Radial Leaded PTC OZRE Series ROHS 6 Compliant & Halogen-Free HF] @ OZRE Series Fuse Application Line Voltage Power Supply, Transformer and Appliances Product Features Continuous Use at voltages up to 240V AC/DC, Low Hold Current, 265V AC/DC Max Interrupt voltage Operating (Hold Current) Range Temperature Range 50mA - 550mA -40C to 85C Maximum Operating Voltage Maximum Interrupt Voltage 240V AC/DC 265V AC/DC Agency Approval TUV (Std. EN60738-1-1, Cert. R50102173) UL Component (Std. UL1434, File E305051) UL Conditions of Acceptability: 1. These devices have been investigated for use in safety circuits and are suitable as a limiting device. 2. These devices have been calibrated to limit the current to 8 amps within 5 seconds, per ANSI/NFPA 70, National Electrical Code. LEAD FREE = GZ) Electrical Characteristics (23C) HALOGEN FREE = [5 Hold Trio |Max Time to Trip} Max Rated Typical Resistance Tolerance Agency Approvals Part Number | Current Current @ SxIH Current | Voltage Power Rmin Rmax | Rimax A (Bulk) CW IH, A IT, A Seconds Imax, A | Vmax, Vdc |} Pd, W Ohms Ohms | Ohms A |QZREOOO5FFIC | 0.05 0.12 15.0 1.5 240 0.7 18.50 31.00 65.00 Y B | OZREOOO8FF1IC | 0.08 0.19 15.0 13 240 0.8 7.40 12.00 26.00 Y x C |} OZREOO12FF1C | 0.12 0.30 15.0 2.0 240 1.0 3.00 6.50 12.00 Y Y D | OZREOOI6GFFIC | 0.16 0.37 15.0 2.0 240 1.4 2.50 4.10 7.80 Y Y E | OZREOO25FF1E | 0.25 0.56 18.5 6.0 240 1.5 1.30 2.10 3.80 Y Y F | OZREOO33FF1A | 0.33 0.74 21.0 6.0 240 1.7 0.83 1.24 2.60 Y Y G|OZREOO40OFF1A | 0.40 0.90 24.0 7.0 240 2.0 0.60 0.97 1.90 Y Y H | OZREOO55FF1A | 0.55 1.25 26.0 7.0 240 3.4 0.45 0.73 1.45 Y Y IH Hold Current-maximum current at which the device will not trip in still air at 23C. IT Trip current-minimum current at which the device will always trip in still air at 23C. Imax Maximum fault current device can withstand without damage at rated voltage (Vmax). Vmax Maximum voltage device can withstand without damage at its rated current. Pd Typical power dissipated by device when in tripped state in 23C still air environment. Rmin Minimum device resistance at 23C. Rmax Maximum device resistance at 23C. Rimax Maximum device resistance at 23C, 1 hour after initial device trip, or after being soldered to PCB in end application. Specifications subject to change without notice 2 Ds Retna Bel Fuse Inc. +1 201.432.0463 eee 206 Van Vorst Street techhelp@belf.com +e Sands Bae tere oy fires = a bel group Jersey City, NJ 07302 USA belfuse.com 2014 Bel Fuse, Inc. OZRE Aug2015 1/4Radial Leaded PTC OZRE Series HF] @ OZRE Series Fuse ROHS 6 Compliant & Halogen-Free PTCs - Basic Theory of Operation / Tripped Resistance Explanation Fundamentally, a Bel PTC consists of a block of polymeric material containing conductive filler and bonded between two conductive, planar terminations. At currents below the device IHOLD rating, AND at temperatures below 100C, the PTC maintains a resistance value below its R1 MAX rating. As the device's temperature approaches 130C, either due to an increase in ambient temperature or a current exceeding its | TRIP rating, volumetric expansion of the filled polymer breaks apart the majority of conductive pathways across the terminals created by chain contact of adjacent filler particles or device resistance increases sharply by several orders of magnitude. At the much higher Tripped resistance, there is just enough leakage current to allow internal heating to hold the device in its tripped state (around 125C) until power is interrupted. Once power is removed, the PTC's core cools and contracts allowing conductive chains to reform and return the device to its low resistance state. The catalog data for each device specifies a "Typical Power" value. This is the power required to exactly match the heat lost by the tripped device to its ambient surroundings at 23C. By Ohm's Law, power can be stated as: W = E*2/R. Thus the approximate resistance of a Tripped PTC can be determined by: R = E*2/W, where "E" is the voltage appearing across the PTC (usually the supply's open circuit voltage), and "W" is the Typical Power value for the particular PTC. since the PPTC acts to maintain a constant internal temperature, its apparent resistance will change based upon applied voltage and, to a lesser degree, ambient conditions. Consider the following example.... A PTC with a Typical Power of 1 watt protecting a circuit using a 60V supply will demonstrate an apparent, tripped resistance "R" of: R = 6042/1 = 3,600 ohms This same tripped device when used to protect a 12V circuit would now present an apparent resistance otf: R = 1242/1 = 144 ohms The value for Typical Power is "typical" because any physical factors that affect heat loss (such as ambient temperature or air convection) will somewhat alter the level of power that the PTC needs to maintain its internal temperature. In short, PTCs do not exhibit a constant, quantifiable tripped resistance value. Type Time - To - Trio at 23C (See Elec. Characteristics Table for P/N - Curve correlation) A BCG ODE FG H 1000 100 a a 10 = 2 EO a 0.1 0.01 0.1 1 10 100 Fault Current (A) Specifications subject to change without notice cs POWER ae Reena, Bel Fuse Inc. +1 201.432.0463 es my es 206 Van Vorst Street techhelp@belf.com SE = bel group Jersey City, NJ 07302 USA belfuse.com 2014 Bel Fuse, Inc. OZRE Aug2015 2/4Radial Leaded PTC HF] @ OZRE Series Fuse OZRE Series ROHS 6 Compliant & Halogen-Free Physical Specifications lead material: Matte tin plated copper, size / diameter as shown in Drawings and Table under Product Dimensions. Soldering charactcristics MIL-STD-202, Method 208H. Insulating coating Flame retardant epoxy, meets UL-94-V-0 requirements. PTC Marking bel or b, , IH code and RE . Product Dimensions All dimensions in mm. A B C D E F Fig. | | 9 Max | Max | Typical | Min | Max | Typical 1 8.3 | 10.7 5.1 7.6 3.8 1.6 1 9.9 | 12.5 3.1 7.6 3.8 1.6 9.6 | 17.4 3.1 7.6 3.8 16 11.4 | 16.5 9.1 7.6 3.8 1.8 11.5 | 19.5 9.1 7.6 3.8 1.8 < A E ~ = A > > < A > E te F | il F 4 =) Part Number B | B B OZREOOO5FF A i | yf . to D r a" n OZREOO12FF D D __ ye A OZREO016FF Ko fl fee ke Of rede Oe Od g g on) g q 89 g g ga OZRE0025FF Fig.1 Fig.2 Fig.3 Lead SEP: > SAAS Lead Size : 22AWG Lead Size : 20AWG me EEsginreone 00.51 mm Diameter 0.65 mm Diameter 0.81 mm Diameter OZREOO40FF OZREOO55FF Go |} Mh | ND | PO 14.0 | 21.7 9.1 7.6 4.1 ino Thermal Derating Curve Hold & Trip Current and Thermal Derating Curve | | | Device will trip and protect circuit. 200% il 300% 250% Indeterminate performance : 150% 100% and Trip Current 30% Percentage of Hold Current 0% | -A0 20 0 20 AO 60 80 Ambient Temperature (C ) Hold Current Trip Current POWER C SOLUTIONS & PROTECTION Cautionary Notes 1. Operation beyond the specified maximum ratings or improper use may result in damage and possible electrical arcing and/or flame. 2. These Polymer PTC (PPTC) devices are intended for protection against occasional overcurrent/ overtemperature fault conditions and may not be suitable for use in applications where repeated and/or prolonged fault conditions are anticipated. 3. Avoid contact of PTC device with chemical solvent. Prolonged contact may adversely impact the PTC performance. 4. These PTC devices may not be suitable for use in circuits with a large inductance, as the PTC trip can generate circuit voltage spikes above the PTC rated voltage. 5. These devices are intended for use in DC voltage applications only. Use in AC voltage applications should be first discussed with Bel Fuse engineering. 6. Not recommended for use on potted or conformal coated PCBs. Restriction of free air flow could affect electrical performance and/or result in device failure. Consult Bel Fuse engineering. 7. In the Indeterminate Performance / grey zone, tripping may occur but cannot be relied upon. For special circumstances considering use within this region, consult Bel Fuse Engineering. Specifications subject to change without notice Bel Fuse Inc. +1 201.432.0463 206 Van Vorst Street techhelp@belf.com 3% = abel group Jersey City, NJ 07302 USA belfuse.com 2014 Bel Fuse, Inc. OZRE Aug2015 3/4Radial Leaded PTC OZRE Series HF] @ OZRE Series Fuse ROHS 6 Compliant & Halogen-Free Soldering Parameters Lead-free Wave Soldering Profile _ Wave Solder Parameter 200C / second Average ramp-up rate typical 1 - 2C / second Max 4C / second Final preheat temperature within 125C of soldering temperature Peak temperature Tp 260C Time within +0C / -5C of actual peak temperature | 5 seconds Heating rate during preheat Ramp-down rate 5C / second max. 5 ! SEC a 260 --=-=2-22=,-n7 7 iat 1 ST WAVE LL t ~ 4 5C/SEC 1 i = soorc/sec ft}! : =~ 1 1 Li os 7 Bw -od i | on Li 4 ' asec os ff 25 rho . | ! 100 TIME (SEC) Standard Packaging P/N Explanation and Ordering Information Reel/Tape Pcs/Reel | P/N Code P/N PTC series OZREOOO5FF OZRE Series - 2000 2C | | HOLD Rating OZREOO16FF | Refer to Part Number and IH Rating in Electrical Characteristics Table on P.1. OZREOO25FF 1800 2B Electrical Characteristics OZREOO33FF | F = Standard Design _ 1500 2B A to Z (except F) = Special, customer spec, DCR sort, etc. OZREOO40FF Mechanical Features F = Standard Design OZREOO55FF 1000 OA A to Z (except F) = Special, customer spec, lead forming, etc. Tape & Reel Qty see standard packaging Specifications subject to change without notice POWER i Oo C Reena, Bel Fuse Inc. +1 201.432.0463 {oe ee 206 Van Vorst Street techhelp@belf.com a bel group Jersey City, NJ 07302 USA belfuse.com 2014 Bel Fuse, Inc. OZRE Aug2015 4/4