MMSD301T1G Equivalent & Substitute Parts

Part Overview

The MMSD301T1G is an active Schottky diode manufactured by onsemi, rated for 30V DC reverse voltage and 200mA average rectified current in a surface mount SOD-123 package. This component is designed for small signal rectification applications requiring fast switching characteristics. The part is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1) and is currently in active production status with 505,100 pieces in stock.

Equivalent and substitute parts are identified to provide design flexibility for procurement, inventory management, and supply chain continuity. Substitutes are selected based on matching or exceeding the electrical and mechanical specifications of the primary part.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	600 mV @ 10 mA	mV @ mA
Current - Reverse Leakage @ Vr	200 nA @ 25 V	nA @ V
Capacitance @ Vr, F	1.5 @ 0V, 1MHz	pF @ V, MHz
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 125	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical parameter alignment with the MMSD301T1G:

Parametric Equivalent: Parts that match all critical electrical specifications (30V reverse voltage, 200mA average rectified current, SOD-123 package, and small signal speed classification) with identical forward voltage characteristics.

Similar Parts: Parts that share the same 30V reverse voltage rating and SOD-123 package form factor but differ in one or more of the following parameters: average rectified current capacity, forward voltage characteristics, reverse leakage current, capacitance, or speed classification. These parts are suitable for applications where the MMSD301T1G specifications can be met by a higher-rated device or where specific electrical characteristics differ within acceptable design margins.

Key substitution criteria:

Voltage - DC Reverse (Vr) (Max): 30V minimum
Package / Case: SOD-123 (mechanical compatibility)
Mounting Type: Surface Mount
Technology: Schottky
RoHS Status: ROHS3 Compliant

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) [mV]	Package	Reverse Leakage @ Vr [nA/µA/mA]	Operating Temp [°C]	Inventory [Pcs]
MMSD301T1G	onsemi	30	200	600 @ 10 mA	SOD-123	200 nA @ 25 V	-55 to 125	505,100
SMMSD301T1G	onsemi	30	200	600 @ 10 mA	SOD-123	200 nA @ 25 V	-55 to 125	11,633
BAT42W-E3-08	Vishay General Semiconductor - Diodes Division	30	200	650 @ 50 mA	SOD-123	500 nA @ 25 V	-55 to 125	3,570
BAT42W_R1_00001	Panjit International Inc.	30	200	1000 @ 200 mA	SOD-123	500 nA @ 30 V	-55 to 125	39,220
PMEG3005EGWX	Nexperia USA Inc.	30	500	430 @ 500 mA	SOD-123	150 µA @ 30 V	-55 to 150	3,180
PMEG3005EH,115	Nexperia USA Inc.	30	500	430 @ 500 mA	SOD-123F	150 µA @ 30 V	-55 to 150	6,200
PMEG3020EGWX	Nexperia USA Inc.	30	2000	620 @ 2000 mA	SOD-123	1 mA @ 30 V	-55 to 150	13,518
SD101CW-E3-08	Vishay General Semiconductor - Diodes Division	40	30	900 @ 15 mA	SOD-123	200 nA @ 30 V	-55 to 125	18,603
SS0530_R1_00001	Panjit International Inc.	30	500	430 @ 500 mA	SOD-123	20 µA @ 15 V	-55 to 125	4,029

Engineering Selection Recommendations

Parametric Equivalent:

SMMSD301T1G (onsemi) is a direct parametric equivalent to MMSD301T1G. All electrical specifications, package form factor, and operating temperature range are identical. This part is suitable for direct substitution in all applications where MMSD301T1G is specified. Both parts are RoHS3 compliant and carry identical compliance certifications.

Similar Parts for Higher Current Applications:

PMEG3005EGWX and SS0530_R1_00001 are rated for 500mA average rectified current, exceeding the 200mA specification of MMSD301T1G. Both maintain the 30V reverse voltage rating and SOD-123 package. These parts are suitable for applications requiring higher current capacity while maintaining the same voltage class. Both are RoHS3 compliant.

PMEG3020EGWX is rated for 2A average rectified current with 30V reverse voltage in SOD-123 package. This part provides significant current margin for applications requiring higher power handling. RoHS3 compliant.

Similar Parts for Voltage Margin:

SD101CW-E3-08 (Vishay) is rated for 40V reverse voltage with 30mA average rectified current. This part provides higher voltage margin but reduced current capacity. Suitable for applications where voltage headroom is prioritized over current capacity. RoHS3 compliant.

Similar Parts with Voltage and Current Trade-offs:

BAT42W-E3-08 (Vishay) and BAT42W_R1_00001 (Panjit) both maintain 30V reverse voltage and 200mA current rating but exhibit higher forward voltage characteristics (650mV and 1000mV respectively at specified test currents) compared to MMSD301T1G (600mV @ 10mA). These parts are suitable for applications where forward voltage variation is acceptable. Both are RoHS3 compliant.

All substitute parts listed are active production items with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can SMMSD301T1G be used as a direct replacement for MMSD301T1G?

A: Yes. SMMSD301T1G is a parametric equivalent with identical electrical specifications, package type (SOD-123), and operating temperature range (-55°C to 125°C). Both parts are manufactured by onsemi and carry the same RoHS3 compliance status.

Q: What is the difference between MMSD301T1G and the PMEG3005 series parts?

A: The PMEG3005 series (PMEG3005EGWX and PMEG3005EH,115) are rated for 500mA average rectified current compared to 200mA for MMSD301T1G. Both maintain 30V reverse voltage rating. PMEG3005EGWX uses SOD-123 package while PMEG3005EH,115 uses SOD-123F package. The PMEG3005 series exhibits lower forward voltage (430mV @ 500mA) and higher operating temperature capability (150°C max junction temperature).

Q: Can I use PMEG3020EGWX in place of MMSD301T1G?

A: PMEG3020EGWX is rated for 2A average rectified current with 30V reverse voltage in SOD-123 package, making it mechanically and electrically compatible for applications where MMSD301T1G is specified. The higher current rating provides design margin. Forward voltage is 620mV @ 2A. This part is suitable for applications where current capacity exceeds 200mA.

Q: What is the significance of the SOD-123F package variant?

A: PMEG3005EH,115 uses SOD-123F package, which is a variant of the standard SOD-123 package. Verify PCB footprint compatibility before substitution. The electrical specifications remain identical to PMEG3005EGWX (SOD-123 variant).

Q: Are all listed substitute parts RoHS3 compliant?

A: Yes. All parts listed in the substitute table carry RoHS3 compliance certification and are suitable for applications requiring RoHS compliance.

Q: What is the primary difference between BAT42W variants from different manufacturers?

A: BAT42W-E3-08 (Vishay) and BAT42W_R1_00001 (Panjit) both maintain 30V reverse voltage and 200mA current rating in SOD-123 package. Forward voltage specifications differ: BAT42W-E3-08 specifies 650mV @ 50mA while BAT42W_R1_00001 specifies 1000mV @ 200mA. Reverse leakage current also differs (500nA @ 25V for Vishay versus 500nA @ 30V for Panjit). Both are RoHS3 compliant.

Q: Is SD101CW-E3-08 suitable as a substitute for MMSD301T1G?

A: SD101CW-E3-08 is rated for 40V reverse voltage but only 30mA average rectified current. This part provides higher voltage margin but significantly reduced current capacity. Substitution is only appropriate for applications where current requirement does not exceed 30mA and higher voltage rating is beneficial.

Q: What inventory levels should I consider for procurement?

A: MMSD301T1G has 505,100 pieces in stock. SMMSD301T1G (parametric equivalent) has 11,633 pieces. Higher-current alternatives PMEG3020EGWX (13,518 pcs) and BAT42W_R1_00001 (39,220 pcs) offer substantial inventory availability. Specific inventory levels should be verified with supplier for current availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message