48 Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 49
A S E R I E S S T O C K V A L U E S
Ohmic value
AW–––
AX–––
AY–––
AZ–––
Series
Part No.
Prefix
Suffix
Ohmic value
AW–––
AX–––
AY–––
AZ–––
Series
Part No.
Prefix
Suffix
Ohmic value
AW–––
AX–––
AY–––
AZ–––
Series
Part No.
Prefix
Suffix
Ohmic value
AW–––
AX–––
AY–––
AZ–––
Series
Part No.
Prefix
Suffix
A Series
PulsEaters
®
Ceramic
Composition Resistors
Available in E12 Ohmic values
Lead Gauge:
AW = 20AWG
AX = 18AWG
AY = 18AWG
AZ = 18AWG
L D H S Impulse Energy
4
Resistance
1
P max. max. max. norm. Voltage
3
(Joule)
Series (Ohms) avg.
2
(mm) (mm) (mm) (mm) (Volts)
AW xxx 4.7 to 15K 2.5 20 13 22 17.5 1500 400
AX xxx 1.0 to 3.3K 3.5 15 21 31 12.5 1000 700
AY xxx 2.2 to 6.8K 4.5 25 21 31 22.5 2000 1400
AZ xxx 1.5 to 4.7K 5.5 30 26 36 27 2500 2800
1
E12 Standard Values ±10%;
2
Free Air 40°C Ambient;
3
In Air;
4
Single Impulse
1.0 –––10GK
1.2 –––12GK
1.5 –––15GK
1.8 –––18GK
2.2 –––22GK
2.7 –––27GK
3.3 –––33GK
3.9 –––39GK
4.7 –––47GK
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
= Stock values Non-standard values subject to a minimum handling charge per item.
O R D E R I N G I N F O R M A T I O N
L
S
D
H
7.6mm
Style A
single lead
(AW, AX, AY)
Style B
dual lead (AZ)
standoff lead
offset 2x dia.
4.7mm
offset
crimp
16.7mm
S T A N D A R D S P E C I F I C A T I O N S
Parameter Max. ΔR Test Method
Life Test +5% MIL-STD-202F, method 108A. except 50°C, 1000 hrs. @
rated power; 1.5 hrs. ON, 0.5 hrs. OFF
Single Pulse Energy ±1.5% Single pulse, capacitor discharge at Rated Energy;
350VDC for AW and AX sizes; 650VDC for AY and AZ sizes.
Repetitive HV Pulsing ±2.0% 10 joules @ 5.OKV, 10,000 cycles
Short-time Overload ±1.5% 10x rated power. 5 seconds ON, 5 seconds OFF, 5 cycles
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
Moisture Resistance ±1.0% 90% to 95% rh @ 40°C, 1000 hrs.
Ohm Value
Example:
33G = 3.3 Ohms
330 = 33 Ohms
331 = 330 Ohms
Tolerance
K=
10% Standard
J =
5% Special order
Size
AW
= 2.5W
AX = 3.5W
AY
= 4.5W
AZ = 5.5W
E = RoHS compliant
Available Jan. 2006
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.
F E A T U R E S
• High Surge Energy
• Non-Inductive
• Small Size
A P P L I C A T I O N S
• Motor Drives
• Power Supplies, UPS
• Power Conversion
• In-Rush Current Limiting
S P E C I F I C A T I O N S
Material
Resistance Element: Bulk
Ceramic
Terminals: Solder coated radial
leads (axial lead version avail-
able upon request)
Coating: UL94V0, solvent resis-
tant epoxy
Electrical
Tolerance: ±10% Standard;
±5% Special Order
Derating: Derates linearly from
100% @ 50°C to 0% @ 150°C
Temperature Rise: 100°C @
100% rated power, 50°C ambient
AZ style is provided with dual leads
M O U N T I N G C L I P
This saddle clip conforms to
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.
Dim. (mm)
Part No. D H L for Series
5911E 20 23 13 AX and AY
5910E 25 26 15 AZ
