Environmental Characteristics
Operating Temperature .................................... -20 °C to +85 °C
Humidity Aging................................................. +85 °C, 85 % R.H. 1000 hours .........................±20 % typical resistance change
Passive Aging .................................................. +85 °C, 1000 hours ...........................................±20 % typical resistance change
Vibration .......................................................... MIL-STD-883C, Method 2007.1,.......................No change
Condition A
Solvent Resistance .......................................... MIL-STD-202, Method 215 ...............................No change
Test Procedures And Requirements For Model MF-RM Series
Item Test Conditions Accept/Reject Criteria
Visual/Mechanical ............................................ Verify dimensions and material .........................Per MF physical description
Resistance ....................................................... In still air @ 23 °C .............................................Rmin ≤ R ≤ R1max
Time to Trip ...................................................... 240 Vac, specifi ed current ................................T ≤ max. time to trip
Hold Current .................................................... At Ihold ..............................................................No trip
Trip Cycle Life .................................................. 240 Vac, Imax, 100 cycles ................................No arcing or burning
Trip Endurance ................................................ a) 240 Vac, Imax, 24 hours ..............................No arcing or burning
b) 265 Vac, Imax, 30 mins.
Solderability ..................................................... MIL-STD-202, Method 208 ...............................95 % min. coverage
UL File Number .....................E174545 ........... http://www.ul.com/ Follow link to Certifi cations, then UL File No., enter E174545
TÜV Certifi cate Number ........50232433 ......... http://www.tuvdotcom.com/certifi cates/50232433?locale=en&page_number=3
Electrical Characteristics
Model
Typical Current
Trip Limit Vmax Imax Initial
Resistance
One Hour
Post-Trip
Resistance
Max.
Time to Trip
Tripped
Power
Dissipation
Ihold
at 23 °C
Itrip
at 23 °C
Operating
Voltage
Interrupt
Voltage
Interrupt
Current
RMin.
at 23 °C
R1 Max.
at 23 °C at 23 °C PD Typ.
at 23 °C
(A) (A) (Vac) (Vac) (A) (Ohms) (Ohms) (A) (Sec.) (W)
MF-RM005/240 0.05 0.12 240 265 1.0 18.50 65.00 0.25 10.0 0.9
MF-RM008/240 0.08 0.19 240 265 1.2 7.40 26.00 0.40 10.0 0.9
MF-RM012/240 0.12 0.30 240 265 1.2 3.00 12.00 0.60 15.0 1.0
MF-RM016/240 0.16 0.37 240 265 2.0 2.50 7.80 0.80 15.0 1.4
MF-RM025/240 0.25 0.56 240 265 3.5 1.30 3.80 1.25 18.5 1.5
MF-RM033/240 0.33 0.74 240 265 4.5 0.77 2.60 1.65 21.0 1.7
MF-RM040/240 0.40 0.90 240 265 5.5 0.60 1.90 2.00 24.0 2.0
MF-RM055/240 0.55 1.25 240 265 7.0 0.45 1.45 2.75 26.0 3.4
Features
■ Radial leaded devices
■ Cured, fl ame retardant epoxy polymer
insulating material meets UL 94V-0
requirements
■ Bulk packaging, tape and reel available
■ Resettable circuit protection
■ Agency recognition:
■ RoHS compliant* and halogen free**
Applications
■ Food blenders, coffee machines
■ HVAC
■ Electric fans, blowers
■ AC adaptors
MF-RM Series - PTC Resettable Fuses
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns follows the prevailing defi nition of “halogen free” in the industry. Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less;
(b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
*RoHS COMPLIANT
&
**HALOGEN FREE