BC546B_J35Z Equivalent & Substitute Parts

Part Overview

The BC546B_J35Z is a Bipolar (BJT) NPN transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. This device operates at a maximum collector voltage of 65 V with a collector current rating of 100 mA and a transition frequency of 300 MHz. The part is housed in a TO-92-3 through-hole package with a maximum power dissipation of 500 mW.

The BC546B_J35Z carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this transistor.

Substiute Parts

BC546B_J35Z

onsemiIn Stock: 1006BC546B_J35Z Datasheet

Current PartRFQ

BC546BTF

onsemiIn Stock: 7773BC546BTF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BC546B_J35Z is determined by strict electrical and mechanical parameter matching. The following criteria establish valid equivalence:

Electrical Parameters (Must Match):

• Transistor Type: NPN
• Current - Collector (Ic) (Max): 100 mA
• Voltage - Collector Emitter Breakdown (Max): 65 V
• Vce Saturation (Max) @ Ib, Ic: 600 mV @ 5 mA, 100 mA
• Current - Collector Cutoff (Max): 15 nA
• DC Current Gain (hFE) (Min) @ Ic, Vce: 200 @ 2 mA, 5 V
• Power - Max: 500 mW
• Frequency - Transition: 300 MHz
• Operating Temperature (TJ): 150 °C

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: TO-226-3, TO-92-3 (TO-226AA) Formed Leads

Substitute parts must satisfy all electrical and mechanical parameters without deviation. Packaging format (Cut Tape, Tube, Reel) does not affect electrical substitutability but may impact procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

The BC546BTF is a direct electrical and mechanical equivalent to the BC546B_J35Z. Both devices share identical electrical specifications across all critical parameters: collector current, breakdown voltage, saturation voltage, cutoff current, DC current gain, power dissipation, transition frequency, and operating temperature range. Both are housed in the TO-92-3 through-hole package with formed leads.

The primary distinction between these parts is product status and compliance certification. The BC546B_J35Z is classified as Obsolete, while the BC546BTF maintains Active product status. The BC546BTF carries RoHS3 compliance certification, whereas the BC546B_J35Z does not specify this compliance. Both parts are REACH Unaffected and classified under ECCN EAR99.

For new designs or ongoing production requiring a transistor with the BC546 electrical and mechanical characteristics, the BC546BTF is the appropriate selection due to its Active status and modern compliance certifications. The packaging format difference (Cut Tape for BC546BTF versus the unspecified format for BC546B_J35Z) does not affect electrical performance and relates only to procurement and handling logistics.

Frequently Asked Questions (FAQ)

Q: Can BC546BTF be used as a direct replacement for BC546B_J35Z in existing circuit designs?

A: Yes. The BC546BTF satisfies all electrical and mechanical parameter requirements for direct substitution. Both devices are NPN transistors with identical maximum collector current (100 mA), breakdown voltage (65 V), saturation voltage (600 mV @ 5 mA, 100 mA), cutoff current (15 nA), DC current gain (200 @ 2 mA, 5 V), power dissipation (500 mW), transition frequency (300 MHz), and operating temperature (150 °C). Both use the TO-92-3 through-hole package.

Q: What is the significance of the Obsolete status for BC546B_J35Z?

A: Obsolete status indicates that the manufacturer has discontinued production of this part number. Substitution with an Active equivalent part such as BC546BTF ensures continued supply chain availability and access to current manufacturing processes and quality standards.

Q: Does the packaging format difference (Cut Tape for BC546BTF) affect circuit performance?

A: No. Packaging format refers to the delivery and handling method (Cut Tape, Tube, Reel, etc.) and does not affect electrical performance or circuit functionality. The physical component and its electrical characteristics remain identical regardless of packaging format.

Q: Are there compliance differences between BC546B_J35Z and BC546BTF?

A: Both parts are REACH Unaffected and classified under ECCN EAR99. The BC546BTF specifies RoHS3 compliance, while the BC546B_J35Z does not include this certification in the provided data. Both parts are suitable for applications requiring REACH and export control compliance.

Q: Can BC546BTF be used in high-frequency applications?

A: Yes. The BC546BTF has a transition frequency of 300 MHz, which supports high-frequency switching and amplification applications within this frequency range. This specification is identical to the BC546B_J35Z.