48CTQ060-1 Equivalent & Substitute Parts

Part Overview

The 48CTQ060-1 is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 60 V DC reverse voltage and 20 A average rectified current per diode. The device is packaged in a TO-262-3 Long Leads (I2PAK) through-hole format suitable for high-current rectification applications.

The 48CTQ060-1 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems utilizing this component.

Substiute Parts

48CTQ060-1

Vishay General Semiconductor - Diodes DivisionIn Stock: 341748CTQ060-1 Datasheet

Current PartRFQ

MBRB30H60CT-1G

onsemiIn Stock: 788MBRB30H60CT-1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 48CTQ060-1 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Diode Configuration: 1 Pair Common Cathode (must match exactly)
• Technology: Schottky (must match exactly)
• Voltage - DC Reverse (Vr) (Max): 60 V (must match or exceed)
• Package / Case: TO-262-3 Long Leads, I2PAK, TO-262AA (must match exactly for mechanical compatibility)
• Mounting Type: Through Hole (must match exactly)

Allowable Variation Parameters:

• Current - Average Rectified (Io) (per Diode): Substitute must meet or exceed 20 A requirement
• Voltage - Forward (Vf) (Max) @ If: Substitute must not exceed original specification
• Current - Reverse Leakage @ Vr: Substitute must not exceed original specification
• Operating Temperature - Junction: Substitute must encompass or exceed original range

The MBRB30H60CT-1G qualifies as a substitute based on matching all critical parameters while meeting allowable variation criteria.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: Both the 48CTQ060-1 and MBRB30H60CT-1G are classified as obsolete. The MBRB30H60CT-1G offers improved availability with 770 units in stock compared to 3353 units of the original part.

Compliance and Certification: The MBRB30H60CT-1G provides ROHS3 compliance, whereas the 48CTQ060-1 is RoHS non-compliant. Both components are REACH Unaffected and classified under ECCN EAR99. Selection of the MBRB30H60CT-1G supports compliance with modern environmental regulations.

Current Rating Consideration: The primary electrical difference is the average rectified current rating: the 48CTQ060-1 is rated at 20 A per diode, while the MBRB30H60CT-1G is rated at 15 A per diode. Applications operating at or below 15 A per diode can utilize the substitute without derating. Applications requiring the full 20 A rating must retain the original part or identify alternative sources.

Thermal Performance: The MBRB30H60CT-1G supports an extended junction temperature range (-55°C ~ 175°C) compared to the original (-55°C ~ 150°C), providing improved thermal margin in high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the MBRB30H60CT-1G directly replace the 48CTQ060-1 in all applications?

A: Direct replacement is possible only when application current requirements do not exceed 15 A per diode. The MBRB30H60CT-1G is rated for 15 A average rectified current, compared to the 48CTQ060-1 at 20 A. Applications requiring the full 20 A rating must use the original part or identify alternative sources.

Q: Are the packages mechanically identical?

A: Yes. Both components use the TO-262-3 Long Leads (I2PAK, TO-262AA) through-hole package. Mechanical compatibility and PCB layout are identical.

Q: What is the significance of the lower reverse leakage current in the MBRB30H60CT-1G?

A: The MBRB30H60CT-1G exhibits 300 µA reverse leakage at 60 V, compared to 2 mA for the 48CTQ060-1. Lower reverse leakage reduces standby power dissipation and improves circuit efficiency, particularly in low-current or standby operating modes.

Q: Does the slightly higher forward voltage of the MBRB30H60CT-1G affect circuit performance?

A: The forward voltage difference is 10 mV (620 mV vs. 610 mV), measured at different current levels (15 A vs. 20 A respectively). This difference is negligible in most rectification applications and does not require circuit redesign.

Q: What is the advantage of the extended temperature range in the MBRB30H60CT-1G?

A: The MBRB30H60CT-1G supports junction temperatures up to 175°C, compared to 150°C for the 48CTQ060-1. This extended range provides additional thermal margin in high-temperature environments and improves reliability in applications with elevated ambient or self-heating conditions.

Q: Is the MBRB30H60CT-1G RoHS compliant?

A: Yes. The MBRB30H60CT-1G is ROHS3 compliant, whereas the 48CTQ060-1 is RoHS non-compliant. Selection of the substitute supports compliance with current environmental regulations and may be required for new designs or regulated markets.