MA2SD310GL Equivalent & Substitute Parts

Part Overview

The MA2SD310GL is a Schottky diode manufactured by Panasonic Electronic Components, rated for 30 V DC reverse voltage and 200 mA average rectified current in a surface mount SSMini2-F4 package. This part is classified as obsolete, making equivalent and substitute components necessary for ongoing design support, production continuity, and system maintenance. Active alternatives from multiple manufacturers provide compatible electrical and mechanical specifications while offering current product status and supply availability.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	470 mV @ 200 mA	—
Reverse Recovery Time (trr)	2	ns
Current - Reverse Leakage @ Vr	200 µA @ 30 V	—
Capacitance @ Vr, F	25 pF @ 0 V, 1 MHz	—
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 MA2SD310GL is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 30 V
Current - Average Rectified (Io): 200 mA
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: SC-79, SOD-523

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Substitute parts may vary within the range of 480 mV to 800 mV at specified current levels
Current - Reverse Leakage @ Vr: Substitute parts may range from 1 µA to 200 µA depending on measurement conditions
Capacitance @ Vr, F: Substitute parts may range from 10 pF to 25 pF at specified voltage and frequency
Operating Temperature - Junction (Max): Substitute parts rated at 125°C or higher are acceptable
Reverse Recovery Time (trr): Substitute parts may range from 2 ns to 5 ns

All substitute parts listed maintain compatibility with the original part's electrical performance envelope and physical form factor, enabling direct replacement in surface mount applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Capacitance @ Vr, F [pF]	Tj (Max) [°C]	Product Status	Package
MA2SD310GL	Panasonic Electronic Components	30	200	470 @ 200 mA	200 @ 30 V	25 @ 0 V, 1 MHz	125	Obsolete	SC-79, SOD-523
1PS79SB10,115	Nexperia USA Inc.	30	200	800 @ 100 mA	2 @ 25 V	10 @ 1 V, 1 MHz	125	Active	SC-79, SOD-523
1PS79SB31,115	Nexperia USA Inc.	30	200	500 @ 200 mA	30 @ 10 V	25 @ 1 V, 1 MHz	125	Active	SC-79, SOD-523
1PS79SB31,135	Nexperia USA Inc.	30	200	500 @ 200 mA	30 @ 10 V	25 @ 1 V, 1 MHz	125	Active	SC-79, SOD-523
1PS79SB31,315	Nexperia USA Inc.	30	200	500 @ 200 mA	30 @ 10 V	25 @ 1 V, 1 MHz	125	Active	SC-79, SOD-523
BAT5402VH6327XTSA1	Infineon Technologies	30	200	800 @ 100 mA	2 @ 25 V	10 @ 1 V, 1 MHz	150	Active	SC-79, SOD-523
PMEG3002AEB,115	Nexperia USA Inc.	30	200	480 @ 200 mA	10 @ 10 V	25 @ 1 V, 1 MHz	125	Active	SC-79, SOD-523
RB520S30,115	Nexperia USA Inc.	30	200	600 @ 200 mA	1 @ 10 V	20 @ 1 V, 1 MHz	150	Active	SC-79, SOD-523
RB520S30T1G	onsemi	30	200	600 @ 200 mA	1 @ 10 V	—	150	Active	SC-79, SOD-523
RB520S30YL	Nexperia USA Inc.	30	200	600 @ 200 mA	1 @ 10 V	20 @ 1 V, 1 MHz	150	Active	SC-79, SOD-523
RB520SM-30FHT2R	Rohm Semiconductor	30	200	580 @ 200 mA	1 @ 10 V	—	150	Active	SC-79, SOD-523

Engineering Selection Recommendations

Primary Selection Criteria:

All substitute parts maintain the core electrical specifications of 30 V reverse voltage and 200 mA average rectified current with compatible SC-79/SOD-523 surface mount packaging. Selection among active alternatives is based on product status, compliance certifications, and operational temperature requirements.

Active Product Status: All listed substitute parts carry Active product status, ensuring ongoing availability and manufacturing support. The MA2SD310GL's Obsolete classification necessitates transition to one of these active alternatives.

Compliance and Qualification:

PMEG3002AEB,115 and RB520S30YL carry AEC-Q100 and AEC-Q101 automotive qualifications respectively, suitable for automotive and high-reliability applications.
RB520S30,115 and RB520SM-30FHT2R provide AEC-Q100 and AEC-Q101 qualifications for automotive-grade requirements.
1PS79SB10,115 carries AEC-Q100 automotive qualification.
All substitute parts are RoHS3 Compliant and REACH Unaffected.

Operating Temperature Range:

PMEG3002AEB,115 operates from −65°C to 125°C, providing extended low-temperature performance.
RB520S30T1G operates from −55°C to 150°C, providing extended temperature range.
BAT5402VH6327XTSA1, RB520S30,115, RB520S30YL, and RB520SM-30FHT2R are rated to 150°C maximum junction temperature, exceeding the original part's 125°C specification.

Forward Voltage Characteristics:

PMEG3002AEB,115 matches the original part's forward voltage specification at 480 mV @ 200 mA.
1PS79SB31,115, 1PS79SB31,135, and 1PS79SB31,315 provide 500 mV @ 200 mA forward voltage.
RB520SM-30FHT2R provides 580 mV @ 200 mA forward voltage.
RB520S30,115, RB520S30T1G, and RB520S30YL provide 600 mV @ 200 mA forward voltage.
1PS79SB10,115 and BAT5402VH6327XTSA1 provide 800 mV @ 100 mA forward voltage.

Reverse Leakage Performance:

RB520S30,115, RB520S30T1G, RB520S30YL, and RB520SM-30FHT2R provide superior reverse leakage performance at 1 µA @ 10 V.
1PS79SB10,115 and BAT5402VH6327XTSA1 provide 2 µA @ 25 V reverse leakage.
PMEG3002AEB,115 provides 10 µA @ 10 V reverse leakage.

Frequently Asked Questions (FAQ)

Q: Can the MA2SD310GL be directly replaced with any of the listed substitute parts?

A: Yes. All listed substitute parts maintain the critical electrical specifications of 30 V reverse voltage, 200 mA average rectified current, and Schottky technology. All are packaged in SC-79/SOD-523 surface mount form factors compatible with the original part's footprint. Direct replacement is supported without circuit redesign.

Q: What is the primary reason for finding substitutes for the MA2SD310GL?

A: The MA2SD310GL is classified as Obsolete. Substitute parts with Active product status ensure continued supply availability, manufacturing support, and long-term design sustainability.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage variations among substitute parts range from 470 mV to 800 mV depending on measurement conditions. In low-voltage rectification and switching applications, forward voltage directly affects power dissipation and voltage drop across the diode. Applications sensitive to forward voltage should select substitutes with specifications closest to the original part's 470 mV @ 200 mA rating. PMEG3002AEB,115 at 480 mV @ 200 mA provides the closest match.

Q: Are all substitute parts suitable for automotive applications?

A: Automotive-grade substitutes with AEC-Q100 or AEC-Q101 qualifications include PMEG3002AEB,115, RB520S30,115, RB520S30YL, and RB520SM-30FHT2R. Non-automotive-qualified alternatives include 1PS79SB10,115, 1PS79SB31,115, 1PS79SB31,135, 1PS79SB31,315, BAT5402VH6327XTSA1, and RB520S30T1G. Selection depends on application requirements.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current affects standby power consumption and circuit performance in high-impedance applications. The original part specifies 200 µA @ 30 V. Substitute parts range from 1 µA to 200 µA depending on measurement voltage. Lower reverse leakage (1 µA to 10 µA) reduces standby power consumption and improves circuit efficiency in sensitive applications.

Q: Do all substitute parts use the same package?

A: All substitute parts use SC-79 or SOD-523 surface mount packages, which are mechanically and electrically compatible. Supplier device packages vary (SSMini2-F4, SOD-523, PG-SC79-2, EMD2), but all fit the same PCB footprint and land pattern. Verify specific supplier device package documentation for assembly equipment compatibility.

Q: What is the difference between the various Nexperia 1PS79SB31 variants?

A: The 1PS79SB31,115, 1PS79SB31,135, and 1PS79SB31,315 variants differ in packaging format: Cut Tape (CT) & Digi-Reel® for the ,115 variant, Tape & Reel (TR) for the ,135 and ,315 variants. Electrical specifications are identical across all three variants. Selection depends on procurement and assembly requirements.

Q: Which substitute part provides the best overall compatibility with the MA2SD310GL?

A: PMEG3002AEB,115 provides the closest electrical match with 480 mV @ 200 mA forward voltage specification, matching the original part's 470 mV @ 200 mA rating. It carries AEC-Q100 automotive qualification, RoHS3 compliance, and Active product status. Operating temperature range of −65°C to 125°C covers the original part's maximum specification.

Q: Are there any moisture sensitivity concerns with substitute parts?

A: All substitute parts, including the original MA2SD310GL, carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage practices apply without special moisture control requirements.

Q: Can substitute parts with higher maximum junction temperatures be used in place of the MA2SD310GL?

A: Yes. Substitute parts rated to 150°C maximum junction temperature (BAT5402VH6327XTSA1, RB520S30,115, RB520S30T1G, RB520S30YL, RB520SM-30FHT2R) exceed the original part's 125°C specification and provide improved thermal margin. Higher temperature ratings do not negatively affect circuit performance in applications operating within the original part's temperature range.

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