0ZCF0150FF2C

OZCF Series 

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[HF]@B OZCF Series -2920 Chip<br>**----- End of picture text -----**<br>


RoHS 6 Compliant & Halogen-Free 

## Application 

All high-density boards 

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Product Features<br>2920 Chip Size , Fast Trip Time, High Hold Currents<br>Operating (Hold Current) Range<br>300mA - 3A<br>tovA OWNis' TemperatureMaximum6 - 6OV (per table)VoltageRange<br>-40°C to 85°C<br>TUV (Std. EN60738-1-1, Cert. R50102117)<br>@ ‘e Agency Approval<br>‘ ‘a - UL Component (Std. UL1434, File E305051)<br>- i UL Conditions of Acceptability:<br>a limiting device.<br>& ‘ 1. These devices have been investigated for use in safety circuits and are suitable as<br>2. These devices have been calibrated to limit the current to 8 amps within 5 seconds,<br>per ANSI/NFPA 70, “National Electrical Code”. LEAD FREE = (P8)<br>Electrical Characteristics (23) HALOGEN FREE = FREE = = [HF]<br>**----- End of picture text -----**<br>


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Electrical Characteristics (23) HALOGEN FREE = FREE = = [HF]<br>Hold Trip Rated | Maximum} Typical | Max Time to Trip | Resistance Tolerance | Agency Approvals<br>|A| Part Number | Current | Current| Voltage _| Current | Power Curent} Time | Rin | Rime! ay, | 2<br>|B| ozcroosorF2c | 0.30 | 060 | 6o | to | 15 | 15 | 30 | 1.000 | 46800 | Y | yY_ |<br>| ozcroosorFec | 050 | 1.00 | 60 | 100 | 15 [| 25 | 40 | o300 | 1400 | Y [| yY |<br>| OZccOOrSFE2® 075150 _/_83._|_400_-_46 __80__03_/_0.480_|_1.000_}_¥_}_¥_<br>NEW  ozcroo7sArec | 0.75 | 150 | 60 | 100 | 15 | 60 | o3 | o180 | 1000 | Y | Y_ |<br>‘Fp Pozcrotooar2a| ozcro110FF2c |1.001.10 |2,00220 || _@0_{33 | 19010 _}| 4.615 _{| 8080 || 0o5 {0.90| oop  _/_9410_|_y_}_y_|| o40 | vy | y |<br>[E| ozcroizsFr2c | 1.25 | 250 | 33 | 100 | 15 | 80 | 20 | oo50 | ov | vy | y_ |<br>[F | ozcroisorrac | 150 | 300 | 33 [| 10 | 15 | 80 | 20 | oso [| oo: [| vy [| vy |<br>|G| ozcrorssFF2c | 1.85 | 370 | 33 | 100 | 15 | so | 25 | oof | o150 | Y | yY_ |<br>ee| ozcroz00aF2c  —e—e————————————————————————————| 2.00 | 400 | 24 | 100 | 15 | 80 | 50 | 0.03 | o120 | Y | Y |<br>||| ozcroesorFec | 250 | 5.00 | 16 | 100 | 15 | 80 | 160 | 002 | oo8 | Y | yY_ |<br>new rptngsOZCFO260AF2CAap mor oeeorrAG | B60.260 | 6.20$20, | 24B10| 100 | 15BF| 80BO| 200m0| 0.020ome || oooor| vy | Y |<br>K| | ozcrosooFF2c | 3.00 | 5.20 | 6 | 100 | 15 | 80 | 250 | oo | oo | Y | Y |<br>OZCFO300AF2C | 3.00 | 5.20 | 15 | 100 | 15 | 80 | 200 | oo | oo | Y | Y |<br>New RptingsOZCFO3 O BF2C | 3.00 | 5.20 | 24 | 100 | 15 [| 80 | 200 | oo | oo | Y [ yY _ |<br>IH Hold Current-maximum current at which the device will not trip in still air at 23°C.<br>IT Trip current-minimum current at which the device will always trip in still air at 23°C.<br>Imax Maximum fault current device can withstand without damage at rated voltage (Vmax).<br>Vmax Maximum voltage device can withstand without damage at its rated current.<br>Pd Typical power dissipated by device when in tripped state in 23°C still air environment.<br>Rmin Minimum device resistance at 23°C.<br>Rimax Maximum device resistance at 23°C, 1 hour after initial device trip, or after being soldered to PCB in end application.<br>Specifications subject to change without notice<br>Mnpigtteaed POWER<br>@ e See yee Bel Fuse Inc. +1 201.432.0463<br>ES ‘sa 206 Van Vorst Street techhelp@belf.com<br>“Se = abel group Jersey City, NJ 07302 USA belfuse.com<br>**----- End of picture text -----**<br>


© 2016 Bel Fuse, Inc. OZCF Nov2016 1/4 

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OZCF Series<br>**----- End of picture text -----**<br>


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[HF]@B OZCF Series -2920 Chip RoHS 6 Compliant & 6 Compliant & & Halogen-Free<br>PTC's - Basic Theory of Operation / “Tripped” Resistance Explanation<br>Fundamentally, a Bel PTC consists of a block of polymeric material containing conductive filler and<br>bonded between two conductive, planar terminations.<br>**----- End of picture text -----**<br>


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RoHS 6 Compliant & 6 Compliant & & Halogen-Free<br>**----- End of picture text -----**<br>


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 = E42/R. Thus the approximate resistance of a “Tripped” PTC can be determined by: R = E2/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 of: 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 - Trip at 237 

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(See Elec. Characteristics Table for P/N - Curve correlation)<br>A B CD EFGH WK<br>0 ==SSS SSS SSS<br>ee<br>wo po}(ANTIKtT PA  NANTeeNE IAA ET<br>~ JNINERSSEE<br>a ee,ee<br>i a a 8<br>po<br>oor L_1 [Titi tt Pet TTT<br>on ' Fault Current (A) Wy 100<br>**----- End of picture text -----**<br>


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Ase POWER<br>Ee ie e See yee<br>Bt ca<br>“47% abel group<br>**----- End of picture text -----**<br>


Specifications subject to change without notice Bel Fuse Inc. +1 201.432.0463 206 Van Vorst Street techhelp@belf.com Jersey City, NJ 07302 USA belfuse.com 

© 2016 Bel Fuse, Inc. 

OZCF Nov2016 2/4 

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OZCF Series<br>[HF]@ OZCF Series -2920 Chip RoHS 6 Compliant & Halogen-Free<br>Pad Layout Termination Pad Materials<br>The dimensions in the table below provide the Matte Tin - Plated Copper<br>recommended pad layout.<br>w<br>|. Enver| Nominal | [Nominal__|] weminar—[—nonina—<br>[mm | inch | mm | Inch | mm_]NominalInch _ _|<br>s p s | 5.10 | 0.201 | 2.30 | 0.091 | 5.60 | 0.221 |<br>All dimensions in mm.<br>Mechanical Dimensions and Marking |_ozcroosorFec| par number [gn[Min | Max]|Bemieee<br>(0.50-1.20mm) | ogo | 4.5 | 30 |<br>DA ok a Eo.(0.50-0.90mm) |_ozcroosoFF2cOZCF0075FF2C | oso0.40 | 1.15 | oso0075  |<br>T OZCFOO7SAF2C 0.60 bese<br>0100<br>| _ozcroi2srr2c | ao | 90 ||<br>k 6.13 98mm) f l [—ozrasrroOZCFO200FF2C185)FF2C 320.30i ; oa0.90K tae0185 |<br>Pt [ ecrinwere | oso | owe | | age<br>| ozcroz6orr2c | 0.30 | 0 | ogo}<br>a. — 3+ | ezorcasoaracOZCFO300FF2C | oss0.40 | us0.90 | |<br>OZCFOSO0AF2C 0.40 1.45 15<br>Thermal Derating Curve | ezorevooerec | oes | ss | |<br>Cautionary Notes<br>Hold & Trip Current and Thermal Derating Curve 1. Operation beyond the specified maximum ratings or<br>improper use may result in damage and possible<br>300% electrical arcing and/or flame.<br>2. These Polymer PTC (PPTC) devices are intended for<br>= protection against occasional overcurrent/<br>® 250% overtemperature fault conditions and may not be<br>= me Lt suitable for use in applications where repeated and/or<br>sss A D 2 orote c rf prolonged fault conditions are anticipated.<br>CS 20m an | 3. Avoid contact of PTC device with chemical solvent.<br>zs = | Prolonged contact may adversely impact the PTC<br>os a! | - performance.<br>IO 15m ys e 4. These PTC devices may not be suitable for use in<br>S a circuits with a large inductance, as the PTC trip can<br>S$ A= generate circuit voltage spikes above the PTC rated<br>Ss  F 100% voltage.<br>c® z HT TTTh|| | | 5. Theseapplications devices only. are Use intended in AC for voltage use in applications DC voltage<br>2 e 50% Nevic BSista 2. _ should be first discussed with Bel Fuse engineering.<br>coated PCB's. Restriction of free air flow could affect<br>2 6. Not recommended for use on potted or conformal<br>% electrical performance and/or result in device failure.<br>-40 -20 0 20 40 60 80 Consult Bel Fuse engineering.<br>Ambient Temperature (‘C) 7. In the “Indeterminate Performance / grey zone”,<br>tripping may occur but cannot be relied upon. For<br>a Hold Current — Trip-  Current region,special consultcircumstancesBel FuseconsideringEngineering.use within this<br>8. MSL: 2a (According to IPC J-Std-020).<br>Specifications subject to change without notice<br>eSteh POWER<br>E@ 4 See yee Bel Fuse Inc. +1 201.432.0463<br>ES3% Bie oeof 206 Van Vorst Street techhelp@belf.com<br>“SEaTe" abel group Jersey City, NJ 07302 USA belfuse.com<br>**----- End of picture text -----**<br>


© 2016 Bel Fuse, Inc. OZCF Nov2016 3/4 

OZCF Series 

> [HF]@® OZCF Series -2920 Chip RoHS 6 Compliant & Halogen-Free 

## Solder Reflow and Rework Recommendations 

tp Profile Feature Pb-Free Assemb! Tp eee eee a Critical Zonea AveragePreheat Ramp-Up: Rate (Tsmax to Tp 3°C/second max fta|Ramp-up| Temperature Min (Tsmin) 150°C @ TS max Temperature Max (Tsmax) 200°C Fe ee Time (tsmin to tsmax: 60-180 seconds Ss Time maintained above: o Tein Temperature(TL) 217°C E ; Time (ty 60-150 seconds = Peak/Classification Temperature(Tp) : 260°C Time within 5°C of actual Peak : —— 25 Temperature (tp 20-40 seconds —— t 25°C to Peak —— Ramp-Down Rate : 6°C/second max. Time ——> Time 25°C to Peak Temperature : Solder Reflow Due to “ lead free / RoHS 6 ” construction of these PTC devices , the required Temperature and Dwell Time in the “ Soldering ” zone of the reflow profile are greater than those used for non-RoHS devices. 1. Recommended reflow methods; IR, vapor phase oven, hot air oven. 2. Not Recommended For Wave Solder / Direct Immersion. 3. Recommended paste thickness range — 0.20 —- 0.25mm. 4. Devices are compatible with standard industry cleaning solvents and methods. 5. MSL : 2a (According to IPC J-Std-020). 

## Caution 

If reflow temperature / dwell times exceed the recommended profile, the electrical performance of the PTC may be affected. Rework : MIL-STD-202G Method 210F, Test Condition A. 

## Standard Packaging 

## P/N Explanation and Ordering Information 

2000 or 1000 fuses in 7 iinches dia.i Reel, Samm OZCF OXXX X_X_ XX wide tape, 4mm pitch, PTC series 9——_______ |[“OZCFO100AF2A_|] per EIA-481 (equivalent OZCF 2920 Size |__OZCFO110FF2C _ | 7,000 | jE¢_286 part 3) . | HOLD Rating |[OZCFO150FF2C] _| ElectricalRefer to Part NumberCharacteristics and IH Rating in Electrical Characteristics Table on P.1. F = Standard Design A to Z (except F) = Special, customer spec, DCR sort, etc. | _OZCFO250FF2C _| Mechanical Features F = Standard Design A to Z (except F) = Special, customer spec, lead forming, etc. Tape & Reel Qty See standard packaging ao Bente Specifications subject to change without notice REESE POWER re: bel bel See yee Bel Fuse Inc. +1 201.432.0463 tee 206 Van Vorst Street techhelp@belf.com “Se = = abel group group Jersey City, NJ 07302 USA belfuse.com 

ao Bente REESE POWER re: bel bel See yee tee “Se = = abel group group 

© 2016 Bel Fuse, Inc. OZCF Nov2016 4/4