The “A” Series of non-induc-
tive, ceramic composite resis-
tors are designed for a variety
of applications where high
energy handling capabilities
are crucial. These resistors are
ideal for any application which
is subject to surges, high peak
power or impulse energy.
Their unique design allows
uniform distribution of energy
throughout their structure
which results in low thermal
stress. The high-temperature,
solvent-resistant epoxy coating
carries a UL94V0 flammabil-
ity rating which is suitable for
almost any environment.
A P P L I C A T I O N S
• Motor Drives
• Power Supplies, UPS
• Power Conversion
• In-Rush Current Limiting
A Series
PulsEaters® Ceramic Composition
Available in E12 Ohmic values
S P E C I F I C A T I O N S
Material
Resistance Element: Bulk
Ceramic
Terminals: 100% Sn solder coat-
ed radial (60/40 solder available
upon request)
Style A
single lead
Style B
dual lead (AZ)
L
(AW, AX, AY)
D
Coating: UL94V0, solvent resis-
tant epoxy
H
offset
crimp
standoff lead
offset 2x dia.
16.7mm
Electrical
Tolerance: ±10% Standard;
±5% Special Order
4.7mm
S
7.6mm
F E A T U R E S
Derating: Derates linearly from
100% @ 50°C to 0% @ 150°C
Temperature Rise: 100°C @
100% rated power, 50°C ambient
• High Surge Energy
• Non-Inductive
• Small Size
Lead Gauge:
AW = 20AWG
AX = 18AWG
AY = 18AWG
AZ = 18AWG
AZ style is provided with dual terminals
O R D E R I N G I N F O R M AT I O N
L
D
H
S
Impulse Energy4
Resistance1
P
max. max. max. norm. Voltage3 (Joule)
E = RoHS compliant
Available Jan. 2006
Series
(Ohms) avg.2 (mm) (mm) (mm) (mm)
(Volts)
AW xxx 4.7 to 15K 2.5
AX xxx 1.0 to 3.3K 3.5
20
15
13
21
19 17.5
26 12.5
1500
400
700
� ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ
1000
Size
Ohm Value
Tolerance
K= 10% Standard
AW= 2.5W Example:
AY xxx 2.2 to 6.8K 4.5
AZ xxx 1.5 to 4.7K 5.5
25
30
21
26
26 22.5
35
2000
2500
1400
2800
AX = 3.5W 33G = 3.3 Ohms J = 5% Special order
AY = 4.5W 330 = 33 Ohms
AZ = 5.5W 331 = 330 Ohms
27
1E12 Standard Values ±10%; 2Free Air 40°C Ambient; 3In Air; 4Single Impulse
M O U N T I N G C L I P
S TA N D A R D S P E C I F I C AT I O N S
Parameter
Life Test
Max. ΔR Test Method
This saddle clip conforms to
D
+5%
MIL-STD-202F, method 108A. except 50°C, 1000 hrs. @
rated power; 1.5 hrs. ON, 0.5 hrs. OFF
the configuration of Ohmite’s
A Series resistor to provide
secure mounting in the end
application. Made of a durable
thermoplastic polyester, the
saddle clip is designed to
secure the A Series in place
while safely withstanding its
operating temperatures. Use
(2) saddle clips per resistor for
extra stability.
Single Pulse Energy
±1.5% Single pulse, capacitor discharge at Rated Energy;
350VDC for AW and AX sizes; 650VDC for AY and AZ sizes.
H
Repetitive HV Pulsing ±2.0% 10 joules @ 5.OKV, 10,000 cycles
Short-time Overload
Short-term High Temp ±1.5% 250°C for 30 seconds
Long-term High Temp ±2.0% 1000 hours @ 150°C
Thermal Shock Cycle ±2.0% MIL-STD-202F, method 107D. -55°C to +125°C, 5 cycles
±1.5% 10x rated power. 5 seconds ON, 5 seconds OFF, 5 cycles
L
Dim. (mm)
D
20 23 13
25 26 15
Part No.
5911E
5910E
H
L
for Series
AX and AY
AZ
Moisture Resistance
±1.0% 90% to 95% rh @ 40°C, 1000 hrs.
S TA N D A R D V A L U E S F O R A S E R I E S
Series
Series
Series
Series
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
1.0–––10GK
5.6–––56GK
6.8–––68GK
8.2–––82GK
10 –––100K
12 –––120K
15 –––150K
18 –––180K
22 –––220K
27 –––270K
33 –––330K
39 –––390K
47 –––470K
56 –––560K
68 –––680K
82 –––820K
100 –––101K
120 –––121K
150 –––151K
180 –––181K
220 –––221K
270 –––271K
330 –––331K
390 –––391K
470 –––471K
560 –––561K
680 –––681K
820 –––821K
1000 –––102K
1.2–––12GK
1.5–––15GK
1.8–––18GK
2.2–––22GK
2.7–––27GK
3.3–––33GK
3.9–––39GK
4.7–––47GK
Check product availability at www.ohmite.com
= Stock values Non-standard values subject to a minimum handling charge per item.
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
53
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