BC184 Equivalent & Substitute Parts

Part Overview

The BC184 is an NPN bipolar junction transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. It features a maximum collector current of 100 mA, collector-emitter breakdown voltage of 30 V, and a transition frequency of 150 MHz in a Through Hole TO-92-3 package. The BC184 is classified as obsolete, making identification of compatible substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

BC184

onsemiIn Stock: 1198BC184 Datasheet

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LP395Z/NOPB

Texas InstrumentsIn Stock: 4197LP395Z/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BC184 is determined by the following critical parameters:

1. Transistor Type: NPN configuration required for functional equivalence
2. Package / Case: TO-92-3 Through Hole package for mechanical and thermal compatibility
3. Voltage - Collector Emitter Breakdown (Max): Minimum 30 V to support the same voltage operating range
4. Current - Collector (Ic) (Max): Minimum 100 mA to support the same current handling capability
5. Mounting Type: Through Hole configuration for PCB assembly compatibility

The LP395Z/NOPB from Texas Instruments qualifies as a substitute based on matching NPN transistor type, TO-92-3 package configuration, and Through Hole mounting. The LP395Z/NOPB provides a higher collector-emitter breakdown voltage of 36 V, which exceeds the BC184 requirement of 30 V, ensuring compatibility in voltage-constrained applications.

Parameter Comparison

Engineering Selection Recommendations

The LP395Z/NOPB is an active product from Texas Instruments and serves as a functional substitute for the obsolete BC184. Both components share identical NPN transistor configuration and TO-92-3 Through Hole package geometry, ensuring direct mechanical and electrical compatibility in PCB layouts.

The LP395Z/NOPB provides a higher maximum collector-emitter breakdown voltage (36 V versus 30 V), which offers improved voltage margin in applications operating near the BC184 specification limit. This characteristic makes the LP395Z/NOPB suitable for designs requiring sustained availability and compliance with current manufacturing standards.

The LP395Z/NOPB is RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements for electronic component procurement. The BC184, as an obsolete component, may present supply chain constraints and does not carry current compliance certifications.

Operating temperature ranges differ between the two components: the BC184 operates from −55°C to 150°C, while the LP395Z/NOPB operates from 0°C to 125°C. Applications requiring operation below 0°C or above 125°C must evaluate this specification difference against design requirements.

Frequently Asked Questions (FAQ)

Q: Can the LP395Z/NOPB directly replace the BC184 in existing designs?

A: Yes. Both components are NPN transistors in TO-92-3 Through Hole packages with identical pin configurations. The LP395Z/NOPB provides higher voltage rating (36 V versus 30 V), ensuring compatibility in voltage-constrained applications. Designs must verify that operating temperature requirements fall within the LP395Z/NOPB range of 0°C to 125°C.

Q: What are the key differences between the BC184 and LP395Z/NOPB?

A: The primary differences are product status (BC184 is obsolete; LP395Z/NOPB is active), maximum collector-emitter breakdown voltage (30 V versus 36 V), and operating temperature range (−55°C to 150°C versus 0°C to 125°C). The LP395Z/NOPB carries RoHS3 compliance certification.

Q: Are the pin configurations identical between BC184 and LP395Z/NOPB?

A: Yes. Both components use the TO-92-3 package with identical pin assignments: Base, Collector, and Emitter. No PCB layout modifications are required for substitution.

Q: Does the higher voltage rating of the LP395Z/NOPB affect circuit performance?

A: No. The higher maximum collector-emitter breakdown voltage (36 V) of the LP395Z/NOPB does not degrade performance in circuits designed for 30 V operation. It provides additional voltage margin and improved reliability in applications operating near maximum voltage specifications.

Q: What compliance certifications apply to each component?

A: The BC184 carries REACH Unaffected status. The LP395Z/NOPB carries RoHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for electronic component procurement in regulated markets.

Q: Are there inventory considerations for these components?

A: The BC184 is obsolete and may have limited availability. The LP395Z/NOPB is an active product with established supply chains, ensuring long-term procurement reliability and design continuity.