BK72 YAGEO | Alldatasheet

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Technical content

POSITIVE TEMPERATURE COEFFICIENT AC/DC POWER SUPPLY BK72 series RoHS compliant & Halogen free Product specification– September 01, 2023 V.3

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2 Positive Temperature Coefficient (PTC) Data Sheet

Description

The 72V series provides radial resettable overcurrent protection with holding current from 0.05A to 3.75A. This series is suitable for applications with higher working voltage up to 72V.

Features

■ Radial leaded devices. ■ Over-current protection ■ High voltage surge capabilities ■ Flame retardant epoxy polymer insulating material meets UL94 V-0 requirement. ■ Available in lead-free version. ■ Meets MSL level 1, per J-STD-020 ■ Operating Temperature: -40℃~+85℃

Applications

■ Load protection on wide range of low voltage power supply ■ Computer oeripherals ■ Computers ■ General electronice Part Number Code and Making BK 72 Lead Shape Z =Straight I =Inner Holding Current Rating Voltage Rating Brand BK - - Body Shape S =Square D =Circular

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2 H H BK72 Brand BK Voltage Rating XXX Holding Current Rating Dimensions (Unit: mm) A B FE C D DZ A B F C D DI E Part Number A B C D E F H Style.

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2

Electrical Characteristics

IH IT Vmax Imax Pd typ. Max. Time-to-trip Rmin R1max (A) (A) (VDC) (A) (W) (A) （S） (Ω) (Ω)

  • IH = Hold current: maximum current device will pass without tripping in 25℃ still air.
  • IT = Trip current: minimum current at which the device will trip in 25℃ still air.
  • VMAX = Maximum voltage device can withstand without damage at rated current.
  • IMAX = Maximum fault current device can withstand without damage at rated voltage.
  • RMAX = Maximum resistance of device in initial (un-soldered) state.
  • RMIN = Minimum resistance of device in initial (un-soldered) state.
  • Pd typ. = Typical power dissipation from device when in the tripped state at 25℃ still air.

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2 Polymeric PTC Selecting Guide ■ Determine the following operating parameters for the circuits:

  • Normal operating current (Ihold) ·Maximum interrupt current (Imax)
  • Maximum circuit voltage (Vmax) ·Normal operating temperature surrounding device (min℃/max℃) ■ Select the device from factor and dimension suitable for the application ■ Compare the maximum rating for Vmax and Imax of the PPTC device with the circuit in application and make sure the circuit’s requirement does not exceed the device rating. ■ Check that PPTC device’s trip time (time-to-trip) will protect the circuit. ■ Verify that the circuit operating temperature is within the PPTC device’s normal operating temperature range. ■ Verify that performance and suitability of the chosen PPTC device in the application. WARNING ■ Mechanical Stress
  • PPTC devices will undergo a thermal expansion during fault condition. If PPTC devices are installed or placed in an application where the space between PPTC devices and the surrounding materials (e.g., covering materials, packaging materials, encapsulate materials and the like) is insufficient, it will cause an inhibiting effect upon the thermal expansion. Pressing, twisting, bending and other kinds of mechanical stress will also adversely affect the performance of the PPTC devices, and shall not be used or applied. ■ Chemical Pollutants
  • Silicone-based oils, oils, solvents, gels, electrolytes, fuels, acids, and the like will adversely affect the properties of PPTC devices, and shall not be used or applied. ■ Electronic and Thermal Effect
  • PPTC devices are secondary protection devices and are used solely for sporadic, accidental over-current or over-temperature error condition, and shall NOT be used if or when constant or repeated fault conditions (such fault conditions may be caused by, among others, incorrect pin-connection of a connector) or over-extensive trip events may occur.
  • PPTC devices are different from fuses and, when a fault condition occurs, wil l go into high-resistance state and do not open circuit, in which case the voltage at such PPTC devices may reach a hazardous level.
  • Operation over the maximum rating or other forms of improper use may cause failure, arcing, flame and/or other damage t o the PPTC devices.
  • Conductive material contamination, such as metal particle, may induce shortage, flame or arcing.
  • Due to the inductance, the operation circuits may generate a circuit voltage (Ldi/dt) above the rated voltage of PPTC devices, which shall not be used under such circumstances. ■ General
  • Customers shall evaluate and test the properties of PPTC devices independently to verify and ensure that their individual applications will be met.
  • The performance of PPTC devices will be adversely affected if they are improperly used under electronic, thermal and/or mechanical procedures and/or conditions non-conformant to those recommended by manufacturer.
  • Customers shall be responsible for determining whether it is necessary to have back-up, failsafe and/or fool -proof protection To avoid or minimize damage that may result from extra-ordinary, irregular function or failure of PPTC devices.
  • Any and all responsibilities and liabilities are disclaimed if any item under this notice of warning is not complied with.

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2 Thermal Derating Curve -40.00 -20.00 0.00 0.00 50.00 100.00 150.00 200.00 Device Ambient Temperature (℃) Percentage of Rated Current 20.00 40.00 60.00 80.00 Thermal Derating Chart – IH (A) Part Number Maximum Ambient Operating Temperatures (℃) -40 -20 0 25 30 40 50 60 70 85

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2 Test Procedures and Requirement Items Test Conditions Accept/Reject Criteria Resistance In still air @25℃ Rmin ≤ R ≤ Rmax Time to Trip Specified current, Vmax, 25℃ T ≤ max. Time to trip (Ttrip) Hold Current 30 min, at IH No trip Trip Cycle Life Vmax, Imax, 100 cycles No arcing or burning Trip Endurance Vmax, 24hours No arcing or burning Typical Time-to-Trip Charts @25℃ 0.1 10 100 0.001 0.01 0.1 1000 Fault Current (A) Time to Trip (s) A B CDE F GH I KJ A=BK72-005 B=BK72-010 C=BK72-017 D=BK72-020 E=BK72-025 F=BK72-030 G=BK72-040 H=BK72-050 I=BK72-065 J=BK72-075 K=BK72-090 L=BK72-110 M=BK72-135 N=BK72-160 O=BK72-185 P=BK72-250 Q=BK72-300 R=BK72-375 100 ML NO QP R Storage Recommendations ■ Storage Temperature: -10℃~+40℃ ■ Relative Humidity: ≤80%RH ■ Keep away from corrosive atmosphere and sunlight. ■ Period of Storage: 1 year.

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2 Wave Soldering Recommendation Parameters 0 50 150 Time (s) Temperature (℃) 100 150 200 100 200 300 250 100℃~130℃ 245℃~260℃ 3~5s Soldering Cooling Items Conditions Pre-Heating Zone Refer to the condition recommended by the flux manufacturer. Maximum ramping rate should not exceed 4℃/sec. Soldering Zone Maximum solder temperature should not exceed 260℃ Cooling Zone Forced cooling Manual Soldering Recommendation Parameters Items Conditions Soldering condition The highest power of the manual soldering iron should be 30W or less, soldering temperature should not be higher than 280℃. Soldering time The soldering time should be kept within 3 seconds, otherwise it might cause insulation layer cracking, and increased part resistance. Soldering position The distance on the leads between the soldering point and bottom of the PPTC body should be equal or greater than 4mm. Other The soldering iron should n ot contact the PPTC body except the leads. If the soldering conditions are kept to lower temperature, less time and larger distance, the outcome of the soldering will be better. Mechanical Characteristics Items Specifications Test Conditions/Methods Tensile strength No visible damage 1.0Kgf, 10 seconds Bending strength No visible damage 0.5Kgf, 90°, 3 times Vibration No visible damage Freq: 10-55Hz, Amp: 0.75mm, 1min

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2 Reliability Test Items Specifications Test Conditions/Methods Solder ability No visible damage，Solder OK, Solder area ≥95% 245±5℃, 2±1s, dipping depth=0.5inch max from the body Resistance to soldering heat No visible damage, Electrical OK, │△R/R0│≦50% 260±5℃, 10+2/-0s Damp heat, steady state No visible damage, Electrical OK, │△R/R0│≦20% 40±2℃, 90~95 % RH, total 48Hrs, after 4Hrs test electrical parameter Temperature cycling No visible damage, Electrical OK, │△R/R0│≦20% Ta＝-10+0/-1℃ 30min, Ta＝70+1/-0℃ 30min, 5cycles, after 1hr test electrical parameter Packaging Bag A BLabel Part Number Dimension A×B (mm) Quantity BK72-005 120×150 1000pcs/bag 6000pcs/box BK72-010 BK72-017 BK72-020 BK72-025 BK72-030 BK72-040 BK72-050 BK72-065 Inner Box 253mm 65mm 160mm BK72-075 120×150 500pcs/bag 3000pcs/box BK72-090 BK72-110 BK72-135 BK72-160 150×200 500pcs/bag 2000pcs/box BK72-185 BK72-250 BK72-300 150×200 200pcs/bag 800p cs/box BK72-375 BK72-500

POSITIVE TEMPERATURE COEFFICIENT Circuit Protection www. yageo .com Sep. 01, 2023 V.2 LEGAL DISCLAIMER YAGEO, its distributors and agents (collectively, “YAGEO”), hereby disclaims any and all liabilities for any errors, inaccuracies or incompleteness contained in any product related information, including but not limited to product specifications, datasheets, pictures and/or graphics. YAGEO may make changes, modifications and/or improvements t o product related information at any time and without notice. YAGEO makes no representation, warranty, and/or guarantee about the fitness of its products for any particular purpose or the continuing production of any of its products. To the maximum exten t permitted by law, YAGEO disclaims (i) any and all liability arising out of the application or use of any YAGEO product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for a particular purpose, non -infringement and merchantability. YAGEO products are designed for general purpose applications under normal operation and usage conditions. Please contact YAGEO for the application s listed below which require especially high reliability for the prevention of defects which might directly cause damage to the third party's life, body or property: Aerospace equipment (artificial satellite, rocket, etc.), Atomic energy -related equipment, Aviation equipment, Disaster prevention equipment, crime prevention equipment, Electric heating apparatus, burning equipment, Highly public information network equipment, data -processing equipment , Medical devices, Military equipment, Power generation co ntrol equipment, Safety equipment, Traffic signal equipment, Transportation equipment and Undersea equipment, or for any other application or use in which the failure of YAGEO products could result in personal injury or death, or serious property damage. P articularly YAGEO Corporation and its affiliates do not recommend the use of commercial or automotive grade products for high reliability applications or manned space flight. Information provided here is intended to indicate product specifications only. Y AGEO reserves all the rights for revising this content without further notification, as long as products are unchanged. Any product change will be announced by PCN.