MBRD320RLG Equivalent & Substitute Parts

Part Overview

The MBRD320RLG is a Schottky rectifier diode manufactured by onsemi, rated for 20 V DC reverse voltage and 3 A average rectified current in a surface mount DPAK package. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within the same application category.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 20 V
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
Operating Temperature - Junction	-65°C ~ 150°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MBRD320RLG is determined by equivalence across the following critical parameters:

Electrical Specifications:

Voltage - DC Reverse (Vr) (Max): 20 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 600 mV @ 3 A
Current - Reverse Leakage @ Vr: 200 µA @ 20 V
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Specifications:

Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount

Compliance Requirements:

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

Parts meeting all electrical and mechanical parameters are classified as parametric equivalents. Parts with identical electrical specifications but different product status or packaging format are classified as similar alternatives.

Parameter Comparison

Parameter	MBRD320RLG	MBRD320T4G	VS-MBRD320-M3
Manufacturer	onsemi	onsemi	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V
Current - Average Rectified (Io)	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A	600 mV @ 3 A	600 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 20 V	200 µA @ 20 V	200 µA @ 20 V
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-40°C ~ 150°C
Technology	Schottky	Schottky	Schottky
Product Status	Obsolete	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Reel (RL)	Cut Tape (CT)	Tube

Engineering Selection Recommendations

MBRD320T4G (onsemi): This part is a parametric equivalent to the MBRD320RLG, sharing identical electrical specifications, package configuration, and operating temperature range. Both parts are classified as obsolete and ROHS3 compliant. The primary distinction is packaging format: MBRD320T4G is supplied in cut tape format, while MBRD320RLG is supplied on reel. Selection between these two onsemi variants depends on procurement quantity and assembly line requirements.

VS-MBRD320-M3 (Vishay General Semiconductor - Diodes Division): This part meets all electrical specifications and package requirements of the MBRD320RLG. The VS-MBRD320-M3 maintains active product status, providing long-term availability and supply chain stability compared to the obsolete MBRD320RLG. The operating temperature range differs at the lower bound (-40°C versus -65°C), which is acceptable for applications not requiring sub-zero operation. This part is supplied in tube packaging format. The VS-MBRD320-M3 is suitable for new designs and ongoing production where extended component lifecycle is required.

Frequently Asked Questions (FAQ)

Q: Can MBRD320T4G be used as a direct replacement for MBRD320RLG?

A: Yes. Both parts are manufactured by onsemi and share identical electrical specifications (20 V, 3 A, 600 mV forward voltage, 200 µA reverse leakage), identical package configuration (TO-252-3 DPAK), and identical operating temperature range (-65°C to 150°C). The difference is packaging format: cut tape versus reel. Functional compatibility is complete.

Q: Is VS-MBRD320-M3 compatible with MBRD320RLG in existing designs?

A: Yes, with one consideration. The VS-MBRD320-M3 meets all electrical specifications and uses the identical DPAK package. The operating temperature minimum is -40°C instead of -65°C. For applications operating above -40°C, this substitution is fully compatible. For applications requiring operation below -40°C, the MBRD320RLG or MBRD320T4G must be retained.

Q: Why is VS-MBRD320-M3 recommended for new designs?

A: The VS-MBRD320-M3 carries active product status, ensuring continued availability and manufacturing support. The MBRD320RLG and MBRD320T4G are both obsolete, indicating discontinued production and limited future supply. For designs with extended lifecycle requirements, the active VS-MBRD320-M3 provides supply chain continuity.

Q: Are there differences in capacitance between these parts?

A: The VS-MBRD320-M3 specifies capacitance at 189 pF @ 5V, 1MHz. The MBRD320RLG and MBRD320T4G do not provide capacitance specifications in the available data. For applications where junction capacitance is a design parameter, the VS-MBRD320-M3 value should be verified against circuit requirements.

Q: What packaging formats are available?

A: MBRD320RLG is supplied on reel (RL). MBRD320T4G is supplied in cut tape (CT). VS-MBRD320-M3 is supplied in tube packaging. Selection depends on assembly equipment compatibility and procurement volume requirements.

Q: Are all three parts RoHS compliant?

A: Yes. MBRD320RLG, MBRD320T4G, and VS-MBRD320-M3 are all ROHS3 compliant with MSL rating of 1 (Unlimited). All parts are REACH unaffected.

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