MSS40-448-E40 Equivalent & Substitute Parts

Part Overview

The MSS40-448-E40 is an RF Schottky diode manufactured by MACOM Technology Solutions, configured as a single-bridge device in beamlead packaging. This component is classified as Active product status and is suitable for RF applications requiring low-capacitance switching characteristics. The device operates across a temperature range of -65°C to 150°C with a peak reverse voltage rating of 3V and maximum current handling of 50 mA.

Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the E45 package family. Substitution becomes necessary when the primary part number reaches end-of-life status, inventory constraints occur, or design flexibility is required across manufacturing revisions.

Key Parameters

Parameter	MSS40-448-E40 Value	Unit
Diode Type	Schottky - 1 Bridge	—
Voltage - Peak Reverse (Max)	3	V
Current - Max	50	mA
Power Dissipation (Max)	100	mW
Capacitance @ Vr, F	0.3	pF @ 0V, 1MHz
Resistance @ If, F	7	Ohm @ 5mA, 1MHz
Operating Temperature	-65 to 150	°C
Package / Case	E45	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the MSS40-448-E40 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Diode Type: Schottky - 1 Bridge
Voltage - Peak Reverse (Max): 3V
Current - Max: 50 mA
Power Dissipation (Max): 100 mW
Operating Temperature Range: -65°C to 150°C
Package / Case: E45
Moisture Sensitivity Level: 1 (Unlimited)

Variable Parameters (Non-Critical for Substitution):

Capacitance @ Vr, F: Range 0.13 pF to 0.33 pF @ 0V, 1MHz
Resistance @ If, F: 7 Ohm @ 5mA, 1MHz (where specified)
Supplier Device Package designation
Base Product Number series (MSS30, MSS40, MSS50, MSS60)

All identified substitute parts maintain identical electrical performance across mandatory parameters while operating within the same mechanical envelope. Variations in capacitance and resistance characteristics reflect different internal geometries within the same package family and do not affect functional interchangeability for standard RF switching applications.

Parameter Comparison

Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Max	Power Dissipation (Max)	Capacitance @ Vr, F	Resistance @ If, F	Operating Temperature	Package / Case	Product Status	Inventory (Pcs)
MSS40-448-E40	MACOM	3V	50 mA	100 mW	0.3 pF @ 0V, 1MHz	7 Ohm @ 5mA, 1MHz	-65 to 150°C	E45	Active	863
MSS30-B46-B45	MACOM	3V	50 mA	100 mW	0.13 pF @ 0V, 1MHz	—	-65 to 150°C	E45	Active	2052
MSS30-B53-E45	MACOM	3V	50 mA	100 mW	0.33 pF @ 0V, 1MHz	—	-65 to 150°C	E45	Active	2252
MSS40-448-E45	MACOM	3V	50 mA	100 mW	0.3 pF @ 0V, 1MHz	7 Ohm @ 5mA, 1MHz	-65 to 150°C	E45	Active	1083
MSS40-448-E45R	MACOM	3V	50 mA	100 mW	0.3 pF @ 0V, 1MHz	7 Ohm @ 5mA, 1MHz	-65 to 150°C	E45	Active	892
MSS50-B46-B45	MACOM	3V	50 mA	100 mW	0.13 pF @ 0V, 1MHz	—	-65 to 150°C	E45	Active	1050
MSS50-B53-E45	MACOM	3V	50 mA	100 mW	0.33 pF @ 0V, 1MHz	—	-65 to 150°C	E45	Active	1199
MSS60-B46-E45	MACOM	3V	50 mA	100 mW	0.2 pF @ 0V, 1MHz	—	-65 to 150°C	E45	Active	641
MSS60-B53-E45	MACOM	3V	50 mA	100 mW	0.25 pF @ 0V, 1MHz	—	-65 to 150°C	E45	Active	903

Engineering Selection Recommendations

All substitute parts listed maintain Active product status with MACOM Technology Solutions and carry identical compliance certifications (ECCN: EAR99, MSL: 1). Selection among equivalent parts is based on the following criteria:

Direct Electrical Match: MSS40-448-E45 and MSS40-448-E45R provide identical electrical characteristics to the primary part MSS40-448-E40, including specified resistance values of 7 Ohm @ 5mA, 1MHz and capacitance of 0.3 pF @ 0V, 1MHz. These parts differ only in package designation (E45 versus E45R) and represent the closest functional equivalents.

Capacitance-Optimized Alternatives: Parts with lower capacitance (0.13 pF) include MSS30-B46-B45 and MSS50-B46-B45. Parts with higher capacitance (0.33 pF) include MSS30-B53-E45 and MSS50-B53-E45. Mid-range capacitance options (0.2 to 0.25 pF) are available in the MSS60 series (MSS60-B46-E45 and MSS60-B53-E45).

Inventory Availability: MSS30-B53-E45 offers the highest inventory level at 2252 pieces. MSS30-B46-B45 provides 2052 pieces. All substitute parts maintain sufficient stock for production requirements.

Series Compatibility: The MSS30, MSS50, and MSS60 series represent alternative internal geometries within the E45 package family. Selection between series depends on application-specific capacitance requirements while maintaining all other electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can MSS40-448-E45 be used as a direct replacement for MSS40-448-E40?

A: Yes. MSS40-448-E45 is electrically and mechanically equivalent to MSS40-448-E40. Both parts share identical voltage, current, power dissipation, capacitance, and resistance specifications. The difference in part number designation reflects packaging or manufacturing revision only.

Q: What is the difference between MSS40-448-E45 and MSS40-448-E45R?

A: Both parts are electrically identical with matching 3V peak reverse voltage, 50 mA maximum current, 100 mW power dissipation, 0.3 pF capacitance, and 7 Ohm resistance. The "R" designation in MSS40-448-E45R indicates a packaging or supplier variant. Both are suitable for direct substitution.

Q: Are parts from different series (MSS30, MSS40, MSS50, MSS60) interchangeable?

A: Parts from different series are mechanically and electrically interchangeable when all mandatory parameters match: 3V peak reverse voltage, 50 mA maximum current, 100 mW power dissipation, -65°C to 150°C operating temperature, and E45 package. Series designation reflects internal geometry variations that affect capacitance characteristics but do not impact functional compatibility for standard RF switching applications.

Q: What capacitance values are available across the substitute parts?

A: Capacitance values range from 0.13 pF to 0.33 pF @ 0V, 1MHz. MSS30 and MSS50 series with B46 designation provide 0.13 pF. MSS60-B46-E45 provides 0.2 pF. MSS60-B53-E45 provides 0.25 pF. MSS30-B53-E45 and MSS50-B53-E45 provide 0.33 pF. MSS40-448-E40 and MSS40-448-E45 provide 0.3 pF.

Q: Does the E45 package designation remain consistent across all substitutes?

A: Yes. All substitute parts use the E45 beamlead package. This ensures mechanical compatibility and identical PCB footprint requirements. The package designation is a mandatory matching parameter for substitution eligibility.

Q: What is the moisture sensitivity level for these parts?

A: All parts, including the primary MSS40-448-E40 and all substitutes, carry MSL rating of 1 (Unlimited). This indicates no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions.

Q: Are there any compliance or certification differences between substitute parts?

A: No. All parts carry identical ECCN classification (EAR99) and HTSUS codes. Compliance certifications are uniform across the primary part and all substitutes, ensuring regulatory equivalence for procurement and export purposes.

Q: Which substitute part offers the best inventory availability?

A: MSS30-B53-E45 provides the highest inventory level at 2252 pieces in stock. MSS30-B46-B45 follows with 2052 pieces. Both MSS30 series parts offer superior availability compared to other substitutes.

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