Datasheet

ManualsBrandsBOURNS ManualsFusesPTC fuse Current I(H) 1.6 A 72 V (L x W x H) 27.54 x 13.94 x 3.1 mm 1 pc(s)

Features

■ 72 V rated

■ Radial leaded devices

■ Cured, ﬂ ame retardant epoxy polymer

insulating material meets UL 94 V-0

requirements

■ RoHS compliant*

■ Agency recognition:

Applications

Almost anywhere there is a low voltage power

supply, up to 72 V and a load to be protected,

including:

■ Security and ﬁ re alarm systems

■ Loudspeakers

■ Power transformers

MF-RX/72 Series - PTC Resettable Fuses

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Speciﬁ cations are subject to change without notice.

Customers should verify actual device performance in their speciﬁ c applications.

Electrical Characteristics

Model

V max.

Volts

I max.

Amps

hold

trip

Initial

Resistance

1 Hour (R

)

Post-Trip

Resistance

Max. Time

To Trip

Tripped

Power

Dissipation

Amperes

at 23 °C

Ohms

at 23 °C

Ohms

at 23 °C

Amperes

at 23 °C

Seconds

at 23 °C

Watts

at 23 °C

Hold Trip Min. Max. Max. Typ.

MF-RX020/72 72 40 0.20 0.40 1.50 2.84 4.40 1.0 2.2 0.40

MF-RX025/72 72 40 0.25 0.50 1.00 1.95 3.00 1.25 2.5 0.45

MF-RX030/72 72 40 0.30 0.60 0.76 1.36 2.10 1.5 3.0 0.50

MF-RX040/72 72 40 0.40 0.80 0.52 0.86 1.29 2.0 3.9 0.55

MF-RX050/72 72 40 0.50 1.00 0.41 0.77 1.17 2.5 4.0 0.75

MF-RX065/72 72 40 0.65 1.30 0.27 0.48 0.72 3.25 5.3 0.90

MF-RX075/72 72 40 0.75 1.50 0.18 0.40 0.60 3.75 6.3 0.90

MF-RX090/72 72 40 0.90 1.80 0.14 0.31 0.47 4.5 7.2 1.00

MF-RX110/72 72 40 1.10 2.20 0.15 0.25 0.38 5.5 8.2 1.50

MF-RX135/72 72 40 1.35 2.70 0.12 0.19 0.30 6.75 9.6 1.70

MF-RX160/72 72 40 1.60 3.20 0.09 0.14 0.22 8.0 11.4 1.90

MF-RX185/72 72 40 1.85 3.70 0.08 0.12 0.19 9.25 12.6 2.10

MF-RX250/72 72 40 2.50 5.00 0.05 0.08 0.13 12.5 15.6 2.50

MF-RX300/72 72 40 3.00 6.00 0.04 0.06 0.10 15.0 19.8 2.80

MF-RX375/72 72 40 3.75 7.50 0.03 0.05 0.08 18.75 24.0 3.20

Environmental Characteristics

Operating/Storage Temperature ........................... -40 °C to +85 °C

Maximum Device Surface Temperature

in Tripped State .................................................. 125 °C

Passive Aging ....................................................... +85 °C, 1000 hours ............................................... ±5 % typical resistance change

Humidity Aging...................................................... +85 °C, 85 % R.H. 1000 hours ............................. ±5 % typical resistance change

Thermal Shock ..................................................... +85 °C to -55 °C, 10 times .................................... ±10 % typical resistance change

Solvent Resistance ............................................... MIL-STD-202, Method 215 ................................... No change

Vibration ............................................................... MIL-STD-883C, Method 2007.1, ........................... No change

Condition A

Test Procedures And Requirements For Model MF-RX/72 Series

Test Test Conditions Accept/Reject Criteria

Visual/Mech. ......................................................... Verify dimensions and materials ........................... Per MF physical description

Resistance ............................................................ In still air @ 23 °C ................................................. Rmin ≤ R ≤ Rmax

Time to Trip ........................................................... 5 times Ihold, Vmax, 23 °C ................................... T ≤ max. time to trip (seconds)

Hold Current ......................................................... 30 min. at Ihold ..................................................... No trip

Trip Cycle Life ....................................................... Vmax, Imax, 100 cycles ........................................ No arcing or burning

Trip Endurance ..................................................... Vmax, 48 hours ..................................................... No arcing or burning

UL File Number .................................................... E174545

http://www.ul.com/ Follow link to Certiﬁ cations, then UL File No., enter E174545

CSA File Number .................................................. CA110338

http://directories.csa-international.org/ Under “Certiﬁ cation Record” and “File Number”

enter 110338-0-000

TÜV Certiﬁ cate Number ....................................... R 02057213

http://www.tuvdotcom.com/ Follow link to “other certiﬁ cates”, enter File No. 2057213

*RoHS COMPLIANT

Summary of content (5 pages)

PAGE 1
T PL IA N M CO *R oH S Features Applications ■ 72 V rated Almost anywhere there is a low voltage power supply, up to 72 V and a load to be protected, including: ■ Security and fire alarm systems ■ Loudspeakers ■ Power transformers ■ Radial leaded devices ■ Cured, flame retardant epoxy polymer RX11 4180 0 S insulating material meets UL 94 V-0 requirements ■ RoHS compliant* ■ Agency recognition: MF-RX/72 Series - PTC Resettable Fuses Electrical Characteristics Ihold Model MF-RX020/72 MF-RX025/72 MF-R
PAGE 2
Additional Features ■ Resettable circuit protection ■ Bulk packaging, tape and reel and Ammo-Pak available on most models MF-RX/72 Series - PTC Resettable Fuses Product Dimensions Model MF-RX020/72 MF-RX025/72 MF-RX030/72 MF-RX040/72 MF-RX050/72 MF-RX065/72 MF-RX075/72 MF-RX090/72 MF-RX110/72 MF-RX135/72 MF-RX160/72 MF-RX185/72 MF-RX250/72 MF-RX300/72 MF-RX375/72 A Max. 7.4 (0.291) 7.4 (0.291) 7.4 (0.291) 7.4 (0.291) 7.9 (0.311 9.7 (0.382) 10.4 (0.409) 11.7 (0.461) 10.84 (0.427) 12.26 (0.483) 13.94 (0.
PAGE 3
MF-RX/72 Series - PTC Resettable Fuses MF -R MF X 0 2 0 -RX MF 025 -R MF X030 -R MF X040 -R MF X050 -R MF X065 -R MF X075 -RX 090 MF -R MF X110 -R /7 MF X135 2 -RX /72 1 MF -R 60/7 MF X185 2 -R /7 MF X250 2 -RX /72 MF 300 -RX /72 375 /72 Typical Time to Trip at 23 ˚C 1000 100 Time to Trip (Seconds) Time to trip (Seconds) 100 10 1 0.1 10 1 0.1 0.01 0.01 0.001 0.001 0.
PAGE 4
MF-R/72 & MF-RX/72 Series Tape and Reel Specifications Devices taped using EIA468–B/IEC60286-2 standards. See table below and Figures 1 and 2 for details. IEC Mark EIA Mark Carrier tape width W W Hold down tape width W0 W4 Dimension Description Hold down tape Dimensions Dimensions Tolerance 18 -0.5/+1.0 (.709) (-0.02/+.039) 11 min. (.
PAGE 5
MF-R/72 & MF-RX/72 Series Tape and Reel Specifications IEC Mark EIA Mark Reel width w W2 Reel diameter d a W1 h Arbor hole diameter f c Core diameter h n Dimension Description Space between flanges less device Dimensions Dimensions Tolerance 56.0 max. (2.205) 370.0 max. (14.57) 4.75 ±3.25 (.187) (±.128) 26.0 ±12.0 (1.024) (±.472) 80 max. (3.15) 64 372 372 max. (2.52) (14.6) (14.6) Box Consecutive missing places 3 Empty places per reel max.