0ZCH0010FF2E

OZCH Series 

[HF]@8 OZCH Series -1210 Chip 

RoHS 6 Compliant & Halogen-Free 

## Application 

- All high-density boards 

- Product Features 1210 Chip Size , Fast Trip Time, Low DCR Resistance 

- Operating (Hold Current) Range 

- 50mA - 2A 

- Maximum66 - 6OV (per Voltage table) 6OV (per Voltage table) (per Voltage table) Voltage table) table) 

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a ALi Maximum66 - 6OV (per Voltage table) 6OV (per Voltage table) (per Voltage table) Voltage table) table)<br>Temperature Range<br>‘a -40°C to 85°C<br>& : AgencyTUV (Std. ApprovalEN60738-1-1, Cert. R50102117)<br>: ‘a }. UL Component (Std. UL1434, File E305051)<br>D ' UL Conditions of Acceptability:<br>we 1. These devices have been investigated for use in safety circuits and are suitable as<br>a limiting device.<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”.<br>**----- End of picture text -----**<br>


LEAD FREE = (P8) Electrical Characteristics (23°C) HALOGEN FREE = if Hold Trip Rated | Maximum |Typical) Max Time to Trip | Resistance Tolerance Agency Approvals OZCHOOOSFFE LIH,A | ITA |Vmax,Vdo_Imax,A |Pd,W| A | Sec | Ohms | Ohms_| = |B | 0.05 | 015 | 60 | 10 | 060| 0.25 | 180 | 3.600 | 50.000 | OZCHOOIOFF2E | 0.10 | 025 | 60 | 10 |060| 050 | 150 | 1.600 | 15000 | Y | Y | | D | OZCozc **H** oceoOOSS **FF** eE2G **| 0** 3520 **| 0** 74 **0 |** 3016 **| 1** 000 **|060** || **8** .00 **0 |** 00 **.** 0220 **| 0** .8032 **0 |** 5.00139 **0** 0 | Y | Y | “E |OZCHOOSOFF2G | 050 | 1.00 | 16 | 100 | 0.60 | 800 | 0.10 | 0250 | 0.900 OZCHOO7SFF2G | 0.75 | 150 | 8 | 100 | 060 | 800 | 0.10 | 0.130 | 0.400 OZCHOO7SAFZE | 0.75 | 1.50 | 24 | 100 | 060 | 8.00 | 0.10 | 0.130 | 0.400 | OZCHOII0FF2E | 1.10 | 220 | 8 | 100 | 0.80 | 8.00 | 0.30 | 0.060 _ H1 |ozcHOISOFF|ozcHoi7srr **2e | 1** .7550 **| 3** .05 **0 | 6 | 100 |** 00 **80** || **8** .0000 **|** 0.605 **0 |** 0.020cos **|** o1100.080 | Y | Y | OZCHO200FF2E | 2.00 | 400 | 6 | 100 |080| 800 | 1.00 | 0015 | 0.070 IH Hold Current-maximum current at which the device will not trip in still air at 23°C. IT Trip Current-minimum current at which the device will always trip in still air at 23°C. 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 23°C still air environment. Rmin Minimum device resistance at 23°C. R1imax Maximum device resistance at 23°C, 1 hour after initial device trip, or after being soldered to PCB in end application. Fle Specifications subject to change without notice EERE 5 POWER viet an fe SOLUTIONS & Bel Fuse Inc. +1 201.432.0463 ait iy PROTECTION Te ae 206 Van Vorst Street techhelp@belf.com “See” a bel group Jersey City, NJ 07302 USA belfuse.com 

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

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


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[HF]@B OZCH Series -1210 Chip<br>**----- End of picture text -----**<br>


## RoHS 6 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 237 

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(See Elec. Characteristics Table for P/N - Curve correlation)<br>B C DB EFGH i IJ<br>0 SSS ee<br>0 CoN NICONTANN<br>_Q ANLA} A INNTTN ANANRO—_ ANAS TT eee<br>e , LNESXCONSACAANW<br>2 ee eneS<br>Soy Gee NUNES NNN<br>- ee<br>oo) ett tAANNAN<br>— ee os a eae<br>oor |__| [| TT Titit NIN TIWANNA TONUN ON<br>0.1 1 ° , 00<br>Fault Current (A)<br>Specifications subject to change without notice<br>POWER<br>SOLUTIONS &PROTECTIONPROTECTION Bel Fuse Inc. +1 201.432.0463<br>206 Van Vorst Street techhelp@belf.com<br>Jersey City, NJ 07302 USA belfuse.com<br>**----- End of picture text -----**<br>


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© 2016 Bel Fuse, Inc. OZCH Nov2016 2/4 

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[HF]@B OZCH Series -1210 Chip RoHS 6 Compliant & Halogen-Free<br>Pad Layout PTC Marking<br>Therecommendeddimensionspadin thelayout.table below provide the I~] anb”, Ih code.<br>Part Number<br>w [PTs [wt<br>| |_Nominal_|[mm | inch | mmNominal_|| Inch | mmNominal| Inch _|| OZCHOO10FF2E |Di<br>| 2.00 [0.079 | 1.00 |0.039|2.80 |0.110) 0ZCHO035FF2G<br>se Pes __OZCHOOSOFF2GOZCHOO75FF2G ||P|Mi<br>Termination Pad Materials _OZCHOO7SAFZE|p __|<br>Matte Tin - Plated Copper _OZCHO110FF2E_OZCHO1SOFF2E|| RRS||<br>Mechanical Dimensions -<br>(0.25-0.75mm) aNumber_|__MinAll dimensionseein mm. oZCHO200FF2EOZCHO2O0FF2E | 2 _|<br> D4 k~ Ei £.10-2.c0m (Part<br>T OZCHOOOSFF2E |0.60|| 1.15Max_|<br>B 9 38-2.80 OZCHOO10FF2E | [0.60] | 1.15 _|<br> (2.35-2.80mm) OZCHOO20FF2E| 0.40<br>L ozcHoossFF2G| 0.40| 0.85 |<br>— a —— OZCHOOSOFF2G| 0.30| 0.80_|<br>(3.00-3.43mm) OZCHOO75FF2G| 0.30|| 0.7 50 |_|<br>Top and Bottom View 02ZCHO075AF2E | 0.80 | 1.20 |<br>ee— “¢ | [OZCHOT10FF2E] | 0.60 | 1.00 |<br>Side View c | [OZCHO15OFFZE] || 0.50 | 0.90 |<br>OZCHO175FF2E |0.80| 1.40 |<br>Thermal Derating Curve OZCHO200FF2E | [0.80] | 1.40 |<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>— a D 2 ‘ rp te ¢t circ prolonged fault conditions are anticipated.<br>oO 5 200% ap | 3. Avoid contact of PTC device with chemical solvent.<br>zs = Prolonged contact may adversely impact the PTC<br>os a! | _ performance.<br>ZO iso, Le ys = 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>© A= generate circuit voltage spikes above the PTC rated<br>Ssomc z 100% HT TTTh|| | | 5. Thesevoltage.applications devices only. are Use intended in AC for voltage use in applications DC voltage<br>® e 50% Nevic BSista 2. _ should be first discussed with Bel Fuse engineering.<br>2 6. Not recommended for use on potted or conformal<br>2 coated PCB’s. Restriction of free air flow could affect<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>tS.et ere POWER<br>eee<br>edel Pidtae SOLUTIONSPROTECTION& Bel Fuse Inc. + 1 201.432.0463432.<br>ES a 206 Van Vorst Street techhelp@belf.com<br>“Se = abel group Jersey City, NJ 07302 USA belfuse.com<br>© 2016 Bel Fuse, Inc. OZCH Nov2016 3/4<br>**----- End of picture text -----**<br>


## OZCH Series [HF]@H OZCH Series -1210 Chip RoHS 6 Compliant & Halogen-Free 

## Solder Reflow and Rework Recommendations 

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tp<br>Profile Feature Pb-Free Assemb! Tp eee eee a Critical Zonea<br>Average Ramp-UpTemperaturePreheat : Min (Tsmin)Rate (Tsmax to Tp 150°C3°C/second max ft@ee[Tmax |Ramp-upooo|<br>Temperature Max (Tsmax) 200°C —ie ee<br>Time (tsmin to tsmax 60-180 seconds Ss<br>Time maintained above: o Te min<br>Temperature(TL) 217°C E }<br>Time (t 60-150 seconds -<br>Peak/Classification Temperature(Tp) :<br>Time within 5°C of actual Peak : Can -<br>Temperature (tp 20-40 seconds —— t 25°C to Peak ——<br>6°C/second max. Time ——><br>**----- End of picture text -----**<br>


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. 

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Standard Packaging P/N Explanation and Ordering Information<br>oat it = inches dia. Reel, 8mm 0ZCH OXXX xX X Xx<br>OZCHOOOSFF2E wide tape, 4mm pitch, PTC seri |<br>OZCHOOZCH= — O O20FF220FF2E = | nk Ooo-286  nnpart_3). 0ZCH,1210 Size<br>OZCHO035FF2G p | HOLDRefer to  RatingPart Number and IH Rating in Electrical Characteristics Table on P.1.<br>4,000 Electrical Characteristics<br>OZCHO075FF2G F = Standard Design<br>A to Z (except F) = Special, customer spec, DCR sort, etc.<br>OZCHOO7SAF2E Mechanical Features<br>F = Standard Design<br>OZCHO200FF2E A to Z (except F) = Special, customer spec, lead forming, etc.<br>Tape& Red Qty Sw”?<br>See standard packaging<br>**----- End of picture text -----**<br>


ao Bente Specifications subject to change without notice ARES > POWER re: See yee Bel Fuse Inc. +1 201.432.0463 eee 206 Van Vorst Street techhelp@belf.com “Se =~ abel group Jersey City, NJ 07302 USA belfuse.com 

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