NFR25, NFR25H
www.vishay.com
Vishay BCcomponents
Fusible, Non-Flammable Metal Film Leaded Resistors
FEATURES
Technology: metal film
Overload protection without risk of fire
Wide range of overload currents (refer Fusing
Characteristics graphs)
Lead (Pb)-free solder contacts
Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
Material categorization: for definitions of compliance
DESCRIPTION
please see www.vishay.com/doc?99912
A homogeneous film of metal alloy is deposited on a high
grade ceramic body. After a helical groove has been cut in
APPLICATIONS
the resistive layer, tinned connecting wires of electrolytic
Audio
copper are welded to the end-caps. The resistors are coated
with a gray, flame retardant lacquer which provides
Video
electrical, mechanical, and climatic protection. The
encapsulant is resistant to all cleaning solvents in
accordance with IEC 60068-2-45.
TECHNICAL SPECIFICATIONS
DESCRIPTION NFR25 NFR25H
(1)
Resistance range 0.22 to 15 k 0.22 to 15 k
Resistance tolerance 5 % 5 %
Resistance series E24 E24
Rated dissipation P 0.33 W 0.5 W
70
Thermal resistance (R ) 240 K/W 150 K/W
th
Temperature coefficient
0.22 R 4.7 200 ppm/K 200 ppm/K
4.7 R 15 200 ppm/K 100 ppm/K
15 R 15 k 100 ppm/K 100 ppm/K
Operating voltage, U DC or RMS 250 V 350 V
max.
Basic specifications IEC 60 115-1 IEC 60 115-1
Climatic category (IEC 60068-1) 55/155/56 55/155/56
Maximum resistance change for resistance range,
R max., after:
Load (1000 h, P ): (1 % R + 0.05 (1 % R + 0.05
70
Long term damp heat test (56 days): (1 % R + 0.05 (1 % R + 0.05
Soldering (260 C, 10 s): (0.25 % R + 0.05 (0.25 % R + 0.05
Notes
R value is measured with probe distance of 24 mm 1 mm using 4-terminal method
(1)
Ohmic values (other than resistance range) are available on request
Revison: 06-Sep-16 Document Number: 28737
1
For technical questions, contact: filmresistorsleaded@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
NFR25, NFR25H
www.vishay.com
Vishay BCcomponents
PACKAGING
AMMOPACK REEL
MODEL TAPING
PIECES CODE PIECES CODE
5000 A5
NFR25, NFR25H Axial, 52 mm 5000 R5
1000 A1
NFR25, NFR25H Radial 2000 N2 - -
DIMENSIONS
L
1
d
D
L
2
Outline
DIMENSIONS (Resistor types, mass, and relevant physical dimensions)
D L L d MASS
max. 1 max. 2 max.
TYPE
(mm) (mm) (mm) (mm) (mg)
NFR25
2.5 6.5 7.5 0.58 0.05 201
NFR25H
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: NFR2500002207JA100
N F R 25 0 00 0 2 2 0 7 J A 1 00
(1)
MODEL/SIZE VARIANT TCR/MATERIAL VALUE TOLERANCE PACKAGING SPECIAL
NFR2500 0 = neutral 0 = standard 3 digit value J = 5 % N2 Up to 2 digits
NFR25H0 Z = value overload 1 digit multiplier A5 are used for
MULTIPLIER A1 all special
(special)
-3
7 = *10 R5 parts.
-2
8 = *10 00 = standard
-1
9 = *10
0
0 = *10
1
1 = *10
2
2 = *10
Product Description: NFR25 5 % A1 R22
NFR25 5 % A1 R22
(1)
MODEL / SIZE TOLERANCE PACKAGING RESISTANCE VALUE
NFR25 5 % N2 1K0 = 1 k
NFR25H A5 4R7 = 4.7
A1
R5
Notes
The PART NUMBER is shown to facilitate the introduction of the unified part numbering system
(1)
Please refer to table PACKAGING, see next page
Revison: 06-Sep-16 Document Number: 28737
2
For technical questions, contact: filmresistorsleaded@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000