MA2SD300GL Equivalent & Substitute Parts

Part Overview

The MA2SD300GL is a Schottky diode manufactured by Panasonic Electronic Components, rated for 30 V DC reverse voltage and 100 mA average rectified current in a surface mount SC-79/SOD-523 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Schottky diodes in this voltage and current class are widely used in power management circuits, signal detection, and reverse polarity protection applications. The obsolete status of the MA2SD300GL requires identification of active alternative components that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	100	mA
Voltage - Forward (Vf) (Max) @ If	580 mV @ 100 mA	mV
Reverse Recovery Time (trr)	1	ns
Current - Reverse Leakage @ Vr	2 µA @ 30 V	µA
Capacitance @ Vr, F	9 pF @ 0V, 1MHz	pF
Technology	Schottky	-
Mounting Type	Surface Mount	-
Package / Case	SC-79, SOD-523	-
Operating Temperature - Junction (Max)	125	°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the MA2SD300GL is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V minimum
Mounting Type: Surface Mount
Package / Case: SC-79 or SOD-523
Technology: Schottky
Moisture Sensitivity Level: 1 (Unlimited)

Current Rating Considerations: Substitute parts are grouped into two categories based on average rectified current (Io):

Direct Current Rating Match (100 mA): Parts with Io = 100 mA provide identical current handling capacity and are preferred for direct replacement in existing designs.
Higher Current Rating (200 mA): Parts with Io = 200 mA exceed the original specification and are suitable for applications where increased current capacity is acceptable or beneficial. These parts maintain all other electrical parameters within compatible ranges.
Lower Current Rating (30 mA): Parts with Io = 30 mA are restricted to applications with reduced current requirements and are not recommended as general substitutes.

All substitute parts listed maintain the 30 V reverse voltage rating, surface mount configuration, and SC-79/SOD-523 package compatibility required for mechanical and electrical interchangeability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [mV]	trr [ns]	Ir @ Vr [µA]	Package	Product Status	Temp Junction (Max) [°C]
MA2SD300GL	Panasonic	30	100	580 @ 100 mA	1	2 @ 30 V	SC-79, SOD-523	Obsolete	125
RB501SM-30FHT2R	Rohm Semiconductor	30	100	350 @ 10 mA	-	10 @ 10 V	SC-79, SOD-523	Active	125
RB500SM-30FHT2R	Rohm Semiconductor	30	100	450 @ 10 mA	-	500 nA @ 10 V	SC-79, SOD-523	Active	150
RB520S30T1G	onsemi	30	200	600 @ 200 mA	-	1 @ 10 V	SC-79, SOD-523	Active	150
RB520S30T5G	onsemi	30	200	600 @ 200 mA	-	1 @ 10 V	SC-79, SOD-523	Active	150
BAT5402VH6327XTSA1	Infineon Technologies	30	200	800 @ 100 mA	5	2 @ 25 V	SC-79, SOD-523	Active	150
SBAT54XV2T1G	onsemi	30	200	800 @ 100 mA	5	2 @ 25 V	SC-79, SOD-523	Active	125
RB751S40T5G	onsemi	30	30	370 @ 1 mA	-	500 nA @ 30 V	SC-79, SOD-523	Active	150

Engineering Selection Recommendations

Primary Substitutes (100 mA Current Rating):

The RB501SM-30FHT2R and RB500SM-30FHT2R from Rohm Semiconductor are direct current-rated equivalents to the MA2SD300GL. Both components are active products with AEC-Q101 automotive qualification and ROHS3 compliance. The RB501SM-30FHT2R offers superior forward voltage characteristics (350 mV @ 10 mA) compared to the original part, while the RB500SM-30FHT2R provides lower reverse leakage (500 nA @ 10 V). Both maintain the 30 V reverse voltage rating and SC-79/SOD-523 package compatibility.

Secondary Substitutes (200 mA Current Rating):

The RB520S30T1G, RB520S30T5G, BAT5402VH6327XTSA1, and SBAT54XV2T1G are active products with doubled current capacity (200 mA). These components are suitable for applications where increased current headroom is acceptable. The RB520 variants from onsemi provide the lowest reverse leakage (1 µA @ 10 V) and extended operating temperature range (-55°C to 150°C). The BAT5402VH6327XTSA1 from Infineon and SBAT54XV2T1G from onsemi both offer ROHS3 compliance and active product status.

Not Recommended:

The RB751S40T5G is rated for only 30 mA average rectified current and is not suitable as a general substitute for the 100 mA MA2SD300GL specification.

All recommended substitutes maintain MSL 1 (Unlimited) moisture sensitivity classification and are available in active product status with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can I use a 200 mA rated diode as a substitute for the 100 mA MA2SD300GL?

A: Yes. A higher current rating provides additional design margin and is electrically compatible. The 200 mA parts (RB520S30T1G, RB520S30T5G, BAT5402VH6327XTSA1, SBAT54XV2T1G) maintain the 30 V reverse voltage rating and SC-79/SOD-523 package, allowing direct PCB substitution. Verify that forward voltage and reverse leakage characteristics are acceptable for your specific application.

Q: What is the difference between RB520S30T1G and RB520S30T5G?

A: Both parts are electrically identical with 30 V reverse voltage and 200 mA current rating. The primary difference is packaging: RB520S30T1G is supplied in Cut Tape (CT) & Digi-Reel format, while RB520S30T5G is supplied in Cut Tape (CT) & Digi-Reel format. Electrical performance and package case (SC-79, SOD-523) are identical.

Q: Are the Rohm RB501SM-30FHT2R and RB500SM-30FHT2R interchangeable?

A: Both are 100 mA, 30 V Schottky diodes in SC-79/SOD-523 packages with active product status and AEC-Q101 qualification. The RB501SM-30FHT2R has lower forward voltage (350 mV @ 10 mA), while the RB500SM-30FHT2R has lower reverse leakage (500 nA @ 10 V). Selection depends on whether forward voltage or leakage current is the critical parameter in your application.

Q: Does the package change between MA2SD300GL and substitute parts?

A: No. All substitute parts maintain the SC-79 and SOD-523 package designations. The supplier device package designation may differ (for example, SSMini2-F4 for the original versus EMD2 or SOD-523 for substitutes), but the physical package and PCB footprint remain compatible.

Q: What is the significance of AEC-Q101 qualification on the Rohm parts?

A: AEC-Q101 is an automotive qualification standard. The RB501SM-30FHT2R and RB500SM-30FHT2R meet this qualification, indicating suitability for automotive applications with enhanced reliability requirements. This qualification is not present on the original MA2SD300GL specification.

Q: Can I use the RB751S40T5G as a substitute?

A: No. The RB751S40T5G is rated for only 30 mA average rectified current, which is insufficient for applications designed for the 100 mA MA2SD300GL. This part is suitable only for low-current applications with reduced current requirements.

Q: What is the difference in reverse recovery time between the original and substitutes?

A: The MA2SD300GL specifies 1 ns reverse recovery time. Substitute parts with higher trr values (5 ns for BAT5402VH6327XTSA1 and SBAT54XV2T1G) have slightly slower switching characteristics. For most applications, this difference is not significant. Verify switching performance requirements for high-frequency or fast-switching applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (RB501SM-30FHT2R, RB500SM-30FHT2R, RB520S30T1G, RB520S30T5G, BAT5402VH6327XTSA1, SBAT54XV2T1G, RB751S40T5G) are ROHS3 compliant. The original MA2SD300GL product status is obsolete and does not include ROHS compliance information.

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