AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
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Z – LEAD SURFACE MOUNT SPECIFICATION
AC AXIAL CEMENTED WIREWOUND RESISTOR
& PR POWER METAL FILM RESISTORS
FEATURES
• Surface mounted version
• Low cost alternative for SMD molded resistor
• High power dissipation in small volume
• High pulse load handling capabilities
• High temperature silicone coating
TECHNOLOGY
Wire wound resistor AC03 / AC05
The resistor element is a resistive wire, which is wound, in a single layer on a ceramic rod. Metal caps are
pressed over the ends of the rod. The ends of the resistance wire and tinned copper-clad leads are
connected to the caps by welding. The resistor is coated with green silicon cement which is non-flammable,
will not drip even at high overloads and is resistant to most commonly used cleaning solvents, in accordance
with “MIL-STD-202E, method 215” and “IEC 60068-2-45”.
Metal film power resistor PR03
A homogenous film of metal alloy is deposited on a high-grade ceramic core. The leads are welded on this
caps and a helical groove has been cut in the resistive layer. The resistor is coated with red silicon cement
which is non-flammable, will not drip even at high overloads and is resistant to most commonly used
cleaning solvents, providing electrical, mechanical and climatic protection.
AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
Revision July 28 2005
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QUICK REFERENCE DATA
DESCRIPTION PR03 AC03 AC05
Resistance range ( 1 ) 0.33 Ω - 1 MΩ 1 Ω - 1 MΩ 0.1 Ω - 5.1 kΩ 0.1 Ω - 8.2 kΩ
Tolerance and series ±5%, E24 ±1%, E24/E96 ±5% and ±1%, E24/E96
Maximum dissipation at
Tamb = 25°C 3 W 3 W 5 W
Limiting voltage (DC or RMS) 750 V - -
Rated voltage ( 2 ) Pn x R
Temperature coefficient ( 3 ) ±250 ppm/°C R < 10 Ω: 0 to 600 ppm/°C
R 10 Ω: - 80 to + 140 ppm/°C (2)
Basic specification IEC 60115-1 and 60115-4 IEC60 115-1
Climatic category (IEC 60068) 55/155/56 40/200/56
Stability ∆R/Rmax after:
Load ±5% + 0.1 Ω ±1% + 0.1 Ω ±5% + 0.1 Ω
±5% + 0.1 Ω
Climatic tests ±3% + 0.1 Ω ±1% + 0.1 Ω ±1% + 0.05 Ω
±1% + 0.05 Ω
Resistance to soldering heat ±1% + 0.05 Ω ±0.5% + 0.05 Ω
±0.5% + 0.05 Ω
±0.5% + 0.05 Ω
(1) Special resistive values available on request
(2) Maximum rated voltage is the limiting voltage
(3) Temperature coefficient 30, 50 and 90 ppm/°C available on request
AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
Revision July 28 2005
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MECHANICAL DATA
Standard pad sizes
Table 1.
TYPE L max ∅
∅∅
∅D max ∅
∅∅
∅d P ±
±±
± 1 (1)
(±
±±
± 0.039)
h max
(1) (2)
W max
(1)
A min
(1)
B max
(1) C min E min
PR03 16.5
(0.650) 5.2
(0.205) 0.8 FeCu
(0.031) 21.0
(0.827) 5.0
(0.197) 7.5
(0.295) 24.5
(0.965) 17.5
(0.689) 3.5
(0.138) 8.0
(0.315)
AC03 12.5
(0.492) 5.5
(0.22) 0.8 FeCu
(0.031) 16.5
(0.649) 5.0
(0.197) 7.5
(0.295) 20.0
(0.787) 13.0
(0.512) 3.5
(0.138) 8.0
(0.315)
AC05 17.0
(0.669) 7.5
(0.295) 0.8 FeCu
(0.031) 21.0
(0.827) 5.0
(0.197) 7.5
(0.295) 24.5
(0.965) 17.5
(0.689) 3.5
(0.138) 8.0
(0.315)
Dimensions in mm (inches)
(1) Other dimensions available under request
(2) Dimensions to be confirmed
AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
Revision July 28 2005
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ELECTRICAL CHARACTERISTICS
DERATING: AC03 AND AC05
0 25 50 75 100 125 150 175 200
0
20
40
60
80
100
120
Maximum dissipation (P
max
) in percentage of rated power as a function of ambient temperature (T
amb
)
P
max
(%)
T
amb
(°C)
DERATING: PR03
0 25 50 75 100 125 150 175
0
20
40
60
80
100
120
P
max
(%)
T
amb
(°C)
Maximum dissipation (P
max
) in percentage of rated power as a function of ambient temperature (T
amb
)
AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
Revision July 28 2005
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MARKING
WIRE WOUND RESISTOR
The resistor is marked with the nominal resistance value, the tolerance on the resistance and the rated
dissipation at T
amb
= 25 ºC.
For values up to 910 Ω, the R is used as the decimal point.
For values of 1 KΩ and upwards, the letter K is used as the decimal point for the KΩ indication.
Example:
FILM RESISTOR
The nominal resistance and tolerance are marked on the resistor using four or five colored bands in
accordance with IEC publication 60062 “color code for fixed resistors”.
Standard values of nominal resistance are taken from the E24/E96 series for resistors with a tolerance of
±5% or 1%. The values of the E24/E96 series are in accordance with “IEC publication 60063”.
ORDERING INFORMATION
Table 2. Ordering code.
TYPE LEAD ∅
∅∅
∅ TOLERANCE QUANTITY
(pcs) PACKAGING ORDERING
CODE
±
1% Under request
PR03
±
5%
200
2306 199 55xxx
±
1% Under request
AC03
±
5%
200
2306 326 55xxx
±
1% Under request
AC05
0.80 FeCu
(0.031)
±
5%
200
IN BOX
2306 321 55xxx
Dimensions unless specified in mm (inches)
The resistors have a 12 digit ordering code starting with 2306.
The subsequent 6 or 7 digits indicate the resistor type and packaging see table 2.
For 5% tolerance the remaining 3 digits indicate the resistance value;
- The first 2 digits indicate the resistance value.
- The last digit indicates the resistance decade in accordance with table 3.
For 1% tolerance the remaining 4 digits indicate the resistance value;
- The first 3 digits indicate the resistance value.
- The last digit indicates the resistance decade in accordance with table 3.
6K8 5%
5
W
AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
Revision July 28 2005
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Table 3. Last digit of ordering code.
RESISTANCE DECADE (5%) RESISTANCE DECADE (1%) LAST DIGIT
0.1 - 0.91
Ω
- 7
1 - 9.1
Ω
1 - 9.76
Ω
8
10 - 91
Ω
10 - 97.6
Ω
9
100 - 910
Ω
100 - 976
Ω
1
1 - 9.1 k
Ω
1 - 9.76 k
Ω
2
10 - 91 k
Ω
10 - 97.6 k
Ω
3
100 - 910 k
Ω
100 - 976 k
Ω
4
1 M
Ω
1 M
Ω
5
Example:
PR03, 15000 Ω, ±5% is 2306 199 55153
PACKAGING
200 pieces per box
TESTS AND REQUIREMENTS
WIRE WOUND RESISTOR (AC03 AND AC05)
Essentially all tests are carried out in accordance to the schedule of IEC publications 60115 – 1, category
40/200/56 (rated temperature range – 40 to + 200 °C; damp heat, long term, 56 days and along the lines of
IEC publications 60068-2); “Recommended basic climatic and mechanical robustness testing procedure for
electronic components” and under standard atmosphere conditions according to IEC 60068-1 subclause 5.3,
unless otherwise specified.
In some instances deviations from IEC applications were necessary for our method specified.
Table 5. Test and requirements.
IEC 60115-1
CLAUSE
IEC 60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
4.8
- Temperature coefficient
Between
- 40 °C and + 200 °C:
R < 10
Ω
R
≥
10
Ω
0 to 600 ppm/°C
- 80 to +140 ppm / °C
AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
Revision July 28 2005
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IEC 60115-1
CLAUSE
IEC 60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
4.13 - Short time overload Room temperature;
dissipation 10 x Pn; 5 s
(voltage not more than
1000 V / 25 mm)
∆
R/R
max
±
2% + 0.1
Ω
4.16 21(U) Robustness of
terminations:
4.16.2 21(Ua) Tensile all samples Load 10 N; 10 s
4.16.3 21(Ub) Bending half number of
samples Load 5 N; 4 x 90°
4.16.4 21(Uc) Torsion other half
number of samples 2 x 180° in opposite
directions
No visual damage
∆
R/R
max
±0.5% + 0.05
Ω
4.17 20(Ta) Solderability
(after ageing) 16 h at 155 °C; leads immersed
in flux 600, leads immersed
2 mm for 2 ±0.5 s in a solder
bath at 235 ±5 °C
Good tinning;
(
≥
95% covered)
no visible damage
4.18 20(Tb) Resistance to
soldering heat Thermal shock: 3 s;
350
±
10 °C; 2.5 mm
from body
∆
R/R
max
±0.5% + 0.05
Ω
4.19 14(Na) Rapid change of
temperature 30 minutes at - 40 °C and 30
minutes at + 200 °C; 5 cycles No visible damage
∆
R/R
max
±1% + 0.05
Ω
4.22 6(Fc) Vibration Frequency 10 to 500 Hz
0.75 mm or acceleration 10 g,
three directions;
total 6 h (3 x 2 h)
No visible damage
∆
R/R
max
±0.5% + 0.05
Ω
4.23 Climatic sequence
4.23.2 2(Ba) Dry heat 16 h; + 200 °C
4.23.3 30(Db) Damp heat
(accelerated)
1
st
cycle
24 h; 25 ºC to
55 °C; 90 to 100% R.H.
4.23.4 1(Aa) Cold 2 h; - 40 °C
4.23.6 30(Db) Damp heat
(accelerated)
remaining cycles
5 days; 25 °C to 55 °C;
90 to 100% R.H.
∆
R/R
max
±1% + 0.05
Ω
4.24 3(Ca) Damp heat
(steady state) 56 days; 40 °C; 90 to 95%
R.H.; loaded with 0.01Pn No visible damage
∆
R/R
max
±1% + 0.05
Ω
4.25.1 - Endurance
(at 25 °C) 1000 h load with 0.9 Pn; 1.5 h
ON and 0.5 h OFF. No visible damage
∆
R/R
max
±5% + 0.1
Ω
AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
Revision July 28 2005
All rights are reserved. Reproduction whole or in part is
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IEC 60115-1
CLAUSE
IEC 60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
4.29 45 (Xa) Component solvent
resistance Isopropyl alcohol followed by
brushing in accordance with
MIL STD 202 No visible damage
FILM RESISTOR (PR03)
Essentially all tests are carried out in accordance to the schedule of IEC publications 60115 – 1, category
55/155/56 (rated temperature range - 55 °C to + 155 °C; damp heat, long term, 56 days and along the lines
of IEC publications 60068-2); “Recommended basic climatic and mechanical robustness testing procedure
for electronic components” and under standard atmosphere conditions according to IEC 60068-1 subclause
5.3, unless otherwise specified.
In some instances deviations from IEC applications were necessary for our method specified.
Table 7. Test and requirements.
REQUIREMENTS
IEC 60115-1
CLAUSE
IEC 60068-2
TEST
METHOD
TEST PROCEDURE
PR03 Tol 5% PR03 Tol 1%
4.6.1.1 - Insulation resistance
500 V (DC) during 1 minute,
V-block method R
ins min
10
4
M
Ω
4.7 - Voltage proof on
insulation 500 V (RMS) during 1
minute, V-block method. No breakdown
or flashover
REQUIREMENTS
IEC 60115-1
CLAUSE
IEC 60068-2
TEST
METHOD
TEST PROCEDURE
PR03 Tol 5% PR03 Tol 1%
4.8 - Temperature
coefficient Between
- 55 °C and + 155 °C
±
250 ppm/°C
4.16 21(U) Robustness of
terminations:
4.16.2 21(Ua1) Tensile all samples Load 10 N; 10 s
4.16.3 21(Ub) Bending half number
of samples Load 5 N; 4 x 90°
4.16.4 21(Uc) Torsion other half
of samples 3 x 360° in opposite
directions
No damage
∆
R/R
max
±
0.5% + 0.05
Ω
AC PR Z LEAD Preliminary Specification
PHOENIX DO BRASIL LTDA
Revision July 28 2005
All rights are reserved. Reproduction whole or in part is
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REQUIREMENTS
IEC 60115-1
CLAUSE
IEC 60068-2
TEST
METHOD
TEST PROCEDURE
PR03 Tol 5% PR03 Tol 1%
4.17 20(Ta) Solderability
(after ageing)
16 h at 155 °C; immersed in
flux 600, leads immersed
2 mm for 2 ±0.5 s in a solder
bath at 235 ±5 °C
Good tinning
(
≥
95% covered)
No damage
4.18 20(Tb) Resistance to
soldering heat Thermal shock: 3 s; 350 °C;
6 mm from body
∆
R/R
max
±
1% + 0.05
Ω
∆
R/R
max
±
0.5% + 0.05
Ω
No visual damage 4.19 14(Na) Rapid change of
temperature 30 minutes at - 55 °C and
30 minutes at + 155 °C;
5 cycles
∆
R/R
max
±
2%+0.05
Ω
∆
R/R
max
±
1%+0.05
Ω
REQUIREMENTS
IEC 60115-1
CLAUSE
IEC 60068-2
TEST
METHOD
TEST PROCEDURE
PR03 Tol 5% PR03 Tol 1%
4.22 6(Fc) Vibration Frequency 10 to 500 Hz,
displacement 1.5 mm or
acceleration 10g; three
directions; total 6 h (3 x 2 h)
No damage
∆
R/R
max
±
0.5% +0.05
Ω
4.23 Climatic sequence:
4.23.2 2(Ba) Dry heat 16 h; 155 °C
4.23.3 30(Db) Damp heat
(accelerated)
1
st
cycle
24 h; 25 °C to 55 °C;
90 to 100% RH
4.23.4 1(Aa) Cold 2 h; - 55 °C
R
ins min
10
3
M
Ω
4.23.6 30(Db) Damp heat
(accelerated)
remaining cycles
5 days; 25 °C to 55 °C;
90 to 100% R.H.
∆
R/R
max
±
3% + 0.05
Ω
∆
R/R
max
±
1% + 0.05
Ω
R
ins min
10
3
M
Ω
4.24 3(Ca) Damp heat
(steady state)
56 days; 40 °C; 90 to 95%
R.H.; loaded with 0.01 Pn
∆
R/R
max
±
3% + 0.05
Ω
∆
R/R
max
±
1% + 0.05
Ω
4.25.1 - Endurance
(at 25 °C) 1000 h loaded with Pn
or V
max
, 1.5 h ON and
0.5 h OFF.
∆
R/R
max
±
5% + 0.05
Ω
∆
R/R
max
±
1% + 0.05
Ω
4.29 45(Xa) Component solvent
resistance
Isopropyl alcohol followed by
brushing
MI
L
STD 202
No visual damage
