FRN Series
Fusing Resistor
Features:
•
•
•
•
•
•
•
Stackpole Electronics, Inc.
Resistive Product Solutions
Coating meets UL 94V-0
Designed for constant current to provide overload protection
Consistent performance and reliability
Cut and formed product is available on select sizes, contact Stackpole for details
100% RoHS compliant and lead free without exemption
Halogen free
REACH compliant
Electrical Specifications
Type / Code
FRN16
FRN14
FRN12
FRN1
FRN2
Power Rating (W)
@ 70ºC
0.166
0.25
0.5
1
2
Maximum Working
Voltage (V)
(1)
150
200
250
300
300
Maximum Overload
Voltage (V)
200
300
400
600
600
TCR (ppm/ºC)
± 350
± 350
± 350
± 350
± 350
Ohmic Range (Ω) and Tolerance
5%
0.56 - 10K
0.22 - 10K
0.47 - 10K
0.47 - 10K
1 - 3K
(1) Lesser of
√ P*R
or maximum working voltage
Mechanical Specifications
Type / Code
FRN16
FRN14
FRN12
FRN1
FRN2
A
Body Length
0.126 +0.008 / -0
3.20 +0.20 / -0
0.236 ± 0.020
6.00 ± 0.50
0.354 ± 0.039
9.00 ± 1.00
0.433 ± 0.039
11.00 ± 1.00
0.591 ± 0.039
15.00 ± 1.00
B
Body Diameter
0.073 ± 0.006
1.85 ± 0.15
0.091 ± 0.008
2.30 ± 0.20
0.118 ± 0.020
3.00 ± 0.50
0.157 ± 0.020
4.00 ± 0.50
0.217 ± 0.039
5.50 ± 1.00
C
Lead Length (Bulk)
1.102 ± 0.118
28.00 ± 3.00
1.102 ± 0.118
28.00 ± 3.00
1.102 ± 0.118
28.00 ± 3.00
1.102 ± 0.118
28.00 ± 3.00
1.378 ± 0.118
35.00 ± 3.00
D
Lead Diameter
0.018 ± 0.002
0.45 ± 0.05
0.022 ± 0.002
0.55 ± 0.05
0.028 ± 0.002
0.70 ± 0.05
0.031 ± 0.002
0.80 ± 0.05
0.031 ± 0.002
0.80 ± 0.05
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Performance Characteristics
Test
Moisture Resistance
Thermal Shock
Load Life @ 70ºC - 1000 hours
Resistance to Soldering Heat
Short Time Overload
Operating temperature range is -40ºC to +155ºC
Test Result
± 5%
± 1%
± 5%
± 1%
± 2%
Rev Date: 10/22/2020
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
1
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FRN Series
Fusing Resistor
Power Derating Curve:
Stackpole Electronics, Inc.
Resistive Product Solutions
Fusing Curves
Magnification of Power Rating
Magnification of Power Rating
Magnification of Power Rating
Magnification of Power Rating
Rev Date: 10/22/2020
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
2
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marketing@seielect.com
FRN Series
Fusing Resistor
Repetitive Pulse Information
Stackpole Electronics, Inc.
Resistive Product Solutions
If repetitive pulses are applied to resistors, pulse wave form must be less than “Pulse limiting voltage”, “Pulse limiting
current” or “Pulse limiting wattage” calculated by the formula below.
Vp =
K√P x R x T/t
lp =
K√P/R x T/t
Pp = K
2
x P x T/t
Where: Vp:
lp:
Pp:
P:
R:
T:
t:
K:
[Vr:
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Pulse limiting voltage (V)
Pulse limiting current (A)
Pulse limiting wattage (W)
Power rating (W)
Nominal resistance (ohm)
Repetitive period (sec)
Pulse duration (sec)
Coefficient: 0.6
Rated Voltage (V), Ir: Rated Current (A)]
If T >
10 → T = 10 (sec), T/t
>
1000 → T/t
= 1000.
If T > 10 and T/t >
1000, “Pulse Limiting power (Single pulse) is applied.
If Vp < Vr (lp < lr or Pp < P), Vr (lr, P) is Vp (lp, Pp).
Pulse limiting voltage (Current, Wattage) is applied at less than rated ambient temperature. If ambient
temperature is more than the rated temperature (70°C),
please decrease power rating according to “Power
Derating Curve”.
Please assure sufficient
margin for use period and conditions for “Pulse limiting voltage”.
If the pulse waveform is not square wave, please judge after transform the waveform into square wave
according to “Waveform Transformation to Square Wave”
information.
Rev Date: 10/22/2020
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
3
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marketing@seielect.com
FRN Series
Fusing Resistor
Waveform Transformation to Square Wave
1.
Discharge curve wave with time constant “t”
→
Square wave
Stackpole Electronics, Inc.
Resistive Product Solutions
2.
Damping oscillation wave with time constant of envelope “t”
→
Square wave
3.
Half-wave rectification wave
→
Square wave
4.
Triangular wave
→
Square wave
5.
Special wave
→
Square wave
Rev Date: 10/22/2020
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
4
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marketing@seielect.com
FRN Series
Fusing Resistor
Recommended Solder Profile
Stackpole Electronics, Inc.
Resistive Product Solutions
This information is intended as a reference for solder profiles for Stackpole resistive components. These profiles should
be compatible with most soldering processes. These are only recommendations. Actual numbers will depend on board
density, geometry, packages used, etc., especially those cells labeled with “*”.
100% Matte Tin / RoHS Compliant Terminations
Soldering iron recommended temperatures: 330°C to 350°C with minimum duration.
Maximum number of reflow cycles: 3.
Wave Soldering
Description
Maximum
Recommended
Minimum
60 seconds
100°C
240°C
*
N/A
Preheat Time
80 seconds
70 seconds
Temperature Diff.
140°C
120°C
Solder Temp.
260°C
250°C
Dwell Time at Max.
10 seconds
5 seconds
Ramp DN (°C/sec)
N/A
N/A
Temperature Diff. = Defference between final preheat stage and soldering stage.
Convection IR Reflow
Description
Ramp Up (°C/sec)
Dwell Time > 217°C
Solder Temp.
Dwell Time at Max.
Ramp DN (°C/sec)
Maximum
3°C/sec
150 seconds
260°C
30 seconds
6°C/sec
Recommended
2°C/sec
90 seconds
245°C
15 seconds
3°C/sec
Minimum
*
60 seconds
*
10 seconds
*
Recommended Lead Free Resistor Reflow Profile
Rev Date: 10/22/2020
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
5
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marketing@seielect.com
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