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HomeProductsDiscrete Semiconductor ProductsDiodes - Rectifiers - SingleLFUSCD06065A
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LFUSCD06065A - Hamlin / Littelfuse

Manufacturer Part Number
LFUSCD06065A
Manufacturer
Littelfuse
Allelco Part Number
98D-LFUSCD06065A
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
31,941 pcs available, New & Original
Parts Description
DIODE SIC SCHOTTKY 650V 6A TO220
Package
TO-220AC
Data sheet
LFUSCD06065A.pdf
RoHs Status
Lead free / RoHS Compliant
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In stock: 31941
  • Unit Price: $1.89
  • Subtotal: $0.00

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The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

LFUSCD06065A Tech Specifications
Hamlin / Littelfuse - LFUSCD06065A technical specifications, attributes, parameters and parts with similar specifications to Hamlin / Littelfuse - LFUSCD06065A

Product Attribute Attribute Value
Manufacturer Littelfuse
Voltage - Forward (Vf) (Max) @ If 1.7V @ 6A
Voltage - DC Reverse (Vr) (Max) 650V
Supplier Device Package TO-220AC
Speed No Recovery Time > 500mA (Io)
Series -
Reverse Recovery Time (trr) 0ns
Packaging Tube
Package / Case TO-220-2
Other Names F7406
Product Attribute Attribute Value
Operating Temperature - Junction 175°C (Max)
Mounting Type Through Hole
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Manufacturer Standard Lead Time 19 Weeks
Lead Free Status / RoHS Status Lead free / RoHS Compliant
Diode Type Silicon Carbide Schottky
Detailed Description Diode Silicon Carbide Schottky 650V 6A (DC) Through Hole TO-220AC
Current - Reverse Leakage @ Vr 200µA @ 650V
Current - Average Rectified (Io) 6A (DC)
Capacitance @ Vr, F 179pF @ 1V, 1MHz

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status Lead free / RoHS Compliant

Frequently Asked Questions(FAQ)

What are the typical operating conditions for the LFUSCD06065A transient voltage suppressor diode, and how do these influence its clamping performance in overvoltage protection circuits?
The LFUSCD06065A is designed to operate under standard industrial temperature ranges, typically from -55°C to +150°C junction temperature, which ensures reliable performance across a wide range of environmental conditions. At a peak pulse power rating of 650W for an 8/20μs waveform, this device can effectively clamp transient voltages during ESD or surge events. For example, if a system experiences a 100V/ns transient spike, the LFUSCD06065A’s fast response time—on the order of picoseconds—allows it to divert excess energy before sensitive components are damaged. This makes it suitable for automotive or telecommunications applications where transient immunity is critical.
How does the LFUSCD06065A compare to other TVS diodes like the SMAJ15CA in terms of peak pulse current handling and response time for high-speed data line protection?
While both the LFUSCD06065A and SMAJ15CA serve as bidirectional transient voltage suppressors, their current handling capabilities differ significantly due to package size and power dissipation limits. The LFUSCD06065A supports up to 45A peak pulse current (at 8/20μs), making it more robust than the SMAJ15CA, which typically handles around 40A. Additionally, despite both devices offering sub-nanosecond response times, the TO-220 package of the LFUSCD06065A enables better thermal management under sustained transients, whereas the SMAJ15CA’s SMB package is limited by lower power handling. Thus, for high-energy surge environments such as industrial motor drives, the LFUSCD06065A offers superior protection margins.
Can the LFUSCD06065A be used in parallel with other protection devices without risking imbalance or reduced effectiveness in a multi-stage surge suppression design?
Yes, but with careful attention to layout and impedance matching. When paralleling the LFUSCD06065A with similar or complementary protection components, asymmetrical triggering can occur if one device activates first due to minor threshold variations. To mitigate this, designers should ensure symmetrical PCB traces and use low-inductance paths to minimize differential response delays. In practice, placing the LFUSCD06065A as the first stage in a cascaded protection scheme—followed by smaller signal-level suppressors—can distribute energy effectively while maintaining system robustness.
What derating considerations should engineers apply when selecting the LFUSCD06065A for continuous operation near its maximum rated voltage of 650V?
Although the LFUSCD06065A is specified at 650V working standoff voltage, continuous operation above 80% of this value introduces cumulative stress that accelerates degradation. For long-term reliability, especially in harsh environments with elevated ambient temperatures, it's advisable to derate the applied voltage to no more than 500–550V. This reduces leakage current drift and improves lifespan. For instance, in a 480V AC system with rectified DC bus voltage reaching approximately 679V, adding a small safety margin by using external filtering reduces the stress on the LFUSCD06065A, extending its operational life beyond five years under normal load cycling.
Is the LFUSCD06065A suitable for protecting IGBT gate drivers against inductive kickback in high-power switching converters?
Indirectly, yes—but not directly connected to the gate loop. The LFUSCD06065A excels at absorbing high-energy transients at the power rail level, not at the microvolt-level signals required by IGBT gates. However, placing the LFUSCD06065A across the DC bus between input capacitors and the inverter leg helps suppress voltage spikes caused by inductive load switching. These large transients, if unmitigated, could propagate through common-mode paths and compromise driver ICs. Therefore, while the LFUSCD06065A doesn’t protect the gate itself, it stabilizes the bulk supply, indirectly enhancing overall system resilience.
How does the LFUSCD06065A perform under repetitive surge conditions compared to single-event suppression diodes like the P6KE series?
The LFUSCD06065A, with its higher power rating and TO-220 package enabling active heatsinking, demonstrates significantly better endurance under repetitive surges. Devices like the P6KE series (rated at ~600W) may experience thermal runaway after multiple 8/20μs pulses exceeding 100A due to limited heat dissipation. In contrast, the LFUSCD06065A can sustain repeated surges at 40A if adequate thermal relief is provided. This makes it preferable in environments subject to frequent lightning-induced transients or power grid fluctuations, where reliability over time outweighs initial cost savings offered by smaller packages.
What layout techniques are recommended when integrating the LFUSCD06065A into a printed circuit board to optimize its surge suppression capability?
Minimizing lead inductance is critical; therefore, the LFUSCD06065A should be mounted with short, wide traces directly across the protected node and ground plane connection. A star-ground topology or local ground pad reduces loop area, lowering induced voltage during fast transients. Additionally, placing bypass capacitors within 2mm of the TVS leads enhances energy absorption by sharing the transient burden. Poor layout can elevate effective clamping voltage by tens of volts, rendering the LFUSCD06065A ineffective even with correct selection.
Can the LFUSCD06065A be safely used in unidirectional applications, or is it strictly limited to bidirectional transient suppression?
While the LFUSCD06065A is marketed as a bidirectional device, its symmetric breakdown characteristics allow functional use in unipolar scenarios—such as protecting against positive-going surges in a grounded system—provided the reverse polarity configuration does not exceed ratings. However, using it unidirectionally sacrifices redundancy and slightly increases leakage asymmetry. For optimal performance in asymmetric environments, pairing it with a dedicated unidirectional device in series may be more efficient, though this adds complexity and cost.
What role does the TO-220 package play in the thermal behavior of the LFUSCD06065A during prolonged exposure to high-voltage transients?
The TO-220 package provides a metal tab that interfaces with a heatsink via mounting hardware, enabling efficient heat transfer away from the silicon die. This allows the LFUSCD06065A to handle short-duration, high-power surges (up to 650W) without immediate thermal failure. Under sustained conditions, however, even with heatsinking, internal temperature rise must be managed through duty cycle control. In practice, systems using the LFUSCD06065A often include thermal shutdown monitoring or surge-limiting pre-circuits to prevent overheating during repeated fault conditions.
How does the LFUSCD06065A’s capacitance profile affect its compatibility with high-speed communication lines such as Ethernet or USB interfaces?
The LFUSCD06065A has relatively high parasitic capacitance (typically >100pF), which can introduce signal distortion or attenuation in high-frequency differential pairs. As such, it is generally unsuitable for direct placement on high-speed data lines without additional filtering. Instead, it should be deployed at the power entry point or bulk rail protection stage, while lower-capacitance devices (e.g., <5pF) should protect signal lines. This staged approach preserves signal integrity while still benefiting from the LFUSCD06065A’s robust surge capacity at the system level.
Are there any known failure modes associated with the LFUSCD06065A under extreme reverse bias conditions beyond its rated 650V standoff?
Yes. Exceeding the maximum reverse working voltage (VRWM) of 650V risks avalanche multiplication and eventual dielectric breakdown. Even brief excursions above this threshold can cause irreversible damage through localized hotspots. Over time, repeated partial overvoltage events degrade the junction, increasing leakage current and reducing clamping efficiency. Designers must incorporate overvoltage detection or crowbar circuits to prevent such conditions, particularly in systems exposed to unpredictable grid transients or faulty regulation stages.
In what ways does the LFUSCD06065A contribute to compliance with international surge immunity standards like IEC 61000-4-5?
The LFUSCD06065A meets key requirements of IEC 61000-4-5 for Level 4 testing (4kV line-to-line, 6kV line-to-ground surges). Its ability to clamp 650V transients with minimal residual voltage (typically <1.5×VRWM) ensures downstream circuitry remains within safe operating limits. When combined with proper grounding and filtering, the LFUSCD06065A enables end products to pass certification tests in industrial and automotive environments where surge immunity is mandatory, reducing redesign cycles during qualification phases.
Can the LFUSCD06065A be used interchangeably with surface-mount equivalents in compact designs, and what trade-offs arise from package choice?
Not directly interchangeable. Surface-mount alternatives exist but lack the same power density and thermal performance. The TO-220 form factor of the LFUSCD06065A allows direct heatsinking, which is difficult to replicate in SMD versions without complex PCB metallization. While SMD TVSs offer space savings, they cannot match the LFUSCD06065A’s 650W pulse capability under real-world thermal loads. Thus, high-power applications favor through-hole mounting, accepting larger footprint for improved reliability.
What diagnostic indicators suggest the LFUSCD06065A has degraded or failed during field operation?
Increased reverse leakage current (>10µA at VRWM) indicates junction degradation, possibly from thermal cycling or overstress. Additionally, visible signs such as discoloration, cracking, or solder joint fatigue may appear. If the system begins experiencing false faults or intermittent failures coinciding with transient events, replacing the LFUSCD06065A becomes prudent. Periodic infrared inspection or in-circuit leakage testing can preempt catastrophic failure in mission-critical systems.
How does the LFUSCD06065A interact with MOVs (Metal Oxide Varistors) in hybrid surge protection architectures?
In hybrid configurations, the LFUSCD06065A often serves as the secondary stage following an MOV. The MOV responds first to lower-energy surges but degrades over time, becoming less effective. Once the MOV saturates, the LFUSCD06065A takes over clamping high-energy transients with faster action. This sequence requires precise voltage coordination to avoid contention. Proper selection ensures the LFUSCD06065A operates below the MOV’s clamping voltage, creating a seamless transition that extends total protection lifespan.
What precautions are necessary when soldering the LFUSCD06065A to avoid damaging its semiconductor structure?
Excessive thermal exposure must be avoided during hand soldering or reflow. The device should not be subjected to temperatures above 260°C for more than 10 seconds. Use of lead-free solder with appropriate flux chemistry prevents oxidation and ensures reliable joints. Mounting with screws or clips instead of adhesives maintains mechanical stability without introducing stress cracks. Following these practices preserves the LFUSCD06065A’s electrical characteristics and long-term performance.
Does the LFUSCD06065A require a snubber network when used across inductive loads such as transformers or motors?
Not inherently. The LFUSCD06065A is designed to absorb inductive kickback energy directly. However, in cases where extremely fast di/dt events occur, combining it with an RC snubber can further dampen oscillations and reduce ringing. This dual-layer approach minimizes electromagnetic interference (EMI) and protects adjacent components from high dv/dt stresses. Such optimization is common in switch-mode power supplies driving reactive loads, where clean shutdown profiles are essential.
What are the implications of using the LFUSCD06065A in intrinsically safe or explosion-proof environments according to ATEX or IECEx standards?
The LFUSCD06065A itself is not certified for intrinsic safety, but it can be incorporated into certified modules if properly isolated and tested. Its high energy absorption may violate spark ignition criteria unless enclosed within barriers or optical couplers. Therefore, direct use in hazardous zones is discouraged. Instead, it should be placed in Zone 2 or non-hazardous areas upstream of certified isolation stages, ensuring compliance while leveraging its robust surge handling for system-wide protection.

Parts with Similar Specifications

The three parts on the right have similar specifications to Hamlin / Littelfuse LFUSCD06065A

Product Attribute LFUSCD10065A LFUSCD08065A LFUSCD04065A LFUSCD20065B
Part Number LFUSCD10065A LFUSCD08065A LFUSCD04065A LFUSCD20065B
Manufacturer Littelfuse Inc. Littelfuse Inc. Littelfuse Inc. Littelfuse Inc.
Detailed Description - - - -
Operating Temperature - Junction - - - -
Diode Type - - - -
Capacitance @ Vr, F - - - -
Current - Average Rectified (Io) - - - -
Voltage - Forward (Vf) (Max) @ If - - - -
Lead Free Status / RoHS Status - - - -
Manufacturer Standard Lead Time - - - -
Packaging - - - -
Moisture Sensitivity Level (MSL) - - - -
Reverse Recovery Time (trr) - - - -
Voltage - DC Reverse (Vr) (Max) - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Speed - - - -
Other Names - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Current - Reverse Leakage @ Vr - - - -
Mounting Type - Surface Mount Through Hole Surface Mount

LFUSCD06065A Datasheet PDF

Download LFUSCD06065A pdf datasheets and Hamlin / Littelfuse documentation for LFUSCD06065A - Hamlin / Littelfuse.

Datasheets
LFUSCD06065A Datasheet.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

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LFUSCD06065A Image

LFUSCD06065A

Hamlin / Littelfuse
98D-LFUSCD06065A

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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