NS8AT-E3/45 Equivalent & Substitute Parts

Part Overview

The NS8AT-E3/45 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This through-hole component is rated for 50 V DC reverse voltage and 8 A average rectified current in a TO-220AC package configuration. The part is currently in active product status with 758 units in stock. Substitute parts are necessary when the original part becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits selection from qualified equivalent components that meet the same electrical and mechanical specifications.

Substiute Parts

NS8AT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 825NS8AT-E3/45 Datasheet

Current PartRFQ

MUR805G

onsemiIn Stock: 2344MUR805G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NS8AT-E3/45 are qualified based on the following critical parameters:

Electrical Specifications:

• Voltage - DC Reverse (Vr) (Max): 50 V minimum
• Current - Average Rectified (Io): 8 A minimum
• Package / Case: TO-220-2 or equivalent through-hole configuration
• Mounting Type: Through Hole

Compliance & Environmental:

• RoHS3 Compliance required
• Operating Temperature Range: Must accommodate -55°C to 150°C minimum

The MUR805G qualifies as a substitute part because it meets or exceeds all critical electrical parameters (50 V reverse voltage, 8 A rectified current) and maintains through-hole TO-220-2 package compatibility. Both parts are RoHS3 compliant and suitable for the same circuit applications.

Parameter Comparison

Engineering Selection Recommendations

NS8AT-E3/45 (Primary Part): The NS8AT-E3/45 maintains active product status with established supply availability (758 units in stock). This part is suitable for applications requiring standard recovery rectification characteristics. RoHS3 compliance and REACH unaffected status confirm regulatory alignment for current manufacturing standards.

MUR805G (Substitute Part): The MUR805G is classified as obsolete but remains available in higher inventory quantities (2250 units). This part provides equivalent electrical performance with measurable improvements in forward voltage drop (975 mV versus 1.1 V) and reverse leakage current (5 µA versus 10 µA). The faster recovery time (≤500ns versus >500ns) and extended operating temperature range (-65°C to 175°C versus -55°C to 150°C) represent performance enhancements. RoHS3 compliance and REACH unaffected status match the primary part. Selection of MUR805G is appropriate when inventory availability or performance improvements justify use of an obsolete-status component.

Frequently Asked Questions (FAQ)

Q: Can MUR805G directly replace NS8AT-E3/45 in existing designs?

A: Yes. Both parts share identical voltage (50 V) and current (8 A) ratings, matching TO-220-2 package configurations, and through-hole mounting. Electrical compatibility is confirmed across all critical parameters.

Q: What are the performance differences between these parts?

A: The MUR805G exhibits lower forward voltage drop (975 mV versus 1.1 V at 8 A), lower reverse leakage current (5 µA versus 10 µA at 50 V), and faster recovery time (≤500ns versus >500ns). These represent performance improvements rather than limitations.

Q: Why is MUR805G listed as obsolete if it is a suitable substitute?

A: Obsolete status indicates the manufacturer has discontinued active production and support. However, existing inventory remains available for purchase. Obsolete parts are suitable for applications where current supply exists and future replenishment is not required.

Q: Are there package compatibility concerns between TO-220AC and TO-220-2?

A: The NS8AT-E3/45 uses TO-220AC packaging while MUR805G uses TO-220-2 packaging. Both are through-hole configurations with compatible pinout and thermal characteristics for standard TO-220 footprints. Mechanical fit and electrical connection are equivalent.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both NS8AT-E3/45 and MUR805G are RoHS3 compliant and REACH unaffected, confirming compliance with current environmental and hazardous substance regulations.

Q: What is the temperature operating range difference?

A: NS8AT-E3/45 operates from -55°C to 150°C junction temperature. MUR805G extends this range to -65°C to 175°C. Applications requiring operation below -55°C or above 150°C benefit from MUR805G selection.