MRF544 Microsemi Power Products Group, MRF544 Datasheet - Page 3

• Manufacturer Part Number: MRF544
• Description: TRANS NPN 70V 400MA TO-39
• Manufacturer: Microsemi Power Products Group

Specifications of MRF544

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (max): 70V
• Frequency - Transition: 1.5GHz
• Gain: 13.5dB
• Power - Max: 3.5W
• Dc Current Gain (hfe) (min) @ Ic, Vce: 15 @ 50mA, 6V
• Current - Collector (ic) (max): 400mA
• Mounting Type: Through Hole
• Package / Case: TO-39
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Noise Figure (db Typ @ F): -
• Other names: MRF544MI; MRF544MI

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FUNCTIONAL
G
(MHz)
Symbol
1000
|S
f
100
200
300
400
500
600
700
800
900
MAG
U max
21
|
2
0.221
0.219
0.250
0.329
0.338
0.348
0.371
0.374
0.402
0.438
|S11|
Maximum Unilateral Gain
Maximum Available Gain
Insertion Gain
Table 1. Common Emitter S-Parameters, @ VCE = 25 V, IC = 50 mA
S11
-143
-108
-170
-126
140
-72
-34
51
94
9
∠ φ
Test Conditions
8.54
4.36
2.98
2.39
2.11
1.83
1.61
1.44
1.45
1.56
|S21|
IC = 50 mAdc, VCE = 25Vdc,
f = 200 MHz
IC = 50 mAdc, VCE = 25Vdc,
f = 200 MHz
IC = 50 mAdc, VCE = 25Vdc,
f = 200 MHz
S21
97
87
79
72
70
65
61
59
63
64
∠ φ
0.047
0.091
0.141
0.178
0.237
0.292
0.383
0.428
0.503
0.35
|S12|
Min.
11.7
S12
-
-
82
87
87
84
87
86
86
85
88
86
∠ φ
Value
Typ.
13.5
13.5
12.7
MRF544
0.508
0.413
0.406
0.445
0.409
0.412
0.411
0.413
0.386
0.405
Max.
|S22|
-
-
-
S22
Unit
-147
-112
108
140
176
dB
dB
dB
-78
-42
14
49
82
∠ φ