IA
NT
Features
■
High power density
■
Can withstand ITU-T K.20, K.21 and K.45
Applications
■
Telecom ports designed for Metallic Ended
M
PL
basic test requirements
■
RoHS compliant*
Line Test (MELT) functionality
■
ADSL and VDSL2 telecom ports
■
Telecom line test equipment
*R
oH
S
CO
CRM2512-FT Series Power Resistor
Electrical Characteristics
Characteristic
Power
Resistance
Working Voltage
Short Time Overload Voltage
Operating Temperature Range
TCR
Surge Characteristics
(Per ITU-T K.20, K.21 and K.45
Test Requirements)
Wave Shape
Overvoltage
CRM2512-FT
2W
10K to 1M Ohms (E24)
300 V
600 V
-55 °C to +155 °C
±100 PPM/°C
General Information
The Model CRM2512-FT is a power
resistor rated to 2 watts continuous
power in a small 2512 size package.
It can withstand ITU-T K.20, K.21 and
K.45 basic test requirements and is
aimed at telecom applications.
Characteristic Data
Test
Load Life (1000 hours)
Short Term Overload
10/700 1.5 KV ±5 pulses
600 Vrms, 600 ohms, 0.2 seconds
Thermal Shock
600 Vrms, 600 Ohms,
0.2 Seconds, 5 Applications
(R>20K)
600 Vrms, 600 Ohms,
0.1 Seconds, 5 Applications
(R<20K)
DIMENSIONS:
A
ΔR
Max.
<1%
<1%
< 0.5 %
<1%
Recommended Solder Pad Layout
L
B
<1%
<1%
MM
(INCHES)
10/700 1.5 kV,
±5 Applications
Product Dimensions
Cu TRACE
6.3 ± 0.20
(0.248 ± 0.008)
Model
CRM2512-FT
A
3.7
(0.146)
B
2.45
(0.096)
L
2.7
(0.106)
0.6 ± 0.20
(0.024 ± 0.008)
3.1 ± 0.20
(0.122 ± 0.008)
Soldering Profile
0.6 ± 0.20
(0.024 ± 0.008)
250
Peak 260 +5/-0 °C
230 °C or higher
Pre-heating Zone
1.8 ± 0.20
(0.070 ± 0.008)
Temperature (°C)
200
180 °C
150
100
150 °C
Derating Curve
Power Ratio (%)
90 ± 30 seconds
30 ± 10 seconds
Soldering Zone
50
Heating Time
100
-55
70
155
Ambient Temperature (°C)
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications
CRM2512-FT Series Power Resistor
How to Order
PEAK POWER (W)
Pulse Load Characteristics
CRM 2512 - F T - 1202 E LF
Model
(CRM = High Power Resistor)
Size
2512 = 2512 Size
Resistance Tolerance
• F = ±1 %
Function
• T = Special Resistor Layout for Telecom Applications
Resistance Value
First three digits are significant, fourth digit represents number of zeros to follow
Packaging
• E = 4000 pieces on 180 mm (7 inch) reel
Terminations
• LF = Tin-plated (RoHS Compliant)
1000
100
10
1
0.0001
0.001
0.01
1.0
SURGE DURATION (S)
Packaging Dimensions (Conforms to EIA RS-481A)
PAPER TAPE
TOP TAPE
1.5 +0.1/-0
DIA.
(0.059 +0.004/-0)
1.5
(0.059)
DIA. MIN.
1.75 ± 0.1
(0.069 ± 0.004)
5.5 ± 0.05
(0.217 ± 0.002)
13.0 ± 1.0
(0.512 ± 0.039)
DIA.
180 +0/-3
(7.09 +0/-0.118)
DIA.
60.0
(2.362)
MIN.
DIA.
12.0 ± 0.2
(0.472 ± 0.008)
RESISTOR
3.60 ± 0.20
(0.142 ± 0.008)
0.85 ± 0.15
(0.033 ± 0.006)
4.0 ± 0.1
(0.157 ± 0.004)
2.0 ± 0.05
(0.079 ± 0.002)
4.0 ± 0.05
(0.157 ± 0.002)
6.9 ± 0.2
(0.272 ± 0.008)
USER DIRECTION OF FEED
15.4 ± 2.0
(0.606 ± 0.079)
13.0 ± 1.0
(0.512 ± 0.039)
DIMENSIONS:
MM
(INCHES)
REV. 05/22/09
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications
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