Equivalent & Substitute Parts for 2SC2873-O-TP

Part Overview

The 2SC2873-O-TP by Micro Commercial Co is a surface-mount NPN bipolar junction transistor (BJT) designed for general interface applications, with a maximum collector voltage of 50 V, collector current of 2 A, transition frequency of 120 MHz, and a maximum power dissipation of 500 mW. It is supplied in the SOT-89 (TO-243AA) package. The part status is “Last Time Buy,” indicating that sourcing this specific transistor may become difficult as inventory is depleted or discontinued. In such cases, identifying parametric equivalents and substitutes is necessary to maintain design continuity and supply chain reliability.

Key Parameters

Manufacturer Part Number	Transistor Type	Voltage - Collector Emitter Breakdown (Max)	Current - Collector (Ic) (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	Part Status
2SC2873-O-TP	NPN	50 V	2 A	500mV @ 50mA, 1A	100nA (ICBO)	120 @ 1mA, 6V	500 mW	120 MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-243AA	SOT-89	Last Time Buy

Substitute Part Grouping Explanation

Substitution is based strictly on matching or exceeding critical electrical and mechanical parameters, including transistor type (NPN), collector-emitter breakdown voltage (≥50 V), collector current (≥2 A), saturation voltage, cutoff current, DC current gain, maximum power dissipation, transition frequency, operating temperature range, mounting type (surface mount), and package outline (TO-243AA/SOT-89 or functionally equivalent). Equivalent or similar parts must fulfill these criteria to serve as direct replacements within the same product category.

Parameters referenced for substitution:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): ≥50 V
Current - Collector (Ic) (Max): ≥2 A
Vce Saturation (Max) @ Ib, Ic
Current - Collector Cutoff (Max): ≤ original
DC Current Gain (hFE) (Min) @ Ic, Vce: ≥ original
Power - Max: ≥ original
Frequency - Transition: ≥ original
Operating Temperature: suitable overlap
Mounting Type: Surface Mount
Package / Case: TO-243AA/SOT-89 or comparable

Parameter Comparison

Manufacturer Part Number	Transistor Type	Voltage - Collector Emitter Breakdown (Max)	Current - Collector (Ic) (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	Part Status
2SC2873-O-TP	NPN	50 V	2 A	500mV @ 50mA, 1A	100nA (ICBO)	120 @ 1mA, 6V	500 mW	120 MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-243AA	SOT-89	Last Time Buy
2SC2873-Y-TP	NPN	50 V	2 A	500mV @ 50mA, 1A	100nA (ICBO)	120 @ 1mA, 6V	500 mW	120 MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-243AA	SOT-89	Active
2SC5994-TD-E	NPN	50 V	2 A	300mV @ 50mA, 1A	1µA (ICBO)	200 @ 100mA, 2V	1.3 W	420 MHz	150°C (TJ)	Surface Mount	TO-243AA	PCP	Active
2SD2391T100Q	NPN	60 V	2 A	350mV @ 50mA, 1A	100nA (ICBO)	120 @ 500mA, 2V	2 W	210 MHz	150°C (TJ)	Surface Mount	TO-243AA	MPT3	Not For New Designs
PBSS4250X,115	NPN	50 V	2 A	320mV @ 200mA, 2A	100nA	300 @ 1A, 2V	1 W	100 MHz	150°C (TJ)	Surface Mount	TO-243AA	SOT-89	Active

Engineering Selection Recommendations

When selecting substitutes for 2SC2873-O-TP, preference is given to active models with direct parameter matches and compliance status. 2SC2873-Y-TP from the same manufacturer provides identical electrical parameters and package configuration and is “Active.” 2SC5994-TD-E, PBSS4250X,115, and 2SD2391T100Q also meet key parameter requirements; however, 2SD2391T100Q is “Not For New Designs.” All compared parts have REACH unaffected or ROHS3 compliant status as indicated. Suitable candidates for replacement prioritize active status and matching mechanical footprint per the supplied information.

Frequently Asked Questions (FAQ)

Q: Which substitute part has the closest parametric match to 2SC2873-O-TP?
A: 2SC2873-Y-TP matches all specified key parameters including transistor type, voltage, current, power, frequency, and package.

Q: Can the substitutes be used in the same circuit without modification?
A: Substitutes listed share equivalent electrical and mechanical specifications based on provided parameters. Package form factor (TO-243AA/SOT-89) matches the original.

Q: Are all substitute parts surface mount compatible?
A: All substitutes provided are specified as surface mount devices with TO-243AA or SOT-89 package types.

Q: What compliance certifications are associated with substitute parts?
A: Compliance statuses are listed as REACH unaffected and/or ROHS3 compliant for substitute parts as specified.

Q: Does part status affect selection?
A: Substitute selection prioritizes parts with “Active” status for long-term availability. Parts labeled “Not For New Designs” should be used with consideration for future supply constraints.

Q: Is frequency transition a critical substitution parameter?
A: Substitutes provide equal or higher transition frequency compared to the original, per engineering comparison of supplied data.

Q: Are collector current and voltage identical across all substitutes?
A: All substitutes specify at least 2 A collector current and 50 V (or higher) collector-emitter breakdown voltage.

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