0ZRG0185FF1E

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[HF]@B OZRG Series Fuse<br>**----- End of picture text -----**<br>


# OZRG Series RoHS 2 Compliant & Halogen-Free 

Application Low voltage USB equipment and Computers & peripherals Product Features 

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Low resistance, Fast trip time, Low trip-to-hold ratio Operating (Hold Current) Range 750mA - 2.5A Maximum Voltage 16V/30VDC Temperature Range -40°C to 85°C Agency Approval TUV (Std. EN60738-1-1, Cert. R50102187, Rated Voltage: DC 16V) 

- UL Component (Std. UL1434, File E305051,Rated Voltage: DC 30V) UL Conditions of Acceptability: 

1. These devices have been investigated for use in safety circuits and are suitable as a limiting device. 

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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 = G)<br>Electrical Characteristics (23) HALOGEN FREE - [Hf<br>Part‘art NumberNumbe Hold Trip Max Time to Trip Max Rated A Typical Resistance Tolerance} Agency Approvals<br>eyul Ta) ma | A | Sec | ImaxA | Vmax, Vdc | Pd,W | Ohms | Ohms | sia-<br>‘B|ozncoosorrie | oso | 180 | 30 | 12 | « | 1600 | os | om | ow | vy | y_<br>plozncoiorrie | 120 | 200 | a0 | o7 | a | wean | o6 | oo | om | vy | y_<br>Elozrgorsrre | 135 | 270 | 80 | 45 | 40 | 160 | oa | oo | o12 | vy |v<br>OZAGOTGOFFIE | 1.60 | 320 | 80 | 90 | 40 | 1690 | o9 | oo | om | vy |v |<br>‘Hozraowssrrie | 185 370 | 80 | 100 | 40 | 1690 | 1.0 | 003 | 009 | y | vy _<br>*I- Rated jozn@casorrtevoltage is 30V| 250per UL| 5001434 |and 16V80 per| EN40060738-1-1| 40 | 16/90<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>eSo ons, POWER<br>ott age<br>HO) ee eC See yee Bel Fuse Inc. +1 201.432.0463<br>oe es 206 Van Vorst Street Bel.US.CS@belf.com<br>“Se” a bel group Jersey City, NJ07302 USA _ belfuse.com/circuit-protection<br>**----- End of picture text -----**<br>


© 2018 Bel Fuse, Inc. OZRG Feb2018 1/4 

## Radial Leaded PTC 

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


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[HF]@B OZRG Series Fuse<br>**----- End of picture text -----**<br>


## RoHS 2 Compliant & Halogen-Free 

PTC's - 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 = 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 23T 

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(See Elec. Characteristics Table for P/N - Curve correlation)<br>A BC DE FGH |<br>100 eS SS SS SS SS SS SS SS SS SG | 100 _————— aaa aed<br>SS CE SSSSSS<br>g 0SN se >»LoS<br>Bf0S SSS SSSSSSSS SS SSS SSSSSS<br>EjSSPNAS ————RIa. <2SASSae<br>§,_————_€ 01 pobebe—aeod ENODSS REttEE -8 SeSSSPt SNSSS SSS SSS ESS SSESE<br>oor pdee NR 0.01 (afd<br>ce Po EEEEEE<br>0.001 1 1 T F rt ooor LL 1 TT [Trt]<br>1 10 100 1 10 100<br>Fault Current (A) Fault Current (A)<br>**----- End of picture text -----**<br>


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eee POWER<br>HO) ae eC See yee<br>oe cd<br>. ee a a bel group<br>**----- End of picture text -----**<br>


Specifications subject to change without notice Bel Fuse Inc. +1 201.432.0463 206 Van Vorst Street Bel.US.CS@belf.com Jersey City, NJ 07302 USA belfuse.com/circuit-protection 

© 2018 Bel Fuse, Inc. OZRG Feb2018 2 / 4 

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OZRG Series<br>[HF]@ OZRG Series Fuse RoHS 2 Compliant & Halogen-Free<br>Physical Specifications<br>Lead material:<br>Matte tin plated copper, size / diameter as shown in Drawings and Table under Product<br>Dimensions.<br>Soldering charactcristics<br>Solder ability per ANSI/J-STD 002,Solder heat withstand per IEC 68-2-20.<br>Insulating coating<br>Flame retardant epoxy polymer, meets UL-94-V-0 requirements.<br>PTC Marking<br>“bel” or “b”, , lH code and “RG” .<br>Product Dimensions<br>All dimensions in mm.<br>A E A E<br>| Oraay Fax| Max [Typicall Min| Max | Typical<br>e 8) fozncoorsrr | 2 | 69 [114 | 51 | 76 | 30 | 08 |<br>‘ D jozrcottorr | 1 | 7.4 | 142 | 51 | 76 | 30 | 08 |<br>} > © ozrcoosorr | 1 | 7.4 | 122 | 51 | 76 | 30 | 08 |<br>i —t ozrcorzorr | 2 | 69 | 11.7 | 51 | 76 | 30 | 08 |<br>« c € e€ F jozreossrF | 2 | 69 | 11.7 | 51 | 76 | 30 | 08 |<br>Figs Fig2 Fozncoreorr | 1 | 09 | 152 | 51 | 76 | 30 | 08 |<br>Lead Size: 24AWG Lead Size: 24AWG ozrcotesFr | 1 | 102 | 15.7 | 5.1 | 76 | 30 | 08 |<br>© 0.51 mm Diameter © 0.51 mm Diameter | ozrcosorr | 1 | 11.4 | 183 | 51 | 76 | 30 | 08<br>Thermal Derating Curve<br>Cautionary Notes<br>1. Operation beyond the specified maximum ratings or<br>= 200% improper use may result in damage and possible<br>= 2. These Polymer PTC (PPTC) devices are intended for<br>BFE EEE | 2 cesoceter<br>Pr} pf ft tt tp protection against occasional overcurrent/<br>2 pt | | |p te tp tt tT | overtemperature fault conditions and may not be<br>=Bec 150% apfRRfffEEEpf pp pepe pp et pp pt Tt  |,3. fendi Avoidsuitable contactforrr use ofin PTC applications device with whereaici chemical repeated and/or solvent.<br>3 100% en 4 Prose PTO devices may not be suitable for use in<br>x SEE circuits with a large inductance, as the PTC trip can<br>3 Es ee ee ee ee ee eee generate circuit voltage spikes above the PTC rated<br>3© Pt tT tp Pp te SAT voltage. . . .<br>fad rt [ [| | 7 7 fT yy yy ft fy ft yy yt yy Ty ss 5. These devices are intended for use in DC voltage<br>aaa OO applications only. Use in AC voltage applications<br>~ Pty tT tt tt te tt tT Thhhh Thr hr TT should be first discussed with Bel Fuse engineering.<br>c rt tT | tT tT tT tt tT tT tT TP hE Th TT 6. Not recommended for use on potted or conformal<br>8 Pt tt Pp tee pt pee et coated PCB's. Restriction of free air flow could affect<br>2 0% a eee electrical performance and/or result in device failure.<br>a -40 -20 0 20 40 60 80 Consult Bel Fuse engineering.<br>7. In the “Indeterminate Performance / grey zone”,<br>Ambient2  Temperatu re (C) trippingspecial circumstancesmay occur but consideringcannot be relieduse withinupon. thisFor<br>region, consult Bel Fuse Engineering.<br>Specifications subject to change without notice<br>o 3°". ,<br>SERS POWER<br>end ie SOLUTIONS & 1 201.432.0463<br> @-s PROTECTION bese ine ‘Scobey<br>eS sa 206 Van Vorst Street Bel.US.CS@belf.com<br>“S88°2" a bel group Jersey City, NJ 07302 USA __ belfuse.com/circuit-protection<br>**----- End of picture text -----**<br>


© 2018 Bel Fuse, Inc. OZRG Feb2018 3/4 

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OZRG Series<br>[HF]@B OZRG Series Fuse RoHS 2 Compliant & Halogen-Free<br>**----- End of picture text -----**<br>


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Soldering Parameters<br>Lead-free Wave Soldering Profile<br>Wave SolderParameter |<br>- . typical 1 - 2°C / second<br>within 125°C of soldering temperature<br>Time win 0°C/-5° of actual peak temperate<br>oor 10 seconds aoe the tekte ekove:<br>oO es nO<br>Qa 906 be ses ose POM<br>1<br>Ww 1 ST WAVE \<br>= | to<br>' '<br>< 200°C/SEC r 4 ,<br>Ss 100 + ------= : ‘ H ' 2°C/SEC<br>Ww oe ' '<br>= wosec of tf ;<br>25 tio<br>15 100<br>sec<br>TIME (SEC)<br>**----- End of picture text -----**<br>


## Standard Packaging 

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| Buk | Reel/Tape<br>P/N Code| Pcs/Reel |P/N Code<br>OZRGOO75FF<br>~<br>OZRGO250FF<br>Fle<br>AGERE » POWER<br>Ee ie e See yee<br>te ad<br>“S88°2" a bel group<br>**----- End of picture text -----**<br>


P/N Explanation and Ordering Information PTC series eeOZRG | XKOKeeeeXX XK OZRG Series 

| HOLD Rating Refer to Part Number and IH Rating in Electrical Characteristics Table on P.1. Electrical Characteristics F = Standard Design 

A to Z (except F) = Special, customer spec, DCR sort, etc. 

Mechanical Features 

F = Standard Design 

A to Z (except F) = Special, customer spec, lead forming, etc. Tape & Reel py See standard packaging Specifications subject to change without notice Bel Fuse Inc. +1 201.432.0463 206 Van Vorst Street Bel.US.CS@belf.com Jersey City, NJ 07302 USA __ belfuse.com/circuit-protection 

© 2018 Bel Fuse, Inc. OZRG Feb2018 4/4