2SC51210P Equivalent & Substitute Parts

Part Overview

The 2SC51210P is an NPN bipolar junction transistor manufactured by Panasonic Electronic Components, designed for general-purpose switching and amplification applications. This device features a 400 V collector-emitter breakdown voltage rating with a maximum collector current of 70 mA and 1.2 W power dissipation capability in a through-hole TO-126B-A1 package.

The 2SC51210P is classified as an obsolete product. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and production requirements for legacy equipment and systems utilizing this transistor. Identifying compatible alternatives ensures circuit functionality while accommodating current component availability and supply chain constraints.

Substiute Parts

2SC51210P

Panasonic Electronic ComponentsIn Stock: 7882SC51210P Datasheet

Current PartRFQ

KSC2752OSTU

onsemiIn Stock: 25185KSC2752OSTU Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC51210P is determined by strict equivalence across the following critical electrical and mechanical parameters:

Mandatory Matching Criteria:

• Transistor Type: NPN configuration
• Voltage - Collector Emitter Breakdown (Max): 400 V minimum
• Mounting Type: Through Hole
• Package / Case: TO-126-3 or compatible TO-225AA footprint
• Operating Temperature: 150°C (TJ) or higher

Allowable Parameter Variations: Substitute parts may exceed the following specifications without compromising circuit compatibility:

• Current - Collector (Ic) (Max): Substitute may exceed 70 mA
• Power - Max: Substitute may exceed 1.2 W
• DC Current Gain (hFE): Substitute may exceed minimum 30 @ specified conditions
• Frequency - Transition: Substitute may exceed 80 MHz

The KSC2752OSTU meets all mandatory matching criteria and is therefore a valid substitute for the 2SC51210P in applications where the original part is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The KSC2752OSTU is a direct substitute for the 2SC51210P based on electrical and mechanical parameter equivalence. The following factors support this substitution:

Product Status: The 2SC51210P is classified as obsolete, while the KSC2752OSTU maintains active product status with confirmed inventory availability (25,100 pcs in stock). This ensures reliable sourcing for replacement and new production requirements.

Compliance & Certifications: The KSC2752OSTU is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. The 2SC51210P is RoHS non-compliant, reflecting its legacy status.

Electrical Equivalence: Both devices share identical voltage ratings (400 V breakdown), matching DC current gain specifications (30 minimum), and equivalent collector cutoff current (10 µA). The KSC2752OSTU provides higher current handling capability (500 mA vs. 70 mA), which does not compromise circuit operation in applications designed for the original 70 mA specification.

Package Compatibility: Both parts utilize the TO-126-3 through-hole package, ensuring direct mechanical and electrical compatibility with existing PCB layouts and socket configurations.

The KSC2752OSTU is suitable for direct substitution in all applications originally designed for the 2SC51210P.

Frequently Asked Questions (FAQ)

Q: Can the KSC2752OSTU directly replace the 2SC51210P without circuit modification?

A: Yes. The KSC2752OSTU is electrically and mechanically compatible with the 2SC51210P. Both devices share identical voltage ratings, current gain specifications, and package configurations. Direct substitution is supported without circuit redesign.

Q: What is the significance of the higher collector current rating (500 mA) on the KSC2752OSTU compared to the 70 mA specification of the 2SC51210P?

A: The higher current rating on the substitute part does not create compatibility issues. Circuits designed for 70 mA operation will function correctly with a device rated for 500 mA. The substitute part will not draw excessive current; it will operate within the design parameters of the original circuit.

Q: Are the TO-126-3 packages of both parts physically identical?

A: Yes. Both the 2SC51210P and KSC2752OSTU utilize the TO-126-3 through-hole package. Pin configuration, lead spacing, and mounting hole alignment are identical, enabling direct PCB compatibility.

Q: What compliance advantages does the KSC2752OSTU offer over the 2SC51210P?

A: The KSC2752OSTU is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The 2SC51210P is RoHS non-compliant, reflecting its classification as an obsolete component. For new designs and systems requiring regulatory compliance, the KSC2752OSTU is the appropriate choice.

Q: Is the 80 MHz transition frequency of the 2SC51210P a limiting factor when substituting with the KSC2752OSTU?

A: No. The transition frequency specification is not provided for the KSC2752OSTU in the available data. However, the absence of this specification does not indicate incompatibility. Both devices are designed for general-purpose switching and amplification applications where the original 80 MHz specification is sufficient for circuit operation.

Q: What is the inventory status of each part?

A: The 2SC51210P has 745 pcs in stock but is classified as obsolete with no ongoing production. The KSC2752OSTU has 25,100 pcs in stock and maintains active product status, ensuring reliable long-term availability for production and maintenance requirements.