NRVB2045EMFST1G Equivalent & Substitute Parts

Part Overview

The NRVB2045EMFST1G is an active Schottky rectifier diode manufactured by onsemi, designed for surface mount applications requiring 45V reverse voltage rating and 20A average rectified current capacity. This component is classified as a fast recovery diode with a maximum forward voltage of 640 mV at 20A and operates across a junction temperature range of -55°C to 150°C. The part is packaged in a 5-DFN (5x6) surface mount configuration with 5 leads.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity. Substitute parts maintain identical electrical performance characteristics and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

NRVB2045EMFST1G

onsemiIn Stock: 1638NRVB2045EMFST1G Datasheet

Current PartRFQ

NRVB2045EMFST3G

onsemiIn Stock: 1820NRVB2045EMFST3G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NRVB2045EMFST1G are identified based on strict electrical and mechanical parameter equivalence. The substitution logic is based on the following critical parameters:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 45 V
• Current - Average Rectified (Io): 20 A
• Voltage - Forward (Vf) (Max) @ If: 640 mV @ 20 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 400 µA @ 45 V
• Operating Temperature - Junction: -55°C to 150°C

Mechanical Parameters:

• Package / Case: 8-PowerTDFN, 5 Leads
• Supplier Device Package: 5-DFN (5x6) (8-SOFL)
• Mounting Type: Surface Mount
• Technology: Schottky

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Parts meeting all specified parameters are classified as direct parametric equivalents and may be substituted without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

Both the NRVB2045EMFST1G and NRVB2045EMFST3G are active products manufactured by onsemi with identical electrical and mechanical specifications. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Selection between these parts is based on inventory availability and procurement lead time. Both parts share the same base product number (NRVB2045) and are interchangeable at the circuit and board assembly level. No design modifications, simulation, or testing are required when substituting between these parts.

The 5-DFN (5x6) surface mount package is standard across both parts, ensuring compatibility with existing PCB layouts and assembly processes. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity restrictions during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can NRVB2045EMFST3G be used as a direct replacement for NRVB2045EMFST1G?

A: Yes. Both parts are parametric equivalents with identical electrical ratings (45V reverse voltage, 20A average rectified current, 640 mV forward voltage at 20A), identical package configuration (5-DFN 5x6), and identical compliance certifications (ROHS3, REACH unaffected). Direct substitution is supported without circuit redesign.

Q: Are there any differences in the 5-DFN package between these parts?

A: No. Both parts use the identical 8-PowerTDFN package with 5 leads and 5-DFN (5x6) (8-SOFL) supplier device package designation. PCB footprints and assembly processes are identical.

Q: What is the significance of the part number suffix (ST1G vs ST3G)?

A: The suffix designates the tape and reel packaging configuration and manufacturing date code. The electrical and mechanical specifications remain identical. The suffix does not affect functional performance or interchangeability.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both parts operate across a junction temperature range of -55°C to 150°C, supporting applications requiring extended thermal operating ranges.

Q: What is the reverse leakage current specification?

A: Both parts specify a maximum reverse leakage current of 400 µA at the rated reverse voltage of 45V. This parameter is critical for low-power standby applications and power supply efficiency.

Q: Are moisture sensitivity precautions required during storage?

A: No. Both parts carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard component storage practices are sufficient.

Q: Can these parts be used in parallel for higher current applications?

A: Current sharing in parallel Schottky diode configurations requires careful circuit design and thermal management. The provided specifications do not include parameters necessary for parallel operation analysis. Refer to onsemi application notes for parallel diode configuration guidance.