Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704
www.riedon.com sales@riedon.com Revised: 201810_003© Riedon, Inc.
S & SL Series
Surface Mount Wirewound Resistors
Specication Value
Tolerances
S: greater than 100Ω, ±0.05% to ±5%
S : f r o m 1 Ω t o 1 0 0 Ω , ± 0 . 1 % t o ± 5 %
S: below 1Ω, ±1% to ±5%
SL: ±1% to ±5%
Temperature Coe󰀩cient
S: greater than 10W : ±20ppm/°C
S: from 1W to 10W : ±50ppm/°C
S: less than 1W : Call Factory
SL: ±200ppm/°C, For Lower Call Factory
Temperature Range -55°C to +275°C
Dielectric Strength S: 1000 VAC
SL: 500 VAC
Insulation Resistance >1000 MOhms / Dry
Terminal Finish 100% Electroless Tin (matte) over Copper
• Resistance: 0.005 to 50kOhms
• High Power: to 4 Watts
• Tolerance to ±0.05%
• High Temperature Rating up to 275°C
• Low Temperature Coe󰀩cient to ±20ppm/°C
• Superior Surge Handling Capability
• Non-Inductive Windings are Available (Type SN)
• Flame Resistant UL 94V-0
SPECIFICATIONS
Type Power Rating
Watts @ 70°C
Resistance
Range ( W )
Non-Inductive Winding
Resistance Range ( W )¹
Maximum
Working Voltage
S-1 0.5 0.01 to 400 0.1 to 200
*P R
S-2 1 0.005 to 3k 0.1 to 1.5K
S-4 2 0.01 to 15k 0.1 to 7.5K
S-3 3 0.01 to 25k 0.1 to 12.5K
S-5 40.01 to 50k 0.1 to 25K
SL-2 1 0.005 to 0.01 N/A 1
SL-4 2 0.005 to 0.07 N/A 1
050 100 150 200 250 300 350
0
20
40
60
80
100
120
Power ( % )
Ambient Temperature (°C)
Power Derating Curve
Environmental Performance
(MIL-STD 202) Δ R MAX
Dielectric ±0.5% + 0.05W
Load Life ±1.0% + 0.05W
Storage ±0.5% + 0.05W
Moisture Resistance ±1.0% + 0.05W
Thermal Shock ±0.5% + 0.05W
5X Overload ( 5s ) ±0.5% + 0.05W
Shock ±0.5% + 0.05W
Solder Heat Resistance ( 260C, 10s ) ±0.5% + 0.05W
Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704
www.riedon.com sales@riedon.com Revised: 201810_003© Riedon, Inc.
S & SL Series
Surface Mount Wirewound Resistors
SPECIFICATIONS
(continued)
Part Description: Part Type Resistance Tolerance TCR (if not standard)
Example: S-4 100 OHM 1%
For non-inductive windings (Resistance > 0.1Ω) insert the letter “N” (i.e. SN-4)
Type
Dimensions Stand-O󰀨 Footprint
A
±0.015”
[±0.4mm]
B
±0.015”
[±0.4mm]
C
±0.015”
[±0.4mm]
D
±0.015”
[±0.4mm]
F
±0.015”
[±0.4mm]
Lead Thick-
ness
±0.002”
[±0.05mm]
E
±0.015”
[±0.4mm]
Height
±0.005”
[±0.13mm]
W
±0.015”
[±0.4mm]
H
±0.015”
[±0.4mm]
L
±0.015”
[±0.4mm]
S-1 0.190 [4.8] 0.130 [3.3] 0.110 [2.8] 0.060 [1.5] 0.040 [1.0] 0.006 [0.15] 0.100 [2.5] 0.005 [0.13] 0.062 [1.6] 0.100 [2.5] 0.250 [6.4]
S-2 0.260 [6.6] 0.155 [3.9] 0.125 [3.2] 0.070 [1.8] 0.070 [1.8] 0.006 [0.15] 0.120 [3.0] 0.005 [0.13] 0.096 [2.4] 0.150 [3.8] 0.337 [8.6]
S-4 0.450 [11.4] 0.250 [6.4] 0.180 [4.6] 0.120 [3.0] 0.100 [2.5] 0.006 [0.15] 0.190 [4.8] 0.005 [0.13] 0.150 [3.8] 0.200 [5.1] 0.540 [13.7]
S-3 0.625 [15.9] 0.270 [6.9] 0.250 [6.4] 0.120 [3.0] 0.135 [3.4] 0.006 [0.15] 0.150 [3.8] 0.005 [0.13] 0.200 [5.1] 0.220 [5.6] 0.700 [17.8]
S-5 0.820 [20.8] 0.295 [7.5] 0.305 [7.7] 0.150 [3.8] 0.190 [4.8] 0.006 [0.15] 0.245 [6.2] 0.005 [0.13] 0.220 [5.6] 0.250 [6.4] 0.900 [22.9]
SL-2 0.260 [6.6] 0.155 [3.9] 0.100 [2.5] 0.070 [1.8] 0.070 [1.8] 0.006 [0.15] 0.120 [3.0] 0.005 [0.13] 0.096 [2.4] 0.150 [3.8] 0.337 [8.6]
SL-4 0.450 [11.4] 0.250 [6.4] 0.100 [2.5] 0.120 [3.0] 0.100 [2.5] 0.006 [0.15] 0.190 [4.8] 0.005 [0.13] 0.150 [3.8] 0.200 [5.1] 0.540 [13.7]
Ordering Information
Standard Package Quantities
S-1 S-2 S-4 S-3 S-5 SL-2 SL-4
Small Reel 650 600 250 125 180 600 250
Large Reel 3000 2000 1000 500 500 2000 1000
Reel/Tape Width 12mm 16mm 24mm 24mm 32mm 16mm 24mm
Approximate Unit
Mass for shipping 0.11g 0.21g 0.71g 1.5g 2.8g 0.12g 0.36g
Surface Mount Humidity Packaging:
Per Riedon Customer Change Notice dated August 8, 2018 (CCN1832) all Riedon Surface Mount wirewound
resistors now have a Moisture Sensitivity Level (MSL) rating of 1. Surface Mount parts are packaged in a Moisture
Barrier Bag (MBB) with a Humidity Indicator Card and desiccant to ensure solderability. The MBB is marked with a
Moisture-Sensitive Identication Label.
1 Below 0.1Ω the inductance of a single winding, or the metal element (SL) is negligible