2SC5414AF-AA Equivalent & Substitute Parts

Part Overview

The 2SC5414AF-AA is an NPN bipolar junction transistor (BJT) manufactured by onsemi, designed for general-purpose switching and amplification applications at 12V with a maximum collector current of 0.1A. The device features a through-hole 3-NP package configuration (TO-226-3/TO-92-3). This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

2SC5414AF-AA

onsemiIn Stock: 7122SC5414AF-AA Datasheet

Current PartRFQ

2SC5415AF-TD-E

onsemiIn Stock: 124472SC5415AF-TD-E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC5414AF-AA is determined by the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Transistor type: NPN polarity
• Voltage rating: Minimum 12V collector-emitter breakdown voltage
• Current capability: Minimum 0.1A collector current rating
• Frequency performance: Suitable for the intended application frequency range
• Compliance: REACH and RoHS status alignment

Secondary Compatibility Factors:

• Mounting type compatibility (through-hole or surface-mount with appropriate adapter consideration)
• Package footprint and pin configuration
• Thermal characteristics and maximum junction temperature
• Moisture sensitivity classification

The identified substitute part 2SC5415AF-TD-E meets the electrical requirements for NPN operation at 12V with a maximum collector current of 100mA (exceeding the 0.1A requirement). However, this substitute operates as an RF transistor with a transition frequency of 6.7GHz and is packaged in surface-mount configuration (TO-243AA/PCP), representing a functional upgrade with different mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

Electrical Compatibility: The 2SC5415AF-TD-E satisfies the core electrical requirements of the 2SC5414AF-AA, providing NPN operation at 12V with collector current capability of 100mA, which exceeds the 0.1A specification. Both devices share identical REACH compliance status and unlimited moisture sensitivity classification, ensuring regulatory alignment.

Mechanical and Packaging Considerations: The primary distinction between these devices is the mounting technology. The 2SC5414AF-AA utilizes through-hole packaging (TO-226-3/TO-92-3), while the 2SC5415AF-TD-E employs surface-mount technology (TO-243AA/PCP). Direct board-level substitution without adapter circuitry is not feasible due to incompatible footprints. PCB redesign or the use of through-hole-to-surface-mount adapter modules is required for mechanical integration.

Performance Characteristics: The 2SC5415AF-TD-E is specified as an RF transistor with a transition frequency of 6.7GHz, representing enhanced high-frequency performance compared to the general-purpose 2SC5414AF-AA. This characteristic makes the substitute suitable for applications requiring RF amplification or switching at microwave frequencies, though it may introduce unnecessary complexity in low-frequency switching applications.

Compliance and Availability: Both parts are classified as obsolete. The 2SC5415AF-TD-E demonstrates RoHS3 compliance, providing enhanced environmental regulatory alignment for new designs. Current inventory availability of the substitute (12,400 units) exceeds that of the main part (677 units), supporting long-term procurement strategy.

Frequently Asked Questions (FAQ)

Q: Can the 2SC5415AF-TD-E be used as a direct replacement for the 2SC5414AF-AA without PCB modification?

A: No. The 2SC5414AF-AA is packaged in through-hole configuration (TO-226-3/TO-92-3), while the 2SC5415AF-TD-E uses surface-mount packaging (TO-243AA/PCP). Direct substitution requires PCB redesign or implementation of an adapter module to accommodate the different mechanical interfaces.

Q: What are the key electrical parameters that make the 2SC5415AF-TD-E a valid substitute?

A: Both devices are NPN transistors rated for 12V operation with collector current capabilities meeting or exceeding 0.1A. The 2SC5415AF-TD-E provides 100mA maximum collector current, satisfying the electrical requirements of the original part. Both maintain identical REACH compliance and unlimited moisture sensitivity classification.

Q: Is the 2SC5415AF-TD-E suitable for low-frequency switching applications?

A: The 2SC5415AF-TD-E is specified as an RF transistor with 6.7GHz transition frequency and includes RF-specific parameters such as noise figure and gain. While electrically capable of low-frequency operation, this device is optimized for high-frequency applications. For low-frequency switching, alternative general-purpose NPN transistors may provide better performance-to-cost alignment.

Q: What compliance advantages does the 2SC5415AF-TD-E offer?

A: The 2SC5415AF-TD-E is RoHS3 compliant, whereas the 2SC5414AF-AA compliance status is not specified. Both devices maintain REACH Unaffected status and unlimited moisture sensitivity classification. RoHS3 compliance supports environmental regulatory requirements in new product designs.

Q: Are there thermal differences between these devices?

A: The 2SC5415AF-TD-E specifies a maximum junction temperature of 150°C and maximum power dissipation of 800mW. The 2SC5414AF-AA does not provide thermal specifications in the available data. The substitute's higher power rating and specified thermal limits support applications with elevated thermal demands.

Q: What is the impact of the different package types on circuit design?

A: Through-hole packages (TO-226-3/TO-92-3) mount vertically through PCB holes, suitable for through-hole assembly processes. Surface-mount packages (TO-243AA/PCP) mount directly to PCB surfaces, requiring surface-mount assembly equipment. Selection depends on manufacturing capability and PCB design constraints.