Equivalent & Substitute Parts for 2SC1740STPS

Part Overview

The 2SC1740STPS is a Bipolar Junction Transistor (BJT), NPN type, manufactured by Rohm Semiconductor. It features a 50 V collector-emitter voltage, 150 mA collector current, 180 MHz transition frequency, and comes in an SPT (SC-72 formed leads) through-hole package. This product is currently classified as obsolete, which necessitates identifying equivalent or substitute models for continued production or repair activities. Reliable substitutions require strict adherence to specified electrical and mechanical parameters to maintain circuit performance and compliance.

Substiute Parts

2SC1740STPS

Rohm SemiconductorIn Stock: 102412SC1740STPS Datasheet

Current PartRFQ

KSC945YTA

onsemiIn Stock: 49007KSC945YTA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute transistors for the 2SC1740STPS are selected based on strict adherence to the following critical parameters: transistor type (NPN), maximum collector current (150 mA), maximum collector-emitter voltage (50 V), collector cutoff current (100 nA), minimum DC current gain, maximum power dissipation, transition frequency, operating temperature, mounting type (through hole), and package compatibility. Only substitute parts from the same product category with matching or compatible electrical and environmental compliance are included.

Parameter Comparison

Engineering Selection Recommendations

The 2SC1740STPS is classified as obsolete. The KSC945YTA from onsemi is active and meets RoHS3 and REACH compliance. Both products are classified under ECCN EAR99 and share similar environmental and compliance attributes.

Frequently Asked Questions (FAQ)

Q: What are the main criteria when selecting a substitute for the 2SC1740STPS?
A: The main criteria for substitution are matching transistor type, maximum collector current, maximum collector-emitter voltage, collector cutoff current, minimum DC current gain, maximum power dissipation, transition frequency, operating temperature, mounting type, and package compatibility, as well as environmental and compliance certifications.

Q: Is the KSC945YTA a compatible replacement for the 2SC1740STPS?
A: The KSC945YTA matches key parameters such as transistor type, collector current, voltage rating, cutoff current, operating temperature, and mounting style. Confirm mechanical compatibility between SC-72 Formed Leads and TO-226-3, TO-92-3 (TO-226AA) Formed Leads as required by the application.

Q: Are there any environmental or compliance differences between these transistors?
A: Both the 2SC1740STPS and KSC945YTA are ROHS3 compliant and REACH unaffected.

Q: Do substitute parts always have the same package?
A: Substitute parts should match or be compatible in mounting type and package form. The 2SC1740STPS uses the SC-72 formed leads, while the KSC945YTA uses TO-226-3, TO-92-3 (TO-226AA) formed leads. Mechanical compatibility must be confirmed for drop-in replacement.