MBR845RL Equivalent & Substitute Parts

Part Overview

The MBR845RL is a Schottky rectifier diode manufactured by onsemi, rated for 45 V DC reverse voltage and 8 A average rectified current in a through-hole axial package (DO-201AA/DO-27). This component is classified as obsolete, indicating discontinuation from active production. Identification of equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production builds, repairs, and legacy system support.

Substiute Parts

MBR845RL

onsemiIn Stock: 1648MBR845RL Datasheet

Current PartRFQ

80SQ045NRLG

onsemiIn Stock: 822980SQ045NRLG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MBR845RL are identified based on electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 45 V
• Current - Average Rectified (Io): 8 A
• Voltage - Forward (Vf) (Max) @ If: 550 mV @ 8 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 1 mA @ 45 V
• Operating Temperature - Junction: -65°C ~ 125°C

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: DO-201AA, DO-27, Axial
• Technology: Schottky

The 80SQ045NRLG meets all specified electrical and mechanical parameters and is classified as an active product with current manufacturing status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 80SQ045NRLG is the direct electrical and mechanical equivalent to the MBR845RL. Selection of the 80SQ045NRLG is supported by the following factors:

Product Status: The 80SQ045NRLG is classified as an active product with current manufacturing availability, whereas the MBR845RL is obsolete. Active product status ensures long-term supply chain continuity and access to technical support.

Compliance Certifications: The 80SQ045NRLG is ROHS3 compliant, whereas the MBR845RL is RoHS non-compliant. This compliance improvement aligns with current regulatory requirements for electronic components in regulated markets.

Electrical Equivalence: All critical electrical parameters—reverse voltage rating, average rectified current, forward voltage drop, recovery speed, reverse leakage current, and operating temperature range—are identical between the two parts.

Mechanical Compatibility: Both parts utilize identical through-hole axial packaging (DO-201AA/DO-27), ensuring direct mechanical compatibility in existing PCB designs without layout modifications.

Inventory Status: The 80SQ045NRLG is available in higher inventory quantities (8200 pcs) compared to the MBR845RL (1600 pcs), supporting both immediate procurement and long-term supply security.

Frequently Asked Questions (FAQ)

Q: Can the 80SQ045NRLG be used as a direct replacement for the MBR845RL in existing designs?

A: Yes. The 80SQ045NRLG is electrically and mechanically equivalent to the MBR845RL. All electrical parameters—reverse voltage, forward current, forward voltage drop, recovery speed, and leakage current—are identical. Both parts use the same through-hole axial package (DO-201AA/DO-27), enabling direct PCB substitution without design modifications.

Q: What is the primary reason for substituting the MBR845RL?

A: The MBR845RL is classified as obsolete and no longer in active production. The 80SQ045NRLG provides equivalent electrical and mechanical performance while maintaining active manufacturing status and improved regulatory compliance (ROHS3).

Q: Are there any compliance differences between these parts?

A: Yes. The MBR845RL is RoHS non-compliant, while the 80SQ045NRLG is ROHS3 compliant. Both parts are REACH unaffected and classified under ECCN EAR99. The improved RoHS compliance of the 80SQ045NRLG aligns with current regulatory requirements in most markets.

Q: Do these parts have identical thermal characteristics?

A: Yes. Both parts operate across the same junction temperature range of -65°C to 125°C, ensuring equivalent thermal performance in circuit applications.

Q: What is the difference in packaging between these parts?

A: Both parts are supplied in through-hole axial packages (DO-201AA/DO-27). The MBR845RL is supplied in standard packaging, while the 80SQ045NRLG is supplied in Cut Tape (CT) format. This packaging difference does not affect electrical or mechanical compatibility; it only affects handling and storage logistics.

Q: Are the forward voltage characteristics identical?

A: Yes. Both parts specify a maximum forward voltage of 550 mV at 8 A, ensuring identical voltage drop performance in rectification circuits.

Q: Can the 80SQ045NRLG handle the same current levels as the MBR845RL?

A: Yes. Both parts are rated for 8 A average rectified current with identical reverse leakage characteristics (1 mA @ 45 V), ensuring equivalent current handling and reliability.