RN1307,LF Pre-Biased NPN Transistor Equivalent & Substitute Parts

Part Overview

The RN1307,LF 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 is designed for general-purpose switching and amplification applications. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters are required due to component availability, supply chain considerations, or design flexibility within the same functional category.

Substiute Parts

RN1307,LF

Toshiba Semiconductor and StorageIn Stock: 3120RN1307,LF Datasheet

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ADTC114EUAQ-7

Diodes IncorporatedIn Stock: 4143ADTC114EUAQ-7 Datasheet

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DDTC114YUA-7-F

Diodes IncorporatedIn Stock: 125331DDTC114YUA-7-F Datasheet

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DTC114YUA-TP

Micro Commercial CoIn Stock: 2140DTC114YUA-TP Datasheet

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MUN5214T1G

onsemiIn Stock: 6584MUN5214T1G Datasheet

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PDTC114YU,115

NXP USA Inc.In Stock: 18062PDTC114YU,115 Datasheet

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PDTC114YUF

Nexperia USA Inc.In Stock: 9501PDTC114YUF Datasheet

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SMUN5214T1G

onsemiIn Stock: 5047SMUN5214T1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RN1307,LF are qualified based on the following critical parameters that must match or exceed the main part specifications:

Mandatory Matching Parameters:

• Transistor Type: NPN - Pre-Biased
• Current - Collector (Ic) (Max): 100 mA minimum
• Voltage - Collector Emitter Breakdown (Max): 50 V minimum
• Resistor - Base (R1): 10 kOhms
• Resistor - Emitter Base (R2): 47 kOhms
• Package / Case: SC-70 or SOT-323 surface mount
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

• Frequency - Transition: 202 MHz to 250 MHz
• Power - Max: 100 mW to 330 mW
• DC Current Gain (hFE): 30 to 100 at specified test conditions
• Vce Saturation: 100 mV to 300 mV at specified test conditions
• Current - Collector Cutoff: 500 nA to 1 µA

All substitute parts listed maintain functional equivalence within the pre-biased NPN transistor category and are compatible with applications designed for the RN1307,LF.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Resistor Configuration):

The following parts maintain the exact resistor network configuration (R1 = 10 kOhms, R2 = 47 kOhms) as the RN1307,LF and are suitable for direct substitution in applications where the original part specifications are required:

• DDTC114YUA-7-F (Diodes Incorporated): Identical electrical parameters with increased power dissipation capability (200 mW vs. 100 mW). Available in Cut Tape & Digi-Reel packaging with 125,300 units in stock.
• DTC114YUA-TP (Micro Commercial Co): Matches all critical parameters with 200 mW power rating. Available in Tape & Reel packaging with 2,111 units in stock.
• MUN5214T1G (onsemi): Maintains identical resistor configuration with 202 mW power rating and 250 MHz transition frequency. Available in Cut Tape & Digi-Reel packaging with 6,550 units in stock.
• PDTC114YU,115 (NXP USA Inc.): Provides equivalent performance with 230 MHz transition frequency and 200 mW power rating. Available in Bulk packaging with 17,969 units in stock.
• SMUN5214T1G (onsemi): Functionally equivalent to MUN5214T1G with identical specifications. Available in Cut Tape & Digi-Reel packaging with 4,983 units in stock.

Alternative Configuration (Modified Resistor Network):

• ADTC114EUAQ-7 (Diodes Incorporated): Features modified emitter-base resistor (R2 = 10 kOhms vs. 47 kOhms) and increased power dissipation (330 mW). This part is AEC-Q101 qualified for automotive applications. Use only when the modified resistor network is acceptable for the application. Available in Tape & Reel packaging with 4,065 units in stock.

Automotive-Qualified Options:

• PDTC114YUF (Nexperia USA Inc.): AEC-Q101 qualified for automotive applications with identical resistor configuration. Available in Tape & Reel packaging with 9,472 units in stock.

All listed substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can ADTC114EUAQ-7 be used as a direct replacement for RN1307,LF?

A: ADTC114EUAQ-7 is electrically compatible but features a different emitter-base resistor value (10 kOhms vs. 47 kOhms). This modification alters the biasing network and may affect circuit behavior. Use only if the modified resistor configuration is verified as acceptable for your application.

Q: What is the difference between the onsemi MUN5214T1G and SMUN5214T1G?

A: Both parts are functionally identical with matching electrical parameters, resistor configuration, and power ratings. The primary difference is packaging designation. Both are available in Cut Tape & Digi-Reel format and are suitable for direct substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity level, consistent with the RN1307,LF specifications.

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

A: ADTC114EUAQ-7 offers the highest power dissipation at 330 mW, compared to 100 mW for the RN1307,LF. However, this part features a modified resistor network and should be selected only when increased power handling is required and the resistor configuration change is acceptable.

Q: Can I use PDTC114YUF in automotive applications?

A: Yes. PDTC114YUF is AEC-Q101 qualified for automotive applications and maintains the identical resistor configuration as the RN1307,LF. It is suitable for automotive-grade designs requiring pre-biased NPN transistor functionality.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Both are surface mount packaging formats suitable for automated assembly. Tape & Reel (TR) is standard reel packaging. Cut Tape & Digi-Reel (CT) provides flexibility for smaller quantity requirements while maintaining compatibility with standard pick-and-place equipment. Selection depends on production volume and inventory management requirements.

Q: Are there any frequency differences between substitute parts?

A: Transition frequency varies slightly among substitutes: RN1307,LF operates at 250 MHz, while MUN5214T1G and SMUN5214T1G operate at 202 MHz, and PDTC114YU,115 and PDTC114YUF operate at 230 MHz. These variations remain within acceptable ranges for general-purpose switching applications but should be verified for high-frequency circuit designs.

Q: Which substitute part has the largest inventory availability?

A: DDTC114YUA-7-F (Diodes Incorporated) has the largest inventory with 125,300 units in stock, followed by PDTC114YU,115 (NXP USA Inc.) with 17,969 units.