MODELS 898, 899
R/2R Ladder
Dual-In-Line
Thick Film
Resistor Networks
ELECTRICAL
Standard Resistance Range, Ohms
Standard Resistance Tolerance, at 25°C
Operating Temperature Range
Temperature Coefficient of Resistance
Maximum Operating Voltage
Insulation Resistance
Ladder Network Accuracy
1K to 500K
±2%
-40°C to +70°C
±100ppm/°C
100Vdc or √PR
≥10,000 Megohms
8 Bits: ±1/2LSB, -40°C to +70°C
10 Bits: ±1LSB, -40°C to +70°C
MECHANICAL
Lead Material
Substrate Material
Resistor Material
Copper Alloy, 60/40 Tin-Lead Plating
Alumina
Cermet
APPLICABLE DOCUMENTS
MIL-R-83401 — Resistor Networks, Fixed, Film, General Specifications
MIL-STD-202 — Test Methods for Electronic and Electrical Component Parts
MIL-STD-105 — Sampling Procedures and Tables for Inspection by Attributes
Specifications subject to change without notice.
4-157
Models 898, 899 Ladder
4
OUTLINE DIMENSIONS (Inch/mm)
.880
Max.
22.4
Model 898
.780
Max.
19.8
Model 899
.250
Ref.
6.35
.340±.020
8.64±0.51
.125
Max.
3.18
.060
Ref.
1.52
.050
Ref.
1.27
.020
Min.
0.51
.100 ± .010*
2.54 ± 0.25
.018 ± .003
0.46 ± 0.08
.600 ± .010
15.2 ± 0.25
.700 ± .010
17.8 ± 0.25
.080 ± .020
2.03 ± 0.51
.185
Max.
4.70
.135 ± .030
3.43 ± 0.76
*Typical spacing
non-accumulating
SCHEMATICS
898-81 Circuit
8 Bits, 16 Leads
898-82 Circuit
8 Bits, 16 Leads
16
16
R
R
R
R
2R 2R 2R 2R
2R
R
R
R
2R
2R
2R 2R
R
R
R
R
2R 2R 2R 2R
2R
R
R
R
2R
2R
2R 2R
1
1
899-10 Circuit
10 Bits, 14 Leads
14
2R
2R
2R
R
R
R
R
R
2R
2R
2R
2R
2R
R
R
R
2R
R
2R
2R
1
Note: Custom configurations are available. Consult factory.
4-158
Models 898, 899 Ladder
POWER DISSIPATION, WATTS AT 70°C
STANDARD RESISTANCE VALUES, OHMS
R/2R
10K/20K
R/2R
25K/50K
50K/100K
Model
898-8X
899-10
R/2R
100K/200K
Per Package
0.8
1.0
Per Resistor
.050
.050
TYPICAL PART MARKING
898-81-R10K
Lead #1
Indicator
Date Code
Optional Location
R Resistance Value
Model Number:
899 = 14 Leads
898 = 16 Leads
Circuit Type: –10 (10 bits)
–81 ( 8 bits)
–82 ( 8 bits)
4
PACKAGING
Standard:
Magazines
All Units oriented with lead #1 to the same side.
Magazine:
Material
Capacity
=
=
Antistatic Plastic
25 Units
ORDERING INFORMATION
89 8 -81 R10K
Model Series
R Resistance Value
Number of Leads:
8 = 16 Leads
Circuit Type:
81 = 8 Bits
82 = 8 Bits
89 9 -10 R10K
Model Series
R Resistance Value
Number of Leads:
9 = 14 Leads
Circuit Type:
10 = 10 Bits
4-159
Models 898, 899 Ladder