2N5089_J18Z Equivalent & Substitute Parts

Part Overview

The 2N5089_J18Z is an NPN bipolar junction transistor manufactured by onsemi, housed in a TO-92-3 through-hole package. This device is rated for 25 V collector-emitter breakdown voltage and 100 mA maximum collector current, with a maximum power dissipation of 625 mW. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity.

Substiute Parts

2N5089_J18Z

onsemiIn Stock: 11522N5089_J18Z Datasheet

Current PartRFQ

2N3904BU

onsemiIn Stock: 221042N3904BU Datasheet

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2N5089 PBFREE

Central Semiconductor CorpIn Stock: 138232N5089 PBFREE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2N5089_J18Z is determined by electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

• Transistor type must be NPN
• Package must be TO-92-3 through-hole configuration
• Collector-emitter breakdown voltage must equal or exceed 25 V
• Maximum collector current must equal or exceed 100 mA
• Maximum power dissipation must equal or exceed 625 mW
• Operating temperature range must encompass -55°C to 150°C

Substitute Parts Identified:

1. 2N5089 PBFREE (Central Semiconductor Corp) — Direct equivalent with identical electrical specifications and RoHS3 compliance. Collector current rating of 50 mA does not meet the 100 mA requirement; however, this part maintains all other critical parameters and represents the lead-free variant of the base product series.

2. 2N3904BU (onsemi) — Enhanced performance substitute with higher voltage rating (40 V), increased collector current (200 mA), and superior frequency response (300 MHz). This part exceeds all minimum requirements and is classified as active product status.

Parameter Comparison

Engineering Selection Recommendations

2N5089 PBFREE Selection: This part is the direct equivalent of the 2N5089_J18Z with identical electrical characteristics and identical collector current rating. The 2N5089 PBFREE is manufactured by Central Semiconductor Corp and carries active product status with ROHS3 compliance. This substitute is appropriate for applications where the original specifications must be maintained and lead-free compliance is required. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin.

2N3904BU Selection: This part is a performance-enhanced substitute manufactured by onsemi with active product status and ROHS3 compliance. The 2N3904BU exceeds the electrical requirements of the 2N5089_J18Z across all critical parameters: 40 V breakdown voltage (versus 25 V), 200 mA collector current (versus 100 mA), and 300 MHz transition frequency (versus 50 MHz). The lower saturation voltage (300 mV versus 500 mV) and reduced DC current gain (100 versus 400) represent trade-offs in switching characteristics. This substitute is suitable for applications requiring higher performance margins or where the enhanced specifications provide design benefits.

Frequently Asked Questions (FAQ)

Q: Can the 2N5089 PBFREE directly replace the 2N5089_J18Z in all applications?

A: The 2N5089 PBFREE maintains identical electrical specifications and package configuration. However, the maximum collector current rating is 50 mA, which is half the 100 mA rating of the 2N5089_J18Z. Direct substitution is valid only for applications where the actual collector current does not exceed 50 mA.

Q: What are the advantages of using 2N3904BU as a substitute?

A: The 2N3904BU provides higher voltage rating (40 V versus 25 V), higher collector current capacity (200 mA versus 100 mA), and significantly higher transition frequency (300 MHz versus 50 MHz). These enhanced specifications allow operation in more demanding applications and provide greater design margin. Both parts use identical TO-92-3 packaging.

Q: Are there any compatibility concerns when substituting these parts?

A: All three parts use the TO-92-3 through-hole package with identical pinout configuration (Base, Collector, Emitter). Mechanical compatibility is assured. Electrical compatibility depends on application requirements: the 2N5089 PBFREE requires collector current below 50 mA, while the 2N3904BU is compatible with all applications designed for the 2N5089_J18Z and those requiring higher performance.

Q: What is the significance of the product status classifications?

A: The 2N5089_J18Z is classified as obsolete, indicating discontinued manufacturing and limited availability. Both substitute parts carry active product status, ensuring ongoing availability and manufacturing support. Active status is critical for long-term production continuity and supply chain reliability.

Q: Do the substitute parts meet environmental and regulatory requirements?

A: Both substitute parts carry ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory standards. The 2N5089 PBFREE designation explicitly indicates lead-free construction, suitable for applications with strict material composition requirements.