MPSH10 RF Transistor NPN Equivalent & Substitute Parts

Part Overview

The MPSH10 is an RF transistor NPN designed for UHF/VHF applications, manufactured by Central Semiconductor Corp. This through-hole device operates at 25V collector-emitter breakdown voltage with a transition frequency of 650MHz and maximum power dissipation of 350mW. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	25V
Frequency - Transition	650MHz
Power - Max	350mW
DC Current Gain (hFE) (Min) @ Ic, Vce	60 @ 4mA, 10V
Operating Temperature	-65°C ~ 150°C (TJ)
Mounting Type	Through Hole
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MPSH10 is determined by the following critical parameters:

Primary Substitution Criteria:

Transistor Type: NPN (mandatory match)
Voltage - Collector Emitter Breakdown (Max): 25V or higher
Frequency - Transition: 650MHz or higher
Power - Max: 350mW or higher
DC Current Gain (hFE): 60 or higher at specified conditions
Operating Temperature: -65°C to 150°C or wider range
Mounting Type: Through Hole (for direct mechanical replacement)

Substitute parts are grouped into two categories:

Category 1: Direct Through-Hole Equivalents Parts maintaining through-hole mounting with compatible electrical parameters.

Category 2: Surface Mount Alternatives Parts with superior electrical specifications but requiring circuit board redesign due to surface mount packaging.

Parameter Comparison

Parameter	MPSH10	KSP10TA	2SC5226A-4-TL-E	2SC5415AF-TD-E	BF776H6327XTSA1
Transistor Type	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	25V	25V	10V	12V	4.7V
Frequency - Transition	650MHz	650MHz	7GHz	6.7GHz	46GHz
Power - Max	350mW	350mW	150mW	800mW	200mW
DC Current Gain (hFE) (Min) @ Ic, Vce	60 @ 4mA, 10V	60 @ 4mA, 10V	90 @ 20mA, 5V	90 @ 30mA, 5V	180 @ 30mA, 3V
Operating Temperature	-65°C ~ 150°C	150°C	150°C	150°C	150°C
Mounting Type	Through Hole	Through Hole	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Obsolete	Active

Engineering Selection Recommendations

KSP10TA (Fairchild Semiconductor) - Direct Through-Hole Equivalent

The KSP10TA is the primary direct substitute for MPSH10 applications. It maintains identical electrical specifications: 25V collector-emitter breakdown voltage, 650MHz transition frequency, 350mW maximum power, and 60 hFE minimum gain. The part is packaged in TO-92-3 through-hole configuration, enabling direct board-level replacement without circuit redesign. Product status is active with 2100 units in stock, ensuring long-term availability. ECCN and HTSUS classifications match the original part.

2SC5226A-4-TL-E (onsemi) - Surface Mount Alternative

This part offers enhanced RF performance with 7GHz transition frequency and higher current gain (90 hFE). However, the 10V collector-emitter breakdown voltage is below the MPSH10 specification, and maximum power is reduced to 150mW. Surface mount SC-70 packaging requires circuit board modification. This option is suitable only for applications where voltage and power requirements can be reduced. Product status is active with 16837 units available.

2SC5415AF-TD-E (onsemi) - Surface Mount Alternative

This part provides 800mW maximum power and 6.7GHz transition frequency with 90 hFE gain. The 12V collector-emitter breakdown voltage is below MPSH10 specification. Surface mount PCP packaging requires board redesign. Product status is obsolete. This option is not recommended for new designs.

BF776H6327XTSA1 (Infineon Technologies) - High-Frequency Surface Mount Alternative

This part delivers 46GHz transition frequency and 180 hFE gain with 200mW power. The 4.7V collector-emitter breakdown voltage is significantly below MPSH10 specification, limiting application scope. Surface mount SC-82A/SOT-343 packaging requires board modification. Product status is active with 1490 units in stock. This option is suitable only for applications requiring ultra-high frequency performance with reduced voltage requirements.

MAPR-002729-170M00 and MAPRST0912-50 (MACOM Technology Solutions) - High-Power Chassis Mount Alternatives

These parts are designed for high-power RF applications with 65V collector-emitter breakdown voltage and significantly higher power dissipation (170W and 50W respectively). Chassis mount packaging is incompatible with through-hole PCB designs. These options are suitable only for discrete high-power amplifier circuits requiring substantial power handling.

Frequently Asked Questions (FAQ)

Q: Can KSP10TA replace MPSH10 in all applications?

A: Yes, KSP10TA is a direct electrical and mechanical equivalent. It maintains identical voltage, frequency, power, and gain specifications while offering active product status and improved availability compared to the obsolete MPSH10.

Q: What is the primary difference between through-hole and surface mount substitutes?

A: Through-hole substitutes (KSP10TA) mount directly into existing PCB holes without circuit board redesign. Surface mount substitutes (2SC5226A-4-TL-E, 2SC5415AF-TD-E, BF776H6327XTSA1) require PCB layout modification and specialized assembly equipment. Surface mount options typically offer enhanced RF performance but reduced voltage or power ratings.

Q: Why do some substitutes have lower collector-emitter breakdown voltage than MPSH10?

A: Surface mount RF transistors are optimized for higher frequency operation, which often requires lower voltage ratings. Parts like BF776H6327XTSA1 (4.7V) and 2SC5226A-4-TL-E (10V) are designed for applications where voltage requirements are reduced but frequency performance is critical. These parts are not suitable for circuits requiring 25V operation.

Q: Is 2SC5415AF-TD-E recommended as a substitute?

A: No. Although 2SC5415AF-TD-E appears in the substitute list, it has obsolete product status, 12V collector-emitter breakdown voltage below MPSH10 specification, and reduced maximum power (800mW vs 350mW). KSP10TA is the recommended active substitute.

Q: What certifications apply to substitute parts?

A: All listed substitutes carry ECCN EAR99 classification and ROHS3 compliance (where applicable). Moisture Sensitivity Level is 1 (Unlimited) for all parts, matching MPSH10 specifications. REACH status is unaffected for surface mount alternatives.

Q: Can MACOM parts replace MPSH10 in standard RF circuits?

A: No. MACOM parts (MAPR-002729-170M00, MAPRST0912-50) are chassis mount high-power devices designed for discrete amplifier stages. They are incompatible with through-hole PCB designs and are suitable only for specialized high-power RF applications requiring 65V operation and power levels exceeding 50W.

Q: What is the minimum transition frequency required for substitution?

A: The minimum acceptable transition frequency is 650MHz, matching MPSH10 specification. Substitutes with higher transition frequencies (7GHz, 6.7GHz, 46GHz) are acceptable and provide enhanced RF performance. Lower frequency parts are not suitable.

Q: Are there inventory considerations for substitute selection?

A: KSP10TA has 2100 units in stock, providing adequate supply for most applications. BF776H6327XTSA1 has 1490 units available. 2SC5226A-4-TL-E has 16837 units in stock. MACOM parts have lower inventory (788 and 1028 units respectively). For long-term production, KSP10TA offers the best balance of availability and direct compatibility.

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