The TFS Series has been spe-
cifically developed to absorb
large amounts of energy by
efficient use of its compact
mass. Ideal for medical surge
protection applications, these
thick film reisistors offer non-
inductive performance in an
axial package.
Uses include power supply
conversion, electron micro-
scopes, X-ray systems, high-
resolution CRT displays, and
geophysical instrument related
products.
SPECIFICATIONS
Material
Resistive Element:
Thick Film
Encapsulation:
Screen Printed
Glass
Electrical
Resistance Value:
100Ω up to
100KΩ
Temperature Coefficient:
100ppm/°C
Tolerance:
1%, 2%, 5%, 10%
Operating Temperature:
-55°C to
+200°C
Test:
VDE 0750 (Pulse Duration
10 msec)
Surge Capable
Thick Film Non Inductive
C
A
B
TFS Series
0.50mm
H
E
FEATURES
• Appropriate for medical surge
protection applications
• Ideal to replace standard carbon
composition resistors
• Custom dimensions, values,
tolerances and characteristics
available
• For energy rating information,
visit www.ohmite.com
Type
TFSA
TFSB
TFSC
TFSD
TFSE
TFSF
0.25mm
U
(KV)
3
3.5
4
7
7
11
Energy*
(J)
6
9
11
33
44
55
Power
(W)
0.5
0.5
0.75
1
1.5
2
Dimensions (mm)
B
C
H
5.5
10
0.7
5.5
10
0.7
5.5
10
0.7
8
10
0.9
10.5
10
0.9
10.5
10
0.9
A
9
11
13
21
21
26
E
1.1
1.1
1.1
1.3
1.3
1.3
MAXIMUM INDIVIDUAL PULSE RATING
1000
Energy Rating %
*Published energy rating is for 10ms pulse. For shorter pulses energy rating has to be
derated according to Max. Individual Pulse Rating chart (left) and Single Pulse Energy
Rating considerations (see ohmite.com).
O R D E R I N G I N F O R M AT I O N
100
10
1
0.1
1
µs
RoHS Compliant
TFSA100KJE
Series Energy Rating
joules
A = 6
D = 33
B = 9
E = 44
C = 11
F = 55
Ohm Value
Example:
100R = 100Ω
2K40 = 2400Ω
Tolerance
F = 1%
G = 2%
J = 5%
K = 10%
10
µs
100
µs
1 ms
Pulse Width
10 ms
100 ms
S TA N D A R D PA RT N U M B E R S F O R T F S S E R I E S
Ohms Tol.
100
100
220
270
470
470
680
750
1,000
1,000
1,500
2,200
2,700
4,700
4,700
4,990
5,000
6,800
10,000
10,000
16,000
20,000
20,000
22,000
27,000
47,000
50,000
51,000
75,000
1%
5%
1%
5%
1%
6 Joules
0.5 Watts
TFSA100RFE
TFSA220RFE
TFSA270RJE
TFSA470RFE
9 Joules
0.5 Watts
TFSB100RJE
11 Joules
0.75 Watts
33 Joules
1 Watts
TFSD100RJE
TFSC270RJE TFSD270RJE
44 Joules
1.5 Watts
55 Joules
2 Watts
TFSF100RJE
TFSF270RJE
NOTES
• Momentary overload capability is 5 times rated power for
1 second or 2 times rated power for 5 seconds. Always
verify designs with pulse and surge conditions through
thorough testing of the design at maximum operating
temperature and maximum pulse loading (or some mar-
gin above maximum pulse loading).
• Damage to the resistor by excessive pulse loading is
generally indicated by an increasing resistance of the
resistor.
• Energy ratings are based on single pulses (at least 1
minute between pulses).
• For multiple pulse applications the energy pulse rating
should be reduced and the average power should not
exceed the nominal power rating of the selected model.
5%
TFSB470RJE
TFSE470RJE
5% TFSA680RJE
TFSC680RJE
TFSE680RJE TFSF680RJE
5%
TFSB750RJE
TFSD750RJE
TFSF750RJE
1% TFSA1K00FE
5% TFSA1K00JE TFSB1K00JE TFSC1K00JE TFSD1K00JE TFSE1K00JE TFSF1K00JE
5%
1%
5%
1%
5%
1%
5%
5%
1%
5%
TFSA1K50JE
TFSA2K20FE
TFSA4K70FE
TFSA4K70JE
TFSA4K99FE
TFSA75K0JE
TFSC1K50JE TFSD1K50JE
TFSB2K70JE
TFSC4K70JE TFSD4K70JE
TFSE2K70JE
TFSF1K50JE
TFSB6K80JE
TFSE6K80JE
TFSA10K0FE
TFSA10K0JE TFSB10K0JE TFSC10K0JE TFSD10K0JE
TFSF10K0JE
Our friendly Customer
Service team can be
reached at 866-9-OHMITE
5%
TFSF16K0JE
1% TFSA20K0FE
TFSF20K0JE
5%
TFSB20K0JE
TFSD20K0JE
1% TFSA22K0FE
5% TFSA27K0JE
TFSC27K0JE
TFSE27K0JE
1% TFSA47K0FE
5% TFSA50K0JE
TFSF51K0JE
5%
TFSB51K0JE TFSC51K0JE TFSD51K0JE
5%
TFSE75K0JE
TFSF100KJE
100,000 1% TFSA100KFE
100,000 5%
TFSB100KJE TFSC100KJE TFSD100KJE
Check product availability at
www.ohmite.com
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
67
OHMITE [ OHMITE MFG. CO. ]
