LSC04065Q8 Equivalent & Substitute Parts

Part Overview

The LSC04065Q8 is a Silicon Carbide (SiC) Schottky diode manufactured by Diodes Incorporated, rated for 650 V DC reverse voltage and 4 A average rectified current in a surface mount DFN8080 package. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and repair applications.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	650 V
Current - Average Rectified (Io)	4 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 4 A
Reverse Recovery Time (trr)	0 ns
Technology	SiC (Silicon Carbide) Schottky
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 175°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LSC04065Q8 is determined by electrical and thermal equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 650 V minimum
Current - Average Rectified (Io): 4 A minimum
Voltage - Forward (Vf) (Max) @ If: 1.7 V or lower @ 4 A
Reverse Recovery Time (trr): 0 ns (no recovery time requirement)
Technology: SiC (Silicon Carbide) Schottky

Thermal & Mechanical Equivalence Criteria:

Operating Temperature - Junction: -55°C ~ 175°C minimum
Mounting Type: Surface Mount
Package Classification: 4-PowerTSFN compatible footprint

Compliance Criteria:

RoHS3 Compliant status required

The IDL04G65C5XUMA2 meets all substitution criteria and is classified as an active product with enhanced availability.

Parameter Comparison

Parameter	LSC04065Q8 (Diodes Inc.)	IDL04G65C5XUMA2 (Infineon)	Match Status
Voltage - DC Reverse (Vr) (Max)	650 V	650 V	Equivalent
Current - Average Rectified (Io)	4 A	4 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 4 A	1.7 V @ 4 A	Equivalent
Reverse Recovery Time (trr)	0 ns	0 ns	Equivalent
Technology	SiC (Silicon Carbide) Schottky	SiC (Silicon Carbide) Schottky	Equivalent
Current - Reverse Leakage @ Vr	170 µA @ 650 V	70 µA @ 650 V	Improved
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	4-PowerTSFN	4-PowerTSFN	Equivalent
Operating Temperature - Junction	-55°C ~ 175°C	-55°C ~ 175°C	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Improved

Engineering Selection Recommendations

The IDL04G65C5XUMA2 manufactured by Infineon Technologies is the direct functional equivalent for the obsolete LSC04065Q8. Selection of this substitute part is based on the following engineering factors:

Electrical Compatibility: The IDL04G65C5XUMA2 maintains identical voltage and current ratings (650 V, 4 A) with matching forward voltage characteristics (1.7 V @ 4 A) and zero reverse recovery time, ensuring direct functional replacement in existing circuit designs.

Thermal Performance: Operating temperature range (-55°C ~ 175°C) is identical, confirming thermal compatibility across all specified operating conditions.

Compliance Status: Both parts maintain ROHS3 compliance. The IDL04G65C5XUMA2 additionally provides REACH Unaffected status and EAR99 ECCN classification, supporting broader regulatory and export requirements.

Product Availability: The IDL04G65C5XUMA2 is classified as active with 4629 units in stock, compared to the obsolete status of the LSC04065Q8 with limited remaining inventory (798 units). This ensures long-term supply chain continuity.

Performance Enhancement: The IDL04G65C5XUMA2 demonstrates improved reverse leakage current (70 µA @ 650 V versus 170 µA @ 650 V), providing superior leakage characteristics within the CoolSiC™+ series.

Package Compatibility: Both parts utilize the 4-PowerTSFN package classification with identical footprint geometry, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the IDL04G65C5XUMA2 be used as a direct replacement for the LSC04065Q8 without circuit modification?

A: Yes. The IDL04G65C5XUMA2 is electrically and mechanically equivalent across all critical parameters: 650 V reverse voltage, 4 A current rating, 1.7 V forward voltage @ 4 A, and identical operating temperature range. The 4-PowerTSFN package footprint is identical, permitting direct PCB substitution.

Q: What is the difference in reverse leakage current between these parts?

A: The IDL04G65C5XUMA2 exhibits 70 µA reverse leakage at 650 V, compared to 170 µA for the LSC04065Q8. This represents improved leakage performance and may result in reduced power dissipation in high-voltage blocking applications.

Q: Are there packaging differences between the LSC04065Q8 and IDL04G65C5XUMA2?

A: Both parts use the 4-PowerTSFN package classification. The LSC04065Q8 is supplied as loose components, while the IDL04G65C5XUMA2 is supplied in Tape & Reel (TR) format. The physical footprint and pin configuration are identical, ensuring PCB compatibility.

Q: What is the product status difference, and why does it matter?

A: The LSC04065Q8 is classified as obsolete, indicating discontinued manufacturing and limited remaining inventory. The IDL04G65C5XUMA2 is active with full manufacturing support and 4629 units in stock, ensuring reliable supply for current and future production requirements.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the LSC04065Q8 and IDL04G65C5XUMA2 are ROHS3 compliant. The IDL04G65C5XUMA2 additionally provides REACH Unaffected status and EAR99 ECCN classification, supporting expanded regulatory and export requirements.

Q: Is the reverse recovery time specification identical?

A: Yes. Both parts specify 0 ns reverse recovery time with no recovery time requirement above 500 mA, confirming identical switching performance characteristics in SiC Schottky diode applications.

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