BC640TFR Equivalent & Substitute Parts

Part Overview

The BC640TFR is a PNP bipolar junction transistor manufactured by onsemi, rated for 80 V collector-emitter breakdown voltage and 1 A maximum collector current. This device is packaged in a TO-92-3 through-hole configuration and operates at frequencies up to 100 MHz with a maximum power dissipation of 1 W. The BC640TFR is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

BC640TFR

onsemiIn Stock: 1084BC640TFR Datasheet

Current PartRFQ

BC640TA

onsemiIn Stock: 3513BC640TA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BC640TFR is determined by electrical and mechanical parameter equivalence. The following criteria establish direct substitutability:

Electrical Parameters (Must Match):

• Transistor Type: PNP
• Current - Collector (Ic) (Max): 1 A
• Voltage - Collector Emitter Breakdown (Max): 80 V
• Vce Saturation (Max) @ Ib, Ic: 500mV @ 50mA, 500mA
• Current - Collector Cutoff (Max): 100nA (ICBO)
• DC Current Gain (hFE) (Min) @ Ic, Vce: 40 @ 150mA, 2V
• Power - Max: 1 W
• Frequency - Transition: 100MHz
• 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

The BC640TA meets all specified electrical and mechanical parameters and qualifies as a direct substitute for the BC640TFR.

Parameter Comparison

Engineering Selection Recommendations

The BC640TA is the direct substitute for the BC640TFR. Both parts are manufactured by onsemi and share identical electrical and mechanical specifications. The primary distinction is product status: the BC640TFR is obsolete, while the BC640TA is active and currently in production.

The BC640TA provides additional compliance advantage through ROHS3 certification, meeting current regulatory requirements for electronic components. Both parts maintain REACH Unaffected status and carry the same ECCN and HTSUS classifications.

For new designs or ongoing production requiring the BC640TFR, the BC640TA is the appropriate selection. The active product status of the BC640TA ensures long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the BC640TA directly replace the BC640TFR in existing designs?

A: Yes. The BC640TA is electrically and mechanically identical to the BC640TFR. All electrical parameters, including collector current, breakdown voltage, saturation voltage, current gain, power rating, and frequency response, are equivalent. Both devices use the TO-92-3 through-hole package with formed leads.

Q: What is the primary reason to substitute the BC640TFR with the BC640TA?

A: The BC640TFR is classified as obsolete. The BC640TA is the active equivalent from the same manufacturer, ensuring continued availability and supply chain support.

Q: Are there packaging differences between the BC640TFR and BC640TA?

A: Both parts use the TO-226-3, TO-92-3 (TO-226AA) package with formed leads and through-hole mounting. No package conversion is required for substitution.

Q: Does the BC640TA meet current regulatory standards?

A: Yes. The BC640TA is ROHS3 compliant and maintains REACH Unaffected status, meeting current environmental and regulatory requirements.

Q: Are the thermal characteristics identical between the two parts?

A: Yes. Both the BC640TFR and BC640TA have a maximum operating junction temperature of 150°C and identical power dissipation ratings of 1 W.

Q: What is the difference in packaging format between the BC640TFR and BC640TA?

A: The BC640TFR is supplied in tube packaging, while the BC640TA is supplied in cut tape (CT) format. This is a packaging and delivery format difference only; the component itself and its electrical characteristics remain identical.