# PTC RESETTABLE FUSE, 1.85A, 60VDC, TH

![Product image](https://novapart.co/image/farnell:2914700/)

**URL**: https://novapart.co/products/0ZRP0185FF1A/ptc-resettable-fuse-185a-60vdc-th
**SKU**: 0ZRP0185FF1A
**Manufacturer**: BEL FUSE
**Category**: Circuit Protection || Thermistors || Resettable Fuses || Radial Leaded PPTCs
**Price**: €0.2460
**Stock**: 10+
**Lead Time**: 2 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Height | 18.8mm |
| Length | 13mm |
| Thickness | 3.6mm |
| Fuse Shape | Rectangular |
| Lead Spacing | 5.1mm |
| Time To Trip | 12.6s |
| Product Range | 0ZRP Series |
| Voltage Rating | 60VDC |
| Holding Current | 1.85A |
| Tripping Current | 3.7A |
| Current Rating Max | 40A |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2914700/)

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## OZRP Series RoHS 2 Compliant & Halogen-Free 

## Application 

## Wide variety of electronic equipment 

## Product Features 

Solid state, Radial leaded product ideal for up to 6(OVDC 

Operating (Hold Current) Range 500mA - 5A . Maximum Operating Voltage 60VDC 

- Temperature Range -40°C to 85°C 

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## Agency Approval 

**UL C** onditionsomponentof (Std.Acceptability: UL1434, File E305051) 

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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 =(PB HALOGEN FREE= FREE== [HF| 

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Electrical Characteristics (23) HALOGEN FREE= FREE== [HF|<br>Part Hold Trip Max Time to Tri; Max Rated Typical Resistance Tolerance<br>BulNumber Current | Current P | Current | Voltage | Power | min |Rimax| Approvals<br>Ou a | ita | A_| TimeSec | Imax,a | vmax, Vdc | Pd,W | Ohms | Ohms | efAXus<br>OZRPOOSOFFIE | 0.50 | 1.00 | 600 | o8 | 40 | 60 | 1.00 | 0320 | 0.900<br>B\OZAPOOGSFFIE | 0.65 (130 | 800 | 10 | 40 | 60 | 1.25 | 0.260 | 0.720<br>OZRPOO7SFFIE | 0.75 | 1.50 | 600 | 15 | 40 | 60 | 140 | 0.200 | 0640 | Y |<br>D|OZAPOOSOFFIE | 0.90 | 180 | 800 | 20 | 40 | 60 | 150 | o190 | 052 | Y<br>LE OZRPO110FFIE | 1.10 | 220 | 800 | 30 | 40 | 60 | 220 | 0170 | 0470 | YY<br>F |OZAPOISSFFIA | 1.35 | 2.70 | 800 | 45 | 40 | 60 | 230 | o110 | 0370<br>OZRPOIGOFFIA | 1.60 | 3.20 | 820 | 90 | 40 | 60 | 240 | 0100 | 0320 | Y |<br>H|OZAPO1SSFFIA | 1.85 | 370 | 9.25 | 126 | 40 | 60 | 260 | 0060 | 0250 | Y<br>| [OZRPO25OFFIAOZRPOSOOFFIA | [250] | 5.00 | 1250 | 156 | 40 | 60 | 280 | 0040 | 0140 | YY<br>_K | 3.00 | 6.00 | 1500 | 198 | 40 | 60 | 3.20 | 0.030 | 0.080<br>|OZRPO375FFIA 1875 | 220 | 40 | 60 | 340 | 0.017 | 0.060<br>OZRPO400FFIA | 4.00 | 8.00 | 20.00 | 240 | 40 | 60 | 370 | oo14 | 0060 | |<br>_M[OZRPOSOOFFIAIH Hold Current-maximum| [5.00] | 10.00current | 25.00at which| the280device| will40not trip| in still60air at 23°C.| 500 | 0012 | 0050 |<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>**----- End of picture text -----**<br>


Specifications subject to change without notice 

Mnpigtteaed POWER tiatth ie SOLUTIONS & el Pid PROTECTION eS oe *S8hH eS" ~~ a bel group 

+1 201.432.0463 Bel Fuse Inc. 206 Van Vorst Street Bel.US.CS@belf.com Jersey City, NJ 07302 USA _ belfuse.com/circuit-protection 

© 2018 Bel Fuse, Inc. 

OZRP Feb2018 1 / 4 

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Radial Leaded PTC<br>**----- End of picture text -----**<br>


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


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## 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 = 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 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. 

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Specifications subject to change without notice 

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ARS POWER<br>as e SOLUTIONS &<br>SOFeee PROTECTION<br>*S8hH eS" ~~ a bel group<br>**----- End of picture text -----**<br>


1 201.432.0463 206 VanBelVorst Fuse Stre In **e** t. Bel.US.CS@belf.comoT eet ese Jersey City, NJ07302 USA _ belfuse.com/circuit-protection 

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

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


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## RoHS 2 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 208E. Insulating coating Flame retardant epoxy, meets UL-94-V-0 requirements. 

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PTC Marking<br>“bel” or “b”, , lH code and “RP” .<br>Product Dimensions<br>All dimensions in mm.<br>a ll<br>ai rt | | Max | Max | Typical | Min | Max | Typical |<br>B B | _ozrpoosorF | 1 | 7.10 |11.43| 51 | 76 | 356 | 1.1 |<br>J 6 | _ozrpoossFF | 1 | 7.11 |12.20| 51 | 7.6 |a56| 1.1 |<br>_# _? |D | ozrpoo 7sFsor F | 1 | 7.87 |1 3.97|220| 5 .11 | 7 .66 | 356 | 1.1 |<br>aac! ae F tar | — e Ome ETF | ozrpoissFF | 3 |10.20|17.00| 51 | 76 |3e1| 14 |<br>F ozaporeorr | 3 |12.20/1830| 51 | 76 |as1| 14 |<br>Fig.1 Fig.2 Fig.3 | ozrpoissFF | 3 |13.00|18.80| 5.1 | 76 | 3.01 | 14 |<br>Lead |_ozrPozsoFF | 3 |14.00|20.60| 5.1 | 7.6 |3.00| 1.4 |<br>® Size :24AWG Lead Size : 20AWWG Lead Size : 20AWG | ozRPosoorF | 3 |16.50|21.20| 5.1 | 7.6 |3.00| 14 |<br> 0.51 mm Diameter ® 0.81 mm Diameter ® 0.81 mm Diameter | ozrpos7sFr | 3 |16.50|2520| 102 | 76 |3.00| 14 |<br>| ozRPoaoorF | 3 |21.00|24.90| 10.2 | 7.6 |3.00| 14 |<br>Thermal | ozrposoorF | 3 |24.10|29.00| 10.2 | 76 |3.00| 14 |<br>Derating Curve Cautionary Notes<br>1. Operation beyond the specified maximum ratings or<br>improper use may result in damage and possible<br>2m Teper electrical arcing and/or flame.<br>e Pt Tt tt tt pt te Pt te 2. These Polymer PTC (PPTC) devices are intended for<br>£ PT Tt | tT tt tT te pt tt tT Pt Tt th hr rT protection against occasional overcurrent/<br>3 a eee eee overtemperature fault conditions and may not be<br>= eee eee eee prolonged fault conditions are anticipated.<br>z ee 3. Avoid contact of PTC device with chemical solvent.<br>3 im LLL ee —————E—_<br>2 pt tt tt tt tT tp PSA Pe! so . .<br>3<= eePt ee ee eeHHee eePSeee eeeHH] 4. Thesecircuits PTC with devices a large may inductance, not~  be suitable as the PTC for use trip in can<br>a —_eEE—E—EE—E_——_e_<br>3) Pt tt tt Pte tt tt age.<br>= pi tt tt tt tt | tp 5. Not recommended for use on potted or conformal<br>8 ++ + + +} + + ++ +--+ + + coated PCB's. Restriction of free air flow could affect<br>e COOeee) | gece pertormance anc/or result in device failure.<br>-40 -20 0 20 40 60 80 6. In the “IndeterminateginP e rformanceering.  / grey zone”,<br>Ambient Temperature(‘C) tripping may occur but cannot be relied upon. For<br>special circumstances considering use within this<br>region, consult Bel Fuse Engineering.<br>Specifications subject to change without notice<br>re<br>ESHER POWER<br>ceaise:@taniaaise:@tania@taniatania “4aa eC See yee yee Bel Fuse Inc. +1 201.432.0463<br>ve oP 206 Van Vorst Street Bel.US.CS@belf.com<br>“Se a bel group group Jersey City, NJ07302 USA _ belfuse.com/circuit-protection<br>**----- End of picture text -----**<br>


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

## [HF]@ OZRP Series Fuse 

## OZRP Series RoHS 2 Compliant & Halogen-Free 

## Soldering Parameters 

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Lead-free Wave Soldering Profile<br>[Wave SolderParameter |<br>A ing preheat typical 1 - 2°C / second<br>«28D<br>PeoktemperateTp<br>Time win +0°0/-5°6 of actual peak lopraire<br>5 or 10 seconds, see the table above.<br>—_ 260 Fee SS Sts— Fz<br>oO ro 7 OND WAVE<br>Sa 1 ST WAVE i<br>lu une 5°C/SEC<br>er<br>— ' !<br>= 200°C/SEC - 4 '<br>Pm) P23 4<br>beea aap saa th ins<br>= io H ROISEC<br>wi ' ' ' '<br>od ‘ia worsec 'fff1 '' !! !,!<br>15 100<br>sec<br>TIME (SEC)<br>Standard Packaging P/N Explanation and Ordering Information<br>ee<br>P/N Code| Pes/Reel] P/N Code SERRE<br>OZRPOOSOFF PTC series P ARK RAK<br>- OZRP Series<br>OZRPOO75FF | HOLD Rating<br>OZRPOOSOFF | 3000 | 1£ | 1500 | 2B I Refer to Part Number and IH Rating in Electrical Characteristics Table on P.1.<br>OZRPO110FF | 3000 | 1£ | 1500 | 2B Electrical Characteristics<br>OZRPO135FF F = Standard Design<br>. A to Z (except F) = Special, customer spec, DCR sort, etc.<br>OZRPO185FF Mechanical Features<br>OZRPO250FF F = Standard Design<br>_ A to Z (except F) = Special, customer spec, lead forming, etc.<br>OZRPOSOOFF Tape & Reel ty<br>See standard packaging<br>ao Bente Specifications subject to change without notice<br>**----- End of picture text -----**<br>


## Standard Packaging 

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ao Bente<br>REESE POWER<br>eee<br>*S8EES" ~~ a bel group<br>**----- End of picture text -----**<br>


206 Van Vorst Street Bel.US.CS@belf.com Jersey City, NJ 07302 USA __ belfuse.com/circuit-protection 

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



## Links

- [View this product on Novapart](https://novapart.co/products/0ZRP0185FF1A/ptc-resettable-fuse-185a-60vdc-th)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/bel-fuse/0zrp0185ff1a/ptc-resettable-fuse-1-85a-60vdc/dp/2914700)
---

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