FJY3014R Equivalent & Substitute Parts

Part Overview

The FJY3014R 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 with reduced external component count. The device is rated for 50 V collector-emitter breakdown voltage, 100 mA maximum collector current, and 200 mW power dissipation.

The FJY3014R is classified as obsolete. Identifying equivalent 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

FJY3014R

onsemiIn Stock: 71288FJY3014R Datasheet

Current PartRFQ

DTC143ZET1G

onsemiIn Stock: 455120DTC143ZET1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FJY3014R is determined by electrical and mechanical parameter equivalence within the pre-biased NPN BJT category. The following parameters establish substitution validity:

Electrical Equivalence Criteria:

• Transistor type: NPN - Pre-Biased configuration
• Maximum collector current: 100 mA
• Collector-emitter breakdown voltage: 50 V
• Internal base resistor (R1): 4.7 kOhms
• Internal emitter-base resistor (R2): 47 kOhms
• Maximum power dissipation: 200 mW
• Moisture sensitivity level: 1 (Unlimited)
• REACH compliance status: REACH Unaffected

Mechanical Compatibility Criteria:

• Surface mount mounting type
• Package compatibility or functional equivalence in alternative surface mount packages

The DTC143ZET1G meets all electrical equivalence criteria and is classified as an active product, providing enhanced supply availability compared to the obsolete FJY3014R.

Parameter Comparison

Engineering Selection Recommendations

The DTC143ZET1G is a direct electrical substitute for the FJY3014R. Both components share identical electrical specifications for collector current, breakdown voltage, internal resistor values, and power dissipation. Both devices maintain MSL 1 (Unlimited) moisture sensitivity classification and REACH Unaffected compliance status.

The primary distinction between these components is product status and package form factor. The FJY3014R is obsolete and supplied in SC-89-3 package, while the DTC143ZET1G is an active product supplied in SC-75 package. The DTC143ZET1G offers superior supply chain availability with 455,100 pieces in stock compared to the FJY3014R's 71,200 pieces.

Package transition from SC-89 to SC-75 requires PCB layout modification. Both packages are surface mount configurations with different footprint geometries. Design teams must evaluate board-level integration requirements and conduct layout validation prior to production implementation.

The DTC143ZET1G is suitable for new designs and production transitions requiring pre-biased NPN BJT functionality within the specified electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can the DTC143ZET1G directly replace the FJY3014R without circuit modification?

A: The DTC143ZET1G provides electrical equivalence and can replace the FJY3014R functionally. However, package geometry differs between SC-89-3 and SC-75 formats, requiring PCB footprint redesign and layout validation.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is established through matching transistor type (NPN - Pre-Biased), maximum collector current (100 mA), collector-emitter breakdown voltage (50 V), internal base resistor (4.7 kOhms), internal emitter-base resistor (47 kOhms), and maximum power dissipation (200 mW).

Q: Are there compliance or regulatory differences between these components?

A: Both the FJY3014R and DTC143ZET1G maintain identical REACH Unaffected status and MSL 1 (Unlimited) moisture sensitivity classification. The DTC143ZET1G carries RoHS3 Compliant certification, providing additional regulatory alignment for current manufacturing standards.

Q: What is the primary reason for substitution?

A: The FJY3014R is classified as obsolete. The DTC143ZET1G is an active product with significantly higher inventory availability, ensuring long-term supply chain continuity for applications requiring pre-biased NPN BJT functionality.

Q: Are there performance differences in DC current gain or saturation characteristics?

A: Minor variations exist in DC current gain and saturation voltage specifications. The DTC143ZET1G exhibits DC current gain of 80 @ 5mA, 10V compared to the FJY3014R's 68 @ 5mA, 5V. Saturation voltage for the DTC143ZET1G is 250mV @ 1mA, 10mA versus 300mV @ 500µA, 10mA for the FJY3014R. These differences remain within acceptable operating margins for pre-biased BJT applications.