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85F27R4

Description
Wirewound Resistors - Through Hole 5watt 27.4ohm 1% Axial
CategoryPassive components   
File Size291KB,2 Pages
ManufacturerOhmite
Websitehttps://www.ohmite.com
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85F27R4 Overview

Wirewound Resistors - Through Hole 5watt 27.4ohm 1% Axial

85F27R4 Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerOhmite
Product CategoryWirewound Resistors - Through Hole
RoHSN
Resistance27.4 Ohms
Power Rating5 W
Tolerance1 %
Temperature Coefficient20 PPM / C
Voltage Rating460 V
Operating Temperature Range+ 25 C to + 275 C
Diameter8.7 mm
Length23.8 mm
Termination StyleAxial
PackagingBulk
ProductPower Resistors Wirewound Silicone Coated
TechnologyWirewound
TypeWirewound Resistor
Mounting StylePCB Mount
Maximum Operating Temperature+ 275 C
Minimum Operating Temperature+ 25 C
Factory Pack Quantity10
Commercial Grade Acrasil
®
‚ Silicone-Ceramic
Conformal Axial Terminal Wirewound
1% Tolerance (5% available)
80 series
rW series
F e at u r e s
Military Grade 80 Series MIL-R-26 Qualified
Ohmite’s highest quality conformal axial terminal
silicone-ceramic coated resistors for applications
requiring high precision and stability. These resistors
have a low temperature coefficient and maintain a
high degree of stability under demanding conditions.
• Designed for precision power applications
• All-welded construction
• RW Series “Mil” value resistors marked with
“Mil” in accordance with MIL-R-26 specifica-
tions
s e r i e s s p e C i F i C at i o n s
Commercial Grade
81F
82
83F
83J
85F
85J
80F
80J
Military Grade
RW70U
RW79U
RW69V
RW74U
RW67V
RW78U
RW68V
Watts
1
2
3
5
10
Ohms
0.1-6K
0.1-8K
0.1-20K
0.1-75K
0.1-150K
Voltage
150
100
200
460
1000
Non-Inductive versions available. Insert “N” before tolerance code. Example: 83NF2K21
CharaCteristiCs
Coating
Silicone-ceramic
Core
Ceramic
Terminals
Solder-coated copper clad axial
Derating
Linearly from 100% @ +25°C to 0% @ +275°C.
Tolerance
±5% (J type), ±1% (F type) (other tolerances available)
Power rating
Based on 25°C free air rating
Maximum ohmic values
See chart
Overload
Under 5 watts: 5 times rated wattage for 5 seconds. 5 watts and over: 10 times
rated wattage for 5 seconds
Temperature coefficient
Under 1Ω; ±90 ppm/°C
1 to 9.99Ω: ±50 ppm/°C
10Ω and over; ±20 ppm/°C
Dielectric withstanding voltage
500 VAC: 1 watt rating; 1000 VAC: 2, 3, 5, 7, and 10 watt rating
Dimensions
(in./mm max.)
Watts
Length
0.406 / 10.3
0.437 / 11.1
Diam.
0.219 / 5.6
0.125 / 3.2
Lead gauge
20
24
1.5 in. /
38.1mm
L
D
85F
85J
80F
80J
83F
83J
82
81F
RW70U
RW79U
RW69V
3
5
10
2
1
0.593 / 15.1
0.937 / 23.8
1.842 / 46.8
0.218 / 5.5
0.343 / 8.7
0.406 /10.3
20
18
18
RW74U
RW67V
RW78U
RW68V
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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