0ZCA BEL
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1206 Chip
ib — | Surface Mount PTC wercmnsmcni into OZCA Series @8 0ZCA Series Fuse & Ws c 6-60V (per table) g@ RS 40°C to 85°C ee, C y TUV (Std. EN60738-1-1 , Cert. R50102117) ij UL Component (Std. UL1434, File E305051) UL Conditions of Acceptability: = 1.These devices have been investigated for Not as shown, see marking code drawing use in safety circuits and are suitable as a limiting device. A F limit the current to 8 amps within 5 eI his idenely baste, seconds , per ANSI/NFPA 70, “National
1206 Chip Size , Fast Trip Time, Low DCR Resistance
Operating (Hold Current) Range HALOGEN FREE # [HF] 50mA - 1.50 LEAD vaee-(PB) Electrical Characteristics (23°C) a ee ETS | | ne oases c Volt Pe Part Number werent | current| Time | onan: | Power ten | tines | A | ja [ima | a | sec | imax. |ymax. vie] paw | ohms | ohms | zJozcaonosrrae| 00s | 045 | 02s | 150 | 1 | so | 04 | soo | sow | vy |v | alozcaoosorr2e| o10 | 025 | aso | to | | eo | oa | x60 | 1500 | y |v | pozcaomzorF2e| 020 | 040 | 000 | 00s | 10 | 20 | 04 | ooo | aso | y |v _| [clzcaaserac| 035 | 075 | 000 | ox | 40 | 1 | 04 | a00 | 1am | vy |_| [pzcacosorrac| oso | 100 | e00 | oso | 40 |e | 04 | omso | 7m | vy | y | [= lozcasorserac| 075 | 150 | 000 | 02 | wo | 6 | 08 | co | 0am | vy | y_| |r lazcantoorr2e| 100 | 120 | 200 | ox | wo | 6 | 06 | aos | o2w | vy |v _| Jmzcaorsorr2e| 110 | 220 | 00 | 030 | 0 | 6 | as | ooo | om |v | v_| lazcanssorrec| 180 | 200 | 200 | 100 | sw | 6 | 08 | ooo | or | v | v_| TH Hold Current-maximum current at which the device will not trip in still air at 23°C. Ir 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. Rimax Maximum device resistance at 23°C, 1 hour after initial device trip, or after being soldered to PCB in end application. Specifications subject to change without notice Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 « Tel: 201-432-0463 - Fax: 201-432-9542 - E-Mail: belfuse@belf.com Website: www.belfuse.com
Surface Mount PTC RoHS8 Compliant & Halogen Free 0ZCA Series HFG 0ZCA Apr2013¢ 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 and 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*2M, 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. APTC with a Typical Power of 1 watt protecting a circuit using a 60V supply will demonstrate an apparent, tripped resistance "R" of: R = 60°2/1 = 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. (See Elec. Characteristics Table for P/N - Curve Correlation) A B ¢ db EFGH 100 a SS SSS SS SSS SS ee Ok AW wo ALAIN AN MET TT a RR RES = SSS = PN ANA NOAA AA 5 1 EN EENEENNEAN ANAT iS S = PT INCENSE Fp ee eS SSNS NCS SS SESS ON SRS SSE p—__f fT NSS SANS i a UE SSSA SSS SSE ER SSSISSESEEETH a A GO ON OO GG OO GO oor L—_1 [TTT NUT Tri PT ETT o1 1 10 100 Fault Current (A) Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 + Tel: 201-432-0463 + Fax: 201-492-9542 - E-Mail: belfuse@belf.com Website: www.belfuse.com
Ib Ee | Surface Mount PTC RoHSB Compliant & HalogernFree 0ZCA Apr20120 OZCA Series HA® Thermal Derating Curve Cautionary Notes i ir 41. Operation beyond the specified maximum ratings Hold & Trip Current and Thermal Derating Curve Oe RapTOner cee Thay (enki Gerace aed poses electrical arcing and/or flame. 300% 2. These Polymer PTC (PPTC) devices are intended
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& oe overtemperature fault conditions and may not be —£ * | suitable for use in applications where repeated andi ae a De e p d prot or prolonged fault conditions are anticipated. 2 5 200% — 3. Avoid contact of PTC device with chemical solvent. = £ nde 4 Let ET HI | Prolonged contact may adversely impact the PTC 3 ‘ ance erformance. d te performa Pp =O 15m Poesy ina = 4, These PTC devices may not be suitable for use in of LI | | {| circuits with a large inductance, as the PTC trip can SE j00% Hail generate circuit voltage spikes above the PTC rated a bo a 5. These devices are intended for use in DC voltage 57 som Devic fal \\, tule l applications only. Use in AC voltage applications 2 a + psa should be first discussed with Bel Fuse engineering o 6. Not recommended for use on potted or conformal a % coated PCB's. Restriction of free air flow could affect ~40 20 ° 20 40 60 80 electrical performance andor result in device failure Ambient Temperature (‘C) Consult Bel Fuse engineering. 7. In the “indeterminate Performance / grey zone”, Hold Current Trip Current ‘special circumstances considering use within this region, consult Bel Fuse Engineering. All dimensions in mm. Figure 1 Figure2 —& 10.0.48mm) [ «© [ » JT « | Date o4 : [win [wax [in [max [in [ax | T T [ozcnowsrrae| + [ous [oes [ex [om |. | | Marking (Cee wrso-somm — [rzA000FE| 1 | 045 [eas | ove fom | | | [ozcxomorrae| + 04s [ors [es [ooo |. | | L L lozesossrrac| + [oas [ors [ex [oso]. | | ——a—4 —— a—— lozcaoworraa] + [ 04s [oss [oie [om [|| #.003foem nessa [zener] = [oe [aae [oat [om [oe | oa | Top and Bottom View Topand Bottom View [ozcaoiorrae| 2 | 04s | 190 | 038 | om | 070 | eas | = [ezcaovsorrae| 2 [04s | 100 | 025 | 000 | 010 | 0.5 | SideView —¢ SideView —¢ [ezeaotsorrac| 2 | oso | 140 | 02s | oso | 0.10 | os | The dimensions in the table below provide the recommended Be pad layout. b", ncode. Part Number IH Code a [am [nck [mom | inch [ aum | inch | | ozcaoozorr2e [| F | [so Lover [100 [oss [130 [ores | wzcaoosarras | —w——| s P s | ozcaoorsrrac [P| | ozcaovoorree [4 | Termination Pad Materials | ezcaonorrze [ek | L_ozcaotsorr2c [Ss | Matte Tin - Plated Copper Spectiialne: i. nities nde. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 - Tel: 201-432-0463 - Fax: 201-432-9542 - E-Mail: belfuse@belf.com Website: www.belfuse.com
Surface Mount PTC RoHS Compliant & Haloger-Froe 0ZCA Series @ 0ZCA Apr2013D Solder Reflow and Rework Recommendations ‘Average Ramp-Up Rate (Tsmax to Tp De eee Gridcal Zone] Preheat : <|h to Te ‘Temperature Min (Tsmin) 150 °C ft ee ‘Temperature Max (Tsmax) 200 *C 1 |: ee ‘Time (tsmin to tsmax) 160-180 seconds : [= ‘Time maintained above: = —— ‘Temperature(T,) 217 s Time (u) {60-150 seconds ee y~-- [Ramp-down] Peak/Classification Temperature(Tp):|260 ‘CS || ‘Time within 5°C of actual Peak : Goes | ‘Temperature (tp 20-40 seconds = d {25°C 10 Peak Figg Time 25°C_to Peak Temperature: [8 minutes max | Solder Reflow Due to " lead free / ROHS6 " 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 maximum ; paste thickness is 0.25mm. 4. Devices are compatible with standard industry cleaning solvents and methods. 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 [ PartNumber | Tape/Reel Qty] 4000,3000 or 2000 fuses OZCAQ005FF2E in 7 inches dia. Reel, O2CA OXXX XX XX 8mm wide tape, 4mm PTC series | Thru pitch, per EIA-481 OZCA, 1206 Size uivalent IEC-286 part 0ZCAQ020FF2E a e B 1HOLD Rating . Refer to Part Number and IH Rating in Electrical Characteristics Table on P.1. waoegees | Fe Standard Desi ozcAoo7SFF2G| 3,000 | AtoZ (oreopt}= Speci, customer spec, DER so OZCAO100FF2E| 3,000 ‘| Mechanical Features lozcactsorrac| 2000 | Tape & Reel Qty ‘See standard packaging Speciteations subject change without notice CORPORATE OFFICE FAR EAST OFFICE EUROPE OFFICE EUROPE Bel Fuse Inc. Bel Fuse Ltd. Bel Fuse Europe Ltd. Bel Stewart GmbH 206 Van Vorst Street 8/F Luk Hop Industrial Building Preston Technology Management Centre Industriestrasse 20 Jersey City, NJ 07302 8 Luk Hop Street Marsh Lane, Suite F15 61381 Friedrichsdorf Tel 201-432-0463 San Po Kong Preston, Lancashire, PR1 8UQ Germany Fax 201-432-9542 Kowloon, Hong Kong United Kingdom Tel 49-6172-9552-0 E-Mail: belfuse@belf.com Tel 852-2328-5515 Tel 44-1772-556601 Fax 49-6172-9552-40 Website: www. belfuse.com Fax 852-2352-3706 Fax 44-1772-561008