FJY3013R Equivalent & Substitute Parts

Part Overview

The FJY3013R is a pre-biased NPN bipolar junction transistor (BJT) manufactured by onsemi, designed for surface mount applications in the SC-89-3 package. This component integrates internal base and emitter-base resistors, enabling simplified circuit design for switching and amplification applications. The device is rated for 50 V collector-emitter breakdown voltage, 100 mA maximum collector current, and 200 mW power dissipation with a transition frequency of 250 MHz.

The FJY3013R is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

FJY3013R

onsemiIn Stock: 62150FJY3013R Datasheet

Current PartRFQ

DTC123JET1G

onsemiIn Stock: 260483DTC123JET1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FJY3013R is determined by electrical and mechanical parameter compatibility within the pre-biased NPN BJT category. The following parameters establish substitution eligibility:

Critical Electrical Parameters:

• Transistor type: NPN - Pre-Biased configuration
• Maximum collector current: 100 mA minimum
• Collector-emitter breakdown voltage: 50 V minimum
• Internal base resistor (R1): 2.2 kOhms
• Internal emitter-base resistor (R2): 47 kOhms
• Maximum power dissipation: 200 mW minimum

Mechanical Parameters:

• Mounting type: Surface Mount
• Moisture sensitivity level: MSL 1 or equivalent

The DTC123JET1G meets all critical electrical parameters and maintains surface mount compatibility. While package geometry differs (SC-75 versus SC-89-3), both are surface mount configurations suitable for automated assembly. The substitute part maintains identical internal resistor values and current/voltage ratings, ensuring functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The DTC123JET1G is the qualified substitute for the FJY3013R based on the following engineering criteria:

Electrical Compatibility: Both devices share identical maximum ratings for collector current (100 mA), collector-emitter breakdown voltage (50 V), and power dissipation (200 mW). Internal resistor networks are identical (R1 = 2.2 kOhms, R2 = 47 kOhms), ensuring equivalent biasing characteristics and circuit behavior.

Product Status and Supply: The FJY3013R is obsolete with limited inventory availability. The DTC123JET1G is active in production with significantly higher inventory levels (260,400 pieces in stock versus 62,100 pieces), providing reliable long-term supply continuity.

Compliance and Certifications: Both parts maintain MSL 1 (Unlimited) moisture sensitivity classification and REACH Unaffected status. The DTC123JET1G carries RoHS3 Compliance certification, meeting current environmental and regulatory requirements.

Package Consideration: The DTC123JET1G uses SC-75 (SOT-416) packaging versus the FJY3013R SC-89-3 package. Both are surface mount configurations; however, PCB footprint redesign is required for physical compatibility. This substitution is suitable for new designs or redesign cycles where footprint modification is feasible.

Frequently Asked Questions (FAQ)

Q: Can the DTC123JET1G directly replace the FJY3013R without circuit modifications?

A: The DTC123JET1G provides electrical equivalence in terms of current ratings, voltage ratings, power dissipation, and internal resistor values. However, the package change from SC-89-3 to SC-75 requires PCB footprint modification. Circuit operation remains functionally identical once the physical placement is accommodated.

Q: What are the key differences between FJY3013R and DTC123JET1G?

A: The primary differences are product status (obsolete versus active), package geometry (SC-89-3 versus SC-75), and DC current gain specifications. The DTC123JET1G specifies hFE of 80 @ 5mA, 10V compared to the FJY3013R at 56 @ 5mA, 5V. Both devices maintain identical maximum electrical ratings and internal resistor configurations.

Q: Are there any compliance or regulatory differences between these parts?

A: The DTC123JET1G carries RoHS3 Compliance certification, while the FJY3013R does not specify this status. Both parts are REACH Unaffected and carry MSL 1 classification. For applications requiring RoHS3 compliance, the DTC123JET1G is the appropriate selection.

Q: What is the impact of the package change on assembly and testing?

A: The SC-75 package used by the DTC123JET1G is a standard surface mount configuration compatible with automated pick-and-place equipment. PCB design changes are required to accommodate the different footprint dimensions. Electrical testing parameters remain unchanged, as internal device characteristics are equivalent.

Q: Is the DTC123JET1G suitable for high-frequency applications?

A: Both the FJY3013R and DTC123JET1G are rated for 250 MHz transition frequency and 200 MHz respectively, supporting high-frequency switching and amplification applications within their specified operating ranges.