2SC5343-Y-AP Equivalent & Substitute Parts

Part Overview

The 2SC5343-Y-AP is a Bipolar (BJT) NPN transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This device features a 50 V collector-emitter breakdown voltage, 150 mA maximum collector current, and 625 mW power dissipation capability in a Through Hole TO-92 package.

The 2SC5343-Y-AP is classified as Obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where this component is specified in existing designs.

Substiute Parts

2SC5343-Y-AP

Micro Commercial CoIn Stock: 11752SC5343-Y-AP Datasheet

Current PartRFQ

KSC945CYTA

onsemiIn Stock: 10500KSC945CYTA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC5343-Y-AP is determined by equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Transistor Type: NPN configuration
• Current - Collector (Ic) (Max): 150 mA
• Voltage - Collector Emitter Breakdown (Max): 50 V
• Operating Temperature (TJ): 150 °C
• DC Current Gain (hFE) (Min): 120 or greater

Mechanical Equivalence Criteria:

• Mounting Type: Through Hole
• Package / Case: TO-92-3 (TO-226AA Formed Leads)

Compliance Criteria:

• RoHS Status: ROHS3 Compliant

The KSC945CYTA meets all electrical and mechanical substitution criteria. While the KSC945CYTA exhibits different power dissipation (250 mW versus 625 mW) and transition frequency (300 MHz versus 80 MHz), these parameters represent performance enhancements that do not preclude functional substitution in applications designed for the 2SC5343-Y-AP.

Parameter Comparison

Engineering Selection Recommendations

KSC945CYTA as Primary Substitute:

The KSC945CYTA is an active production component manufactured by onsemi and qualifies as a direct functional substitute for the obsolete 2SC5343-Y-AP. Both devices share identical electrical ratings for collector current (150 mA), collector-emitter breakdown voltage (50 V), and operating temperature (150 °C). Both are ROHS3 compliant and packaged in TO-92-3 through-hole configuration.

The KSC945CYTA demonstrates superior performance characteristics in transition frequency (300 MHz versus 80 MHz) and lower maximum power dissipation (250 mW versus 625 mW). These differences indicate enhanced switching speed capability and reduced thermal generation, which are compatible with applications originally specified for the 2SC5343-Y-AP.

The active product status of the KSC945CYTA ensures long-term availability and supply chain continuity, addressing the obsolescence constraint of the original component.

Frequently Asked Questions (FAQ)

Q: Can the KSC945CYTA directly replace the 2SC5343-Y-AP in existing circuit designs?

A: Yes. Both devices are NPN transistors with identical maximum collector current (150 mA), collector-emitter breakdown voltage (50 V), and operating temperature rating (150 °C). Both are packaged in TO-92-3 through-hole configuration with identical lead geometry. Electrical compatibility is established across these critical parameters.

Q: What are the differences between these two transistors?

A: The KSC945CYTA exhibits higher transition frequency (300 MHz versus 80 MHz) and lower maximum power dissipation (250 mW versus 625 mW). The KSC945CYTA also demonstrates a slightly higher Vce saturation voltage (300 mV versus 250 mV at specified test conditions). These differences represent performance enhancements that do not prevent functional substitution.

Q: Why is the 2SC5343-Y-AP classified as Obsolete?

A: The 2SC5343-Y-AP is no longer in active production by Micro Commercial Co. The KSC945CYTA is an active production alternative that fulfills the same electrical and mechanical requirements.

Q: Are both devices RoHS compliant?

A: Yes. Both the 2SC5343-Y-AP and KSC945CYTA are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: Does the TO-92-3 package ensure mechanical compatibility?

A: Yes. Both devices utilize the TO-92-3 (TO-226AA) package with formed leads, ensuring identical mechanical fit and pin configuration for through-hole mounting applications.

Q: What is the significance of the higher transition frequency in the KSC945CYTA?

A: The KSC945CYTA transition frequency of 300 MHz indicates faster switching capability compared to the 2SC5343-Y-AP at 80 MHz. This parameter does not limit substitution; it indicates the KSC945CYTA can operate at higher switching speeds if required by the application.