MSC3930-BT1G Equivalent & Substitute Parts

Part Overview

The MSC3930-BT1G is an RF transistor NPN manufactured by onsemi, rated for 20V collector-emitter breakdown voltage with a transition frequency of 150MHz and maximum power dissipation of 200mW. The device is packaged in SC-70 (SOT-323) surface mount configuration and is classified as obsolete product status.

Due to the obsolete status of the MSC3930-BT1G, equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. The substitute parts listed below provide functional alternatives with comparable or enhanced electrical characteristics within the RF transistor NPN category.

Key Parameters

Parameter	MSC3930-BT1G	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	20V	V
Frequency - Transition	150MHz	MHz
Power - Max	200mW	mW
Current - Collector (Ic) (Max)	30mA	mA
DC Current Gain (hFE) (Min)	70 @ 1mA, 10V	—
Operating Temperature (TJ)	150°C	°C
Mounting Type	Surface Mount	—
Package / Case	SC-70, SOT-323	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the MSC3930-BT1G is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN (required match)
Voltage - Collector Emitter Breakdown (Max): Equal to or greater than 20V
Frequency - Transition: Equal to or greater than 150MHz
Power - Max: Equal to or greater than 200mW
Current - Collector (Ic) (Max): Equal to or greater than 30mA
DC Current Gain (hFE) (Min): Equal to or greater than 70
Operating Temperature (TJ): Equal to or greater than 150°C
Mounting Type: Surface Mount (required match)
Moisture Sensitivity Level (MSL): 1 (Unlimited) or equivalent

Secondary Compatibility Considerations:

Package / Case: SC-70 (SOT-323) or compatible surface mount packages
Product Status: Active status preferred for long-term availability

The substitute parts are grouped into two categories: Upgrade Substitutes (enhanced performance characteristics) and Similar Substitutes (comparable performance with trade-offs in specific parameters).

Parameter Comparison

Parameter	MSC3930-BT1G	BFR93AWH6327XTSA1	2SC4915-Y,LF	BFP196WH6327XTSA1	BFP410H6327XTSA1	BFR35APE6327HTSA1	BFS 17P E6433	Unit
Manufacturer	onsemi	Infineon Technologies	Toshiba Semiconductor and Storage	Infineon Technologies	Infineon Technologies	Infineon Technologies	Infineon Technologies	—
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN	NPN	—
Voltage - Collector Emitter Breakdown (Max)	20V	12V	30V	12V	5V	15V	15V	V
Frequency - Transition	150MHz	6GHz	550MHz	7.5GHz	25GHz	5GHz	1.4GHz	MHz/GHz
Power - Max	200mW	300mW	100mW	700mW	150mW	280mW	280mW	mW
Current - Collector (Ic) (Max)	30mA	90mA	20mA	150mA	40mA	45mA	25mA	mA
DC Current Gain (hFE) (Min)	70 @ 1mA, 10V	70 @ 30mA, 8V	100 @ 1mA, 6V	70 @ 50mA, 8V	60 @ 13mA, 2V	70 @ 15mA, 8V	40 @ 2mA, 1V	—
Operating Temperature (TJ)	150°C	150°C	125°C	150°C	150°C	150°C	150°C	°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	—
Package / Case	SC-70, SOT-323	SC-70, SOT-323	SC-75, SOT-416	SC-82A, SOT-343	SC-82A, SOT-343	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	—
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	—
RoHS Status	—	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

Upgrade Substitute - BFR93AWH6327XTSA1 (Infineon Technologies)

The BFR93AWH6327XTSA1 meets all primary substitution criteria with enhanced frequency performance (6GHz vs. 150MHz) and increased power dissipation (300mW vs. 200mW). This device maintains the same SC-70 (SOT-323) package footprint, enabling direct PCB layout compatibility. The part is ROHS3 compliant and carries active product status, ensuring long-term availability. Voltage rating of 12V is lower than the original 20V specification; applications requiring the full 20V rating must select alternative parts.

Upgrade Substitute - BFP196WH6327XTSA1 (Infineon Technologies)

The BFP196WH6327XTSA1 provides the highest power dissipation (700mW) and frequency performance (7.5GHz) among available substitutes. This part exceeds all electrical performance parameters of the MSC3930-BT1G. The package is SC-82A (SOT-343), requiring PCB layout modification. ROHS3 compliance and active product status support long-term design continuity. Voltage rating of 12V is lower than the original specification.

Upgrade Substitute - BFP410H6327XTSA1 (Infineon Technologies)

The BFP410H6327XTSA1 delivers the highest frequency capability (25GHz) with active product status and ROHS3 compliance. This part is suitable for applications requiring extended frequency performance. The SC-82A (SOT-343) package requires PCB layout modification. Voltage rating of 5V and power rating of 150mW are significantly lower than the original specification; applications must operate within these reduced parameters.

Similar Substitute - 2SC4915-Y,LF (Toshiba Semiconductor and Storage)

The 2SC4915-Y,LF exceeds the original voltage rating (30V vs. 20V) and provides higher frequency performance (550MHz vs. 150MHz). This part maintains active product status and RoHS compliance. The SC-75 (SOT-416) package differs from the original SC-70 (SOT-323), requiring PCB layout modification. Operating temperature maximum of 125°C is lower than the original 150°C specification.

Similar Substitute - BFR35APE6327HTSA1 (Infineon Technologies)

The BFR35APE6327HTSA1 provides voltage rating of 15V (lower than 20V) with enhanced frequency performance (5GHz vs. 150MHz) and power dissipation (280mW vs. 200mW). The TO-236-3 (SC-59, SOT-23-3) package requires PCB layout modification. ROHS3 compliance and active product status ensure availability. This part is suitable for applications with reduced voltage requirements.

Similar Substitute - BFS 17P E6433 (Infineon Technologies)

The BFS 17P E6433 operates at 15V with lower frequency performance (1.4GHz vs. 150MHz) and reduced DC current gain (40 vs. 70). The TO-236-3 (SC-59, SOT-23-3) package requires PCB layout modification. ROHS3 compliance and active product status support long-term availability. This part is suitable for lower-frequency applications with reduced current gain requirements.

Frequently Asked Questions (FAQ)

Q: Can BFR93AWH6327XTSA1 be used as a direct replacement for MSC3930-BT1G?

A: The BFR93AWH6327XTSA1 maintains the same SC-70 (SOT-323) package, enabling direct PCB footprint compatibility. However, the voltage rating is reduced from 20V to 12V. Applications operating at voltages exceeding 12V require alternative parts. All other electrical parameters meet or exceed the original specification.

Q: What is the primary difference between upgrade and similar substitutes?

A: Upgrade substitutes (BFR93AWH6327XTSA1, BFP196WH6327XTSA1, BFP410H6327XTSA1) exceed all primary electrical parameters of the MSC3930-BT1G while maintaining or improving performance. Similar substitutes (2SC4915-Y,LF, BFR35APE6327HTSA1, BFS 17P E6433) provide functional alternatives with trade-offs in specific parameters such as voltage rating, frequency, or current gain.

Q: Do all substitute parts require PCB layout modifications?

A: BFR93AWH6327XTSA1 maintains the original SC-70 (SOT-323) package and requires no PCB layout modification. All other substitute parts use different packages (SC-75, SC-82A, or TO-236-3) and require PCB layout redesign.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed carry RoHS compliance certification (ROHS3 or RoHS Compliant). The original MSC3930-BT1G does not specify RoHS status.

Q: Which substitute part has the lowest voltage rating?

A: The BFP410H6327XTSA1 has the lowest voltage rating at 5V collector-emitter breakdown. Applications requiring higher voltage operation must select parts with ratings of 12V or greater.

Q: What is the operating temperature range for substitute parts?

A: Most substitute parts operate at maximum junction temperature of 150°C, matching the original MSC3930-BT1G specification. The 2SC4915-Y,LF operates at a maximum of 125°C, which is 25°C lower than the original specification.

Q: Can BFP196WH6327XTSA1 be used in all applications designed for MSC3930-BT1G?

A: The BFP196WH6327XTSA1 exceeds all electrical performance parameters but operates at 12V maximum voltage (vs. 20V original) and uses a different package (SC-82A vs. SC-70). Applications must verify voltage compatibility and accommodate PCB layout changes.

Q: Which substitute part provides the closest frequency match to the original MSC3930-BT1G?

A: The BFS 17P E6433 provides the closest frequency match at 1.4GHz, though this still exceeds the original 150MHz specification. For applications requiring lower frequency performance, this part is suitable with consideration for reduced DC current gain (40 vs. 70).

Q: Are all substitute parts available in active production status?

A: All substitute parts listed carry active product status, ensuring long-term availability and supply continuity. The original MSC3930-BT1G is classified as obsolete.

Q: What moisture sensitivity level applies to all substitute parts?

A: All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity level, matching the original MSC3930-BT1G specification. No special moisture control measures are required during storage or handling.

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