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Número de pieza BLF644P
Descripción Broadband power LDMOS transistor
Fabricantes NXP Semiconductors 
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BLF644P
Broadband power LDMOS transistor
Rev. 2 — 27 June 2014
Product data sheet
1. Product profile
1.1 General description
A 70 W LDMOS RF power transistor for broadcast transmitter, communications and
industrial applications. The transistor is suitable for the frequency range HF to 1300 MHz.
The excellent ruggedness and broadband performance of this device makes it ideal for
digital applications.
Table 1. Typical performance
RF performance at Tcase = 25 C in a common source test circuit.
Test signal
f
VDS
PL
(MHz)
(V) (W)
CW, class-A
860 32 100
CW pulsed, class-AB
860 32 100
2-tone, class-AB
860 32 45
860 32 30
Gp
(dB)
23
23.5
23
24
D IMD
(%) (dBc)
65 -
66 -
50 25
40 35
1.2 Features and benefits
Integrated ESD protection
Excellent ruggedness
High power gain
High efficiency
Excellent reliability
Easy power control
Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances
(RoHS)
1.3 Applications
Communication transmitter applications in the HF to 1300 MHz frequency range
Industrial applications in the HF to 1300 MHz frequency range
Broadcast transmitters

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BLF644P pdf
NXP Semiconductors
BLF644P
Broadband power LDMOS transistor
Table 9. List of components
See Figure 1 and Figure 2.
Component Description
Value
C1 multilayer ceramic chip capacitor 22 pF
C2 multilayer ceramic chip capacitor 8.2 pF
C3 multilayer ceramic chip capacitor 62 pF
C4, C5
multilayer ceramic chip capacitor 51 pF
C6, C7,
C14, C15
multilayer ceramic chip capacitor 4.7 F, 50 V
C8 multilayer ceramic chip capacitor 12 pF
C9 multilayer ceramic chip capacitor 5.1 pF
C10 multilayer ceramic chip capacitor 9.1 pF
C11 multilayer ceramic chip capacitor 75 pF
C12, C13 multilayer ceramic chip capacitor 62 pF
C16, C17 multilayer ceramic chip capacitor 100 pF
C18, C19 electrolytic capacitor
470 F, 63 V
L1 microstrip
-
L2, L3
microstrip
-
L4, L5
microstrip
-
L6, L7
microstrip
-
L8, L9
microstrip
-
L10, L11 microstrip
-
L12, L13 microstrip
-
L14 microstrip
-
R1, R2
multilayer ceramic chip capacitor 5.6
R3, R4
multilayer ceramic chip capacitor 100
R5, R6
multilayer ceramic chip capacitor 30
T1, T2
Semi-rigid coaxial cable
25 , 61 mm
Remarks
[1]
[1]
[1]
[1]
[2]
[2]
[2]
[2]
[2]
[1]
(L W) 4 mm 1.7 mm
(L W) 8 mm 2 mm
(L W) 8 mm 4 mm
(L W) 7.4 mm 6 mm
(L W) 11.1 mm 11.6 mm
(L W) 8.6 mm 4.9 mm
(L W) 3 mm 2.7 mm
(L W) 4 mm 1.7 mm
SMD 1206
SMD 1206
UT-90C-25
[1] American Technical Ceramics type 800A or capacitor of same quality.
[2] American Technical Ceramics type 800B or capacitor of same quality.
BLF644P
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 27 June 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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BLF644P arduino
NXP Semiconductors
BLF644P
Broadband power LDMOS transistor
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific NXP Semiconductors product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. NXP
Semiconductors accepts no liability for inclusion and/or use of
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without NXP Semiconductors’ warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
NXP Semiconductors’ specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies NXP Semiconductors for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond NXP Semiconductors’
standard warranty and NXP Semiconductors’ product specifications.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
12.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
13. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
BLF644P
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 27 June 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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