2SC3074-Y(Q) Equivalent & Substitute Parts

Part Overview

The 2SC3074-Y(Q) is an NPN bipolar junction transistor manufactured by Toshiba Semiconductor and Storage, rated for 50 V collector-emitter breakdown voltage and 5 A maximum collector current. This surface mount device in PW-MOLD packaging delivers 1 W maximum power dissipation with a transition frequency of 120 MHz. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

2SC3074-Y(Q)

Toshiba Semiconductor and StorageIn Stock: 11602SC3074-Y(Q) Datasheet

Current PartRFQ

2SC5886A(T6L1,NQ)

Toshiba Semiconductor and StorageIn Stock: 11802SC5886A(T6L1,NQ) Datasheet

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2SC5706-TL-E

onsemiIn Stock: 38742SC5706-TL-E Datasheet

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2SC6017-E

onsemiIn Stock: 20962SC6017-E Datasheet

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2SD1801S-E

onsemiIn Stock: 151962SD1801S-E Datasheet

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2SD1801T-E

onsemiIn Stock: 10162SD1801T-E Datasheet

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2SD1802S-E

onsemiIn Stock: 149552SD1802S-E Datasheet

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2SD1802T-E

Fairchild SemiconductorIn Stock: 53372SD1802T-E Datasheet

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2SD1803T-TL-H

onsemiIn Stock: 14012SD1803T-TL-H Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC3074-Y(Q) is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Transistor type must be NPN
• Voltage - Collector Emitter Breakdown (Max) must be 50 V or greater
• Current - Collector (Ic) (Max) must be 5 A or greater
• Power - Max must be 1 W or greater
• Operating Temperature (TJ) must be 150°C or greater

Mechanical Compatibility Criteria:

• Mounting type must be Surface Mount
• Package / Case must be compatible with TO-251-3 Short Leads, IPak, or TO-251AA footprints

Substitute parts are grouped into two categories: direct electrical equivalents with identical or superior ratings, and functional alternatives that meet the minimum electrical requirements while potentially offering enhanced performance characteristics such as higher transition frequency or improved saturation voltage characteristics.

Parameter Comparison

Engineering Selection Recommendations

For Direct Surface Mount Replacement (Identical Mounting Type):

The 2SC5886A(T6L1,NQ) from Toshiba is an active product that meets all electrical requirements with 5 A collector current, 50 V breakdown voltage, and 1 W power rating. This part maintains the same manufacturer lineage as the original 2SC3074-Y(Q). Package footprint differs (TO-252-3 DPAK versus TO-251-3 IPak), requiring PCB layout verification.

The 2SD1803T-TL-H from onsemi is an active surface mount alternative with identical electrical specifications (5 A, 50 V, 1 W) and enhanced transition frequency of 180 MHz. RoHS3 compliance and REACH unaffected status provide regulatory alignment. Package footprint is TO-252-3 DPAK, requiring PCB layout verification.

The 2SC5706-TL-E from onsemi is an active surface mount option with 5 A collector current and 50 V breakdown voltage. Power rating is 0.8 W (below the 1 W specification) and transition frequency is 400 MHz. This part is suitable only for applications where the reduced power rating does not constrain thermal performance.

For Through Hole Replacement (Different Mounting Type):

The 2SD1802T-E from Fairchild Semiconductor is an active product with identical electrical specifications (5 A, 50 V, 1 W, 150 MHz) and matching TO-251-3 package footprint. This part requires PCB redesign to accommodate through-hole mounting.

Obsolete Parts (Not Recommended for New Designs):

The 2SC6017-E, 2SD1801S-E, 2SD1801T-E, and 2SD1802S-E are classified as obsolete. These parts do not meet the substitution criteria due to reduced collector current ratings (2 A to 3 A maximum) or mounting type incompatibility.

Frequently Asked Questions (FAQ)

Q: Can the 2SC5886A(T6L1,NQ) be used as a direct replacement for the 2SC3074-Y(Q)?

A: The 2SC5886A(T6L1,NQ) meets all electrical requirements (5 A, 50 V, 1 W). However, the package footprint differs: TO-252-3 DPAK versus TO-251-3 IPak. PCB layout modification is required. The part is manufactured by Toshiba and carries active product status.

Q: What is the difference between surface mount and through-hole mounting options?

A: The 2SC3074-Y(Q) is a surface mount device. Surface mount substitutes (2SC5886A, 2SD1803T-TL-H, 2SC5706-TL-E) mount directly to PCB pads without drilling. Through-hole alternatives (2SD1802T-E) require component leads to pass through PCB holes and are soldered on the opposite side. Through-hole replacement requires PCB redesign.

Q: Why is the 2SC5706-TL-E listed as a substitute if its power rating is 0.8 W instead of 1 W?

A: The 2SC5706-TL-E meets the minimum electrical criteria for collector current (5 A) and breakdown voltage (50 V). The 0.8 W power rating is lower than the 1 W specification. This part is suitable only for applications where thermal dissipation does not approach the 1 W limit. Verify power dissipation requirements in your specific circuit before selection.

Q: What does "active" product status mean compared to "obsolete"?

A: Active products are currently manufactured and available from the supplier. Obsolete products are no longer manufactured and availability is limited to existing inventory. For new designs and long-term production, active products are preferred.

Q: Are there RoHS compliance differences between substitute parts?

A: The 2SC5886A(T6L1,NQ), 2SC5706-TL-E, and 2SD1803T-TL-H carry RoHS3 compliance certification. The 2SD1802T-E does not list RoHS status in the provided data. Verify RoHS compliance requirements for your application before final part selection.

Q: Can I use the 2SD1802T-E as a surface mount replacement?

A: No. The 2SD1802T-E is a through-hole device. Surface mount and through-hole components require different PCB designs and assembly processes. Use surface mount alternatives such as 2SC5886A(T6L1,NQ) or 2SD1803T-TL-H for surface mount applications.

Q: What is the significance of transition frequency differences among substitute parts?

A: Transition frequency (fT) indicates the maximum frequency at which the transistor maintains useful gain. The 2SC3074-Y(Q) has 120 MHz fT. Substitutes range from unspecified (2SC5886A) to 400 MHz (2SC5706-TL-E). Higher transition frequency provides performance margin for high-frequency applications. Lower or unspecified values require circuit verification to ensure adequate gain at operating frequency.