2SC39380RL Equivalent & Substitute Parts

Part Overview

The 2SC39380RL is an NPN bipolar junction transistor manufactured by Panasonic Electronic Components, designed for small-signal switching and amplification applications. This device features a 40 V collector-emitter breakdown voltage rating, 100 mA maximum collector current, and 450 MHz transition frequency in a surface mount SMini3-G1 package. The product is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

2SC39380RL

Panasonic Electronic ComponentsIn Stock: 7442SC39380RL Datasheet

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BC848BW RFG

Taiwan Semiconductor CorporationIn Stock: 19051BC848BW RFG Datasheet

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BC848BWT106

Rohm SemiconductorIn Stock: 61753BC848BWT106 Datasheet

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BC848BWT1G

onsemiIn Stock: 24056BC848BWT1G Datasheet

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BC848CW RFG

Taiwan Semiconductor CorporationIn Stock: 18825BC848CW RFG Datasheet

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BC848CWT1G

Fairchild SemiconductorIn Stock: 15427BC848CWT1G Datasheet

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MMST3904-7-F

Diodes IncorporatedIn Stock: 65337MMST3904-7-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC39380RL is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor type: NPN configuration required
• Collector-emitter breakdown voltage: Minimum 40 V (equal or greater)
• Maximum collector current: Minimum 100 mA (equal or greater)
• Maximum power dissipation: Minimum 150 mW (equal or greater)
• Package compatibility: SC-70 or SOT-323 surface mount packages
• Mounting type: Surface mount technology
• Operating temperature range: Maximum junction temperature of 150°C or higher

Secondary Compatibility Factors:

• Transition frequency: 450 MHz or higher preferred for frequency-dependent applications
• DC current gain (hFE): Minimum 90 at specified test conditions
• Vce saturation characteristics: Lower saturation voltage preferred for switching applications
• Moisture sensitivity: MSL 1 classification

The substitute parts listed below meet or exceed the primary substitution criteria. Parts with reduced voltage ratings (30 V) are included where collector current and power ratings are maintained or exceeded, as these parameters define the safe operating area for the device.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Voltage-Matched):

The MMST3904-7-F from Diodes Incorporated is the only substitute that maintains the 40 V collector-emitter breakdown voltage specification of the 2SC39380RL. This part exceeds the original specification in collector current (200 mA vs. 100 mA), power dissipation (200 mW vs. 150 mW), and transition frequency (300 MHz vs. 450 MHz). The MMST3904-7-F is active in production status with ROHS3 compliance and REACH unaffected certification. This part is suitable for direct replacement in applications where the 40 V voltage rating is a design requirement.

Reduced Voltage Substitutes (30 V Rating):

The BC848 series parts (BC848BW RFG, BC848BWT106, BC848BWT1G, BC848CW RFG, BC848CWT1G) all feature 30 V collector-emitter breakdown voltage ratings. These parts are suitable for applications where the operating voltage does not exceed 30 V. All BC848 variants maintain 100 mA collector current capability and meet or exceed the 150 mW power rating. These parts are active in production status with ROHS3 compliance and REACH unaffected certification.

Selection by Application Requirements:

For high-frequency applications requiring transition frequency above 300 MHz, the MMST3904-7-F (300 MHz) or BC848BWT106 (200 MHz) are preferred over other BC848 variants (100 MHz). For applications requiring lower saturation voltage in switching circuits, the MMST3904-7-F (300 mV @ 5 mA, 50 mA) provides superior performance compared to BC848 series parts (600 mV @ 5 mA, 100 mA). For applications requiring higher DC current gain, BC848CW RFG and BC848CWT1G (420 hFE minimum) exceed the original specification (90 hFE minimum).

Packaging and Availability:

All substitute parts are available in SC-70 or SOT-323 surface mount packages compatible with the original 2SC39380RL footprint. Inventory availability is substantial across all substitute options, with MMST3904-7-F showing the highest stock level (65,300 pieces).

Frequently Asked Questions (FAQ)

Q: Can I use a BC848 series part as a direct replacement for the 2SC39380RL?

A: BC848 series parts are functionally compatible substitutes for most applications. However, the BC848 series has a 30 V collector-emitter breakdown voltage rating compared to the 2SC39380RL's 40 V rating. If your circuit operates at voltages below 30 V, BC848 parts are suitable. If your circuit requires 40 V operation, use the MMST3904-7-F instead.

Q: What is the difference between BC848BW RFG and BC848CW RFG?

A: Both parts are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications except for DC current gain. The BC848BW RFG has a minimum hFE of 200, while the BC848CW RFG has a minimum hFE of 420. Both are suitable substitutes for the 2SC39380RL in applications where the 30 V voltage rating is acceptable.

Q: Why does the MMST3904-7-F have a higher collector current rating (200 mA) than the original part (100 mA)?

A: The MMST3904-7-F is designed with higher current capability, but this does not prevent its use in circuits designed for 100 mA operation. The higher rating provides additional design margin and allows the part to be used in applications requiring up to 200 mA. The part will operate safely at 100 mA or lower.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant and REACH unaffected, except BC848CWT1G for which RoHS status is not specified in the provided data. Verify RoHS compliance with the manufacturer if this certification is required for your application.

Q: Can I use these substitutes in high-frequency applications above 450 MHz?

A: The original 2SC39380RL has a 450 MHz transition frequency. The MMST3904-7-F (300 MHz) and BC848BWT106 (200 MHz) have lower transition frequencies. The BC848 series parts with 100 MHz transition frequency are not suitable for applications requiring operation above 100 MHz. For applications requiring frequencies above 300 MHz, the original 2SC39380RL specification cannot be fully matched by the available substitutes.

Q: What is the difference between the various BC848 package designations (SOT-323, UMT3, SC-70-3)?

A: All these designations refer to the same physical package form factor (SC-70 or SOT-323). The different supplier device package names reflect manufacturer-specific naming conventions. All are mechanically and electrically compatible with the original 2SC39380RL footprint.

Q: Is the BC848BWT1G from onsemi a better choice than the BC848BW RFG from Taiwan Semiconductor?

A: Both parts meet the substitution criteria. The BC848BWT1G has a lower collector cutoff current (15 nA vs. 100 nA) and identical power rating (150 mW vs. 200 mW for BC848BW RFG). The BC848BWT1G is suitable for applications where lower leakage current is beneficial. Both are active products with equivalent availability and compliance certifications.

Q: Can I substitute the 2SC39380RL with MMST3904-7-F in a circuit designed for 100 mA operation?

A: Yes. The MMST3904-7-F is rated for 200 mA maximum collector current, so it will operate safely at 100 mA. The part maintains the same 40 V voltage rating and provides improved performance in transition frequency (300 MHz vs. 450 MHz) and saturation voltage characteristics. This is a suitable direct substitute for applications requiring the 40 V voltage specification.