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THERMAL FUSE RESISTORS, 1/2W to 60W PERMANENT OR REPLACEABLE FUSE
5 R TF D 5% C R 0 1
RESISTORS CAPACITORS COILS DELAY LINES
3 TFV RCD 5 % 100
TF SERIES
RoHS
Term.W is RoHS compliant & 260C compatible
RCD T 100 F05A 5%
Meets UL, FCC, REA, and EIA requirements Fusing-to-operating current ratio as low as 1.25:1! Fusing times can be custom tailored Precision tolerance to 0.1%, TC's to 5ppm available Available on exclusive SWIFT TM delivery program OPTIONS Option X: Low inductance design Option P: high pulse design (consult factory for assistance) Option A: ceramic case with standoffs (standard on TFV) Customized fuse time/temp, Hi-rel screening & burn-in, increased V & W, aluminum-housed heat sink design, etc. TF Series
1.0 [25.4] Min
RCD's TF Series construction consists of a thermal fuse welded in series with a resistor element. The assembly is potted inside a ceramic case (model TFR fuse is mounted externally in order to provide field-replaceability of the fuse). Under overload conditions, the thermal fuse "senses" the temperature rise of the resistor element and opens upon reaching a predetermined temperature. Devices can be custom tailored to specific fault conditions and do not require the large power overloads necessary with other fuse resistors to achieve proper fusing. Thus, the TF Series offers great safety, since high temperatures are not involved to achieve fusing. Typical applications include telecom line cards, repeaters, trunk carrier systems, RFI suppression, power supply, medical, and automotive circuits.
--
TFV Series
L
B
TFR Series
2.45" Max
L
E
B
C
--
C
Fuse is soldered between the resistor and metal mounting bracket, therefore easily replaceable in field
.032".004
.400"
SCHEMATIC
(standoffs apply to Opt.A only, not avail on TF02)
D
.200 .08 [5.082]
.033" .150 [3.8] min. max.
.41"
.20" .20"
.125" min.
.045" dia. .032x.08" (3PL)
.41"
TFR5 Mounting Layout
RCD Type1 TF01S TF01 TF02 TF04 TF05 TF07 TFV2 TFV3 TFV5 TFV7 TFR5
1
Wattage @ 25C2 1W 1W 2W 4W 5W 7W 2W 3W 5W 7W 5W
Min/Max Fusing R an g e3 3W to 100W 5W to 100W 7W to 200W 10W to 400W 15W to 500W 20W to 700W 4W to 200W 6W to 300W 8W to 500W 12W to 700W 7W to 500W
Voltage Rating4 40V 50V 100V 150V 200V 250V 100V 150V 200V 250V 200V
Resistance Range (Std.)5 .05 to 1K .05 to 4K .05 to 10K .05 to 25K .05 to 40K .05 to 60K .05 to 10K .05 to 20K .05 to 25K .05 to 40K .05 to 40K
L.032 [.81] .70 [17.8] .88 [22.4] .95 [24.1] 1.39 [35.3] 1.88 [47.8] 1.88 [47.8] .435 [11.0] .515 [13.0] .500 [12.7] .500 [12.7]
B.032 [.81]
C.032 [.81]
D6.032 [.81] .06 [1.5] .06 [1.5] N/A .12 [3.0] .12 [3.0] .12 [3.0] N/A N/A N/A N/A
.26 [6.6] .26 [6.6] .31 [7.9] .31 [7.9] .28 [7.1] .28 [7.1] .38 [9.7] .35 [8.9] .38 [9.7] .38 [9.7] .50 [12.7] .50 [12.7] .30 [7.6] .80 [20.3] .40 [10] 1.00 [25.4] .40 [10] 1.52 [38.6] .40 [10] 2.02 [51.3] See illustration above
Other sizes available from 1/2W to 60W. 2 Wattage rating based on 167C fuse, deduct 24% for 133C and 40% for 110C. 3 Expanded range available 4 Maximum resistor working voltage determined by E = ( PR)1/2, E not exceed value listed 5 Resistance range from .005 to 1M available. 6 Opt.A standoffs are avalable on TF1/2 - TF07 (not available on TF02)
SPECIFICATIONS (133C fuse design)
Tolerance Temperature Coefficient Dielectric Strength Insulation Resistance Operating Temp. Range Derating Fuse Rating (5C) Standard FuseTime: TFV Series shall fuse within 30S at 20x rated power, TF and TFR shall fuse within 30S@30x rated W. Refer to chart for approx. fuse curves (custom fusing available). 0.1% to 10% available 100ppm standard, T.C.'s to 5ppm/ avail. 500 VAC 10,000 megohms min. (dry) -55 to +120C ( up to 225C avail.) 1%/C above 20C Standard = 133C 2A 250V. Other popular models are 110C, 167,C and 187C (72C to +240C available, 0.5A to 25A)
100W
P/N DESIGNATION:
RCD Type Options: X, P, A (leave blank if standard)
TFV3
- 102 - J B
W
Optional Fuse: "110C"= 110C, "167C"=167C, "187C"=187C, etc. Leave blank for standard 133C Resis. Code 1% & tighter tols: 3 signif. digits & multiplier, e.g. R100= 0.1, 1R00= 1,1000= 100, 1001= 1K. 2%- 5%: 2digits &multiplier R10= .1, 1R0=1,100=10, 102=1K Tolerance: J=5%, G=2%, F=1%, D=.5%, C=.25%, B=.1% Packaging: B = Bulk (standard) Optional TC: 5= 5ppm, 10 = 10ppm, 20 = 20ppm, 30 = 30ppm, 50 = 50ppm (leave blank if std) Termination: W = Lead-free, Q = Tin/Lead (leave blank if either is acceptable)
Power (Watts)
50W 30W 10W 3W
TF04 TFR5 TF02, TFV5 TFV3 TFV2
10
20 30 50 100 200 300 500
Approx. Fusing Time (Seconds)
If a custom model is required, please advise the continuous wattage rating, ambient temperature, fusing wattage or current, min/max blow time, resistance value & tolerance, maximum size, pulse voltage & waveform, and a general description of the application.
RCD Components Inc, 520 E.Industrial Park Dr, Manchester, NH, USA 03109 rcdcomponents.com Tel: 603-669-0054 Fax: 603-669-5455 Email:sales@rcdcomponents.com
FA099B Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
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