RN1104MFV,L3F Pre-Biased NPN Transistor Equivalent & Substitute Parts

Part Overview

The RN1104MFV,L3F is a pre-biased NPN bipolar junction transistor (BJT) 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 device is housed in a SOT-723 package and is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain constraints occur, or when design flexibility is required across multiple qualified component sources. The substitute parts listed maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

RN1104MFV,L3F

Toshiba Semiconductor and StorageIn Stock: 48343RN1104MFV,L3F Datasheet

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DTC144EM3T5G

onsemiIn Stock: 3009DTC144EM3T5G Datasheet

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DTC144TM3T5G

onsemiIn Stock: 5020DTC144TM3T5G Datasheet

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NSBC144EF3T5G

onsemiIn Stock: 8969NSBC144EF3T5G Datasheet

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NSVDTC144EM3T5G

onsemiIn Stock: 8821NSVDTC144EM3T5G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN1104MFV,L3F is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Transistor Type: NPN - Pre-Biased
• Voltage - Collector Emitter Breakdown (Max): 50 V
• Current - Collector (Ic) (Max): 100 mA
• Resistor - Base (R1): 47 kOhms
• Resistor - Emitter Base (R2): 47 kOhms
• Current - Collector Cutoff (Max): 500 nA
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

• DC Current Gain (hFE) (Min): Minimum 80 at specified test conditions
• Vce Saturation (Max): Up to 300 mV at specified test conditions
• Power - Max: 150 mW or greater
• Package / Case: SOT-723 or SOT-1123 (both surface mount packages compatible with RN1104MFV,L3F footprint requirements)

All substitute parts listed maintain these critical electrical and mechanical parameters within acceptable engineering tolerances for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

DTC144EM3T5G (onsemi): This part is electrically equivalent to the RN1104MFV,L3F with identical core parameters. The device is Active status with ROHS3 compliance. The higher power rating (260 mW versus 150 mW) provides additional thermal margin. SOT-723 package maintains footprint compatibility. This part is suitable for direct substitution in standard applications.

DTC144TM3T5G (onsemi): This variant offers a higher DC current gain (120 minimum versus 80 minimum) and improved saturation characteristics. Active product status and ROHS3 compliance are maintained. The SOT-723 package is identical to the primary part. This part is suitable for applications where enhanced current gain is beneficial or where tighter saturation specifications are required.

NSBC144EF3T5G (onsemi): This part carries Last Time Buy product status, indicating discontinued or end-of-life status. While electrically compatible with matching parameters, the SOT-1123 package differs from the SOT-723 package of the primary part. Package footprint differences require PCB layout verification before selection. This part is not recommended for new designs due to product status.

NSVDTC144EM3T5G (onsemi): This part is qualified to AEC-Q101 automotive standard and carries Automotive grade designation. Electrical parameters match the RN1104MFV,L3F with identical core specifications. Active product status and ROHS3 compliance are maintained. The SOT-723 package is identical to the primary part. This part is suitable for automotive applications or where automotive-grade qualification is required.

Frequently Asked Questions (FAQ)

Q: Can DTC144EM3T5G replace RN1104MFV,L3F in existing designs without PCB modification?

A: Yes. Both parts use the SOT-723 package with identical pinout and footprint. Electrical parameters are equivalent within specified tolerances. No PCB layout changes are required.

Q: What is the difference between DTC144EM3T5G and DTC144TM3T5G?

A: Both parts are SOT-723 surface mount pre-biased NPN transistors with 50 V breakdown voltage and 100 mA maximum collector current. DTC144TM3T5G has a higher minimum DC current gain (120 versus 80) and lower saturation voltage at specified test conditions. Selection depends on circuit requirements for current gain and saturation characteristics.

Q: Why is NSBC144EF3T5G marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued this part number. Existing inventory may be available, but future availability is not guaranteed. This part should not be selected for new designs unless existing stock is committed to the project.

Q: Can NSBC144EF3T5G be used as a substitute despite the different package (SOT-1123)?

A: NSBC144EF3T5G uses SOT-1123 package while RN1104MFV,L3F uses SOT-723 package. Although electrical parameters are compatible, the different package requires PCB footprint verification and potential layout redesign. Package compatibility must be confirmed before selection.

Q: What is the advantage of NSVDTC144EM3T5G over other substitutes?

A: NSVDTC144EM3T5G is qualified to AEC-Q101 automotive standard. This qualification is required for automotive applications. For non-automotive applications, other substitutes with Active product status may be preferred due to better long-term availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental compliance of the primary part RN1104MFV,L3F.

Q: What is the moisture sensitivity level for all parts?

A: All parts, including the primary part and all substitutes, have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without moisture control requirements.

Q: Can substitute parts be mixed in the same production batch?

A: All substitute parts meet the same electrical and mechanical specifications as the primary part. However, design documentation and bill of materials should specify the approved part number(s) for traceability and supply chain management purposes.