2SB1116-U-TP Equivalent & Substitute Parts

Part Overview

The 2SB1116-U-TP is a Surface Mount PNP Bipolar Junction Transistor manufactured by Micro Commercial Co, rated for 50V collector-emitter breakdown voltage and 1A maximum collector current in a SOT-23 package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and production continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal operating ranges while supporting the same surface mount package footprint.

Substiute Parts

2SB1116-U-TP

Micro Commercial CoIn Stock: 6892SB1116-U-TP Datasheet

Current PartRFQ

DPBT8105-7

Diodes IncorporatedIn Stock: 101110DPBT8105-7 Datasheet

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FMMT591QTA

Diodes IncorporatedIn Stock: 8385FMMT591QTA Datasheet

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PBSS5240TVL

Nexperia USA Inc.In Stock: 11243PBSS5240TVL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SB1116-U-TP is determined by the following electrical and mechanical criteria:

Primary Compatibility Requirements:

• Transistor type must be PNP
• Collector-emitter breakdown voltage must equal or exceed 50V
• Maximum collector current must equal or exceed 1A
• Package must be SOT-23-3 (TO-236-3, SC-59) for mechanical compatibility
• Operating temperature range must encompass -55°C to 150°C
• RoHS3 compliance required

Secondary Considerations:

• Power dissipation capability
• Transition frequency
• DC current gain characteristics
• Saturation voltage performance

The substitute parts identified below meet or exceed the primary compatibility requirements, enabling direct functional replacement in applications designed for the 2SB1116-U-TP.

Parameter Comparison

Engineering Selection Recommendations

DPBT8105-7 (Diodes Incorporated)

The DPBT8105-7 is an active production part with electrical ratings that exceed the 2SB1116-U-TP across voltage (60V vs. 50V) and power dissipation (600mW vs. 350mW). The part maintains identical collector current (1A) and operating temperature range. ROHS3 compliance and unlimited moisture sensitivity rating ensure regulatory and manufacturing compatibility. The higher transition frequency (150MHz vs. 70MHz) provides performance margin for switching applications. This part is suitable for direct substitution in applications where the higher saturation voltage (600mV vs. 300mV) does not create circuit constraints.

FMMT591QTA (Diodes Incorporated)

The FMMT591QTA is an active production part with automotive-grade qualification (AEC-Q101) and identical electrical specifications to the DPBT8105-7, with the exception of reduced power dissipation (500mW vs. 600mW) and improved saturation voltage (350mV vs. 600mV). This part is suitable for applications requiring automotive-grade reliability and lower saturation voltage performance. ROHS3 compliance and unlimited moisture sensitivity rating are maintained.

PBSS5240TVL (Nexperia USA Inc.)

The PBSS5240TVL is an active production part with doubled collector current capability (2A vs. 1A) and higher transition frequency (100MHz vs. 70MHz). However, the maximum collector-emitter breakdown voltage is reduced to 40V, which is below the 2SB1116-U-TP specification of 50V. This part is suitable for substitution only in applications where the circuit voltage does not exceed 40V. The part maintains ROHS3 compliance and unlimited moisture sensitivity rating. The DC current gain matches the original part specification (300 @ 100mA, 2V).

Frequently Asked Questions (FAQ)

Q: Can the PBSS5240TVL be used as a direct replacement for the 2SB1116-U-TP?

A: The PBSS5240TVL is mechanically compatible (SOT-23-3 package) and functionally equivalent for applications operating at voltages not exceeding 40V. Applications requiring the full 50V rating of the original part must use DPBT8105-7 or FMMT591QTA.

Q: What is the primary difference between DPBT8105-7 and FMMT591QTA?

A: Both parts are manufactured by Diodes Incorporated with identical voltage and current ratings. The FMMT591QTA includes automotive-grade qualification (AEC-Q101) and exhibits lower saturation voltage (350mV vs. 600mV). Selection depends on application requirements for automotive compliance and saturation voltage performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts (DPBT8105-7, FMMT591QTA, and PBSS5240TVL) are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the original 2SB1116-U-TP specification.

Q: Does the higher transition frequency of substitute parts affect circuit operation?

A: The substitute parts DPBT8105-7 and FMMT591QTA operate at 150MHz transition frequency, compared to 70MHz for the original part. This higher frequency capability provides performance margin and does not negatively affect circuits designed for the original part. Applications sensitive to switching speed should verify compatibility through circuit simulation or testing.

Q: What is the impact of saturation voltage differences between substitute parts?

A: The 2SB1116-U-TP exhibits 300mV saturation voltage at 50mA/1A. The DPBT8105-7 exhibits 600mV at 100mA/1A, while FMMT591QTA exhibits 350mV at 100mA/1A. Applications with tight voltage margin requirements should evaluate saturation voltage performance against circuit specifications.

Q: Are the substitute parts available in the same packaging format?

A: Yes. All substitute parts are supplied in SOT-23-3 (TO-236-3, SC-59) surface mount packages, maintaining mechanical compatibility with the original 2SB1116-U-TP footprint and assembly process.