MA2SD1900L Equivalent & Substitute Parts

Part Overview

The MA2SD1900L is a Schottky diode manufactured by Panasonic Electronic Components, rated for 20 V DC reverse voltage and 200 mA average rectified current in a surface mount SC-79/SOD-523 package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and production continuity. Substitute parts must maintain electrical compatibility within the specified voltage and current parameters while accommodating the surface mount package format.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	470 mV @ 200 mA	mV
Reverse Recovery Time (trr)	2	ns
Current - Reverse Leakage @ Vr	15	µA @ 10 V
Capacitance @ Vr, F	15	pF @ 0V, 1MHz
Package / Case	SC-79, SOD-523	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	125	°C
Technology	Schottky	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the MA2SD1900L is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 20 V
Package / Case: Must be SC-79 or SOD-523 (surface mount)
Mounting Type: Must be Surface Mount
Technology: Schottky diode

Functional Compatibility Criteria:

Current - Average Rectified (Io): Substitute parts rated at 500 mA or higher satisfy the 200 mA requirement
Voltage - Forward (Vf): Substitute parts with forward voltage within acceptable operating range
Reverse Recovery Time (trr): Substitute parts with specified recovery characteristics
Operating Temperature Range: Substitute parts must support the application temperature envelope

All identified substitute parts meet the mandatory criteria. Substitute parts with higher current ratings (500 mA and 1 A) are electrically compatible and provide design margin for the 200 mA application requirement.

Parameter Comparison

Parameter	MA2SD1900L (Panasonic)	NSR0520V2T1G (onsemi)	NSVR0520V2T1G (onsemi)	PMEG2005EB,115 (Nexperia)	PMEG2010AEB,115 (Nexperia)
Manufacturer	Panasonic Electronic Components	onsemi	onsemi	Nexperia USA Inc.	Nexperia USA Inc.
Product Status	Obsolete	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V	20 V	20 V
Current - Average Rectified (Io)	200 mA	500 mA	500 mA	500 mA	1 A
Voltage - Forward (Vf) (Max) @ If	470 mV @ 200 mA	480 mV @ 500 mA	480 mV @ 500 mA	480 mV @ 500 mA	620 mV @ 1 A
Reverse Recovery Time (trr)	2 ns	12 ns	12 ns	Not specified	Not specified
Current - Reverse Leakage @ Vr	15 µA @ 10 V	75 µA @ 20 V	75 µA @ 20 V	30 µA @ 10 V	1.5 mA @ 20 V
Capacitance @ Vr, F	15 pF @ 0V, 1MHz	35 pF @ 1V, 1MHz	35 pF @ 1V, 1MHz	30 pF @ 1V, 1MHz	25 pF @ 1V, 1MHz
Package / Case	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction (Max)	125°C	125°C	125°C	125°C	150°C
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

NSR0520V2T1G and NSVR0520V2T1G (onsemi): Both parts are active products with 20 V reverse voltage rating and 500 mA current capacity. These parts exceed the MA2SD1900L current requirement and are ROHS3 compliant. The onsemi parts feature 12 ns reverse recovery time compared to the original 2 ns specification. NSR0520V2T1G and NSVR0520V2T1G are functionally equivalent for applications where the higher reverse recovery time is acceptable.

PMEG2005EB,115 (Nexperia): This part is an active product with 20 V reverse voltage rating, 500 mA current capacity, and ROHS3 compliance. The PMEG2005EB,115 includes AEC-Q100 automotive qualification and is suitable for automotive-grade applications. Reverse leakage current is 30 µA at 10 V, lower than the onsemi alternatives. This part is recommended for applications requiring automotive-grade components.

PMEG2010AEB,115 (Nexperia): This part is an active product with 20 V reverse voltage rating and 1 A current capacity, providing the highest current margin. Operating temperature maximum is 150°C, exceeding the original 125°C specification. ROHS3 compliance and AEC-Q100 qualification are provided. The PMEG2010AEB,115 is suitable for high-temperature and high-current applications. Forward voltage is 620 mV at 1 A, higher than other substitutes due to the increased current rating.

All substitute parts maintain the SC-79/SOD-523 surface mount package format and MSL 1 moisture sensitivity rating, ensuring direct PCB compatibility with the original MA2SD1900L design.

Frequently Asked Questions (FAQ)

Q: Can NSR0520V2T1G directly replace MA2SD1900L in existing designs?

A: NSR0520V2T1G is electrically compatible for the 200 mA application requirement. Both parts share the 20 V reverse voltage rating and SOD-523 package. The higher current rating (500 mA vs. 200 mA) provides design margin. Reverse recovery time differs (12 ns vs. 2 ns); circuit performance must be evaluated for timing-sensitive applications.

Q: What is the difference between NSR0520V2T1G and NSVR0520V2T1G?

A: Both parts are manufactured by onsemi with identical electrical specifications: 20 V reverse voltage, 500 mA current rating, 480 mV forward voltage at 500 mA, and SOD-523 package. The parts are functionally equivalent for substitution purposes.

Q: Is PMEG2005EB,115 suitable for automotive applications?

A: PMEG2005EB,115 carries AEC-Q100 automotive qualification and is designated as automotive-grade. This part is suitable for automotive applications requiring qualified components. The 20 V reverse voltage and 500 mA current rating meet the MA2SD1900L functional requirements.

Q: Why does PMEG2010AEB,115 have higher forward voltage than other substitutes?

A: PMEG2010AEB,115 is rated for 1 A current capacity, compared to 500 mA for other substitutes. Forward voltage is specified at the higher current level (620 mV @ 1 A). At the original 200 mA operating point, forward voltage would be lower than the specified value.

Q: Are all substitute parts ROHS3 compliant?

A: NSR0520V2T1G, NSVR0520V2T1G, PMEG2005EB,115, and PMEG2010AEB,115 are all ROHS3 compliant. The original MA2SD1900L RoHS status is not specified in the provided data.

Q: Can I use PMEG2010AEB,115 in place of MA2SD1900L for a 200 mA application?

A: PMEG2010AEB,115 is electrically compatible with the 200 mA requirement. The 1 A current rating provides substantial design margin. Operating temperature maximum is 150°C, exceeding the original 125°C specification. This part is suitable for applications requiring higher current capacity or elevated temperature operation.

Q: What is the moisture sensitivity level for all substitute parts?

A: All substitute parts, including NSR0520V2T1G, NSVR0520V2T1G, PMEG2005EB,115, and PMEG2010AEB,115, have MSL 1 (Unlimited) rating. This matches the original MA2SD1900L specification and indicates no moisture sensitivity restrictions for storage or handling.

Q: Are the substitute parts available in the same package as MA2SD1900L?

A: All substitute parts use the SC-79/SOD-523 surface mount package, identical to the MA2SD1900L. Direct PCB footprint compatibility is maintained, allowing drop-in replacement without layout modifications.

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