2N5089 Equivalent & Substitute Parts

Part Overview

The 2N5089 is an NPN bipolar junction transistor (BJT) manufactured by onsemi, designed for general-purpose switching and amplification applications. The device features a maximum collector current of 50 mA, collector-emitter breakdown voltage of 25 V, and a transition frequency of 50 MHz in a Through Hole TO-92 package. The 2N5089 is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility within the specified parameter ranges while accommodating modern component availability and compliance requirements.

Substiute Parts

2N5089

onsemiIn Stock: 20492N5089 Datasheet

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2N3904TF

onsemiIn Stock: 22312N3904TF Datasheet

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2N5089 PBFREE

Central Semiconductor CorpIn Stock: 138232N5089 PBFREE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2N5089 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent (Identical Electrical Specifications): The 2N5089 PBFREE maintains all core electrical parameters of the original 2N5089, including maximum collector current (50 mA), collector-emitter breakdown voltage (25 V), DC current gain (400 @ 100µA, 5V), and power dissipation (625 mW). This part is manufactured by Central Semiconductor Corp and is RoHS3 compliant with active product status. The operating temperature range extends to -65°C, providing enhanced low-temperature performance. Package configuration remains TO-92-3 (TO-226AA) Through Hole.

Functional Substitute (Enhanced Electrical Specifications): The 2N3904TF manufactured by onsemi provides enhanced electrical performance suitable for applications requiring higher current handling or voltage ratings. This part exceeds the 2N5089 specifications in maximum collector current (200 mA versus 50 mA), collector-emitter breakdown voltage (40 V versus 25 V), and transition frequency (300 MHz versus 50 MHz). The 2N3904TF maintains identical power dissipation (625 mW) and operating temperature range (-55°C to 150°C). Package configuration is TO-92-3 Through Hole. This part is RoHS3 compliant with active product status.

Substitution logic is based on the following key parameters: transistor type (NPN), mounting type (Through Hole), package family (TO-92-3), power dissipation (625 mW), and operating temperature range compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Identical Electrical Performance): The 2N5089 PBFREE is the primary equivalent for the obsolete 2N5089. Both parts maintain identical electrical specifications across all critical parameters: maximum collector current (50 mA), collector-emitter breakdown voltage (25 V), DC current gain (400 @ 100µA, 5V), and transition frequency (50 MHz). The 2N5089 PBFREE is manufactured by Central Semiconductor Corp and carries RoHS3 compliance, addressing regulatory requirements for new designs. The extended operating temperature range (-65°C to 150°C) provides additional margin for low-temperature applications. Through Hole TO-92-3 package configuration ensures mechanical and electrical compatibility with existing PCB layouts designed for the original 2N5089.

For Enhanced Performance Applications: The 2N3904TF is suitable for applications requiring higher current capacity or voltage headroom beyond the 2N5089 specifications. This part accommodates collector currents up to 200 mA (four times the 2N5089 rating) and collector-emitter breakdown voltage of 40 V (1.6 times the 2N5089 rating). The transition frequency of 300 MHz supports higher-frequency switching applications. The 2N3904TF maintains identical power dissipation (625 mW) and operating temperature range (-55°C to 150°C). RoHS3 compliance and active product status ensure long-term availability. Circuit design modifications may be required to accommodate the lower DC current gain (100 @ 10mA, 1V) compared to the 2N5089 (400 @ 100µA, 5V).

Compliance Considerations: Both substitute parts are RoHS3 compliant, addressing environmental and regulatory requirements. The original 2N5089 is RoHS non-compliant and carries obsolete product status. Selection of either substitute part ensures compliance with current electronic component standards.

Frequently Asked Questions (FAQ)

Q: Can the 2N5089 PBFREE be used as a direct replacement for the obsolete 2N5089?

A: Yes. The 2N5089 PBFREE maintains identical electrical specifications across all critical parameters, including maximum collector current (50 mA), collector-emitter breakdown voltage (25 V), DC current gain (400 @ 100µA, 5V), power dissipation (625 mW), and transition frequency (50 MHz). Both parts use the Through Hole TO-92-3 package. Pin configuration and electrical behavior are identical, enabling direct substitution without circuit modification.

Q: What are the key differences between the 2N5089 and the 2N3904TF?

A: The 2N3904TF provides enhanced electrical performance in three areas: maximum collector current (200 mA versus 50 mA), collector-emitter breakdown voltage (40 V versus 25 V), and transition frequency (300 MHz versus 50 MHz). Both parts share identical power dissipation (625 mW), operating temperature range (-55°C to 150°C), and Through Hole TO-92-3 package configuration. The 2N3904TF exhibits lower DC current gain (100 @ 10mA, 1V) compared to the 2N5089 (400 @ 100µA, 5V).

Q: Is the 2N3904TF a pin-compatible substitute for the 2N5089?

A: Yes. Both the 2N5089 and 2N3904TF use the Through Hole TO-92-3 package with identical pin configuration (Base, Collector, Emitter). Physical and electrical pin compatibility enables direct substitution. However, circuit performance may differ due to enhanced electrical specifications of the 2N3904TF, particularly the higher maximum collector current and transition frequency.

Q: What is the impact of the lower DC current gain in the 2N3904TF compared to the 2N5089?

A: The 2N3904TF exhibits a DC current gain (hFE) of 100 @ 10mA, 1V, compared to the 2N5089 specification of 400 @ 100µA, 5V. In amplifier circuits, lower current gain requires higher base drive current to achieve equivalent collector current. In switching applications, lower current gain may necessitate increased base current to ensure reliable saturation. Circuit design review is recommended when substituting the 2N3904TF for the 2N5089 in gain-sensitive applications.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the 2N5089 PBFREE and 2N3904TF are RoHS3 compliant. The original 2N5089 is RoHS non-compliant. Selection of either substitute part ensures compliance with current environmental and regulatory standards for electronic components.

Q: What is the operating temperature range for each part?

A: The 2N5089 and 2N3904TF both operate from -55°C to 150°C (TJ). The 2N5089 PBFREE extends the low-temperature limit to -65°C, providing enhanced performance in extreme cold environments. All three parts maintain the same upper temperature limit of 150°C.

Q: Can the 2N5089 PBFREE be used in applications originally designed for the 2N3904TF?

A: The 2N5089 PBFREE is not a suitable substitute for the 2N3904TF in applications requiring the enhanced electrical specifications of the 2N3904TF. The 2N5089 PBFREE is limited to 50 mA maximum collector current and 25 V collector-emitter breakdown voltage, compared to the 2N3904TF ratings of 200 mA and 40 V respectively. Applications designed for the higher current and voltage capabilities of the 2N3904TF will not function correctly with the 2N5089 PBFREE.

Q: What packaging options are available for these parts?

A: All three parts (2N5089, 2N5089 PBFREE, and 2N3904TF) are available in Through Hole TO-92-3 (TO-226) package configuration. The 2N5089 PBFREE is supplied in Bulk packaging, while the 2N3904TF is supplied in Cut Tape (CT) packaging. Package family and pin configuration remain consistent across all three parts.