PL
IA
NT
Applications
■ Fully encapsulated
■ Line matching
■ Low profile
■ Fax modem
10
01
-B
1
CO
M
■ High dielectric strength
LM
-N
P-
*R
oH
S
Features
■ Ten models available
■ Ex stock
■ Competitively priced
■ RoHS compliant*
LM-NP/-LP 1000 Series - Line Matching Transformers
Note
Product Dimensions
2.5
(.100)
WHITE MARK
4 3 2 1
12.7 + 0.15
(.500 + .006)
17.7 + 0.2
(.700 + .008)
5 6 7 8
2.5
(.100)
0.6
DIA
(.023)
17.7 + 0.2
(.700 + .008)
The LM-NP/-LP-1000 Series Line
Matching Transformers meet the return
loss specifications of BS 6305.
It is important, however, to use the
circuit recommended by BS 6305 for
return loss measurements.
The LM-NP-1000 Series are EN 41003
approved.
How To Order
LM-NP SERIES
12.6 + 0.2
(.496 + .008)
3.0
(.118)
3.0
(.118)
5.04
(.200)
* * *
LM-xP-100x0xx L
LM-LP SERIES
and LM-NP-1001-B1
10.5 + 0.2
(.413 + .008)
Model
Termination
L = Tin only (RoHS Compliant)
3.2 ± 0.8
(.126 ± .031)
5.04
(.200)
*:pitch = 1/10 " = 2.54 (.100) (for number of pins see pin assignment)
DIMENSIONS:
MM
(INCHES)
Pin Assignment and Winding Configurations (Bottom View)
LM-NP-1001-B1L
LM-LP-1001L
LM-NP-1002L
LM-LP-1002L
LM-NP-1003L
LM-LP-1003L
LM-NP-1004L
LM-LP-1004L
LM-NP-1005L
LM-LP-1005L
one-winding
center-tapped*
one winding
split*
both windings
center-tapped
both windings
split
* Due to the unique design and the most advanced manufacturing techniques the 2 coils are fully identical, meaning there is no real
primary nor secondary winding. Depending on the application, the transformers can be used either way.
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2002/95/EC Jan. 27, 2003 including Annex.
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.
LM-NP/-LP 1000 Series - Line Matching Transformers
Part Numbers And Specifications
Parameters
Unit
LM-NP
1001-B1L
LM-NP
1002L
LM-NP
1003L
LM-NP
1004L
LM-NP
1005L
25
25
LM-LP
1001L
LM-LP
1002L
LM-LP
1003L
25
25
600
600
600
Ω
600
H
2.8
2.8
2.8
2.8
(0.7, 0.7)
2.8
(0.7+0.7)
2.8
2.8
2.8
2.8
(0.7, 0.7)
2.8
(0.7+0.7)
Secondary
H
2.8
2.8
(0.7, 0.7)
2.8
(0.7+0.7)
2.8
(0.7, 0.7)
2.8
(0.7+0.7)
2.8
2.8
(0.7, 0.7)
2.8
(0.7+0.7)
2.8
(0.7, 0.7)
2.8
(0.7+0.7)
Primary
Ω
66
66
66
66
(33,33)
66
(33+33)
90
90
90
90
(45,45)
90
(45+45)
Secondary
Ω
66
66
(33,33)
66
(33+33)
66
(33,33)
66
(33+33)
90
90
(45,45)
90
(45+45)
90
(45,45)
90
(45+45)
Turns Ratio (≤ ±2 %)
—
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
Winding Configurations
—
—
one
winding
center
tapped
one
winding
split
both
windings
center
tapped
both
windings
split
—
one
winding
center
tapped
one
winding
split
both
windings
center
tapped
both
windings
split
Insertion Loss (at 2.0 kHz)
dB
≤ 1.5
≤ 2.0
Return Loss
dB
≥ 10.0
≥ 8.0
≥ 21.0
≥ 20.0
Transformer
(0.2 - 4.0 kHz)
In Networks
600
600
600
600
600
(150,150) (150+150) (150,150) (150+150)
600
25
25
Ω
DC-Resistance
(typical/±10 %)
25
600
25
°C
Impedance
Primary
(min./at 1.0 kHz)
Inductance
Primary
(min./at 0.2 kHz)
25
600
LM-LP
1005L
Ref. Temperature Data
Secondary
25
600
600
(150, 150) (150+150)
LM-LP
1004L
600
600
(150, 150) (150+150)
600
600
600
600
(150,150) (150+150) (150,150) (150+150)
Shunt Loss (typical)
kΩ
9.0
9.0
Frequency Response
(typ./0.2 - 3.5 kHz)
dB
- 0.3
- 0.5
Wide Band Response
(0.2 - 10.0 kHz)
dB
-2.5
-4.5
dBm
- 45.0 to + 3.0
- 43.0 to + 3.0
dB
-80.0
- 70.0
Distortion (0 dB/at 1.0 kHz)
%
≤ 0.1
≤ 0.25
Leakage Induction (typical)
mH
14.0
14.0
kVDC
6.5
6.5
°C
-10 to +60
-10 to +60
°C
-20 to +70
Power Level
Longitudinal Balance
(0.3 - 4.0 kHz)
Dielectric Strength (P/S)
Temperature
Range
Operation
Storage
Specifications Met
BS 6204: Construction and flammability (UL 94V0)
BS 6301: Isolation
BS 6305: Return loss (1982/paragraph 4.3.2.2/b)
-20 to +70
CCITT: Rec. T/CD 1-1 (Sept. 1982)
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 05/11
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.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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