MBRD340RLG Equivalent & Substitute Parts

Part Overview

The MBRD340RLG is a Schottky rectifier diode manufactured by onsemi, rated for 40 V DC reverse voltage and 3 A average rectified current in a surface mount DPAK package. This component is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production builds and field replacements where the original part is no longer procurable.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Technology	Schottky
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MBRD340RLG are qualified based on the following electrical and mechanical parameters:

Voltage Rating: DC reverse voltage of 40 V (maximum)
Current Rating: Average rectified current of 3 A
Forward Voltage: Maximum forward voltage drop at rated current
Recovery Speed: Fast recovery characteristic ≤ 500ns at > 200mA
Package Type: TO-252-3 DPAK surface mount configuration
Technology: Schottky diode technology
Operating Temperature Range: Junction temperature capability
Compliance: ROHS3 compliance and REACH unaffected status

All substitute parts listed maintain electrical equivalence within these parameters and are compatible with the original DPAK footprint and PCB assembly process.

Parameter Comparison

Parameter	MBRD340RLG (onsemi)	CSHD3-40 TR13 PBFREE (Central Semiconductor)	VS-MBRD340TR-M3 (Vishay)	VS-MBRD340TRL-M3 (Vishay)
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A	650 mV @ 3 A	600 mV @ 3 A	600 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	200 µA @ 40 V	100 µA @ 40 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	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

CSHD3-40 TR13 PBFREE (Central Semiconductor Corp)

This substitute is electrically equivalent with identical voltage and current ratings. Forward voltage is 50 mV higher at rated current (650 mV vs. 600 mV), which remains within acceptable operating margins for most applications. Reverse leakage current is lower (100 µA vs. 200 µA), indicating superior leakage characteristics. The part maintains full ROHS3 compliance and MSL 1 rating. Product status is active with 6694 units in stock.

VS-MBRD340TR-M3 (Vishay General Semiconductor - Diodes Division)

This substitute provides direct electrical equivalence with identical forward voltage (600 mV @ 3 A) and voltage ratings. Operating temperature range is reduced to -40°C ~ 150°C compared to the original -65°C ~ 150°C. Capacitance specification is provided (189 pF @ 5V, 1MHz). Full ROHS3 compliance and MSL 1 rating are maintained. Product status is active with 4272 units in stock.

VS-MBRD340TRL-M3 (Vishay General Semiconductor - Diodes Division)

This substitute is electrically and mechanically identical to VS-MBRD340TR-M3, with the same forward voltage, voltage ratings, and operating temperature range (-40°C ~ 150°C). Capacitance specification is identical (189 pF @ 5V, 1MHz). Full ROHS3 compliance and MSL 1 rating are maintained. Product status is active with 812 units in stock.

All substitute parts are ROHS3 compliant, REACH unaffected, and maintain the same DPAK surface mount package configuration. Selection among substitutes depends on application-specific requirements for operating temperature range, forward voltage tolerance, and component availability.

Frequently Asked Questions (FAQ)

Q: Can CSHD3-40 TR13 PBFREE be used as a direct replacement for MBRD340RLG?

A: Yes. Both parts are 40 V, 3 A Schottky diodes in DPAK packages with fast recovery characteristics. The forward voltage difference of 50 mV at rated current is within normal design margins for rectifier applications.

Q: What is the difference between VS-MBRD340TR-M3 and VS-MBRD340TRL-M3?

A: Both Vishay parts are electrically and mechanically identical. They share the same electrical specifications, package configuration, and operating temperature range. Selection between them is based on inventory availability.

Q: Does the reduced operating temperature range of Vishay parts (-40°C ~ 150°C vs. -65°C ~ 150°C) affect compatibility?

A: The reduced lower temperature limit applies only to applications requiring operation below -40°C. For standard industrial and commercial applications operating above -40°C, the Vishay parts are fully compatible.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use TO-252-3 DPAK surface mount packages with identical footprints. CSHD3-40 TR13 PBFREE is supplied in Tape & Reel format, as are both Vishay parts (VS-MBRD340TR-M3 and VS-MBRD340TRL-M3).

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the original MBRD340RLG specifications.

Q: How do reverse leakage current specifications compare?

A: MBRD340RLG and VS-MBRD340TR-M3/VS-MBRD340TRL-M3 specify 200 µA reverse leakage at their respective voltage ratings. CSHD3-40 TR13 PBFREE specifies lower reverse leakage at 100 µA @ 40 V, indicating superior leakage performance.

Q: Is capacitance specification relevant for substitution?

A: Capacitance is specified only for Vishay parts (189 pF @ 5V, 1MHz). For applications where junction capacitance is a design parameter, Vishay parts provide this specification. For standard rectifier applications, capacitance differences are not a limiting factor.

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