FMKA130L Equivalent & Substitute Parts

Part Overview

The FMKA130L is a Schottky rectifier diode manufactured by onsemi, rated for 30 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This component is classified as obsolete, indicating it has been discontinued and is no longer recommended for new designs. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production of systems utilizing this diode.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	410 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 30 V
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
Operating Temperature - Junction	-65°C ~ 125°C
Technology	Schottky
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the FMKA130L is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal 30 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Technology: Must be Schottky
Mounting Type: Must be Surface Mount
Package / Case: Must be DO-214AC (SMA) or compatible surface mount package

Secondary Compatibility Factors:

Forward voltage (Vf) at rated current
Reverse leakage current (Ir)
Operating temperature range
Product status and compliance certifications

Parts are grouped into three categories based on substitution suitability:

Group 1 - Direct Electrical Equivalents (1 A rated current, 30 V rating): Parts with identical or superior electrical characteristics and active product status, suitable for direct replacement in new designs.

Group 2 - Functional Equivalents with Higher Current Rating (≥ 1 A rated current, 30 V rating): Parts rated for higher current capacity that maintain electrical compatibility and can be used in applications where the additional current margin is acceptable.

Group 3 - Alternative Package Options (1 A rated current, 30 V rating): Parts with equivalent electrical specifications but different surface mount packages, requiring PCB layout modification.

Group 4 - Legacy Status Parts: Parts with obsolete or not-for-new-designs status, suitable only for legacy system support or repair applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Ir @ Vr	Package	Temp Range	Product Status	RoHS
FMKA130L	onsemi	30 V	1 A	410 mV @ 1 A	1 mA @ 30 V	DO-214AC (SMA)	-65°C ~ 125°C	Obsolete	REACH Unaffected
MBRA130LT3G	onsemi	30 V	1 A	410 mV @ 1 A	1 mA @ 30 V	DO-214AC (SMA)	-55°C ~ 125°C	Active	ROHS3 Compliant
B130-13-F	Diodes Incorporated	30 V	1 A	500 mV @ 1 A	500 µA @ 30 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	ROHS3 Compliant
B130-E3/61T	Vishay General Semiconductor - Diodes Division	30 V	1 A	520 mV @ 1 A	200 µA @ 30 V	DO-214AC (SMA)	-65°C ~ 125°C	Active	ROHS3 Compliant
B130L-13-F	Diodes Incorporated	30 V	1 A	410 mV @ 1 A	1 mA @ 30 V	DO-214AC (SMA)	-55°C ~ 125°C	Active	ROHS3 Compliant
B130Q-13-F	Diodes Incorporated	30 V	1 A	500 mV @ 1 A	500 µA @ 30 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	ROHS3 Compliant
B330LA-M3/5AT	Vishay General Semiconductor - Diodes Division	30 V	3 A	500 mV @ 3 A	500 µA @ 30 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	ROHS3 Compliant
PMEG3010EP,115	Nexperia USA Inc.	30 V	1 A	360 mV @ 1 A	1.5 mA @ 30 V	SOD-128	-55°C ~ 150°C	Active	ROHS3 Compliant
RBR1L30ATE25	Rohm Semiconductor	30 V	1 A	480 mV @ 1 A	50 µA @ 30 V	DO-214AC (SMA)	-55°C ~ 150°C	Not For New Designs	ROHS3 Compliant
SL13-E3/61T	Vishay General Semiconductor - Diodes Division	30 V	1.5 A	445 mV @ 1 A	200 µA @ 30 V	DO-214AC (SMA)	-55°C ~ 125°C	Active	ROHS3 Compliant
SS13-E3/5AT	Vishay General Semiconductor - Diodes Division	30 V	1 A	500 mV @ 1 A	200 µA @ 30 V	DO-214AC (SMA)	-65°C ~ 125°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Recommended Primary Substitutes (Active Status, Direct Replacement):

MBRA130LT3G (onsemi) is the closest functional equivalent to the FMKA130L. Both are manufactured by onsemi with identical electrical specifications (30 V, 1 A, 410 mV forward voltage). The MBRA130LT3G is active and ROHS3 compliant. The operating temperature range is slightly narrower (-55°C to 125°C versus -65°C to 125°C), which is acceptable for most commercial and industrial applications.

B130L-13-F (Diodes Incorporated) provides direct electrical equivalence with identical forward voltage (410 mV @ 1 A) and reverse leakage (1 mA @ 30 V). This part is active, ROHS3 compliant, and widely available. The operating temperature range is -55°C to 125°C, suitable for standard applications.

Recommended Secondary Substitutes (Active Status, Acceptable Variations):

B130-E3/61T (Vishay General Semiconductor - Diodes Division) maintains the 30 V / 1 A electrical rating with slightly elevated forward voltage (520 mV @ 1 A) and reduced reverse leakage (200 µA @ 30 V). This part is active and ROHS3 compliant with the same operating temperature range as the original (-65°C to 125°C).

SS13-E3/5AT (Vishay General Semiconductor - Diodes Division) provides 30 V / 1 A operation with 500 mV forward voltage and 200 µA reverse leakage. This part is active, ROHS3 compliant, and maintains the full -65°C to 125°C temperature range.

Higher Current Capacity Alternative:

SL13-E3/61T (Vishay General Semiconductor - Diodes Division) is rated for 1.5 A at 30 V, providing additional current margin while maintaining compatible electrical characteristics. This part is active and ROHS3 compliant. The forward voltage at 1 A is 445 mV, and reverse leakage is 200 µA. This option is suitable when design margins or future current requirements warrant the higher rating.

B330LA-M3/5AT (Vishay General Semiconductor - Diodes Division) is rated for 3 A at 30 V, providing maximum current margin. This part is active and ROHS3 compliant. Use this option only when the application requires significantly higher current capacity, as it represents a design upgrade rather than a direct replacement.

Alternative Package Option:

PMEG3010EP,115 (Nexperia USA Inc.) provides 30 V / 1 A operation in a SOD-128 package instead of DO-214AC (SMA). This part features the lowest forward voltage (360 mV @ 1 A) among all substitutes and is active with ROHS3 compliance. PCB layout modification is required for this package change.

Legacy Applications Only:

RBR1L30ATE25 (Rohm Semiconductor) is classified as "Not For New Designs" and should be used only for repair or legacy system support. This part maintains 30 V / 1 A operation with 480 mV forward voltage and excellent reverse leakage characteristics (50 µA @ 30 V).

B130Q-13-F (Diodes Incorporated) is an automotive-grade variant (AEC-Q101 qualified) rated for 30 V / 1 A with extended temperature range (-65°C to 150°C). This part is suitable for automotive applications or systems requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can I directly replace FMKA130L with MBRA130LT3G?

A: Yes. Both parts are manufactured by onsemi with identical electrical specifications (30 V reverse voltage, 1 A average rectified current, 410 mV forward voltage @ 1 A). The MBRA130LT3G is active and ROHS3 compliant. The operating temperature range is -55°C to 125°C compared to the original -65°C to 125°C, which is acceptable for most applications. No circuit modifications are required.

Q: What is the difference between B130L-13-F and B130-13-F?

A: Both parts are manufactured by Diodes Incorporated and rated for 30 V / 1 A in DO-214AC (SMA) packages. The B130L-13-F has 410 mV forward voltage and 1 mA reverse leakage, matching the original FMKA130L specifications. The B130-13-F has 500 mV forward voltage and 500 µA reverse leakage. The B130L-13-F is the closer electrical match. Both are active and ROHS3 compliant.

Q: Can I use a higher current rated diode like SL13-E3/61T (1.5 A) or B330LA-M3/5AT (3 A) as a substitute?

A: Yes. Higher current rated diodes are electrically compatible substitutes because they maintain the 30 V reverse voltage rating and can safely handle the 1 A application current. The additional current capacity provides design margin. However, verify that the forward voltage drop and reverse leakage characteristics are acceptable for your circuit. Use higher current ratings only when the additional margin is beneficial or required.

Q: Why does PMEG3010EP,115 have a different package (SOD-128) than the original?

A: The PMEG3010EP,115 is manufactured by Nexperia in a SOD-128 package instead of the DO-214AC (SMA) package used by FMKA130L. Both packages are surface mount, but they have different footprints and pin configurations. This part requires PCB layout modification and is suitable only when package change is acceptable. The electrical specifications (30 V, 1 A, 360 mV forward voltage) are compatible.

Q: Is RBR1L30ATE25 suitable for new designs?

A: No. RBR1L30ATE25 is classified as "Not For New Designs" by Rohm Semiconductor. This part should be used only for repair of existing systems or legacy product support. For new designs, select from parts with "Active" product status such as MBRA130LT3G, B130L-13-F, B130-E3/61T, or SL13-E3/61T.

Q: What does ROHS3 Compliant mean?

A: ROHS3 Compliant indicates the part meets the Restriction of Hazardous Substances Directive 3 (RoHS 3), which restricts the use of specific hazardous materials in electrical and electronic equipment. All recommended substitute parts are ROHS3 compliant, ensuring regulatory compliance for new designs and manufacturing.

Q: Should I select B130Q-13-F for automotive applications?

A: Yes. B130Q-13-F is an automotive-grade variant manufactured by Diodes Incorporated with AEC-Q101 qualification. This part is rated for 30 V / 1 A with extended temperature range (-65°C to 150°C) and is suitable for automotive systems or applications requiring automotive-grade components. Standard industrial-grade substitutes are not recommended for automotive use.

Q: What is the significance of forward voltage (Vf) differences among substitutes?

A: Forward voltage determines the voltage drop across the diode during conduction. The FMKA130L has 410 mV @ 1 A. Substitutes range from 360 mV (PMEG3010EP,115) to 520 mV (B130-E3/61T). Higher forward voltage increases power dissipation and heat generation. Lower forward voltage reduces power loss. Select based on your circuit's thermal and efficiency requirements. Differences of 50-100 mV are typically acceptable in most applications.

Q: What is reverse leakage current and why does it vary among substitutes?

A: Reverse leakage current (Ir) is the small current that flows through the diode when reverse biased. The FMKA130L has 1 mA @ 30 V. Substitutes range from 50 µA (RBR1L30ATE25) to 500 µA (B130-13-F, B130Q-13-F). Lower reverse leakage is generally preferable for precision circuits and low-power applications. Higher leakage increases standby power consumption. For most rectification applications, variations in this range are acceptable.

Q: Can I mix different substitute parts in the same circuit board?

A: Yes, provided all selected parts meet the circuit's electrical requirements (30 V minimum reverse voltage, 1 A minimum current capacity). However, for consistency and simplified inventory management, it is recommended to standardize on a single substitute part number across a design. If multiple part numbers are used, ensure they are interchangeable without circuit modifications.

Q: What packaging options are available for substitutes?

A: All recommended substitutes use surface mount packages. The majority use DO-214AC (SMA) package, identical to the original FMKA130L. PMEG3010EP,115 uses SOD-128 package, which requires PCB layout modification. Packaging options are specified in the "Supplier Device Package" field of each part's datasheet. Verify package compatibility with your PCB design before selection.

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