Features
Applications
■ Thick film technology
■ Bourns patented thermal fuse
■ Fail safe
■ Analog Line Cards
■ CPE (Customer Premises Equipment)
■ DDS (Digital Data Systems)
■ DLC (Digital Loop Carriers)
■ T1/T3 Transmission Lines
■ ISDN
■ Protection to BELLCORE GR-1089-CORE
L11B Line Feed Resistors w/Thermal Fuse & Overvoltage Protectors
Circuit Schematic
Product Characteristics
Resistor Tolerance
OVERVOLTAGE
PROTECTOR
20 ohms to 100 ohms ..................................................... 1 ꢀ
5.6 ohms ......................................................................... 5 ꢀ
Ratio Tolerance
20 ohms to 100 ohms .................................................. 0.5 ꢀ
5.6 ohms ...................................................................... 2.5 ꢀ
Operating Temperature.......................................-40 °C to +85 °C
R1A
R1B
R2A
R2B
F1
F2
Environmental Characteristics
1
9
5
7
8
11
15
TESTS PER MIL-STD-202
Humidity ..........................................................................103B
Solderability.....................................................................208D
Thermal Shock ................................................................107B
Resistance to Solvents ......................................................215
Resistance to Solder Heat ..............................................210D
Flammability...................................................................UL 94V-0
IEC 695-2-2
Product Dimensions
MAX. SEATED
HEIGHT
12.19
(0.480)
53.59
(2.110)
MAX.
Functional Characteristics
Bellcore GR-1089-CORE
ITU-T K.20
Lightning Surge................................................................1 KV
Power Induction........................................................600 Vrms
Power Contact..........................................................230 Vrms
UL 497A
0.84
(.033)
REF.
5.08
(.200)
TYP.
FCC Part 68.302 Rules (d) and (e)
8.89
(.350)
3.175 + 0.64/-0.13
(.125 + .025/-.005)
Physical Characteristics
10.16
(.400)
TYP.
2 PLCS.
2 PLCS.
0.51 0.25
(.020 x .010)
2.54
Body Style ..........................................................Open Frame SIP
Body Material...........................................................96ꢀ Alumina
Lead Frame Material..................................Copper, solder coated
Standard Parts Available Off the Shelf
THICK
(.100)
TYP.
2 PLCS.
0.81
(.032)
DIA. HOLE
..................................................5.6, 10, 20, 30, 50, 100 ohms
3.81
(.150)
MAX. THICKNESS
MM
(INCHES)
DIMENSIONS:
How To Order
L11B 100AA
Model
(L11B = LFR w/Thermal Fuse and Overvoltage Protectors*)
Resistor Tolerance
• 5R6AA = 5.6 ohms
• 010AA = 10 ohms
• 020AA = 20 ohms
• 030AA = 30 ohms
• 050AA = 50 ohms
• 100AA = 100 ohms
Circuit Protection Division
Custom values available; contact factory.
*Specify Overvoltage Protection:
Asia-Pacific:
Tel: +886-2 2562-4117
Fax: +886-2 2562-4116
• Specify peak pulse current rating
• Specify minimum turn on voltage
Europe:
Tel: +41-41 768 5555
Fax: +41-41 768 5510
• Provide schematic showing desired configuration
The Americas:
Tel: +1-951 781-5500
Fax: +1-951 781-5700
www.bourns.com
REV. A 06/05
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.