FRN Series
Fusing Resistors
Features:
•
•
•
•
•
•
Stackpole Electronics, Inc.
Resistive Product Solutions
Coating meets UL 94V-0
Flameproof – meets overload test of UL #1412
Designed for constant current to provide overload
protection
Consistent performance and reliability
Cut and formed product is available on select sizes, contact
factory for details
RoHS compliant / lead-free
Electrical Specifications
Type / Code
Power Rating (Watts) @
70ºC
Maximum Working
Voltage1
Maximum Working
Voltage
Resistance Temperature
Coefficient
Ohmic Range and Tolerance
5%
FRN 1/4
0.25W
200V
300V
400V
600V
600V
±350 ppm/ºC
±350 ppm/ºC
±350 ppm/ºC
±350 ppm/ºC
0.22Ω - 10KΩ
0.47Ω - 10KΩ
0.47Ω - 10KΩ
1Ω - 3KΩ
FRN 1/2
250V
0.5W
FRN 1
300V
1W
FRN 2
300V
2W
1
Lesser of
√PR
or maximum working voltage
Fusing Characteristics - Magnification of Power Rating
Type / Code
FRN 1/4
FRN 1/2
FRN 1
FRN 2
X25
0.22Ω - 0.91Ω
-
-
-
X15
1Ω - 4.7KΩ
2.4KΩ - 10KΩ
0.47Ω - 2Ω
1.1KΩ - 10KΩ
0.47Ω - 2Ω
1.1KΩ - 10KΩ
1Ω - 3.6Ω
1.1KΩ - 3KΩ
X12
5.1Ω - 2.2KΩ
2.2Ω - 1KΩ
30 Sec. Maximum
2.2Ω - 1KΩ
3.9Ω - 1KΩ
Fusing Time
How to Order
SEI Type
Code
Nominal
Resistance
Tolerance
Packaging
FRN
Type
FRN
1/2
Code Wattage
1/4
1/2
1
2
0.25W
0.5W
1W
2W
4.7
5%
5%
Tolerance
Values
E24
FRN 1/4
FRN 1/2, 1
FRN 2
ALL
ALL
5,000
2,500
1,000
1,000
1000
R
SEI Types Pkg Qty Description Code
Tape
Ammo
Bulk
R
T
A
Description
Fusing Metal Film
Rev Date: 9/30/2009
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
61
www.seielect.com
marketing@seielect.com
FRN Series
Fusing Resistors
Stackpole Electronics, Inc.
Resistive Product Solutions
Mechanical Specifications
Type / Code
FRN 1/4
FRN 1/2
FRN 1
FRN 2
A
Body Length
0.024 ± 0.01
6 ± 0.2
0.35 ± 0.02
9 ± 0.5
0.43 ± 0.02
11 ± 0.5
0.59 ± 0.04
15 ± 1
B
Body Diameter
0.09 ± 0.01
2.3 ± 0.2
0.11 ± 0.02
2.8 ± 0.5
0.16 ± 0.02
4 ± 0.5
0.22 ± 0.02
5.5 ± 0.5
C
Lead Length (Bulk)
1.1 ± 0.08
28 ± 2
1.1 ± 0.08
28 ± 2
1.1 ± 0.08
28 ± 2
1.38 ± 0.12
35 ± 3
D
Lead Diameter
0.022 ± 0.002
0.55 ± 0.05
0.028 ± 0.002
0.7 ± 0.05
0.028 ± 0.002
0.7 ± 0.05
0.031 ± 0.002
0.8 ± 0.05
Units
inches
mm
inches
mm
inches
mm
inches
mm
Performance Characteristics
Test
Moisture Resistance
Thermal Shock
Load Life @ 70ºC - 1,000hrs
Resistance to Soldering Heat
Short Time Overload
Operating Temperature Range: -40ºC to +155ºC
Test Results
±5%
±1%
±5%
±1%
±2%
Rev Date: 9/30/2009
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
62
www.seielect.com
marketing@seielect.com