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BFQ540

The BFQ540 is an NPN wideband transistor from NXP Semiconductors, housed in a SOT89 package. It offers high gain, high output voltage, and low noise characteristics.

✓ Total Stock: 678 pcs

$ Price Range: $0.99

BFQ540 Available from 2 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Smaxon Electronics ✓ Non-Authorised Inventory information	410 pcs On Request	410 pcs	On Request	1	On Request	On Request	1412+	On Request	On Request
Fe Components ✓ Non-Authorised Inventory information	268 pcs On Request	268 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

BFQ540 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	NXP Semiconductors
Mounting Type	Surface Mount
Noise Figure	2.4 dB
Storage Temperature	°C ~ °C
Tape & Reel	No

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BFQ540 Description

Short technical summary and product information.

The BFQ540 is an NPN wideband transistor designed for applications requiring high performance in a compact form factor. It is packaged in a SOT89 plastic surface-mount package, featuring a collector pad for enhanced heat transfer.

Key electrical characteristics include a collector-base voltage of 20V and a collector-emitter voltage of 15V. The device offers a typical DC current gain (hFE) of 120 at 40mA collector current and 8V collector-emitter voltage. Its transition frequency (fT) is 9 GHz at 1 GHz, with an insertion power gain (|s21|2) of 13 dB at 900 MHz. The noise figure (F) is a low 2.4 dB at 900 MHz.

With gold metallization ensuring excellent reliability and a low thermal resistance, the BFQ540 is suitable for VHF, UHF, and CATV amplifiers. The operating junction temperature can reach up to 175 °C, with a total power dissipation of 1.2W at a soldering point temperature of 60 °C.

This transistor is designed for applications demanding high gain and low noise performance in RF circuits.

BFQ540 Quick Information

Product Type: NPN Wideband Transistor

Canonical Name: BFQ540 NPN Wideband Transistor

Subcategory: NPN

BFQ540 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

BFQ540 Estimated Pricing

Qty	Low	High
1+	$0.99	$0.99

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

BFQ540 Features

NPN wideband transistor in SOT89 package.
High gain and high output voltage.
Low noise figure for RF applications.
Gold metallization ensures excellent reliability.
Suitable for VHF, UHF, and CATV amplifiers.

BFQ540 Applications

Used in VHF amplifiers.
Suitable for UHF amplifiers.
Applied in CATV amplifiers.
Designed for wideband applications.

BFQ540 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the package type for the BFQ540 transistor?

The BFQ540 is supplied in a SOT89 plastic surface-mounted package.

What are the key electrical ratings for the BFQ540?

The BFQ540 has a collector-base voltage (VCBO) of 20V, a collector-emitter voltage (VCES) of 15V, and a collector current (IC) of 120mA.

What is the transition frequency of the BFQ540 transistor?

The transition frequency (fT) of the BFQ540 is 9 GHz at 40mA collector current, 8V collector-emitter voltage, and 1 GHz frequency.

What is the typical noise figure for the BFQ540 at 900 MHz?

The typical noise figure (F) for the BFQ540 at 900 MHz is 2.4 dB.

What is the RoHS status of the BFQ540?

The RoHS status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the BFQ540?

The Moisture Sensitivity Level (MSL) is 1 Unlimited.