RN1103MFV(TPL3) Equivalent & Substitute Parts

Part Overview

The RN1103MFV(TPL3) is a pre-biased NPN bipolar junction transistor manufactured by Toshiba Semiconductor and Storage. This surface mount device operates at 50 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and 150 mW power dissipation. The part is housed in a SOT-723 package (VESM supplier designation) and is currently in active production status with RoHS compliance.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining compatibility with the application circuit and PCB layout requirements.

Substiute Parts

RN1103MFV(TPL3)

Toshiba Semiconductor and StorageIn Stock: 863RN1103MFV(TPL3) Datasheet

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DTC024EMT2L

Rohm SemiconductorIn Stock: 32139DTC024EMT2L Datasheet

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DTC124EM3T5G

onsemiIn Stock: 129191DTC124EM3T5G Datasheet

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DTC124EMT2L

Rohm SemiconductorIn Stock: 47918DTC124EMT2L Datasheet

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NSBC124EF3T5G

onsemiIn Stock: 5246NSBC124EF3T5G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN1103MFV(TPL3) is determined by the following critical parameters:

Mandatory Matching Criteria:

• Transistor Type: NPN - Pre-Biased
• Voltage - Collector Emitter Breakdown (Max): 50 V
• Resistor - Base (R1): 22 kOhms
• Resistor - Emitter Base (R2): 22 kOhms
• Package / Case: SOT-723
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Performance Parameters (Must Meet or Exceed):

• Current - Collector (Ic) (Max): 100 mA minimum
• Power - Max: 150 mW minimum

Substitute parts are grouped into two categories based on collector current rating:

Category A - Full Current Rating (100 mA): Parts with Ic (Max) of 100 mA or greater maintain identical current handling capability to the main part.

Category B - Reduced Current Rating (30 mA): Parts with Ic (Max) of 30 mA are suitable only for applications where collector current does not exceed 30 mA.

All identified substitutes maintain the 50 V breakdown voltage, identical bias resistor values, SOT-723 package format, and MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

Full Substitutes (100 mA Collector Current Rating):

The DTC124EM3T5G (onsemi) and NSBC124EF3T5G (onsemi) are direct functional equivalents to the RN1103MFV(TPL3). Both parts maintain the 100 mA maximum collector current specification, 50 V breakdown voltage, and identical bias resistor configuration. Both are ROHS3 compliant with REACH unaffected status. The DTC124EM3T5G is packaged in SOT-723 format matching the original part footprint. The NSBC124EF3T5G uses a SOT-1123 package, which requires PCB layout modification but provides equivalent electrical performance.

Reduced Current Substitutes (30 mA Collector Current Rating):

The DTC024EMT2L (Rohm) and DTC124EMT2L (Rohm) are suitable substitutes only for applications where the maximum collector current requirement does not exceed 30 mA. Both parts maintain the 50 V breakdown voltage, identical bias resistor values, SOT-723 package format, and MSL 1 rating. These parts are ROHS3 compliant with REACH unaffected status.

Compliance Status:

All substitute parts maintain RoHS compliance (ROHS3 standard) and MSL 1 moisture sensitivity rating. The original RN1103MFV(TPL3) carries RoHS Compliant designation, while all substitutes carry ROHS3 Compliant designation, indicating compliance with the current RoHS 3 directive.

Frequently Asked Questions (FAQ)

Q: Can DTC024EMT2L or DTC124EMT2L be used as direct replacements for RN1103MFV(TPL3)?

A: These parts are functionally equivalent only if the application circuit operates at collector currents of 30 mA or less. The RN1103MFV(TPL3) is rated for 100 mA maximum collector current, while these Rohm substitutes are rated for 30 mA maximum. If the circuit requires collector currents exceeding 30 mA, these parts are not suitable.

Q: What is the difference between DTC124EM3T5G and NSBC124EF3T5G?

A: Both parts are onsemi pre-biased NPN transistors with 100 mA collector current rating and 50 V breakdown voltage. The primary difference is the package format: DTC124EM3T5G uses SOT-723 (matching the original RN1103MFV(TPL3) footprint), while NSBC124EF3T5G uses SOT-1123 (larger package requiring PCB layout modification). Electrical performance is equivalent.

Q: Are all substitute parts RoHS compliant?

A: Yes. The original RN1103MFV(TPL3) is RoHS Compliant. All identified substitute parts are ROHS3 Compliant, indicating compliance with the current RoHS 3 directive. All parts maintain MSL 1 (Unlimited) moisture sensitivity level.

Q: Can I use NSBC124EF3T5G without modifying the PCB?

A: No. The NSBC124EF3T5G uses a SOT-1123 package, which has a different footprint than the SOT-723 package of the RN1103MFV(TPL3). PCB layout modification is required to accommodate the larger package format.

Q: What are the bias resistor values for all substitute parts?

A: All substitute parts maintain identical bias resistor configuration: Resistor - Base (R1) = 22 kOhms and Resistor - Emitter Base (R2) = 22 kOhms. This ensures equivalent biasing behavior across all substitutes.

Q: Which substitute part has the highest power dissipation rating?

A: The DTC124EM3T5G (onsemi) has a maximum power rating of 260 mW, compared to 150 mW for the original RN1103MFV(TPL3). The NSBC124EF3T5G (onsemi) is rated for 254 mW. Both Rohm parts (DTC024EMT2L and DTC124EMT2L) are rated for 150 mW, matching the original specification.

Q: Are there any differences in saturation voltage between the main part and substitutes?

A: Yes. The RN1103MFV(TPL3) has Vce Saturation (Max) of 300mV @ 500µA, 5mA. The DTC024EMT2L has 150mV @ 500µA, 5mA (lower saturation voltage). The DTC124EM3T5G and NSBC124EF3T5G both have 250mV @ 300µA, 10mA. The DTC124EMT2L has 300mV @ 500µA, 10mA. These differences reflect different test conditions and do not prevent functional substitution.