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Diodes Incorporated 1.5KE180A-T
- Part No.:
- 1.5KE180A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE180A-T.pdf
- Description:
- TVS DIODE 154VWM 246VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:5,414
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Product details
Overview
1.5KE180A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 154V reverse standoff voltage (VRWM), 171V minimum breakdown voltage (VBR), 246V maximum clamping voltage (VC) at 6.1A peak pulse current (IPP), and operates across –55°C to +175°C.
For engineers reviewing the 1.5KE180A-T datasheet, 1.5KE180A-T pinout, 1.5KE180A-T application, or 1.5KE180A-T equivalent, this part supports high-energy surge suppression in automotive power systems, industrial motor drives, and telecom line interfaces where fast response (<1 ns), low leakage (<5 µA @ 154V), and robust 1500W pulse handling are critical.
Technical Context
This unidirectional TVS diode uses glass-passivated silicon junction technology to achieve sub-nanosecond response time and stable clamping under repetitive 1.0 ms 8/20 µs surge waveforms. Its DO-201 axial-leaded package enables through-hole mounting with 9.5 mm lead length and 1.12 g mass, supporting thermal dissipation up to 5.0 W at TL = 75°C.
The device exhibits a voltage temperature coefficient of +0.108 %/°C for VBR, enabling predictable clamping drift over wide ambient ranges. With 1000 µA max reverse leakage at VRWM and 200 A non-repetitive forward surge rating, it delivers reliable protection against ESD, lightning-induced transients, and inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W - Sustains single 1.0 ms transient without failure per IEC 61000-4-5 Level 4 |
| Reverse Standoff Voltage | 154 V - Maximum continuous DC operating voltage before significant leakage begins |
| Breakdown Voltage | 171 V min @ 1.0 mA - Confirmed avalanche onset threshold for reliable clamping activation |
| Clamping Voltage | 246 V max @ 6.1 A IPP - Limits downstream circuit voltage during worst-case surge event |
| Operating Temperature | –55°C to +175°C - Validated performance range for under-hood automotive and industrial environments |
| Leakage Current | <5 µA @ 154 V - Ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Response Time | <1.0 ns - Enables effective suppression of fast-rising ESD and switching transients |
Pinout & Package
Package: DO-201 axial-leaded epoxy molded case (UL 94V-0), 25.4 mm overall length, 8.5–9.53 mm body diameter, 4.8–5.21 mm lead spacing. Cathode identified by band marking on unidirectional version.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during reverse-biased clamping | Connected to protected line; conducts surge current to ground when VC exceeded |
| Cathode | Reference terminal / polarity indicator | Marked with band; ties to system ground or lower-potential rail for unidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Enhances long-term reliability and moisture resistance vs. plastic-passivated alternatives |
| 1500W peak pulse rating | Supports IEC 61000-4-5 4 kV/2 Ω surge testing without degradation |
| RoHS-compliant, halogen-free finish | Meets automotive and industrial environmental compliance requirements (Br+Cl <1500 ppm) |
| Fast response time <1 ns | Prevents voltage overshoot before protection activates in high-speed digital or RF circuits |
| Axial leads, solderable per MIL-STD-202 | Enables robust mechanical attachment and thermal conduction in high-vibration environments |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protection of 24V battery-fed ECUs against load dump transients up to 120V. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and regulator input. Use Value: Clamps 120V/300ms load dump to ≤246V, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: Safeguarding gate drivers and feedback sensors in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Parallel-mounted across DC bus terminals to absorb IGBT turn-off energy. Use Value: Limits bus voltage overshoot to 246V during 6.1A switching surges, avoiding overvoltage lockout. |
| Telecom Line Interface | Renewable Energy Inverter Input |
Use Scenario: Surge protection on RS-485 data lines exposed to outdoor lightning coupling. IC Role / Device Role / Timing Role: Unidirectional shunt device placed between differential pair and ground. Use Value: Clamps common-mode transients to ≤246V while maintaining signal integrity below 154V standoff. |
Use Scenario: DC-link protection in solar string inverters subject to grid-switching transients. IC Role / Device Role / Timing Role: Mounted across PV array input terminals to clamp reverse polarity surges. Use Value: Absorbs 1500W pulses without degradation, extending capacitor lifetime in harsh desert environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Lower 600W rating, SMA package, 225V VC @ 2.7A IPP | Better suited for space-constrained PCBs but insufficient for 1500W IEC 61000-4-5 Level 4 | Select only if surge energy is limited to ≤600W and board area is critical |
| 1.5SMC180A | Same 1500W rating, SMC package, 246V VC @ 6.1A IPP, but 150°C max Tj | Surface-mount alternative with identical electrical specs but reduced thermal margin vs. DO-201 | Choose for automated assembly where axial leads are incompatible, accepting lower thermal endurance |
Compared with 1.5KE180A-T, SMBJ180A offers compactness at the cost of surge capacity, while 1.5SMC180A matches power rating but trades axial thermal robustness for SMT manufacturability-making the DO-201 variant optimal for high-reliability through-hole deployments.
Availability
1.5KE180A-T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive control, and telecom line interface applications requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE180A-T 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices, with manufacturing certified to IATF 16949 and product qualification to AEC-Q101.
The 1.5KE series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure, emphasizing ruggedized packaging, extended temperature operation, and consistent clamping performance under repetitive stress.
FAQ
Is 1.5KE180A-T RoHS and halogen-free compliant?
Yes. The 1.5KE180A-T meets EU RoHS 2015/863/EU (RoHS 3) requirements and is halogen- and antimony-free per Diodes' "Green" definition: Br <900 ppm, Cl <900 ppm (Br+Cl <1500 ppm), Sb <1000 ppm. Lead-free tin finish complies with MIL-STD-202 solderability standards.
What is the difference between 1.5KE180A-T and 1.5KE180CA-T?
The suffix "C" denotes bidirectional configuration. 1.5KE180A-T is unidirectional (cathode-banded), intended for DC rail protection with polarity-sensitive placement. 1.5KE180CA-T lacks the cathode band and clamps symmetrically in both directions, suitable for AC or differential signal lines where polarity reversal may occur.
Can 1.5KE180A-T be used in place of 1.5KE170A-T?
No. While both share DO-201 packaging and 1500W rating, their clamping voltages differ: 1.5KE170A-T has VC = 234 V @ 6.4 A, whereas 1.5KE180A-T clamps at 246 V @ 6.1 A. Substitution requires verifying that 12 V higher clamping voltage remains within downstream IC absolute maximum ratings.
Does 1.5KE180A-T require derating above +25°C ambient?
Yes. Peak pulse power must be linearly derated above TA = +25°C at 12.5 mW/°C, per datasheet Figure 1. At +75°C ambient, Ppk drops to 1250 W. Steady-state power dissipation is rated at 5.0 W only when lead temperature (TL) is held at 75°C using 9.5 mm lead length as heatsink.
1.5KE180A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 6.1A
- 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-201
1.5KE180A-T FAQ
1.How can I place an order for 1.5KE180A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE180A-T 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 1.5KE180A-T reliable?
The price and inventory of 1.5KE180A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE180A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE180A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE180A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE180A-T?
1.5KE180A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE180A-T 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 1.5KE180A-T?
For technical support, including 1.5KE180A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE180A-T requirements.
6.How does Aetrix verify that 1.5KE180A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE180A-T 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 1.5KE180A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE180A-T?
All 1.5KE180A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE180A-T, 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 1.5KE180A-T part is unused and in its original packaging.
Return procedure for 1.5KE180A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE180A-T Tags
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