SERIES PPC, NPC
RESISTORS, TERMINATIONS
High Power Chip – 50 & 100 Ohms
GENERAL INFORMATION
When mounted on an appropriate heat sink, these chip devices
provide high power dissipation in terminations and as balancing
resistors in Wilkinson power divider networks. Laser trimming
provides maximum peak and average RF power capability.
ORDERING INFORMATION
EXAMPLE: Typical Model No.
PPC
or
NPC
Prefix
Tinning (see Note 4)
H = Sn96
T = Sn63
Size
Terminal type (X, W or G)
Ohmic Value (Note A)
NOTE A
Resistance value is expressed using military 4-digit call-out.
50R0 = 50 Ohms
1000 = 100 Ohms
Other values from 10–500 Ohms may be available as special order.
Contact factory for availability.
T
25-50
X
X
50R0 (See Note A Below)
or
1000
J
Physical Dimensions
TOP
VIEW
Tolerance Key
F = 1%
G = 2%
J = 5% (Standard)
W
B
B
50 Ohms
or
100 Ohms
TYPE X
T
L
B
B
GENERAL SPECIFICATIONS
Solderable Terminals
Substrate
Resistive Element
Electroplated Silver over Nickel (PPC)
Gold over Nickel alloy (NPC)
Beryllium Oxide Ceramic
Thin Film and Thick Film*
TYPE G
T
50 Ohms
ONLY
L
NOTES
1. The “L” and “T” dimensions are for the substrate only and do not include
terminal thickness or optional tinning thickness.
2. Thermal Resistance (R°) is measured in °C/W between resistive film and
mounting surface.
3. The CW power rating is based on maximum film temperature of +150°C and with
maximum heatsink temperature of +100°C. Power is based on infinite and ideal
heatsink. Type “W” termination style does not have full back plane metallization
and typically handles 1/10 the rated power.
4. Tinnning with Sn96 “Lead Free” high temperature solder will maintain RoHS
compliance.
0.005[0.13] MAX
B
B
50 Ohms
or
100 Ohms
TYPE W
(Note 3)
L
T
PERFORMANCE SPECIFICATIONS
W
Model
Prefix
*PPC 100-200A
*PPC 250-250A
*PPC 250-375A
NPC 25-50
*NPC 50-50
*NPC 50-100
NPC 75-150
in
0.100
0.250
0.250
0.025
0.050
0.050
0.075
[mm]
[2,5]
[6,4]
[6,4]
[0,64]
[1,27]
[1,27]
[1,91]
L
(Note 1)
in
[mm]
0.200
0.250
0.375
0.050
0.050
0.100
0.150
[5,1]
[6,4]
[9,53]
[1,27]
[1,27]
[2,5]
[3,8]
T
(Note 1)
in
[mm]
0.040
0.040
0.040
0.010
0.010
0.010
0.010
[1,02]
[1,02]
[1,02]
[0,25]
[0,25]
[0,25]
[0,25]
B
in
0.030
0.050
0.050
[mm]
[0,76]
[1,27]
[1,27]
Capacitance
(pF) Typical
0.8
1.2
3.5
0.3
0.5
1.0
1.8
RØ
°
C/W Max.
(Note 2)
0.80
0.30
0.15
3.90
1.90
0.72
0.29
C/W
Power
20W
40W
150W
3W
5W
10W
15W
Freq.
GHz (**)
DC-4.0
DC-2.5
DC-1.0
DC-12.4
DC-10
DC-4.0
DC-4.0
0.012 [0,305]
0.012 [0,305]
0.017
0.020
[0,43]
[0,51]
* Low cost thick film models available on these sizes. Consult factory for specifications.
** Typical VSWR for all terminations is 1.25:1
KEY:
Inches [Millimeters] .XX ±.03 .XXX ±.010 [.X ±0.8 .XX ±0.25]
300 Dino Drive, Ann Arbor, MI 48103
Tel: 888-244-6638 or 734-426-5553
•
Fax: 734-426-5557
www.aeroflex.com/inmet
•
inmetsales@aeroflex.com
REV 04/11
PCB Design
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