UGE8HT-E3/45 Equivalent & Substitute Parts

Part Overview

The UGE8HT-E3/45 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 500 V DC reverse voltage and 8 A average rectified current in a Through Hole TO-220AC package. This component is classified as Obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

UGE8HT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 918UGE8HT-E3/45 Datasheet

Current PartRFQ

VS-ETH0806-M3

Vishay General Semiconductor - Diodes DivisionIn Stock: 3384VS-ETH0806-M3 Datasheet

MFR RecommendedRFQ

SFA807G C0G

Taiwan Semiconductor CorporationIn Stock: 1051SFA807G C0G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UGE8HT-E3/45 are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

• Mounting Type: Through Hole
• Package / Case: TO-220-2 (TO-220AC supplier package)
• Current - Average Rectified (Io): 8 A minimum
• Voltage - DC Reverse (Vr): Equal to or greater than 500 V
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant

Acceptable Variation Parameters:

• Voltage - Forward (Vf): May exceed 1.75 V within design tolerance
• Reverse Recovery Time (trr): May vary within fast recovery classification
• Current - Reverse Leakage: May be lower than 30 µA
• Operating Temperature Range: May exceed -55°C to 150°C

Substitute parts meeting these criteria are electrically and mechanically compatible for direct replacement in applications designed for the UGE8HT-E3/45.

Parameter Comparison

Engineering Selection Recommendations

VS-ETH0806-M3 (Vishay General Semiconductor - Diodes Division)

The VS-ETH0806-M3 is an Active product from the same manufacturer as the obsolete UGE8HT-E3/45. This part provides 600 V reverse voltage rating, exceeding the original 500 V specification, and maintains the 8 A current rating. The faster reverse recovery time (21 ns versus 25 ns) and lower reverse leakage current (12 µA versus 30 µA) represent improved electrical performance. Extended operating temperature range (-65°C to 175°C versus -55°C to 150°C) provides broader thermal operating capability. All compliance certifications (ROHS3, REACH Unaffected) are maintained. This part is suitable for direct replacement in applications where the higher voltage rating does not create design conflicts.

SFA807G C0G (Taiwan Semiconductor Corporation)

The SFA807G C0G is an Active product maintaining the original 500 V reverse voltage and 8 A current ratings. Forward voltage (1.7 V @ 8 A) is nearly identical to the original specification (1.75 V @ 8 A). Reverse leakage current (10 µA @ 500 V) is significantly lower than the original (30 µA @ 500 V). Reverse recovery time (35 ns) is longer than the original (25 ns) but remains within the fast recovery classification. Operating temperature range matches the original specification (-55°C to 150°C). All compliance certifications (ROHS3, REACH Unaffected) are maintained. This part is suitable for direct replacement in applications requiring electrical parameters closely matched to the original specification.

Frequently Asked Questions (FAQ)

Q: Can VS-ETH0806-M3 be used as a direct replacement for UGE8HT-E3/45?

A: Yes. The VS-ETH0806-M3 meets all critical substitution parameters: Through Hole mounting, TO-220AC package, 8 A current rating, fast recovery speed classification, and ROHS3 compliance. The 600 V reverse voltage rating exceeds the original 500 V requirement and is compatible with applications designed for 500 V operation.

Q: Can SFA807G C0G be used as a direct replacement for UGE8HT-E3/45?

A: Yes. The SFA807G C0G meets all critical substitution parameters: Through Hole mounting, TO-220AC package, 8 A current rating, fast recovery speed classification, and ROHS3 compliance. Electrical parameters closely match the original specification, with improved reverse leakage characteristics.

Q: What is the difference between the two substitute parts?

A: VS-ETH0806-M3 provides higher reverse voltage rating (600 V versus 500 V) and faster reverse recovery time (21 ns versus 35 ns). SFA807G C0G maintains the original 500 V rating with electrical parameters more closely matched to the original part. Selection depends on application voltage requirements and switching speed performance needs.

Q: Are both substitute parts available in the same packaging as the original?

A: Yes. Both substitute parts use TO-220-2 package / case with TO-220AC supplier device package, identical to the original UGE8HT-E3/45.

Q: Do the substitute parts have the same temperature operating range?

A: SFA807G C0G matches the original operating range (-55°C to 150°C). VS-ETH0806-M3 provides an extended range (-65°C to 175°C), offering broader thermal capability.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both VS-ETH0806-M3 and SFA807G C0G are ROHS3 Compliant and REACH Unaffected, matching the compliance status of the original UGE8HT-E3/45.

Q: What is the significance of the reverse recovery time difference?

A: Reverse recovery time (trr) affects switching speed in rectifier applications. The original UGE8HT-E3/45 has 25 ns trr. VS-ETH0806-M3 offers faster recovery (21 ns), while SFA807G C0G has slower recovery (35 ns). All three remain classified as Fast Recovery (≤ 500ns, > 200mA), suitable for the same application categories.

Q: Can I use these parts interchangeably in my circuit?

A: Both substitute parts are electrically and mechanically compatible with the original UGE8HT-E3/45 within the specified parameter ranges. Circuit-level compatibility depends on application-specific requirements for voltage rating, forward voltage drop, and switching characteristics. Verify that your application design tolerates the parameter variations listed in the Parameter Comparison table.