BC489 Equivalent & Substitute Parts

Part Overview

The BC489 is an NPN bipolar junction transistor manufactured by onsemi, rated for 80 V collector-emitter breakdown voltage and 500 mA maximum collector current. This device is packaged in a TO-92 through-hole configuration and is rated for 625 mW maximum power dissipation with a transition frequency of 200 MHz.

The BC489 is classified as an obsolete product. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and production requirements for legacy systems and applications utilizing this transistor.

Substiute Parts

BC489

onsemiIn Stock: 951BC489 Datasheet

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MPSA06-AP

Micro Commercial CoIn Stock: 64435MPSA06-AP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BC489 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Transistor type must be NPN
• Maximum collector current (Ic) must be equal to or greater than 500 mA
• Collector-emitter breakdown voltage (VCEO) must be equal to or greater than 80 V
• Maximum power dissipation must be equal to or greater than 625 mW
• Operating temperature range must encompass the application requirements

Mechanical Compatibility Criteria:

• Mounting type must be through-hole
• Package must be TO-92 or equivalent TO-226-3 configuration
• Lead configuration must be compatible with existing PCB layouts

The MPSA06-AP meets all electrical and mechanical substitution criteria for the BC489. Both devices share identical maximum collector current (500 mA), collector-emitter breakdown voltage (80 V), and power dissipation (625 mW) ratings. Both are NPN transistors in TO-92 through-hole packages with compatible operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

The MPSA06-AP is a direct electrical and mechanical substitute for the BC489. Both devices are classified as obsolete products and share identical maximum ratings for collector current, collector-emitter breakdown voltage, and power dissipation.

The MPSA06-AP offers improved compliance status, meeting ROHS3 requirements, whereas the BC489 is RoHS non-compliant. This distinction is relevant for applications subject to regulatory compliance requirements.

The transition frequency of the MPSA06-AP (100 MHz) is lower than the BC489 (200 MHz). This parameter difference must be evaluated against specific application frequency requirements. For applications operating below 100 MHz, the MPSA06-AP provides equivalent performance. For applications requiring operation at frequencies between 100 MHz and 200 MHz, the BC489 transition frequency specification must be retained.

Both devices are rated for identical maximum operating temperatures (150°C) and share compatible TO-92 through-hole packaging, ensuring mechanical interchangeability in existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the MPSA06-AP directly replace the BC489 in all applications?

A: The MPSA06-AP is electrically and mechanically compatible with the BC489 for applications operating at transition frequencies up to 100 MHz. Applications requiring the full 200 MHz transition frequency capability of the BC489 require evaluation of the MPSA06-AP's 100 MHz specification against specific circuit requirements.

Q: Are there packaging differences between the BC489 and MPSA06-AP?

A: Both devices utilize TO-92-3 through-hole packaging. The BC489 is supplied in standard TO-92 configuration, while the MPSA06-AP features formed leads in TO-226AA configuration. Both packages are mechanically compatible with standard TO-92 PCB footprints.

Q: What is the significance of the RoHS compliance difference?

A: The BC489 is RoHS non-compliant, while the MPSA06-AP meets ROHS3 compliance standards. For applications subject to RoHS regulatory requirements, the MPSA06-AP provides compliant substitution. For legacy systems without RoHS requirements, both devices are functionally equivalent.

Q: How do the DC current gain specifications compare?

A: The BC489 specifies a minimum DC current gain (hFE) of 60 at 100 mA collector current and 2 V collector-emitter voltage. The MPSA06-AP specifies a minimum DC current gain of 100 at 100 mA collector current and 1 V collector-emitter voltage. The MPSA06-AP exhibits higher current gain, which may affect circuit biasing and should be evaluated in the specific application context.

Q: Are both devices available in the same packaging format?

A: Both the BC489 and MPSA06-AP are supplied in TO-92 through-hole packages suitable for through-hole PCB assembly. The BC489 uses standard TO-226-3 long body configuration, while the MPSA06-AP uses TO-226AA formed leads configuration. Both are compatible with standard TO-92 footprints.