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BC550CTA BC550CTA is an NPN bipolar junction transistor from On Semiconductor. It features a 45V collector-emitter voltage, 100mA collector current, and 500mW power dissipation in a TO-92 package.
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BC550CTA

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
BC550CTA is an NPN bipolar junction transistor from On Semiconductor. It features a 45V collector-emitter voltage, 100mA collector current, and 500mW power dissipation in a TO-92 package.
✓ Total Stock: 158,165 pcs
$ Price Range: $0.06 - $0.28

BC550CTA Available from 1 distributor

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✓ Non-Authorised
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Flip Electronics ✓
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158,165 pcs
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BC550CTA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Frequency
Lead Style
Mounting Type
Operating Temperature
Power
Supplier Device Package
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage
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BC550CTA Description

Short technical summary and product information.

The BC550CTA is an NPN bipolar junction transistor (BJT) manufactured by On Semiconductor. It is designed for general-purpose amplification and switching applications in through-hole electronic circuits. The device is supplied in a TO-226-3 / TO-92-3 (TO-226AA) package with formed leads, making it suitable for standard PCB insertion.

 

Electrically, the transistor features a maximum collector-emitter voltage (Vceo) of 45V and a maximum collector current (Ic) of 100mA. It is rated for 500mW power dissipation. The minimum DC current gain (hFE) is 420 when measured at Ic=2mA and Vce=5V, providing reliable gain for small-signal stages. The collector-emitter saturation voltage is 600mV maximum at Ib=5mA and Ic=100mA, supporting efficient low-voltage switching. With a typical transition frequency of 300MHz, it can be used in low-frequency to high-frequency signal applications.

 

The BC550CTA is listed as RoHS compliant, and its maximum operating junction temperature is 150°C. As a through-hole transistor, it is commonly used in breadboards, prototyping, and long-life products where serviceability is important.

BC550CTA Quick Information

Product Type: NPN Bipolar Transistor (BJT)
Canonical Name: NPN Bipolar Transistor, 45V, 100mA, TO-92-3
Subcategory: Single

BC550CTA Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BC550CTA Estimated Pricing

Qty Low High
1+ $0.28 $0.28
10+ $0.17 $0.17
100+ $0.11 $0.11
500+ $0.08 $0.08
1,000+ $0.07 $0.07
2,000+ $0.06 $0.06

Estimated market price range - modelled values for guidance only, not live distributor offers.

BC550CTA Features

  • NPN bipolar transistor for general-purpose amplification.
  • Maximum 45V collector-emitter voltage rating.
  • Maximum 100mA collector current capability.
  • 500mW power dissipation in TO-92 package.
  • Minimum DC current gain of 420.

BC550CTA Applications

  • Amplify small analog signal levels.
  • Switch low-power DC loads.
  • Use in discrete through-hole circuits.
  • Function as a buffer or driver.

BC550CTA FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BC550CTA?

45V.

What is the maximum collector current rating?

100mA.

What is the power dissipation rating of the BC550CTA?

500mW.

What is the package type of the BC550CTA?

TO-226-3 / TO-92-3 (TO-226AA) with formed leads; supplier device package is TO-92-3.

What is the maximum operating junction temperature?

150°C.

Is the BC550CTA RoHS compliant?

The part is listed as RoHS3 compliant in the database.

What is the minimum DC current gain (hFE) of the BC550CTA?

420 minimum, tested at Ic=2mA and Vce=5V.

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