MA2SD290GL Equivalent & Substitute Parts

Part Overview

The MA2SD290GL 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 SSMini2-F4 package. This component is classified as obsolete, making equivalent 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 clamping applications, and reverse polarity protection. The obsolete status of the MA2SD290GL 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	420 mV @ 100 mA	mV
Speed	Small Signal ≤ 200mA (Io), Any Speed	—
Reverse Recovery Time (trr)	1	ns
Current - Reverse Leakage @ Vr	120 µA @ 30 V	µA
Mounting Type	Surface Mount	—
Package / Case	SC-79, SOD-523	—
Operating Temperature - Junction (Max)	125	°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitute parts for the MA2SD290GL are grouped based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Core Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io): 100 mA minimum
Mounting Type: Surface Mount
Package / Case: SC-79 or SOD-523
Technology: Schottky

Substitution Categories:

Category 1: Direct Electrical Equivalents (100 mA rated) Parts RB501SM-30FHT2R and RB500SM-30FHT2R maintain the exact 100 mA current rating with 30 V reverse voltage specification. These components are manufactured by Rohm Semiconductor and carry active product status with automotive-grade qualification (AEC-Q101).

Category 2: Higher Current Capacity Substitutes (200 mA rated) Parts RB520S-30-TP, RB520S30T1G, and SBAT54XV2T1G are rated for 200 mA average rectified current while maintaining 30 V reverse voltage. These components provide increased current handling capability and are suitable for applications where the original 100 mA specification provides insufficient margin.

Category 3: Lower Current Capacity Substitute (30 mA rated) Part RB751S40T5G is rated for 30 mA average rectified current. This component is applicable only in applications where the circuit current requirement does not exceed 30 mA.

All substitute parts maintain surface mount configuration and SC-79/SOD-523 package compatibility with the original MA2SD290GL.

Parameter Comparison

Parameter	MA2SD290GL (Panasonic)	RB501SM-30FHT2R (Rohm)	RB500SM-30FHT2R (Rohm)	RB520S-30-TP (MCC)	RB520S30T1G (onsemi)	SBAT54XV2T1G (onsemi)	RB751S40T5G (onsemi)
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	30 V	30 V	30 V	30 V
Current - Average Rectified (Io)	100 mA	100 mA	100 mA	200 mA	200 mA	200 mA	30 mA
Voltage - Forward (Vf) (Max) @ If	420 mV @ 100 mA	350 mV @ 10 mA	450 mV @ 10 mA	600 mV @ 200 mA	600 mV @ 200 mA	800 mV @ 100 mA	370 mV @ 1 mA
Speed	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed
Reverse Recovery Time (trr)	1 ns	—	—	—	—	5 ns	—
Current - Reverse Leakage @ Vr	120 µA @ 30 V	10 µA @ 10 V	500 nA @ 10 V	1 µA @ 10 V	1 µA @ 10 V	2 µA @ 25 V	500 nA @ 30 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523
Operating Temperature - Junction	125°C (Max)	125°C (Max)	150°C (Max)	125°C (Max)	-55°C ~ 150°C	-55°C ~ 125°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	Yes (AEC-Q101)	Yes (AEC-Q101)	—	—	—	—

Engineering Selection Recommendations

For Direct Replacement (100 mA Applications):

RB501SM-30FHT2R is the preferred direct substitute for the MA2SD290GL. This component maintains the 100 mA current rating and 30 V reverse voltage specification. The RB501SM-30FHT2R carries active product status, ROHS3 compliance, and AEC-Q101 automotive qualification. The forward voltage specification of 350 mV @ 10 mA is lower than the original part, indicating improved efficiency characteristics. Reverse leakage current of 10 µA @ 10 V is significantly lower than the original 120 µA @ 30 V, providing superior leakage performance.

RB500SM-30FHT2R is an alternative direct replacement with identical electrical ratings. This component offers extended maximum junction temperature of 150°C compared to 125°C for the MA2SD290GL, providing thermal margin in high-temperature applications. The forward voltage specification of 450 mV @ 10 mA is higher than RB501SM-30FHT2R but remains within acceptable range for most applications.

For Higher Current Capacity Applications (200 mA):

RB520S30T1G (onsemi) is recommended for applications requiring increased current capacity. This component is rated for 200 mA average rectified current while maintaining 30 V reverse voltage. The part carries active product status, ROHS3 compliance, and extended operating temperature range of -55°C to 150°C. Inventory availability is substantial at 185,400 pieces.

RB520S-30-TP (Micro Commercial Co) provides equivalent electrical specifications to RB520S30T1G with 200 mA current rating and 30 V reverse voltage. This component is available in Tape & Reel packaging with 29,100 pieces in stock.

SBAT54XV2T1G (onsemi) is a 200 mA rated alternative with extended temperature range of -55°C to 125°C. This component exhibits higher forward voltage of 800 mV @ 100 mA and includes specified reverse recovery time of 5 ns and capacitance of 10 pF @ 1V, 1MHz.

For Lower Current Applications (30 mA):

RB751S40T5G is applicable only in circuits where the maximum current requirement does not exceed 30 mA. This component maintains 30 V reverse voltage specification and includes specified capacitance of 2.5 pF @ 1V, 1MHz. Extended operating temperature range of -55°C to 150°C is provided.

Compliance and Qualification:

All substitute parts maintain ROHS3 compliance and REACH unaffected status. RB501SM-30FHT2R and RB500SM-30FHT2R carry AEC-Q101 automotive qualification, suitable for automotive and industrial applications requiring formal qualification documentation.

Frequently Asked Questions (FAQ)

Q: Can RB520S30T1G be used as a direct replacement for MA2SD290GL in a 100 mA circuit?

A: RB520S30T1G is electrically compatible with MA2SD290GL in 100 mA applications. The component is rated for 200 mA average rectified current, providing 2× current margin. Both components maintain 30 V reverse voltage specification and surface mount SC-79/SOD-523 package configuration. The higher current rating does not create incompatibility in lower current applications.

Q: What is the difference between RB501SM-30FHT2R and RB500SM-30FHT2R?

A: Both components are 100 mA, 30 V Schottky diodes manufactured by Rohm Semiconductor with identical package and mounting specifications. The primary differences are: RB501SM-30FHT2R exhibits lower forward voltage (350 mV @ 10 mA) and lower reverse leakage current (10 µA @ 10 V), while RB500SM-30FHT2R provides extended maximum junction temperature (150°C vs. 125°C) and higher forward voltage (450 mV @ 10 mA). Selection depends on thermal requirements and efficiency priorities.

Q: Is RB751S40T5G suitable for the MA2SD290GL application?

A: RB751S40T5G is suitable only if the circuit current requirement does not exceed 30 mA. This component is rated for 30 mA average rectified current, which is below the original 100 mA specification. Use of this component in applications requiring 100 mA operation will result in device overstress and failure.

Q: Do all substitute parts require the same PCB footprint as MA2SD290GL?

A: All substitute parts listed maintain SC-79 and SOD-523 package specifications, ensuring identical PCB footprint compatibility with MA2SD290GL. No PCB layout modifications are required for mechanical substitution.

Q: What is the significance of AEC-Q101 qualification on RB501SM-30FHT2R and RB500SM-30FHT2R?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. Components carrying this qualification have undergone formal reliability testing and are approved for automotive applications. If the original design was specified for automotive use, RB501SM-30FHT2R or RB500SM-30FHT2R are recommended to maintain qualification compliance.

Q: How does forward voltage affect circuit performance?

A: Forward voltage (Vf) determines the voltage drop across the diode during conduction. Lower forward voltage reduces power dissipation and heat generation. RB501SM-30FHT2R exhibits the lowest forward voltage (350 mV @ 10 mA) among direct 100 mA replacements, providing improved efficiency. SBAT54XV2T1G exhibits the highest forward voltage (800 mV @ 100 mA) and should be selected only when forward voltage specification is not a design constraint.

Q: What is reverse leakage current and why does it matter?

A: Reverse leakage current is the small current that flows through the diode when reverse biased. Lower reverse leakage current indicates better diode quality and reduced power loss in standby conditions. RB500SM-30FHT2R and RB751S40T5G exhibit the lowest reverse leakage (500 nA @ specified voltage), while MA2SD290GL exhibits 120 µA @ 30 V. Substitute parts provide superior leakage performance.

Q: Are all substitute parts available in the same packaging options as MA2SD290GL?

A: Substitute parts are available in different packaging formats: RB501SM-30FHT2R and RB500SM-30FHT2R are supplied in Cut Tape (CT) & Digi-Reel format, while RB520S-30-TP, SBAT54XV2T1G, and RB751S40T5G are supplied in Tape & Reel (TR) format. All maintain identical component package specifications (SC-79, SOD-523) for PCB compatibility. Packaging format selection depends on assembly process requirements.

Q: What is the operating temperature range consideration for substitute selection?

A: MA2SD290GL specifies maximum junction temperature of 125°C. RB520S30T1G and RB751S40T5G provide extended operating range of -55°C to 150°C, offering thermal margin in high-temperature environments. RB501SM-30FHT2R maintains 125°C maximum, matching the original specification. RB500SM-30FHT2R extends to 150°C maximum. Selection depends on application thermal environment.

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