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L21 Datasheet(PDF) 1 Page - Bourns Electronic Solutions

Part No. L21
Description  Line Feed Resistors w/Thermal Fuse
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Manufacturer  BOURNS [Bourns Electronic Solutions]
Direct Link  http://www.bourns.com
Logo BOURNS - Bourns Electronic Solutions

L21 Datasheet(HTML) 1 Page - Bourns Electronic Solutions

  L21 Datasheet HTML 1Page - Bourns Electronic Solutions  
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Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
REV. A 06/05
L21 Line Feed Resistors w/Thermal Fuse
Product Characteristics
Resistor Tolerance
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
Environmental Characteristics
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
Functional Characteristics
ITU-T K.20
Lightning Surge ................................................................1 KV
Power Induction........................................................600 Vrms
Power Contact..........................................................230 Vrms
UL 497A
Physical Characteristics
Body Style ..........................................................Open Frame SIP
Body Material...........................................................96% Alumina
Lead Frame Material..................................Copper, solder coated
Standard Parts Available Off the Shelf
........................................................5.6, 20, 30, 50, 100 ohms
How To Order
L21 A100AA
Model
(L21 = LFR w/Thermal Fuse)
Resistor Tolerance
• A5R6AA = 5.6 ohms
• A020AA = 20 ohms
• A030AA = 30 ohms
• A050AA = 50 ohms
• A100AA = 100 ohms
Custom values available; contact factory.
Features
Thick film technology
Bourns patented thermal fuse
Fail safe
Protection to ITU-T K.20
Applications
Analog Line Cards
CPE (Customer Premises Equipment)
DDS (Digital Data Systems)
DLC (Digital Loop Carriers)
T1/T3 Transmission Lines
ISDN
R1
1
4
2
R2
6
9
8
F1
F2
25.75
(1.010)
MAX.
TYP.
2 PLCS.
2.54
(.100)
2.54
(.100)
TYP.
3 PLCS.
5.08
(.200)
MAX. SEATED
HEIGHT
12.32
(0.485)
THICK
0.51 ±0.25
(.020 x .010)
DIA. HOLE
0.81
(.032)
3.175 + 0.64/-0.13
(.125 + .025/-.005)
REF.
0.84
(.033)
MAX. THICKNESS
3.18
(.125)
Circuit Schematic
Product Dimensions
Circuit Protection Division
Asia-Pacific:
Tel: +886-2 2562-4117
Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555
Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500
Fax: +1-951 781-5700
www.bourns.com
DIMENSIONS:
MM
(INCHES)


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