating range, it supports harsh-environment deployment without derating below 75 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - defines precise avalanche initiation window for predictable overvoltage triggering |
| VRWM | 17.1 V - maximum continuous reverse voltage before leakage rises significantly; sets safe DC operating margin |
| VC @ IPPM | 27.7 V at 54.2 A - clamped voltage during worst-case 1500 W transient; determines protected circuit's max stress level |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs standard waveform; validates lightning/ESD immunity |
| IR @ VRWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss and signal integrity in high-impedance nodes |
| TJ max | +175 °C - enables operation in engine compartments, industrial drives, and enclosed power supplies without thermal shutdown |
Pinout & Package
Package: DO-201 axial-leaded package with cathode band marking; pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., DC input, data line); cathode band identifies polarity for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR across temperature and lifetime, eliminating passivation-related drift in field applications |
| 1500 W peak pulse rating (1 ms) | Validates compliance with IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) surge immunity requirements |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for 3.3 V/5 V logic and microcontrollers |
| Fast response time (<1 ps) | Clamps sub-nanosecond ESD events before sensitive ICs experience latch-up or gate oxide damage |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) I/O |
|---|---|
Use Scenario: 24 V DC power rail in programmable logic controllers exposed to load dump and inductive switching spikes. IC Role / Device Role: Primary unidirectional surge clamp on main input, placed upstream of DC-DC converters and LDOs. Use Value: Limits transient voltage to ≤27.7 V, preventing overvoltage failure of 36 V-rated input stages and enabling single-stage protection architecture. | Use Scenario: LIN bus or sensor supply lines in BCMs subject to ISO 7637-2 Pulse 1/2a/3a transients. IC Role / Device Role: Line-side TVS on 12 V sensor feed or LIN transceiver VCC, mounted near connector entry point. Use Value: Clamps 100 V/500 ms pulses to <30 V within 1 ns, preserving signal integrity and avoiding false resets in automotive-grade MCUs. |
| LED Driver Output Protection | Industrial Ethernet PHY Interface |
Use Scenario: Constant-current LED string driver output subjected to cable discharge and hot-swap transients. IC Role / Device Role: Unidirectional TVS between driver output and LED anode, referenced to common cathode return. Use Value: Absorbs 1500 W surges without degradation, maintaining <1 µA leakage to avoid current regulation error in precision LED dimming circuits. | Use Scenario: RJ45 magnetics secondary side in industrial Ethernet switches operating in factory-floor EMI environments. IC Role / Device Role: Secondary-side TVS on TX+/RX+ differential pairs, grounded via chassis to shunt common-mode surges. Use Value: Provides 27.7 V clamping with <0.5 pF parasitic capacitance (per diode), preserving 100BASE-TX signal rise time and jitter budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ20A | Same DO-214AC (SMA) package; 20.0–22.2 V VBR; 32.4 V VC at 46.3 A; 400 W PPPM | Lower power rating limits use to sub-IEC Level 3 surges; higher VC reduces protection margin for 24 V systems | Select when space-constrained SMT layout required and surge energy is limited to <400 W |
| ON Semiconductor 1.5KE20A | Identical DO-201 package; 19.0–21.0 V VBR; 27.7 V VC at 54.2 A; 1500 W PPPM; same electrical specs but different JEDEC prefix | No functional difference; qualified to same AEC-Q200 stress tests; alternate sourcing option | Choose for dual-sourcing assurance without design or layout change |
Compared with SMAJ20A and 1.5KE20A, the 1V5KE20A offers identical surge capability and clamping to 1.5KE20A while providing superior protection margin versus SMAJ20A's lower power and higher clamping - making it optimal for high-reliability 24 V industrial and automotive power domains.
Availability
1V5KE20A is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, LED driver outputs, and industrial Ethernet PHY interfaces requiring stable component supply and long-term obsolescence management.
Supply support for 1V5KE20A 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 MOSFETs for industrial and automotive markets.
The 1V5KE series was engineered specifically for high-energy transient suppression in 12 V–440 V DC systems, emphasizing rugged DO-201 packaging, tight VBR tolerance, and repeatable clamping performance under repetitive surge stress.
FAQ
What is the breakdown voltage range of the 1V5KE20A?
The 1V5KE20A has a guaranteed breakdown voltage (VBR) range of 19.0 V to 21.0 V at 1 mA test current, measured per JEDEC standard. This tight 10.5% tolerance ensures consistent surge triggering behavior across production lots and temperature extremes, critical for reliable overvoltage protection in 24 V systems where 1V5KE20A is commonly deployed.
Is the 1V5KE20A unidirectional or bidirectional?
1V5KE20A is a unidirectional TVS diode, indicated by the absence of "C" suffix in its full part number. It conducts only in reverse bias during overvoltage events and must be installed with cathode toward the protected line. For bidirectional operation, the equivalent part is 1V5KE20CA, which provides symmetrical clamping in both polarities.
What is the maximum clamping voltage of the 1V5KE20A under surge conditions?
The 1V5KE20A clamps to a maximum of 27.7 V at 54.2 A peak pulse current (IPPM), defined for a 10/1000 µs waveform. This value is measured per industry-standard surge testing and represents the highest voltage seen by downstream circuitry during a full 1500 W transient - a key parameter used to verify compatibility with 36 V-rated IC inputs.
Does the 1V5KE20A meet RoHS and halogen-free requirements?
Yes, the 1V5KE20A is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and its pure tin-plated leads satisfy J-STD-002 solderability requirements - confirming suitability for lead-free reflow assembly and environmentally regulated industrial and automotive end equipment.
What is the junction temperature rating of the 1V5KE20A?
The 1V5KE20A has a maximum junction temperature (TJ) rating of +175 °C and operates across -55 °C to +175 °C. This wide thermal range allows direct placement near heat-generating components like power MOSFETs or transformers, and supports uninterrupted operation in sealed enclosures where ambient temperatures exceed 100 °C - a key advantage of 1V5KE20A in motor drive and solar inverter designs.
1V5KE20A 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54.2A
- 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
1V5KE20A FAQ
1.How can I place an order for 1V5KE20A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE20A 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 1V5KE20A reliable?
The price and inventory of 1V5KE20A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE20A is usually 5 days.
3.What payment methods are accepted for 1V5KE20A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE20A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE20A?
1V5KE20A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE20A 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 1V5KE20A?
For technical support, including 1V5KE20A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE20A requirements.
6.How does Aetrix verify that 1V5KE20A is sourced from the original manufacturer or authorized distributors?
All 1V5KE20A 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 1V5KE20A meets industry standards.
7.What is the process for return or replacement of 1V5KE20A?
All 1V5KE20A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE20A, 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 1V5KE20A part is unused and in its original packaging.
Return procedure for 1V5KE20A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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