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Diodes Incorporated 1.5KE180CA-T
- Part No.:
- 1.5KE180CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE180CA-T.pdf
- Description:
- TVS DIODE 154VWM 246VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,287
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Product details
Overview
1.5KE180CA-T from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for overvoltage protection of DC power lines and signal interfaces. 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 1.5KE180CA-T datasheet, 1.5KE180CA-T pinout, 1.5KE180CA-T application, or 1.5KE180CA-T equivalent, this device serves as a robust, RoHS-compliant, halogen-free surge protector for automotive power rails, industrial I/O ports, and telecom line cards where fast response (<1 ns), low leakage (<5 µA @ VR), and stable temperature coefficient (0.108%/°C) are critical.
Technical Context
This bidirectional TVS diode uses glass-passivated silicon junctions to achieve sub-nanosecond response time and consistent clamping performance under 8/20 µs surge waveforms. Its symmetrical avalanche structure enables equal clamping in both polarities without external polarity management.
The device is rated for 1500W peak pulse power (tP = 1.0 ms), 5.0W steady-state dissipation at TL = 75°C, and withstands 200A forward surge current (8.3 ms half-sine). Its DO-201 axial package supports manual and wave soldering per MIL-STD-202 Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains single 1.0ms 8/20µs surges up to 6.1A without failure |
| Reverse Standoff Voltage (VRWM) | 154V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 171V min @ 1mA - precise avalanche initiation threshold for predictable clamping onset |
| Clamping Voltage (VC) | 246V max @ 6.1A IPP - limits protected circuit voltage during surge events |
| Leakage Current (IR) | <5 µA @ 154V - negligible standby power loss and minimal interference with high-impedance circuits |
| Operating Temperature | -55°C to +175°C - qualified for under-hood automotive, industrial motor drives, and outdoor telecom |
| Temp. Coefficient (αVBR) | +0.108%/°C - predictable VBR drift ensures stable clamping across wide thermal ranges |
Pinout & Package
DO-201 axial-leaded package: hermetically sealed, transfer-molded epoxy body (UL 94V-0), 1.12g weight, tin-plated leads solderable per MIL-STD-202 Method 208. Bidirectional marking: type number only (no cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative polarity) | Accepts reverse surge energy when voltage falls below -154V; symmetric with cathode |
| Cathode | Surge current entry (positive polarity) | Accepts forward surge energy when voltage exceeds +154V; symmetric with anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| Bidirectional symmetry | Eliminates need for polarity-aware layout; protects AC-coupled or floating lines without external diodes |
| RoHS & "Green" compliance | Meets EU RoHS 3 (2015/863/EU), <900ppm Br/Cl, <1000ppm Sb - suitable for automotive PPAP and eco-design mandates |
| Fast response time | <1.0 ns - clamps transients before downstream ICs experience damaging overvoltage |
| High IFSM rating | 200A surge capability - handles repetitive line-switching transients and lightning-induced surges |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12V/24V battery rail protection against load dump and alternator transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input to ECUs and body control modules. Use Value: Clamps 120V–200V load dump spikes to ≤246V within nanoseconds, preventing MOSFET gate oxide rupture and MCU brownout. |
Use Scenario: Digital input/output channels in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Front-end transient suppressor before optocoupler or level-shifter interface. Use Value: Limits induced 4kV EFT bursts to safe levels (<246V), preserving isolation integrity and reducing false triggering. |
| Telecom Line Interface | Renewable Energy Inverter DC Link |
Use Scenario: Protection of RS-485 transceivers and Ethernet PHYs connected to outdoor cabling. IC Role / Device Role / Timing Role: Secondary surge suppression stage after gas discharge tube (GDT) primary protection. Use Value: Provides low-clamp refinement (246V) after GDT crowbar, ensuring transceiver survival under IEC 61000-4-5 Level 4 surges. |
Use Scenario: DC bus protection in solar string inverters subject to switching transients and grid faults. IC Role / Device Role / Timing Role: Parallel-connected TVS across 200–400V DC link capacitors. Use Value: Absorbs 1500W switching spikes from IGBT turn-off, preventing overvoltage trip and capacitor over-stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Same 180V standoff, but 600W rating (SMB package), lower IPP (33.3A), smaller footprint | Better suited for space-constrained PCBs with lower surge energy requirements (IEC 61000-4-2) | Select when board area is limited and peak surge energy does not exceed 600W |
| 1.5SMC180CA | Same 1500W rating and 180V standoff, but SMC (DO-214AB) surface-mount package, 1.5x faster thermal recovery | Preferred for automated SMT assembly and higher-reliability industrial designs requiring reflow compatibility | Select when transitioning from through-hole to SMT or requiring tighter thermal cycling performance |
Compared with SMBJ180CA and 1.5SMC180CA, the 1.5KE180CA-T offers superior axial-lead mechanical robustness for high-vibration environments and higher surge endurance per pulse, while trading off PCB density and assembly automation compatibility.
Availability
1.5KE180CA-T is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, and telecom line interface applications requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE180CA-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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The 1.5KE series belongs to Diodes' high-power TVS portfolio, engineered specifically for ruggedized overvoltage protection in automotive, industrial, and telecom infrastructure where reliability under extreme surge conditions is non-negotiable.
FAQ
What is the difference between 1.5KE180CA-T and 1.5KE180A-T?
The "C" suffix denotes bidirectional construction: 1.5KE180CA-T clamps symmetrically for both positive and negative transients, while 1.5KE180A-T is unidirectional and requires correct polarity orientation. The CA version eliminates polarity-dependent layout constraints and supports AC or floating-line protection without additional components.
Can 1.5KE180CA-T be used in place of a 180V Zener diode for voltage regulation?
No - this device is optimized for transient suppression, not DC regulation. Its VBR tolerance is ±10%, and it lacks the tight dynamic impedance and low-noise characteristics required for precision regulation. Use dedicated Zener regulators like BZX84-C180 for stable reference applications.
Is 1.5KE180CA-T qualified to AEC-Q101?
No - while Diodes offers AEC-Q101-qualified TVS devices (e.g., DZxx series), the 1.5KE180CA-T is not AEC-Q101 certified. For automotive applications requiring formal qualification, contact Diodes directly for PPAP-capable alternatives such as the P4SMAJ180CA-Q.
What is the recommended PCB pad layout for DO-201 axial package?
Use 2.5 mm diameter round pads spaced 7.5 mm apart (center-to-center), with ≥0.8 mm trace width and ≥1.5 mm clearance to adjacent copper. Maintain ≥2.0 mm creepage distance for 246V clamping level per IPC-2221B Class B requirements, especially in humid or dusty environments.
1.5KE180CA-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:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE180CA-T FAQ
1.How can I place an order for 1.5KE180CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE180CA-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 1.5KE180CA-T reliable?
The price and inventory of 1.5KE180CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE180CA-T is usually 5 days.
3.What payment methods are accepted for 1.5KE180CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE180CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE180CA-T?
1.5KE180CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE180CA-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 1.5KE180CA-T?
For technical support, including 1.5KE180CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE180CA-T requirements.
6.How does Aetrix verify that 1.5KE180CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE180CA-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 1.5KE180CA-T meets industry standards.
7.What is the process for return or replacement of 1.5KE180CA-T?
All 1.5KE180CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE180CA-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 1.5KE180CA-T part is unused and in its original packaging.
Return procedure for 1.5KE180CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE180CA-T Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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