Document
CB 72YA2B80B80R
Features
n Miniature Thermal Cutoff (TCO) device n Smallest body size in product family n Overtemperature and overcurrent protection for lithium polymer and prismatic cells n Controls abnormal, excessive current virtually instantaneously, up to rated limits n Wide range of temperature options n High corrosion resistance withstand
Applications
Battery cell protection for: n Notebook PCs n Tablet PCs n Smart phones
CB Series Breaker (Thermal Cutoff Device)
Ratings
Specification
Trip Temperature Reset Temperature Maximum Breaking Current Maximum Voltage Minimum Holding Voltage Maximum Leakage Current Resistance
CB72ABB, CB72A1B 72 °C ± 5 °C
A-TYPE
CB77ABB, CB77A1B
CB82ABB, CB82A1B
77 °C ± 5 °C
82 °C ± 5 °C
40 °C min.
DC5 V / 50 A, 100 cycles
DC28 V / 25 A, 100 cycles
3 V @ 25 °C for 1 minute
200 mA max. @ 25 °C
5 mΩ max. / 2.2 mΩ typ.
Mini-breaker TCOs reset when the following conditions are met: • T he ambient temperature has dropped by 10 °C below the minimum trip temperature; and • P ower to the TCO has been cycled (off/on)
CB85ABB, CB85A1B 85 °C ± 5 °C
Agency Recognition
UL, cUL
Description File No. E215638 (UL60730)
TUV
(Pending)
Product Structure ARM
ARM TERMINAL
COVER PLATE
COVER BASE TERMINAL
PROJECTION
PTC BASE
BIMETAL CONTACT
DISC
PROJECTION
AVAILABLE WITH AND WITHOUT PROJECTIONS.
How to Order
Series Designator Trip Temperature (±5 °C) • 72 • 77 • 82 • 85 Arm Material A = Cu Alloy, High Current Type Terminal Type 1 = With Projection B = Without Projection Body Color B = Black
Circuit Diagram
NORMAL CIRCUIT
CB 77 A B B CIRCUIT AFTER OPENING
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
* RoHS Directive 2015/863, Mar 31, 2015 and Annex. ** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.
Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
2.5 ± 0.1 (.098 ± .004)
4.4 ± 0.1 (.173 ± .004)
2.5 ± 0.1 (.098 ± .004)
CB Series Breaker (Thermal Cutoff Device)
Product Dimensions
2.5 ± 0.1 (.098 ± .004)
4.4 ± 0.1 (.173 ± .004)
2.5 ± 0.1 (.098 ± .004)
2.0 ± 0.1 (.079 ± .004)
PROJECTION
CBxxA1B:
0.7 (.028
± ±
0.1 .004)
CBxxABB: N/A
1.0 ± 0.1 (.039 ± .004)
2.0 ± 0.1
(.079 ± .004)
2.5 ± 0.1
(.098 ± .004)
2.0 ± 0.1 (.079 ± .004)
PROJECTION
CBxxA1B:
0.7 (.028
± ±
0.1 .004)
CBxxABB: N/A
1.0 ± 0.1 (.039 ± .004)
2.0 ± 0.1
(.079 ± .004)
2.5 ± 0.1 (.098 ± .004)
0.8 ± 0.05 (.031 ± .002)
0.1 ± 0.01 (.004 ± .0004)
D IMENSIONS:
MM (INCHES)
Typical
Performan0.c8 ±e0-.05Current
(.031 ± .002)
vs.
Tempera0t.u1r±e0.C01urves
(.004 ± .0004)
24
22 20
18
Current (A)
16 14
12
10
8
6
4
2 0
20 30 40
50
60
Temperature (°C)
CB72A CB77A CB82A CB85A
(Low 67 °C avg.) (Low 72 °C avg.) (Low 77 °C avg.) (Low 80 °C avg.)
70 80 90
The above curves were derived from placing test samples in an oven at 25 ℃, 40 ℃, 60 ℃ and so on, increasing current flow through the sample at a rate of 0.1 A/minute and recording the current value when the sample trips.
Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
CB Series Breaker (Thermal Cutoff Device)
Wiring Recommendations This is not a surface mount device for reflow soldering. Therefore, Ni tab wiring should be accomplished by either resistance or laser welding. Solder connections should be avoided.
Typical Part Marking
MANUFACTURER’S INTERNAL CODE
(ALPHANUMERIC CHARACTER)
00 Y288R CB 72ABB
SERIES DESIGNATOR TRIP TEMPERATURE - °C
(72, 77, 82, 85, 90) ARM MATERIAL (A = Cu ALLOY)
MANUFACTURER’S TRADEMARK DATE CODE: MONTH (1~9, X, Y, Z) DAY YEAR MACHINE NO. ROMAN NUMERAL (I, II, III, ETC.) or ARABIC NUMERAL (1, 2, 3, ETC.) = OKAYAMA FACTORY ALPHABET = SHIGA FACTORY BODY COLOR (B = BLACK) TERMINAL TYPE (1 = WITH PROJECTION B = WITHOUT PROJECTION)
Standard Packaging Specifications
Plastic Bag.......................................................................................................................................................................1,000 pcs. (fixed) Inner Box.....................................................................................................................................................................