MPSH11 Equivalent & Substitute Parts

Part Overview

The MPSH11 is an RF transistor NPN manufactured by onsemi, rated for 25V collector-emitter breakdown voltage with a transition frequency of 650MHz and maximum power dissipation of 350mW. This device is packaged in a through-hole TO-92-3 configuration and is classified as obsolete. Due to its obsolete status, equivalent substitute parts are necessary for new designs and ongoing production requirements. Substitute parts listed below provide functional alternatives with comparable or enhanced electrical characteristics suitable for RF applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	25	V
Frequency - Transition	650	MHz
Power - Max	350	mW
Current - Collector (Ic) (Max)	50	mA
DC Current Gain (hFE) (Min)	60	@ 4mA, 10V
Operating Temperature	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-92-3	—

Substitute Part Grouping Explanation

Substitution of the MPSH11 is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN (required match)
Voltage - Collector Emitter Breakdown (Max): Must equal or exceed 25V
Frequency - Transition: Must equal or exceed 650MHz
Power - Max: Must equal or exceed 350mW
Current - Collector (Ic) (Max): Must equal or exceed 50mA
DC Current Gain (hFE): Must meet or exceed 60 at specified conditions
Operating Temperature Range: Must support -55°C to 150°C or equivalent maximum

Secondary Considerations:

Mounting Type: Through-hole preferred; surface-mount alternatives acceptable with appropriate circuit board modifications
Package compatibility: TO-92-3 through-hole is primary; alternative packages require PCB redesign

Substitute parts are grouped based on their ability to meet or exceed these parameters while maintaining NPN transistor functionality for RF applications.

Parameter Comparison

Parameter	MPSH11	2SC4915-Y,LF	BFP410H6327XTSA1	BFQ19SH6327XTSA1	BFR35APE6327HTSA1	BFS 17P E6433
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	25V	30V	5V	15V	15V	15V
Frequency - Transition	650MHz	550MHz	25GHz	5.5GHz	5GHz	1.4GHz
Power - Max	350mW	100mW	150mW	1W	280mW	280mW
Current - Collector (Ic) (Max)	50mA	20mA	40mA	120mA	45mA	25mA
DC Current Gain (hFE) (Min)	60 @ 4mA, 10V	100 @ 1mA, 6V	60 @ 13mA, 2V	70 @ 70mA, 8V	70 @ 15mA, 8V	40 @ 2mA, 1V
Operating Temperature (Max)	150°C	125°C	150°C	150°C	150°C	150°C
Mounting Type	Through Hole	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-92-3	SC-75, SOT-416	SC-82A, SOT-343	TO-243AA	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	—	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Product Status Consideration: The MPSH11 is classified as obsolete. All substitute parts listed are classified as active, ensuring ongoing availability and manufacturing support. Selection of an active substitute part is necessary for new designs and production continuity.

Compliance and Certifications: All substitute parts carry RoHS compliance certifications (RoHS Compliant or ROHS3 Compliant), whereas the MPSH11 compliance status is not specified. Substitute parts meet current environmental and regulatory requirements for electronic component manufacturing and distribution.

Voltage Rating Analysis: The MPSH11 specifies 25V maximum collector-emitter breakdown voltage. The 2SC4915-Y,LF provides 30V rating, exceeding the original specification. The BFP410H6327XTSA1 operates at 5V maximum, which does not meet the 25V requirement and is unsuitable for direct substitution in circuits requiring 25V operation. The BFQ19SH6327XTSA1, BFR35APE6327HTSA1, and BFS 17P E6433 all specify 15V maximum, which is below the original 25V rating and unsuitable for applications requiring the full 25V rating.

Frequency Performance: The MPSH11 transition frequency is 650MHz. The 2SC4915-Y,LF operates at 550MHz, below the original specification. The BFP410H6327XTSA1, BFQ19SH6327XTSA1, BFR35APE6327HTSA1, and BFS 17P E6433 all exceed the 650MHz requirement, providing enhanced high-frequency performance.

Power Dissipation: The MPSH11 maximum power is 350mW. The 2SC4915-Y,LF provides only 100mW, insufficient for applications requiring 350mW dissipation. The BFQ19SH6327XTSA1 provides 1W, exceeding the original specification. The BFP410H6327XTSA1, BFR35APE6327HTSA1, and BFS 17P E6433 provide 150mW, 280mW, and 280mW respectively, all below the original 350mW rating.

Current Capability: The MPSH11 maximum collector current is 50mA. The 2SC4915-Y,LF provides 20mA, insufficient for applications requiring 50mA. The BFP410H6327XTSA1 provides 40mA, below the original specification. The BFQ19SH6327XTSA1 provides 120mA, exceeding the original specification. The BFR35APE6327HTSA1 provides 45mA, and BFS 17P E6433 provides 25mA, both below the original 50mA rating.

Mounting Type: The MPSH11 is through-hole mounted (TO-92-3). All substitute parts are surface-mount devices, requiring circuit board redesign for implementation. Through-hole mounting is not available among the listed substitutes.

Recommendation Summary: No single substitute part meets all electrical parameters of the MPSH11 (25V, 650MHz, 350mW, 50mA). Selection of a substitute part requires evaluation of circuit requirements and prioritization of which parameters are critical for the specific application. The 2SC4915-Y,LF is the closest match in voltage rating (30V) but falls short in frequency and power. Applications prioritizing high-frequency performance should consider BFP410H6327XTSA1, BFQ19SH6327XTSA1, or BFR35APE6327HTSA1. All substitutes require PCB redesign due to surface-mount packaging.

Frequently Asked Questions (FAQ)

Q: Can the 2SC4915-Y,LF directly replace the MPSH11 in all applications?

A: No. While the 2SC4915-Y,LF provides a higher voltage rating (30V vs. 25V), it operates at 550MHz transition frequency, below the MPSH11's 650MHz specification. Additionally, it provides only 100mW maximum power versus the MPSH11's 350mW, and 20mA maximum collector current versus 50mA. The 2SC4915-Y,LF is suitable only for applications where the lower frequency, power, and current specifications are acceptable. Surface-mount packaging also requires circuit board modification.

Q: Why do all substitute parts use surface-mount packaging instead of through-hole?

A: The MPSH11 is an obsolete through-hole device. Current RF transistor manufacturing has transitioned to surface-mount technology for improved performance, miniaturization, and manufacturing efficiency. No active RF transistor substitutes are available in through-hole TO-92-3 packaging. Implementation of any substitute requires PCB redesign to accommodate surface-mount packages such as SOT-23-3, SOT-343, or SOT-416.

Q: Which substitute part is best for high-frequency RF applications?

A: The BFP410H6327XTSA1 provides the highest transition frequency at 25GHz, significantly exceeding the MPSH11's 650MHz. However, it operates at only 5V maximum collector-emitter breakdown voltage, unsuitable for circuits requiring 25V operation. For applications requiring both high frequency and higher voltage operation, the BFQ19SH6327XTSA1 (5.5GHz, 15V) or BFR35APE6327HTSA1 (5GHz, 15V) are more appropriate, though both fall short of the original 25V rating.

Q: Is the BFP410H6327XTSA1 suitable as a substitute for the MPSH11?

A: No. The BFP410H6327XTSA1 operates at a maximum of 5V collector-emitter breakdown voltage, which is insufficient for applications designed for the MPSH11's 25V rating. While it provides superior frequency performance (25GHz), the voltage limitation makes it unsuitable for direct substitution in circuits requiring 25V operation.

Q: What are the compliance differences between the MPSH11 and substitute parts?

A: The MPSH11 compliance status is not specified in available documentation. All substitute parts carry current RoHS compliance certifications (RoHS Compliant or ROHS3 Compliant), ensuring compliance with current environmental regulations. For new designs and production, substitute parts with active RoHS certification are required to meet regulatory requirements.

Q: Can the BFQ19SH6327XTSA1 replace the MPSH11 in power-critical applications?

A: The BFQ19SH6327XTSA1 provides 1W maximum power dissipation, exceeding the MPSH11's 350mW specification. However, it operates at only 15V maximum collector-emitter breakdown voltage, below the MPSH11's 25V rating. The BFQ19SH6327XTSA1 is suitable for applications where power dissipation is critical and voltage requirements do not exceed 15V. Surface-mount packaging requires PCB redesign.

Q: What is the operating temperature range compatibility?

A: The MPSH11 operates from -55°C to 150°C. Most substitute parts specify a maximum operating temperature of 150°C. The 2SC4915-Y,LF specifies a maximum of 125°C, which is below the MPSH11's upper limit. For applications requiring operation at temperatures above 125°C, the 2SC4915-Y,LF is unsuitable. All other substitutes support the full 150°C maximum.

Q: Are there any substitute parts that meet or exceed all MPSH11 electrical specifications?

A: No. Each substitute part falls short in at least one critical parameter. The 2SC4915-Y,LF provides adequate voltage but insufficient frequency and power. The BFP410H6327XTSA1 provides excellent frequency but inadequate voltage. The BFQ19SH6327XTSA1 provides excellent power but inadequate voltage. The BFR35APE6327HTSA1 and BFS 17P E6433 provide moderate performance across multiple parameters but do not exceed all original specifications. Application-specific requirements must determine which substitute is most appropriate.

Q: What packaging considerations apply to substitution?

A: The MPSH11 uses through-hole TO-92-3 packaging. All substitutes use surface-mount packages: 2SC4915-Y,LF uses SC-75/SOT-416; BFP410H6327XTSA1 uses SC-82A/SOT-343; BFQ19SH6327XTSA1 uses TO-243AA; BFR35APE6327HTSA1 uses SC-59/SOT-23-3; BFS 17P E6433 uses SC-59/SOT-23-3. Surface-mount implementation requires PCB redesign, including new footprints, trace routing, and potentially different assembly processes.

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