20CTH03-1 Equivalent & Substitute Parts

Part Overview

The 20CTH03-1 is a general-purpose diode array manufactured by Vishay General Semiconductor - Diodes Division, configured as a 1 Pair Common Cathode rectifier with 300 V reverse voltage rating and 10 A average rectified current per diode. The device is housed in a TO-262-3 Long Leads package (I2PAK, TO-262AA) for through-hole mounting applications.

The 20CTH03-1 is classified as obsolete. Identification of equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array configuration.

Substiute Parts

20CTH03-1

Vishay General Semiconductor - Diodes DivisionIn Stock: 83120CTH03-1 Datasheet

Current PartRFQ

VS-20CTH03-1-M3

Vishay General Semiconductor - Diodes DivisionIn Stock: 1958VS-20CTH03-1-M3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 20CTH03-1 are identified based on electrical and mechanical parameter equivalence. The substitution criteria are strictly limited to the following parameters:

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 300 V
• Current - Average Rectified (Io) (per Diode): 10 A
• Voltage - Forward (Vf) (Max) @ If: 1.25 V @ 10 A
• Reverse Recovery Time (trr): 35 ns
• Current - Reverse Leakage @ Vr: 20 µA @ 300 V
• Operating Temperature - Junction: -65°C ~ 175°C
• Mounting Type: Through Hole
• Package / Case: TO-262-3 Long Leads, I2PAK, TO-262AA
• Series: FRED Pt®
• Technology: Standard

Substitute parts must match all electrical parameters and maintain identical mechanical compatibility through the same package designation and through-hole mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

The VS-20CTH03-1-M3 is a direct parametric equivalent to the 20CTH03-1 across all electrical and mechanical specifications. Both devices are manufactured by Vishay General Semiconductor - Diodes Division within the FRED Pt® series and maintain identical performance characteristics for voltage, current, switching speed, and thermal operating range.

The primary distinction between the two parts is product status and regulatory compliance. The 20CTH03-1 is classified as obsolete and carries RoHS non-compliant status. The VS-20CTH03-1-M3 is an active product with ROHS3 compliance certification, making it suitable for applications subject to RoHS directives and modern supply chain requirements.

Both devices carry identical REACH Unaffected and EAR99 export classification designations. Moisture sensitivity levels are equivalent at MSL 1 (Unlimited). The packaging designation difference (TO-262-3 versus TO-262AA) reflects supplier nomenclature variation for the same physical package configuration and does not affect mechanical or electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Are the 20CTH03-1 and VS-20CTH03-1-M3 electrically interchangeable?

A: Yes. Both devices are parametrically equivalent across all electrical specifications, including reverse voltage rating (300 V), average rectified current (10 A per diode), forward voltage drop (1.25 V @ 10 A), reverse recovery time (35 ns), reverse leakage current (20 µA @ 300 V), and operating temperature range (-65°C ~ 175°C).

Q: Can the VS-20CTH03-1-M3 be used as a direct replacement in existing PCB designs?

A: Yes. Both devices utilize identical through-hole mounting in the TO-262-3 Long Leads package (I2PAK, TO-262AA) configuration. Pin-to-pin compatibility and board layout requirements are identical. No PCB redesign is required.

Q: What is the significance of the RoHS compliance difference?

A: The 20CTH03-1 is RoHS non-compliant, while the VS-20CTH03-1-M3 is ROHS3 compliant. For applications or supply chains subject to RoHS directives, the VS-20CTH03-1-M3 is the appropriate selection. Both devices maintain identical REACH Unaffected status.

Q: Why is the 20CTH03-1 classified as obsolete?

A: The 20CTH03-1 is listed as obsolete by the manufacturer. The VS-20CTH03-1-M3 is the active equivalent product and is the recommended selection for new designs and ongoing production requirements.

Q: Are there packaging differences between the two parts?

A: Both devices are housed in the TO-262-3 Long Leads package (I2PAK, TO-262AA). The supplier device package designation differs (TO-262-3 versus TO-262AA), but this reflects nomenclature variation and does not indicate physical or functional differences. Mechanical compatibility is maintained.

Q: What is the difference between the standard packaging and tube packaging?

A: The 20CTH03-1 is supplied in standard packaging, while the VS-20CTH03-1-M3 is supplied in tube packaging. Both packaging formats contain identical components with equivalent electrical and mechanical specifications. Packaging format selection depends on procurement and assembly process requirements.