MBR830MFST1G Equivalent & Substitute Parts

Part Overview

The MBR830MFST1G is a Schottky rectifier diode manufactured by onsemi, rated for 30 V DC reverse voltage and 8 A average rectified current in a surface mount 5-DFN package. This component is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications where the original part number is no longer actively manufactured.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	8 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 8 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 30 V
Package / Case	8-PowerTDFN, 5 Leads
Supplier Device Package	5-DFN (5x6) (8-SOFL)
Operating Temperature - Junction	-40°C ~ 150°C
Technology	Schottky
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MBR830MFST1G are determined by electrical and mechanical parameter equivalence. All substitute parts listed maintain identical specifications across the following critical parameters:

Voltage - DC Reverse (Vr) (Max): 30 V
Current - Average Rectified (Io): 8 A
Voltage - Forward (Vf) (Max) @ If: 700 mV @ 8 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 200 µA @ 30 V
Package / Case: 8-PowerTDFN, 5 Leads
Supplier Device Package: 5-DFN (5x6) (8-SOFL)
Operating Temperature - Junction: -40°C ~ 150°C
Technology: Schottky
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitutes are grouped into two base product families: MBR830 and NRVB830. Within each family, variants exist based on tape and reel packaging designations (MFST1G and MFST3G). All listed substitutes are electrically and mechanically interchangeable with the original part number.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	Speed	Ir @ Vr	Package	Temp Range	RoHS	MSL
MBR830MFST1G	onsemi	Obsolete	30 V	8 A	700 mV @ 8 A	Fast Recovery ≤ 500ns, > 200mA	200 µA @ 30 V	5-DFN (5x6)	-40°C ~ 150°C	ROHS3	1
MBR830MFST3G	onsemi	Active	30 V	8 A	700 mV @ 8 A	Fast Recovery ≤ 500ns, > 200mA	200 µA @ 30 V	5-DFN (5x6)	-40°C ~ 150°C	ROHS3	1
NRVB830MFST1G	onsemi	Active	30 V	8 A	700 mV @ 8 A	Fast Recovery ≤ 500ns, > 200mA	200 µA @ 30 V	5-DFN (5x6)	-40°C ~ 150°C	ROHS3	1
NRVB830MFST3G	onsemi	Active	30 V	8 A	700 mV @ 8 A	Fast Recovery ≤ 500ns, > 200mA	200 µA @ 30 V	5-DFN (5x6)	-40°C ~ 150°C	ROHS3	1

Engineering Selection Recommendations

The MBR830MFST1G is classified as obsolete. Direct substitutes with active product status are available and recommended for new designs and ongoing production requirements.

Primary Recommendation: MBR830MFST3G or NRVB830MFST3G. Both parts maintain identical electrical and mechanical specifications while offering active product status from onsemi. The MFST3G packaging designation indicates current manufacturing and supply chain availability.

Secondary Recommendation: NRVB830MFST1G. This part offers active product status within the NRVB830 base product family while maintaining the MFST1G packaging variant. All electrical parameters and package dimensions are equivalent to the original MBR830MFST1G.

All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance profile. No design modifications are required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can MBR830MFST3G be used as a direct replacement for MBR830MFST1G?

A: Yes. Both parts are manufactured by onsemi and share identical electrical specifications (30 V, 8 A, 700 mV forward voltage) and package configuration (5-DFN 5x6). The MFST3G variant is currently in active production status, whereas MFST1G is obsolete. The difference between MFST1G and MFST3G designations relates to tape and reel packaging specifications, not electrical performance.

Q: What is the difference between MBR830 and NRVB830 base product families?

A: Both MBR830 and NRVB830 are Schottky rectifier diodes manufactured by onsemi with identical electrical ratings (30 V, 8 A, 700 mV Vf). The base product number designation reflects different product lines within onsemi's portfolio. All electrical and mechanical parameters are equivalent, and either family is suitable for substitution.

Q: Are all substitute parts in the same physical package?

A: Yes. All listed substitute parts use the 5-DFN (5x6) package configuration with 5 leads in the 8-PowerTDFN form factor. Pin-to-pin compatibility and PCB footprint requirements are identical across all substitutes.

Q: What is the significance of the MFST1G versus MFST3G designation?

A: The MFST1G and MFST3G designations indicate different tape and reel packaging specifications for surface mount component handling and automated assembly. These designations do not affect electrical performance or physical package dimensions. Selection between MFST1G and MFST3G is determined by manufacturing and supply chain requirements rather than circuit design considerations.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original MBR830MFST1G specification. Moisture sensitivity level is MSL 1 (Unlimited) for all parts.

Q: Which substitute part should be selected for new production designs?

A: For new production designs, select either MBR830MFST3G or NRVB830MFST3G. Both parts are in active product status and offer the most reliable long-term supply chain availability. The MFST3G packaging variant represents current manufacturing standards.

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