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STMicroelectronics 1.5KE180CA
- Part No.:
- 1.5KE180CA
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AE, Axial
- Datasheet:
-
1.5KE180CA.pdf
- Description:
- TVS D5.4X7.5 154V 1500W BIDIR
- Quantity:
- Payment:
- Shipping:
Inventory:1,218
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Product details
Overview
1.5KE180CA from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode in DO-201 package, designed for high-energy surge protection with 180 V standoff voltage (VRM), 246 V clamping voltage (VCL) at 6.1 A peak pulse current (IPP), and 1500 W peak pulse power (10/1000 µs). It operates up to 175 °C junction temperature and meets IEC 61000-4-2 (30 kV contact/air discharge) and IEC 61000-4-4 level 4 (4 kV) standards for industrial power supply and telecom interface protection.
For engineers reviewing the 1.5KE180CA datasheet, 1.5KE180CA pinout, 1.5KE180CA application, or 1.5KE180CA equivalent, key selection criteria include bidirectional clamping behavior, low dynamic resistance (4.06 Ω), high-temperature reliability (Tj = 175 °C), and compliance with UL 497B and IEC 61000-4-x immunity requirements in DC power rail and signal line protection.
Technical Context
The 1.5KE180CA implements planar-junction silicon avalanche technology optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its bidirectional structure enables symmetrical clamping across both polarities without external polarity constraints, supporting AC-coupled lines and floating interfaces.
It delivers stable clamping performance over temperature via defined thermal coefficient (αT = 10.8 × 10⁻⁴ /°C) and maintains low leakage (<1 µA at VRM = 154 V) even at elevated junction temperatures, enabling use in thermally demanding SMPS and outdoor telecom equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 154 V - maximum continuous reverse working voltage before clamping initiates |
| Breakdown Voltage (VBR) | 171–189 V at 1 mA - precise avalanche onset range defining protection threshold tolerance |
| Clamping Voltage (VCL) | 246 V at 6.1 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power | 1500 W (10/1000 µs) - energy-handling capacity for standard lightning surge waveforms |
| Dynamic Resistance (RD) | 4.06 Ω - governs voltage rise per unit increase in surge current beyond rated IPP |
| Junction Temp Range | −55 to +175 °C - supports operation in harsh environments including industrial motor drives and base stations |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact & air) - exceeds level 4 for robust human-body-model immunity |
Pinout & Package
1.5KE180CA uses the axial-leaded DO-201 package (8.5–9.5 mm length, 4.8–5.3 mm diameter, 0.96–1.06 mm lead diameter), with cathode band marking on one end. As a two-terminal bidirectional device, it has no polarity-sensitive pinout: both leads serve as symmetrical surge current paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Surge current entry/exit point | Marked end denotes cathode for unidirectional variants; for CA type, marking is for mechanical orientation only - terminals are functionally identical |
| Opposite lead | Surge current return path | Completes low-inductance path for bidirectional transient conduction; no functional distinction from marked lead |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating buses without polarity concerns |
| High-temperature stability | Rated for full 1500 W surge capability at Tj = 175 °C, critical for enclosed power supplies |
| Low dynamic resistance | 4.06 Ω minimizes voltage overshoot under increasing surge current, improving downstream IC survivability |
| UL 497B certification | Validated for telecom primary/secondary circuit protection per safety standard QVGQ2.E136224 |
| Matte tin lead finish | Ensures solderability compatibility with Pb-free reflow profiles and prevents whisker growth (JESD-201 Class 2) |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 48 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary shunt TVS device placed directly across input rails to clamp surges before upstream DC-DC converter. Use Value: Clamps 1500 W transients to ≤246 V, preventing damage to 60 V-rated input capacitors and MOSFETs while maintaining >175 °C operational margin. | Use Scenario: Ethernet PHY interface on industrial switch operating in unshielded outdoor cabinet with induced lightning coupling. IC Role / Device Role / Timing Role: Bidirectional line-to-line and line-to-ground protector on differential pairs (e.g., TX+/TX−) before magnetics. Use Value: Symmetrical ±30 kV ESD immunity and 4 kV IEC 61000-4-4 surge suppression preserve signal integrity without polarity alignment overhead. |
| AC-DC Adapter Secondary Side | Automotive Body Control Module (BCM) Power Rail |
Use Scenario: Output rectifier stage of 24 V wall adapter subjected to capacitor discharge events and cross-regulation spikes. IC Role / Device Role / Timing Role: Secondary-side TVS across output terminals to suppress post-regulator transients. Use Value: Low leakage (<1 µA at 154 V) avoids quiescent current penalty; DO-201 axial form factor fits legacy through-hole layouts. | Use Scenario: 12 V battery-supplied BCM microcontroller power rail exposed to load dump per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Secondary-level clamping device after primary TVS and fuse, protecting LDOs and CAN transceivers. Use Value: 246 V clamping ensures downstream 3.3 V/5 V regulators remain within absolute max ratings during 35 V/100 ms load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA (STMicroelectronics) | Same VBR/VCL specs but in smaller SMB (DO-214AA) package; lower 600 W peak power rating | Preferred for space-constrained PCBs where 600 W surge margin suffices | Select when board area is limited and surge threat level is moderate (e.g., consumer-grade interfaces) |
| 1N6284 (ON Semiconductor) | Identical DO-201 package and 180 V rating; slightly higher VCL (250 V @ 6.0 A) and RD (4.2 Ω) | Marginally reduced clamping efficiency; same thermal and mounting compatibility | Choose for second-source qualification where minor VCL trade-off is acceptable for supply chain diversification |
Compared with SMBJ180CA and 1N6284, the 1.5KE180CA provides superior energy handling (1500 W vs. 600 W or 1500 W with higher VCL), making it optimal for high-reliability industrial and automotive secondary-rail protection where thermal derating and clamping precision are critical.
Availability
1.5KE180CA is available at Aetrix Electronics and suitable for industrial power supply input protection, telecom line interface protection, AC-DC adapter secondary side, and automotive body control module power rail applications requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE180CA 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and consumer markets.
The 1.5KE series belongs to ST's high-power TVS portfolio, engineered specifically for robust, high-temperature surge protection in mission-critical power conversion and communication infrastructure systems.
FAQ
What is the difference between 1.5KE180A and 1.5KE180CA?
The "A" suffix denotes a unidirectional TVS diode with anode/cathode polarity, suitable for DC rails where surge direction is known. The "CA" suffix indicates a bidirectional device with symmetrical clamping characteristics, ideal for AC lines, differential signals, or floating nodes where polarity reversal may occur. Both share identical VBR, VCL, and power ratings but differ in conduction behavior and marking convention.
Can 1.5KE180CA be used in parallel for higher surge current handling?
No - paralleling discrete TVS diodes like the 1.5KE180CA is not recommended due to mismatched breakdown voltages causing current imbalance and premature failure. For higher current capability, select a single higher-rated device (e.g., 3KP180CA) or implement staged protection with upstream current-limiting impedance.
Does 1.5KE180CA require a heatsink for 1500 W surge dissipation?
No - the 1500 W rating applies to a single 10/1000 µs transient pulse, not continuous power. The device relies on thermal mass of its DO-201 package and PCB copper for transient heat absorption. No heatsink is needed for standard surge duty cycles, though adequate copper pour (≥1 cm² per lead) improves reliability under repeated events.
How does temperature affect clamping voltage in 1.5KE180CA?
Clamping voltage increases with junction temperature at a rate of +10.8 × 10⁻⁴ /°C. At 175 °C, VCL rises ~1.6% above its 25 °C value (246 V → ~250 V), remaining within safe margins for most 200–250 V-rated downstream components. This positive TC is inherent to silicon avalanche behavior and is factored into design margins.
1.5KE180CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AE, Axial
- Series:
- 1.5KE
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- 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:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 362.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE180CA FAQ
1.How can I place an order for 1.5KE180CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE180CA 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 reliable?
The price and inventory of 1.5KE180CA 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 is usually 5 days.
3.What payment methods are accepted for 1.5KE180CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE180CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE180CA?
1.5KE180CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE180CA 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?
For technical support, including 1.5KE180CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE180CA requirements.
6.How does Aetrix verify that 1.5KE180CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE180CA 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 meets industry standards.
7.What is the process for return or replacement of 1.5KE180CA?
All 1.5KE180CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE180CA, 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 part is unused and in its original packaging.
Return procedure for 1.5KE180CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE180CA 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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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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