0ZC0260AF2B Surface Mount PTC 1812 SMT PPTC 2.60 Ih 13.2V Integrated Circuits ICs
Surface Mount PTC
,0ZC0260AF2B
,PTC Integrated Circuits ICs
OZC0260AF2B Surface Mount PTC
| Bel | |
| Product Category: | Resettable Fuses - PPTC |
| RoHS: | Details |
| 0ZCG | |
| PCB Mount | |
| SMD/SMT | |
| 2.6 A | |
| 13.2 VDC | |
| 5 A | |
| 100 A | |
| 50 mOhms | |
| 1812 (4532 Metric) | |
| - 40 C | |
| + 85 C | |
| Reel | |
| Cut Tape | |
| MouseReel | |
| Brand: | Bel Fuse |
| Height: | 1.05 mm |
| Length: | 4.55 mm |
| Moisture Sensitive: | Yes |
| Product Type: | Resettable Fuses - PPTC |
| Subcategory: | PPTC Resettable Fuses |
| Type: | PTC Resettable Fuses |
| Width: | 3.24 mm |
| Unit Weight: | 0.001270 oz |
Type 0ZCG Series 2 / 4 Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 USA +1 201.432.0463
Bel.US.CS@belf.com belfuse.com/circuit-protection © 2023 Bel Fuse, Inc. Rev. 0ZCG Apr2023 PTC’s –
Basic Theory of Operation / “Tripped” Resistance Explanation A Bel PTC consists of a block of polymeric
material containing conductive carbon granules which is sandwiched between two conductive metal plates.
When this polymer block reaches approximately 125C, either due to current passing through it via conductive
chains of carbon particles or due to an external heat source; it swells volumetrically. This expansion breaks
apart a majority of the chains of carbon granules that run randomly between the two conductive plates. This
behavior results in a sharp increase in resistance across the two plates which all but eliminates current flow
through the device, allowing just enough residual current flow to maintain the block’s internal temperature at
125C. Once this “tripped” state current is cut off, the polymer brick cools and shrinks to its original size, thereby
allowing its broken carbon chains to reestablish themselves and permit the part to return to its low resistance
state. Once cooled to room ambient, the PTC will once again exhibit a resistance less than its “R1max” rating.
At currents below the device IHOLD rating, AND at temperatures below 100C, the PTC maintains a resistance
value below its R1 MAX rating.
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 = E²/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 = 60²/1 = 3,600 ohms This same tripped device when
used to protect a 12V circuit would now present an apparent resistance of: R = 12²/1 = 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.
Operating (Hold Current) Range
100mA - 3A
Product .Features
- 1812 Chip Size, Fast Trip Time, Low DCR Resistance
- Full compliance with EU Directive 2011/65/EU and amending directive 2015/863
- AEC-Q Compliant
- Meets Bel automotive qualification* *
- Largely based on internal AEC-Q test plan
Maximum Voltage
6 - 60V (per table)
Temperature Range
-40°C to 85° C
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Description
The NCP4200 is an integrated power control IC with an I2Cinterface. It combines a highly efficient, multi−phase,
synchronousbuck switching regulator controller with an I2C interface, whichenables digital programming of
key system parameters to optimizesystem performance and provide feedback to the system.
It uses an internal 8−bit DAC to read a Voltage Identification (VID)code directly from the processor, which is used to
set the outputvoltage between 0.375 V and 1.6 V.
This device uses a multi−mode PWM architecture to drive thelogic−level outputs at a programmable switching
frequency that canbe optimized for VR size and efficiency.
The NCP4200 can beprogrammed to provide 2−, 3−, or 4−phase operation, allowing for theconstruction of up
to four complementary buck−switching stages. TheNCP4200 supports PSI, which is a Power Save Mode.The
NCP4200 includes an I2C interface which can be used toprogram system set points such as voltage offset,
load−line and phasebalance and output voltage. Key system performance data, such asCPU current, CPU
voltage, and power and fault conditions can also beread back over the I2C from the NCP4200.
The NCP4200 operates over the industrial temperature range of−40°C to +125°C and is available in a 40
Lead QFN package.
Features
• Selectable 2−, 3−, or 4−Phase Operation at Up to 1.5 MHz per Phase
• I2C Interface − Enables Digital Programmability of Set Points andRead−back of Monitored Values
• Logic−Level PWM Outputs for Interface to External HighPower Drivers
• Fast−Enhanced PWM for Excellent Load Transient Performance
• Active Current Balancing Between All Output Phases
• Built−In Power−Good/Crowbar Blanking Supports On−The−Fly(OTF) VID Code Changes
• Digitally Programmable 0.375 V to 1.6 V Output Supports BothVR11 and VR11.1 Specifications
• Programmable Short−Circuit Protection with ProgrammableLatchoff Delay
• Supports PSI – Power Saving Mode During Light Loads
Applications
• Desktop PC Power Supplies for VRM Modules
