BC547CTF Equivalent & Substitute Parts

Part Overview

The BC547CTF is a Bipolar (BJT) NPN transistor manufactured by onsemi, rated for 45 V collector-emitter breakdown voltage and 100 mA maximum collector current. This component is packaged in TO-92-3 (TO-226AA) through-hole configuration and is classified as obsolete. The BC547CTF operates at a maximum junction temperature of 150°C with 500 mW power dissipation capability and 300 MHz transition frequency.

Due to its obsolete product status, direct replacement with active equivalent parts is necessary for new designs and ongoing production requirements. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

BC547CTF

onsemiIn Stock: 890BC547CTF Datasheet

Current PartRFQ

BC550CTA

onsemiIn Stock: 13803BC550CTA Datasheet

DirectRFQ

BC547CTA

onsemiIn Stock: 47080BC547CTA Datasheet

Parametric EquivalentRFQ

BC547CTFR

onsemiIn Stock: 7596BC547CTFR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BC547CTF is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters establish substitution validity:

Electrical Parameters:

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (Max): 45 V
• Current - Collector (Ic) (Max): 100 mA
• Vce Saturation (Max) @ Ib, Ic: 600 mV @ 5 mA, 100 mA
• Current - Collector Cutoff (Max): 15 nA (ICBO)
• DC Current Gain (hFE) (Min) @ Ic, Vce: 420 @ 2 mA, 5 V
• Power - Max: 500 mW
• Frequency - Transition: 300 MHz
• Operating Temperature (TJ): 150°C

Mechanical Parameters:

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

All substitute parts listed maintain complete parametric equivalence across these specifications. Substitutes are classified as direct manufacturer equivalents or parametric equivalents based on product line designation.

Parameter Comparison

Engineering Selection Recommendations

BC550CTA is classified as a direct manufacturer equivalent. This part maintains all electrical and mechanical specifications identical to the BC547CTF while offering active product status. BC550CTA is ROHS3 compliant and carries REACH Unaffected certification. This substitute is suitable for applications requiring regulatory compliance and long-term availability assurance.

BC547CTA is classified as a parametric equivalent within the BC547 product line. This part provides identical electrical performance and mechanical compatibility with active product status. BC547CTA is ROHS3 compliant and carries REACH Unaffected certification. This substitute maintains the same base product designation as the original part while offering improved availability and compliance status.

BC547CTFR is classified as a parametric equivalent within the BC547 product line. This part provides identical electrical performance and mechanical compatibility with active product status. BC547CTFR is ROHS3 compliant and carries REACH Unaffected certification. This substitute maintains the same base product designation and packaging format as the original part.

All three substitute parts are manufactured by onsemi and are suitable for direct replacement in applications currently using the BC547CTF. Selection among substitutes should be based on packaging format requirements (Cut Tape availability) and inventory considerations.

Frequently Asked Questions (FAQ)

Q: Can BC550CTA be used as a direct replacement for BC547CTF?

A: Yes. BC550CTA maintains identical electrical specifications including 45 V collector-emitter breakdown voltage, 100 mA maximum collector current, 600 mV saturation voltage, 420 minimum DC current gain, 500 mW power dissipation, and 300 MHz transition frequency. Both parts use TO-92-3 through-hole packaging. BC550CTA is active product status with ROHS3 compliance.

Q: What is the difference between BC547CTA and BC547CTFR?

A: Both BC547CTA and BC547CTFR are parametric equivalents within the BC547 product line with identical electrical and mechanical specifications. Both are active products with ROHS3 compliance and REACH Unaffected certification. The primary difference is packaging format availability through distribution channels.

Q: Are all substitute parts compatible with the original BC547CTF pinout?

A: Yes. All substitute parts use TO-92-3 (TO-226AA) through-hole packaging with formed leads. Pin configuration and mechanical dimensions are identical across BC547CTF, BC550CTA, BC547CTA, and BC547CTFR.

Q: What regulatory certifications apply to the substitute parts?

A: All substitute parts carry ROHS3 compliance and REACH Unaffected certification. Export classification for all parts is EAR99. HTSUS code is 8541.21.0075 for all parts.

Q: Why is BC547CTF classified as obsolete?

A: BC547CTF is designated as obsolete product status. Substitute parts BC550CTA, BC547CTA, and BC547CTFR are active products offering equivalent functionality with improved availability and regulatory compliance.

Q: Can these transistors be used in high-frequency applications?

A: All parts including BC547CTF and substitutes operate at 300 MHz transition frequency. Application suitability depends on specific circuit requirements and operating conditions beyond the scope of parametric equivalence.

Q: What is the maximum operating temperature for these transistors?

A: All parts are rated for 150°C maximum junction temperature (TJ). This specification is identical across BC547CTF and all substitute parts.