BC546_J35Z Equivalent & Substitute Parts

Part Overview

The BC546_J35Z is an NPN bipolar junction transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. This device features a maximum collector current of 100 mA, collector-emitter breakdown voltage of 65 V, and a transition frequency of 300 MHz. The component is packaged in a TO-92-3 through-hole configuration with a maximum power dissipation of 500 mW.

The BC546_J35Z carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or repair requirements for legacy systems utilizing this transistor.

Substiute Parts

BC546_J35Z

onsemiIn Stock: 1073BC546_J35Z Datasheet

Current PartRFQ

BC546ABU

onsemiIn Stock: 5653BC546ABU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BC546_J35Z is determined by electrical and mechanical parameter equivalence. The critical parameters that define substitutability are:

• Transistor Type: NPN configuration
• Current Rating: Maximum collector current of 100 mA
• Voltage Rating: Collector-emitter breakdown voltage of 65 V
• Saturation Characteristics: Vce saturation of 600 mV at specified base and collector currents
• Current Gain: DC current gain (hFE) minimum of 110 at 2 mA collector current and 5 V Vce
• Power Dissipation: Maximum power rating of 500 mW
• Frequency Response: Transition frequency of 300 MHz
• Package Configuration: TO-92-3 through-hole mounting

Substitute parts must match all electrical specifications and maintain identical or compatible package geometry to ensure direct replacement capability in existing circuit designs and PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

The BC546ABU is a direct electrical and mechanical equivalent to the BC546_J35Z. Both devices are manufactured by onsemi and share identical electrical specifications across all critical parameters including current ratings, voltage ratings, gain characteristics, and frequency response.

The primary distinction between the two parts is product status: the BC546_J35Z is obsolete, while the BC546ABU maintains active product status. This status difference indicates that BC546ABU is the current production equivalent and is recommended for new designs and ongoing supply requirements.

Both parts carry REACH Unaffected status and EAR99 export classification, ensuring equivalent regulatory compliance. The BC546ABU is RoHS3 compliant, supporting environmental and regulatory requirements for modern applications.

The identical TO-92-3 package configuration ensures mechanical compatibility with existing PCB layouts and through-hole assembly processes. No circuit modifications or board redesign are required when substituting BC546ABU for BC546_J35Z.

Frequently Asked Questions (FAQ)

Q: Can BC546ABU be used as a direct replacement for BC546_J35Z in existing designs?

A: Yes. The BC546ABU is electrically and mechanically identical to the BC546_J35Z. All electrical parameters, including current ratings, voltage ratings, gain characteristics, and frequency response, are matched. The identical TO-92-3 package configuration permits direct substitution without circuit modification or PCB redesign.

Q: What is the primary reason to substitute BC546_J35Z with BC546ABU?

A: The BC546_J35Z carries obsolete product status, indicating discontinued manufacturing. The BC546ABU is the active production equivalent from the same manufacturer, ensuring reliable long-term supply availability and supporting ongoing production requirements.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts carry identical REACH Unaffected status and EAR99 export classification. The BC546ABU is RoHS3 compliant, meeting current environmental standards. No compliance barriers exist to substitution.

Q: Does the packaging differ between BC546_J35Z and BC546ABU?

A: No. Both parts use identical TO-92-3 (TO-226AA) through-hole packaging. The physical dimensions, lead configuration, and mounting requirements are identical, permitting direct board-level substitution.

Q: Are the electrical characteristics guaranteed to be identical?

A: Yes. All specified electrical parameters are identical: maximum collector current (100 mA), collector-emitter breakdown voltage (65 V), saturation voltage (600 mV), current gain (110 minimum), power dissipation (500 mW), and transition frequency (300 MHz) are matched between both parts.

Q: What inventory status should be considered when selecting between these parts?

A: BC546_J35Z inventory is limited at 1002 pieces. BC546ABU has significantly higher availability at 5556 pieces. For new production and long-term supply planning, BC546ABU is the preferred selection due to active product status and superior inventory levels.