www.vishay.com
8
GSR
Vishay Angstrohm
Document Number 66004
Revision 25-Aug-00
Precision Hermetic Metal Film Resistors
Commercial
FEATURES
•Excellent long term stability
•Hermetic glass enclosure is impervious to harmful
environments
•Inert gas filled
•Low noise
•Low TCR
GENERAL SPECIFICATIONS
Resistance Range: 10.0 Ω to 10.0M (see Table 1).
Tolerance: ± 0.05%, ± 0.1%, ± 0.5%, and ± 1.0%.
Temperature Characteristics:
± 15ppm/°C to ± 50 ppm/°C.
Power Ratings:
1/10, 1/8, 1/4, 1/2 and 1 watt - 125°C.
1/8, 1/4, 1/2, 3/4, and 2 watt - 70°C.
TABLE 1 - STANDARD ELECTRICAL SPECIFICATION
MAXIMUM RESISTANCE RANGE
POWER RATING WORKING (Ohms)
MODEL 125°C70°C VOLTAGE Min. Max.
GSR55 1/10 1/8 200 10.0 2.5M
GSR57 1/8 1/4 250 10.0 1.0M
GSR60 1/8 1/4 250 10.0 3.0M
GSR65 1/4 1/2 300 10.0 10.0M
GSR70 1/2 3/4 350 10.0 10.0M
GSR75 1 2 750 10.0 5.0M
Power Derating: For ambient temperatures above 125°C,
see Power Derating Curve.
MECHANICAL SPECIFICATIONS
Termination: Vishay Angstrohm GSR Resistors use gold-
plated nickel leads, which are both solderable and weldable
(hot solder dip is available as an option).
B
EC
AD
DIMENSIONS in inches [millimeters]
CD E D
A B CL TO CL LENGTH DIAMETER APPROX.
MODEL LENGTH DIAMETER (MAX.) ± 0.125 [ ±3.18] ± 0.002 [± 0.051] WEIGHT (grams)
GSR55 0.280 ± 0.020 0.110 ± 0.020 0.379 1.50 0.025
[7.11 ± 0.51] [2.79 ± 0.51] [9.63] [38.10] [0.635]
GSR57 0.310 ± 0.025 0.150 ± 0.020 0.467 1.50 0.025
[7.87 ± 0.64] [3.81 ± 0.51] [11.86] [38.10] [0.635]
GSR60 0.425 ± 0.030 0.150 ± 0.020 0.530 1.50 0.025
[10.80 ± 0.76] [3.81 ± 0.51] [14.25] [38.10] [0.635]
GSR65 0.640 ± 0.040 0.240 ± 0.025 0.780 1.50 0.025
[16.26 ± 1.02] [6.10 ± 0.64] [19.81] [38.10] [0.635]
GSR70 0.640 ± 0.040 0.240 ± 0.025 0.780 1.50 0.032
[16.26 ± 1.02] [6.10 ± 0.64] [19.81] [38.10] [0.813]
GSR75 1.062 ± 0.062 0.250 ± 0.025 1.186 1.50 0.032
[26.98 ± 1.58] [6.35 ± 0.64] [30.12] [38.10] [0.813]
0.337
0.405
0.450
1.300
1.440
2.500
www.vishay.com
9
GSR
Vishay Angstrohm
Document Number 66004
Revision 25-Aug-00
POWER DERATING MARKING
— Style and Size
— Value
— Tolerance and RTC
— Date Code
120
100
80
60
40
20
0
RATED POWER IN %
AMBIENT TEMPERATURE °C
25 50 75 100 125 150 175
125°C
ORDERING INFORMATION
GSR
STYLE
GSR
Example: GSR55E49R9B
49R9
RESISTANCE
VALUE
The nominal resistance value expressed in
ohms is a four digit number. The first three
digits represent significant figures and the
last digit specifies the number of zeros to
follow.
When the value is less than 100 ohms, the
letter “R” is substituted for one of the
significant figures to represent the decimal
point. The resistance values shall follow
the Standard Resistance-Tolerance
Decade Table (page 11).
Examples:
1.00 Ω = 1R00 10,000 Ω = 1002
10.0 Ω = 10R0 100,000 Ω = 1003
100 Ω = 1000 1,000,000 Ω = 1004
1000 Ω = 1001
E
RESISTANCE /
TEMPERATURE
CHARACTERISTICS
(RTC)
Code = X
=E
=C
RTC = ± 15 PPM/°C
=± 25 PPM/°C
=± 50 PPM/°C
B
TOLERANCE
55
SIZE
55
57
60
65
70
Initial resistance
is identified by a
single letter.
B = ± 0.1%
D = ± 0.5%
F = ± 1.0%
Legal Disclaimer Notice
Vishay
Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
