FR1P-R100-KB Datasheet, PDF (1/1 Pages) RCD COMPONENTS INC. – FAILSAFE FUSE RESISTORS 1/2 WATT to 50 WATT

FAILSAFE FUSE RESISTORS
1/2 WATT to 50 WATT
FR SERIES
RoHS
Term.W is
RoHS
compliant
& 260°C
compatible
Precision performance, flameproof design per UL94V-0
Fusing-to-Operating current ratios as low as 3:1!
Fusing times available from 1 millisecond to 30 seconds
Available on exclusive SWIFT^TM delivery program
Custom design available for increased surge capability
(specify Option P)
Also available: Hi-Rel screening, burn-in, custom marking, etc.
|← L →|
↓
|← 1.0” [25.4] min.→|
↑
↓^d
↑
D
SPECIFICATIONS
RCD Wattage Resistance
Type* @25°C(W₂₅) Range
L ±.04 [1] D±.02 [.5]
d typ
FR1/2 0.5 .06Ω to 500Ω .29 [7.4] .125 [3.2] .020 [.5]
FR1
1.0 0.1Ω to 1.5K .60 [15.2] .130 [3.3] .020 [.5]
FR2
2.0
0.1Ω to 2K .69 [17.5] .170 [4.3] .032 [.8]
FR3
3.5
0.1Ω to 3K .58 [14.7] .230 [5.8] .032 [.8]
FR5
5.5
0.1Ω to 5K .984 [25] .323 [8.2] .032 [.8]
* Other sizes available up to 50 Watt on a custom basis.
RESISTORS CAPACITORS COILS DELAY LINES
RCD
Precision Grade Fuse Resistors!
RCD’s FR Series was designed to obtain the best from two devices. It
combines the performance of a precision grade resistor with precisely
controlled fusing characteristics. Typical applications include protection
for zener diodes and other semiconductor components, emitter
resistors for current sharing transistors, Squib circuits, and/or other
circuits that require precision fusing chracteristics unobtainable with
traditional fuses.
Please note that due to the inherent compromise involved between
resistive vs. fusing performance it is recommended that prior consulta-
tion be made with RCD’s engineering department to obtain the optimum
design. Parts intended for high-reliability applications are available
with burn-in (opt. ER) and/or military screening.
PERFORMANCE CHARACTERISTICS
Tolerance
Temperature
Coefficient (typ)
Dielectric Strength
5% standard, 0.1-10% available
±100ppm 0.1-.9Ω, ±50ppm 1Ω &up,
available to ±10ppm
750 VAC
Insulation Resistance
1,000 megohms min. (dry)
Derating
Derate linearly from full rated power @
25°C to zero power @175°C (.67%/°C)
FUSING CHARACTERISTICS: Standard FR resistors are designed to fuse within 10 seconds as follows:
FR1/2 to FR2 ≥1Ω = 20 x W₂₅ (20 times the 25°C wattage rating), <1Ω = 40 x W_25. FR3 & FR5 ≥5Ω = 25 x W₂₅ , <5Ω = 50 x W_25.
Faster fusing is available. Max. fault condition not to exceed 300x W₂₅. Following chart depicts custom design capabilities.
Fusing
Current
(Amperes)
Minimum Resistance Value to Fuse in 1 Sec. or Less
FR1/2
FR1
FR2
FR3
FR5
Minimum Resistance Value to Fuse in 5 Sec. or Less
FR1/2
FR1
FR2
FR3
FR5
0.15
360Ω
720Ω
1.44K
2.88K
5.76K
180Ω
360Ω
720Ω
1.44K
2.88K
0.25
120Ω
240Ω
480Ω
960Ω
1920Ω
60Ω
120Ω
240Ω
480Ω
960Ω
0.5
30Ω
60Ω
120Ω
240Ω
480Ω
15Ω
30Ω
60Ω
120Ω
240Ω
1.0
7.5Ω
15Ω
30Ω
60Ω
120Ω
3.8Ω
7.5Ω
15Ω
30Ω
60Ω
1.5
3.3Ω
7Ω
13Ω
26Ω
53Ω
1.7Ω
3.3Ω
7Ω
13Ω
26Ω
2.0
2.0Ω
4Ω
8Ω
16Ω
32Ω
1.0Ω
2Ω
4Ω
8Ω
16Ω
3.0
1.0Ω
2Ω
4Ω
8Ω
16Ω
0.5Ω
1Ω
2Ω
4Ω
8Ω
5.0
0.5Ω
1Ω
2Ω
4Ω
8Ω
.25Ω
.5Ω
1Ω
2Ω
4Ω
10
0.25Ω
.5Ω
1Ω
2Ω
4Ω
.13Ω
.25Ω
.5Ω
1Ω
2Ω
15
0.15Ω
.3Ω
.6Ω
1.2Ω
2.4Ω
.08Ω
.15Ω
.3Ω
.6Ω
1.2Ω
20
0.1Ω
.2Ω
.4Ω
.8Ω
1.6Ω
.06Ω
.10Ω
.2Ω
.4Ω
.8Ω
APPLICATION & DESIGN NOTES:
P/N DESIGNATION:
1. Fusing current should be ≥ 4 times the continuous current for best performance.
FR1
- 101 - J B W
2. Resistors reach elevated temperatures prior to opening- elevate body above the PCB. _{RCD Type}
3. Exercise care when testing fuse resistors.
4. RCD can custom manufacture fuse resistors from 1/8W to 50W per customer req’t.
Design objectives are achieved by element material (wirewound or film), insulation
(silicone, ceramic, epoxy), and process (alloy & resistor geometry).
5. Thermal fuses are also available and are designed to “blow” when the resistor body or
Options: P, ER (additional options to
be assigned by RCD, leave blank if std)
Resis. Code: ≤1%: 3 signif. figures & multiplier,
e.g. R100= 0.1Ω, 1R00= 1Ω,1000= 100Ω, 1001= 1KΩ.
Resis. Code 2% - 10%: 2 signif. figures & multiplier,
the ambient temperature reaches preset temperature (110°C to 240°C).
e.g. R10= 0.1Ω, 1R0= 1Ω,100= 10Ω, 102= 1KΩ.
6. Custom surge-tolerant fuses are designed not to “blow” due to short term voltage
transients, lightning surges, or capacitor discharges, but will fuse under longer term
overloads. Consult factory for details.
7. Please include the following information when customized design is required:
Tolerance: K=10%, J=5% (std), H=3%, G=2%,
F=1%, D=0.5%, C=0.25%, B=0.1%
Packaging: B= Bulk, T= T&R
Continuous wattage or current; ambient temperature; fusing wattage or current;
Optional Temp. Coef: (leave blank if standard)
minimum and maximum “blow” times; resistance value & tolerance; max. size; voltage ^{10 = 10ppm, 25 = 25ppm, 50 = 50ppm, 101=100pm}
level, AC or DC, wave form, & frequency; and a general description of the application. Termination: W= Lead-free, Q= Tin/Lead
Include info as to any pulse or overload conditions that the resistor must withstand.
(leave blank if either is acceptable)
RCD Components Inc, 520 E.Industrial Park Dr, Manchester, NH, USA 03109 rcdcomponents.com Tel: [phone] Fax: [phone] Email:[e-mail]
FA062A Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
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