2SC4215-O-TP Equivalent & Substitute Parts

Part Overview

The 2SC4215-O-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for surface mount applications in the SOT-323 package. This component operates at a maximum collector voltage of 30 V with a collector current rating of 20 mA and a transition frequency of 550 MHz. The device is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The 100 mW power dissipation rating and -55°C to 150°C operating temperature range position this transistor for general-purpose switching and amplification applications in compact form factors.

Substiute Parts

2SC4215-O-TP

Micro Commercial CoIn Stock: 10532SC4215-O-TP Datasheet

Current PartRFQ

BF840,215

Nexperia USA Inc.In Stock: 10794BF840,215 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC4215-O-TP is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Transistor polarity must remain NPN
• Collector-emitter breakdown voltage (Vceo) of the substitute must equal or exceed 30 V
• Maximum collector current (Ic) must equal or exceed 20 mA
• DC current gain (hFE) must be within acceptable operating range for the application circuit
• Collector cutoff current (ICBO) must not exceed specified leakage limits
• Maximum power dissipation must support the thermal requirements of the application

Mechanical Compatibility Criteria:

• Surface mount package type must be compatible with existing PCB footprints
• Operating temperature range must encompass the application environment
• Moisture sensitivity level must meet assembly and storage requirements

Compliance Criteria:

• RoHS3 compliance status must be maintained
• Product status should preferably be Active to ensure long-term availability

The BF840,215 substitute meets these criteria with electrical ratings that exceed the 2SC4215-O-TP specifications while maintaining surface mount compatibility through package equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: BF840,215

The BF840,215 from Nexperia USA Inc. is the qualified equivalent for the obsolete 2SC4215-O-TP. Selection of this substitute is supported by the following factors:

Electrical Superiority: The BF840,215 provides higher voltage (40 V vs. 30 V), higher current (25 mA vs. 20 mA), and higher power dissipation (250 mW vs. 100 mW) ratings. These elevated specifications ensure the substitute operates within safe margins when replacing the original part in existing circuit designs. The transition frequency of 380 MHz, while lower than the 2SC4215-O-TP's 550 MHz, remains suitable for general-purpose switching applications where the original part was deployed.

Compliance and Availability: The BF840,215 maintains ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing and environmental standards. Active product status guarantees long-term availability and supply chain stability, eliminating the obsolescence risk associated with the 2SC4215-O-TP.

Automotive Qualification: The BF840,215 carries AEC-Q101 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

Package Consideration: The BF840,215 is supplied in TO-236AB (SC-59, SOT-23-3) packaging, which differs from the 2SC4215-O-TP's SOT-323 (SC-70) package. PCB footprint verification and potential layout modification are required before implementation.

Frequently Asked Questions (FAQ)

Q: Can the BF840,215 directly replace the 2SC4215-O-TP without circuit modification?

A: Electrical substitution is feasible due to superior voltage and current ratings. However, the package change from SOT-323 to TO-236AB requires PCB footprint verification. Pin configuration compatibility must be confirmed before soldering.

Q: What is the primary reason the 2SC4215-O-TP requires a substitute?

A: The 2SC4215-O-TP is classified as obsolete, meaning the manufacturer has discontinued production. The BF840,215 is an active product with equivalent electrical function and superior ratings, ensuring design continuity and supply availability.

Q: Are there any frequency limitations when using the BF840,215 as a substitute?

A: The BF840,215 operates at 380 MHz transition frequency compared to the 2SC4215-O-TP's 550 MHz. For applications operating below 380 MHz, this substitution is fully compatible. Applications requiring frequencies above 380 MHz require circuit analysis to confirm performance.

Q: Does the BF840,215 meet the same environmental and compliance standards?

A: Yes. Both components are ROHS3 compliant with MSL Level 1 rating. The BF840,215 additionally carries AEC-Q101 automotive qualification, providing enhanced reliability documentation.

Q: What is the significance of the different package types?

A: The 2SC4215-O-TP uses SOT-323 (3-pin, smaller footprint), while the BF840,215 uses TO-236AB (3-pin, larger footprint). Both are three-terminal devices with identical pin functions (Base, Collector, Emitter), but the physical dimensions differ. PCB layout must accommodate the larger TO-236AB package, or alternative footprint solutions must be evaluated.

Q: Is the DC current gain difference between the two parts significant?

A: The hFE values are comparable (70 vs. 67 minimum), with measurements taken at slightly different conditions (6V vs. 10V Vce). This minor difference does not impact substitution suitability for standard switching and amplification circuits.

Q: What inventory advantage does the BF840,215 offer?

A: The BF840,215 has 10,731 pieces in stock compared to 974 pieces for the 2SC4215-O-TP. The substitute's active status and higher inventory level provide superior supply chain reliability for production and design support.