BLF571 datasheet(4/14 Pages) AMPLEON

Part #	BLF571

Description	HF / VHF power LDMOS transistor

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Manufacturer	AMPLEON [Ampleon Netherlands B.V.]

Direct Link	https://www.ampleon.com

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BLF571#3

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Product data sheet

Rev. 3 — 1 September 2015

4 of 14

BLF571

HF / VHF power LDMOS transistor

6.1 Ruggedness in class-AB operation

The BLF571 is capable of withstanding a load mismatch corresponding to VSWR = 13 : 1

through all phases under the following conditions: VDS = 50 V; IDq = 50 mA; PL = 20 W;

f = 225 MHz.

7. Application information

7.1 Impedance information

VGS = 0 V; f = 1 MHz.

Fig 1.

Output capacitance as a function of drain-source voltage; capacitance value

without internal matching

VDS (V)

050

001aaj172

Coss

(pF)

Table 8.

Typical impedance

Simulated ZS and ZL test circuit impedances.

MHz



225

9.7 + j31.5

31.7 + j29.3

Fig 2.

Definition of transistor impedance

001aaf059

drain

gate

BLF571 Datasheet(PDF) 4 Page - Ampleon Netherlands B.V.