BFQ19S BFQ19S is an NPN silicon RF transistor from Infineon. It features a 15V collector-emitter breakdown voltage and a transition frequency of 4-5.5GHz.
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BFQ19S

Available from 1 distributors
Mfr Name: Infineon
Infineon
BFQ19S is an NPN silicon RF transistor from Infineon. It features a 15V collector-emitter breakdown voltage and a transition frequency of 4-5.5GHz.
✓ Total Stock: 24 pcs
$ Price Range: $0.99

BFQ19S Available from 1 distributor

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✓ Non-Authorised
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24 pcs
24 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16

BFQ19S Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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BFQ19S Description

Short technical summary and product information.

The BFQ19S is an NPN silicon RF transistor designed for high-frequency amplification applications. Manufactured by Infineon, this transistor offers a collector-emitter breakdown voltage of 15V minimum and a DC current gain range of 70 to 140. With a transition frequency of 4 to 5.5 GHz, it is suitable for RF circuits up to the GHz range. The transistor features low leakage currents: collector-emitter cutoff current of 10µA maximum, collector-base cutoff current of 100nA maximum, and emitter-base cutoff current of 100nA maximum. Its collector-base capacitance is typically 1.05pF and collector-emitter capacitance is 0.4pF, making it suitable for high-frequency designs. The BFQ19S is commonly used in RF amplifier stages, oscillators, and other wireless communication circuits.

BFQ19S Quick Information

Product Type: RF Transistor
Canonical Name: BFQ19S NPN Silicon RF Transistor
Subcategory: NPN RF Transistor

BFQ19S Compliance

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

BFQ19S Estimated Pricing

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1+ $0.99 $0.99

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

BFQ19S Features

  • 15V minimum collector-emitter breakdown voltage.
  • 4-5.5GHz transition frequency for RF applications.
  • DC current gain range of 70-140.
  • Low leakage currents: 10µA max ICES.
  • Low collector-base capacitance of 1.05pF typical.

BFQ19S Applications

  • Used in RF amplifier stages.
  • Suitable for oscillator circuits.
  • Ideal for wireless communication systems.
  • Applicable in high-frequency signal processing.

BFQ19S FAQs

6 frequently asked questions generated from this part’s specifications.
What is the collector-emitter breakdown voltage of the BFQ19S?

The minimum collector-emitter breakdown voltage (V(BR)CEO) is 15V.

What is the transition frequency of the BFQ19S?

The transition frequency (fT) is 4 to 5.5 GHz.

What is the DC current gain range of the BFQ19S?

The DC current gain (hFE) ranges from 70 to 140.

What are the leakage currents of the BFQ19S?

Collector-emitter cutoff current (ICES) is 10µA max, collector-base cutoff current (ICBO) is 100nA max, and emitter-base cutoff current (IEBO) is 100nA max.

What is the collector-base capacitance of the BFQ19S?

The collector-base capacitance (Ccb) is typically 1.05pF and maximum 1.35pF.

What is the collector-emitter capacitance of the BFQ19S?

The collector-emitter capacitance (Cce) is typically 0.4pF.

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