MMSD914 Equivalent & Substitute Parts

Part Overview

The MMSD914 is a general-purpose rectifier diode manufactured by onsemi, rated for 100 V DC reverse voltage and 200 mA average rectified current in a surface mount SOD-123 package. This part is classified as obsolete, though it remains in stock with 101,400 units available. The MMSD914 serves applications requiring small-signal rectification, switching, and general-purpose diode functions in compact surface mount form factors.

Due to the obsolete product status of the MMSD914, equivalent and substitute parts are necessary for new designs, long-term supply assurance, and design flexibility. Active alternatives with identical or superior electrical characteristics are available from onsemi and other manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 10 mA	V
Reverse Recovery Time (trr)	4	ns
Current - Reverse Leakage @ Vr	5 µA @ 75 V	µA
Capacitance @ Vr, F	4 pF @ 0V, 1MHz	pF
Mounting Type	Surface Mount	-
Package / Case	SOD-123	-
Operating Temperature - Junction (Max)	150	°C
Technology	Standard	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the MMSD914 are classified into three categories based on electrical and mechanical compatibility:

Direct Manufacturer Equivalents (onsemi): Parts MMSD914T1G, MMSD914T3G, SMMSD914T1G, and SMMSD914T3G are direct equivalents manufactured by onsemi. These parts share identical electrical specifications with the main part: 100 V reverse voltage, 200 mA average rectified current, 1 V forward voltage at 10 mA, 4 ns reverse recovery time, and SOD-123 package. The primary differences are packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and product status (Active versus Obsolete). SMMSD914T1G and SMMSD914T3G include automotive-grade qualification (AEC-Q101).

Parametric Equivalents (Alternative Manufacturers): Part MMSD4448 from Fairchild Semiconductor meets the core electrical requirements: 100 V reverse voltage, 200 mA average rectified current, 4 ns reverse recovery time, and SOD-123 package. Minor parameter variations exist in forward voltage measurement conditions (1 V @ 100 mA versus 1 V @ 10 mA) and junction capacitance (2 pF versus 4 pF).

Similar Parts (Functional Alternatives): Parts BAS16D-E3-08, BAS16H,115, and BAV19W-7-F provide functional alternatives with variations in electrical specifications. These parts maintain the 100 V reverse voltage rating and SOD-123 package but differ in average rectified current (250 mA or 400 mA), forward voltage characteristics, reverse recovery time, and leakage current. These alternatives are suitable for applications where the higher current ratings or different speed characteristics are acceptable.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max) [V]	Io [mA]	Vf (Max) [V]	trr [ns]	Package	Packaging Format	Automotive Grade
MMSD914	onsemi	Obsolete	100	200	1 @ 10 mA	4	SOD-123	-	No
MMSD914T1G	onsemi	Active	100	200	1 @ 10 mA	4	SOD-123	Cut Tape & Digi-Reel	No
MMSD914T3G	onsemi	Active	100	200	1 @ 10 mA	4	SOD-123	Tape & Reel	No
SMMSD914T1G	onsemi	Active	100	200	1 @ 10 mA	4	SOD-123	Tape & Reel	Yes (AEC-Q101)
SMMSD914T3G	onsemi	Active	100	200	1 @ 10 mA	4	SOD-123	Tape & Reel	Yes (AEC-Q101)
SMMSD4148T1G	onsemi	Active	100	200	1 @ 10 mA	4	SOD-123	Cut Tape & Digi-Reel	No
SMMSD4148T3G	onsemi	Active	100	200	1 @ 10 mA	4	SOD-123	Tape & Reel	No
MMSD4448	Fairchild Semiconductor	Active	100	200	1 @ 100 mA	4	SOD-123	Bulk	No
BAS16D-E3-08	Vishay General Semiconductor	Active	75	250	1.25 @ 150 mA	6	SOD-123	Tape & Reel	No
BAS16H,115	NXP USA Inc.	Active	100	215	1.25 @ 150 mA	4	SOD-123F	Bulk	Yes (AEC-Q101)
BAV19W-7-F	Diodes Incorporated	Active	100	400	1.25 @ 200 mA	50	SOD-123	Cut Tape & Digi-Reel	No

Engineering Selection Recommendations

For Direct Replacement: Select MMSD914T1G or MMSD914T3G for applications requiring identical electrical specifications and non-automotive use. Both parts are active products from onsemi with 100% electrical compatibility. MMSD914T1G is available in Cut Tape & Digi-Reel format (236,100 units in stock), while MMSD914T3G is available in Tape & Reel format (10,400 units in stock).

For Automotive Applications: Select SMMSD914T1G or SMMSD914T3G. Both parts maintain identical electrical specifications to the MMSD914 and include AEC-Q101 automotive qualification. SMMSD914T1G is available in Tape & Reel format (21,100 units in stock), and SMMSD914T3G is available in Tape & Reel format (15,120 units in stock).

For Alternative Manufacturers: Select MMSD4448 from Fairchild Semiconductor for parametric equivalence. This part meets all core electrical requirements with minor variations in forward voltage measurement conditions and junction capacitance. Inventory is limited (1,145 units).

For Higher Current Applications: Select BAV19W-7-F from Diodes Incorporated if the application requires 400 mA average rectified current instead of 200 mA. This part maintains 100 V reverse voltage and SOD-123 package but operates with longer reverse recovery time (50 ns versus 4 ns).

For Voltage-Reduced Applications: Select BAS16D-E3-08 from Vishay if the application operates at 75 V or lower reverse voltage. This part supports 250 mA average rectified current and includes fast recovery characteristics.

All recommended substitutes are ROHS3 compliant and REACH unaffected, matching the compliance status of the MMSD914.

Frequently Asked Questions (FAQ)

Q: Can MMSD914T1G and MMSD914T3G be used interchangeably with MMSD914?

A: Yes. Both parts are direct onsemi equivalents with identical electrical specifications: 100 V reverse voltage, 200 mA average rectified current, 1 V forward voltage at 10 mA, 4 ns reverse recovery time, and SOD-123 package. The primary difference is packaging format. MMSD914T1G uses Cut Tape & Digi-Reel format, while MMSD914T3G uses Tape & Reel format. Select based on your assembly process requirements.

Q: What is the difference between MMSD914T1G and SMMSD914T1G?

A: Both parts share identical electrical specifications and Tape & Reel packaging. SMMSD914T1G includes automotive-grade qualification (AEC-Q101), making it suitable for automotive applications. MMSD914T1G is for general industrial use. If your application does not require automotive qualification, either part is acceptable.

Q: Can BAV19W-7-F replace MMSD914 in all applications?

A: BAV19W-7-F is not a direct replacement. While it maintains 100 V reverse voltage and SOD-123 package, it differs in three key parameters: average rectified current (400 mA versus 200 mA), forward voltage (1.25 V @ 200 mA versus 1 V @ 10 mA), and reverse recovery time (50 ns versus 4 ns). Use BAV19W-7-F only in applications where higher current capacity and longer recovery time are acceptable.

Q: Is BAS16H,115 compatible with MMSD914?

A: BAS16H,115 is a functional alternative, not a direct replacement. It maintains 100 V reverse voltage but differs in package type (SOD-123F versus SOD-123), average rectified current (215 mA versus 200 mA), forward voltage (1.25 V @ 150 mA versus 1 V @ 10 mA), and includes automotive qualification. Verify PCB footprint compatibility before selection.

Q: What is the difference between MMSD4448 and MMSD914?

A: MMSD4448 from Fairchild Semiconductor is a parametric equivalent with identical reverse voltage (100 V), average rectified current (200 mA), reverse recovery time (4 ns), and SOD-123 package. Minor differences exist in forward voltage measurement conditions (1 V @ 100 mA versus 1 V @ 10 mA) and junction capacitance (2 pF versus 4 pF). These differences are negligible for most general-purpose rectification applications.

Q: Which substitute part has the highest current rating?

A: BAV19W-7-F from Diodes Incorporated has the highest average rectified current rating at 400 mA, compared to 200 mA for MMSD914. However, it also has a significantly longer reverse recovery time (50 ns versus 4 ns), which may affect switching performance in high-frequency applications.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are RoHS3 compliant and REACH unaffected, matching the compliance status of the MMSD914. Verify specific compliance documentation with your supplier for your application requirements.

Q: What packaging formats are available for MMSD914 equivalents?

A: onsemi offers MMSD914 equivalents in three packaging formats: Cut Tape & Digi-Reel (MMSD914T1G), Tape & Reel (MMSD914T3G and SMMSD914T1G/T3G), and Bulk (MMSD4448 from Fairchild). Select based on your assembly equipment and volume requirements.

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