BC327-016 Equivalent & Substitute Parts

Part Overview

The BC327-016 is an obsolete PNP bipolar junction transistor manufactured by onsemi, rated for 45 V collector-emitter breakdown voltage and 800 mA maximum collector current. The device is packaged in a Through Hole TO-92 (TO-226-3) configuration and delivers 625 mW maximum power dissipation with a transition frequency of 260 MHz. Due to its obsolete product status, equivalent substitute parts are necessary to maintain design continuity and ensure component availability for new production and repair applications.

Substiute Parts

BC327-016

onsemiIn Stock: 809BC327-016 Datasheet

Current PartRFQ

2N3906BU

Fairchild SemiconductorIn Stock: 502362N3906BU Datasheet

SimilarRFQ

2N4403BU

Fairchild SemiconductorIn Stock: 697452N4403BU Datasheet

SimilarRFQ

BC32725BU

onsemiIn Stock: 17157BC32725BU Datasheet

SimilarRFQ

BC32740BU

onsemiIn Stock: 11460BC32740BU Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BC327-016 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor type must be PNP
• Collector-emitter breakdown voltage must equal or exceed 45 V
• Maximum collector current must equal or exceed 800 mA
• Maximum power dissipation must equal or exceed 625 mW
• Mounting type must be Through Hole
• Package must be compatible with TO-92-3 footprint

Secondary Compatibility Factors:

• Operating temperature range must encompass -55°C to 150°C
• Transition frequency should support the intended application frequency range
• DC current gain characteristics must be suitable for circuit biasing requirements

The substitute parts listed below satisfy the primary substitution criteria and maintain electrical and mechanical compatibility with the BC327-016 within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

BC32740BU and BC32725BU are direct onsemi replacements for the BC327-016. Both devices maintain identical voltage and current ratings (45 V, 800 mA) and are actively manufactured. BC32740BU offers superior DC current gain (250 @ 100mA, 1V) compared to the original part, while BC32725BU provides moderate gain (160 @ 100mA, 1V). Both are ROHS3 compliant, addressing regulatory requirements that the obsolete BC327-016 does not meet. The transition frequency reduction from 260 MHz to 100 MHz in these parts requires circuit evaluation for high-frequency applications.

Secondary Substitutes (Conditional Compatibility):

2N4403BU (Fairchild Semiconductor) provides 600 mA maximum collector current and 40 V breakdown voltage, meeting most applications designed for the BC327-016 except those requiring the full 800 mA current rating. This device maintains active product status and is widely available.

2N3906BU (Fairchild Semiconductor) is suitable only for applications with collector current requirements not exceeding 200 mA. The 40 V breakdown voltage and reduced current rating limit its use to lower-power circuit implementations.

Compliance Considerations:

Applications subject to RoHS3 compliance requirements must use BC32740BU or BC32725BU. The original BC327-016 and Fairchild devices do not meet current RoHS standards.

Frequently Asked Questions (FAQ)

Q: Can BC32740BU directly replace BC327-016 in all applications?

A: BC32740BU maintains identical voltage (45 V) and current (800 mA) ratings and is pin-compatible in TO-92-3 packaging. The transition frequency is reduced from 260 MHz to 100 MHz. Applications operating above 100 MHz require circuit analysis to confirm performance.

Q: What is the difference between BC32740BU and BC32725BU?

A: Both devices are onsemi PNP transistors with identical electrical ratings (45 V, 800 mA, 625 mW). The primary difference is DC current gain: BC32740BU provides 250 @ 100mA, 1V while BC32725BU provides 160 @ 100mA, 1V. Both are ROHS3 compliant and actively manufactured.

Q: Is 2N4403BU a suitable replacement for BC327-016?

A: 2N4403BU is compatible for applications requiring up to 600 mA collector current. The 40 V breakdown voltage is 5 V lower than the BC327-016. Applications designed for the full 800 mA rating require BC32740BU or BC32725BU.

Q: Why is 2N3906BU listed as a substitute if it only handles 200 mA?

A: 2N3906BU is included for applications where the BC327-016 was used but actual circuit current requirements do not exceed 200 mA. This device is widely available and actively manufactured, making it suitable for legacy design implementations with reduced current demands.

Q: Are all substitute parts available in the same TO-92-3 package?

A: Yes. All listed substitute parts are packaged in TO-226-3 or TO-92-3 configurations, maintaining mechanical and pin compatibility with the BC327-016.

Q: What compliance advantages do BC32740BU and BC32725BU offer?

A: Both devices are ROHS3 compliant, addressing current environmental and regulatory requirements. The BC327-016 is RoHS non-compliant. New production designs should utilize ROHS3 compliant substitutes.

Q: How does the reduced transition frequency in BC32740BU and BC32725BU affect circuit performance?

A: The transition frequency reduction from 260 MHz to 100 MHz may impact high-frequency switching applications. Circuits operating below 100 MHz experience no performance degradation. High-frequency applications require detailed circuit analysis and potential redesign.