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Specification for Approval
Customer
:
深圳市立创电子商务有限公司
Part Name
:
MFR SERIES ±0.1% ±0.25 ±0.5% ±1%、±2%、±5%
Product Name :
LEAD-FREE METAL FILM FIXED RESISTORS
Part No.
MFR0*********0
:
88 Longteng Road, Economic & Technical Development Zone, Kunshan City, Jiangsu, CHINA 215334
TEL: 86 512 57631411 / 22 / 33
FAX: 86 512 57631431
E-mail: globalsales@uniohm.com localsales@uniohm.com
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Content
Index.......................................................................................................................................................................................Page
1.0 Scope.....................................................................................................................................................................................4
2.0 Ratings and dimension.................................................................................................................................................4
3.0 Structure.............................................................................................................................................................................5
4.0 Mark......................................................................................................................................................................................5
5.0 Derating curve..................................................................................................................................................................6
6.0 Voltage rating....................................................................................................................................................................6
7.0 Specification......................................................................................................................................................................7
8.0 Explanation of Part No. System................................................................................................................................8
9.0 Order procedure..............................................................................................................................................................9
10.0 Standard packing.........................................................................................................................................................10
11.0 Note...................................................................................................................................................................................13
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File Name:
Date
2016/5/9
Edition No.
1
Description
Page
Date
Amended by
Checked by
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MFR SERIES
Edition
Amendment Record
Signature
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1.0 Scope
This file is the specification for Lead-Free Metal Film Fixed Resistors manufactured by UNIOHM.
2.0 Ratings and dimensions
For 1/8W, 1/4WS, 0.4WSS
Type
2.1
Normal size
D
L
d±0.05
H±3
Max
Working
Voltage
6.5±1.0
0.54
28
250V
Dimension(mm)
MF 1/8W
1.9±0.3
3.3±0.3
MF 1/2W
3.0±0.6
9.5±1.0
MF 1/4W
2.2±0.3
MF 1W
MF 2W
MF 3W
Type
2.2
MF 1/4WS
MF 0.4WSS
MF 1/2WSS
MF 1/2WS
MF 0.6WS
MF 1WS
MF 2WS
MF 3WS
4.5±0.6
11.5±1.0
6.0±0.6
17.5±1.0
5.0±0.6
Other
0.45
0.54
0.65
15.5±1.0
0.70
0.75
Small Size & ultra Small Size
D
1.9±0.5
1.9±0.5
2.2±0.5
2.7±0.5
2.2±0.5
3.5±0.6
4.0±0.6
5.0±0.6
Approved
William Zhao
Dimension(mm)
L
3.3±0.3
d±0.05
3.3±0.3
6.5±0.5
9.0±1.0
6.5±1.0
9.5±1.0
11.5±1.0
15.5±1.0
Checked
0.45
0.45
0.54
0.54
0.54
0.60
0.65
0.70
Apple Liu
28
200V
28
350V
28
28
H±3
28
28
28
28
28
28
28
Prepared
Wu Yiyun
500V
500V
400V
700V
700V
1000V
500V
1000V
1000V
200V
200V
250V
350V
250V
350V
500V
500V
1000V
Max
Overload
Voltage
400V
1000V
Dielectric
Withstanding
Voltage
400V
500V
700V
500V
700V
1000V
1000V
File NO.
JLC-01-008
Resistance
Range
Tolerance
Resistance
Range
±1%、±2%
200V
±5%
±1%、±2%
200V
±5%
±1%
250V
±2%、±5%
±1%、±2%
700V
250V
Tolerance
±1%、±2%
±5%
±1%、±2%
±5%
±1%、±2%
±5%
±1%、±2%
±5%
±1%、±2%
±5%
±1%、±2%
±5%
400V
1000V
Max
Working
Voltage
28
Dielectric
Withstanding
Voltage
500V
500V
28
Max
Overload
Voltage
±5%
±1%
±2%、±5%
10Ω~1MΩ
1Ω~1MΩ
10Ω~1MΩ
1Ω~1MΩ
10Ω~1MΩ
1Ω~1MΩ
51.1Ω~1MΩ
1Ω~1MΩ
51.1Ω~1MΩ
1Ω~1MΩ
51.1Ω~1MΩ
1Ω~1MΩ
10Ω~1MΩ
1Ω~1MΩ
10Ω~1MΩ
1Ω~1MΩ
10Ω~1MΩ
1Ω~1MΩ
10Ω~1MΩ
1Ω~1MΩ
10Ω~1MΩ
1Ω~1MΩ
350V
±1%、±2%、±5%
10Ω~1MΩ
350V
±1%、±2%、±5%
10Ω~1MΩ
350V
±1%、±2%、±5%
Edition
Date
1
2016/5/9
10Ω~1MΩ
Page
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3.0 Structure
No.
Name
Material
1
Basic body
Rod type ceramics
4
Lead wire
Tin solder coated copper wire
2
3
5
Resistance layer
End cap
Joint
Metal Film
Cold steel plated with copper/tin
By Welding
1.
2.
6
Coating
7
Color bands
Inner paint: Celluloid resin
Outer paint:
2.1 Inflammable resin for normal size and 1/2W small size: Blue
2.2 Non-inflammable resin for other small size: Light Green
2.3 Non-inflammable resin for ultra-small size-0.4WSS: Deep Green
Epoxy resin
4.0 Mark
Resistors shall be marked with color bands which in accordance with JIS C 0802
For 1/8W, 1/4WS, 0.4WSS (±1%)
Another
For 1/8W,1/6W,1/4WS,0.4WSS (±2%, ±5%)
Another
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4.1
Label:Label includes following items:
4.1.1 Type and style
4.1.2 Nominal resistance
4.1.3 Resistance tolerance
4.1.4 Quantity
Example:
METAL FILM FIXED RESISTORS
WATT: 2W
VAL:200KΩ
Q’TY: 1,000
TOL: 1%
LOT: 3021548
PPM: 50
4.1.5 Lot. No.
4.1.6 TCR: PPM
5.0 Derating curve:
Resistors shall have a power rating based on continuous load operation at an ambient temperature
from -55℃ to 70℃. If temperature is above 70℃, the load shall be derate as shown in figure 1
Figure1
6.0 Voltage rating:
Resistors should have a power rating based on direct-current (DC) continuous voltage rating and an
alternating-current (AC) continuous voltage rating which calculating formula shown as below:
RCWV = √𝑃𝑃 ∗ 𝑅𝑅
RCWV: Rated DC or RMS AC continuous working voltage (Volt.)
P:
Power Rating (Watt.)
R:
Nominal Resistance (Ohm)
Resistors will be burned out if it overload, such as higher than the maximum value of series’ RCWV.
And we named 2.5 times RCWV is OVERLOAD Voltage.
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7.0 Specification
Limits
Item
±0.25%
±15 PPM/℃Max..
±0.5%
±50PPM/℃Max..
±0.1%
Temperature
Coefficient
Short-time
overload
Dielectric
withstanding
voltage
Pulse overload
Resistance to
soldering heat
Resistance to
solvent
Terminal strength
±25 PPM/℃Max..
±1%
±50PPM/℃Max..
±5%
±200PPM/℃Max..
±2%
±100PPM/℃Max.
Resistance change rate is:
±(0.5%+0.05Ω)Max. With no evidence of
mechanical damage.
No evidence of flashover mechanical
damage, arcing or insulation break down.
Resistance change rate is:
± (1%+0.05Ω) Max. With no evidence of
mechanical damage.
Resistance change rate is:
± (1%+0.05Ω) Max. With no evidence of
mechanical damage
No deterioration of protective coatings &
markings
No evidence of mechanical damage
Solderability
95% coverage Min.
Temperature
cycling
Resistance change rate is:
±(1%+0.05Ω) Max.. With no evidence of
mechanical damage.
Load life in
humidity
Load life
Normal type:
±1.5%;
flame retardant type: ±5%
Normal type: ±1.5%;
flame retardant type: ±5%
Test Method (JIS-C-5201&5202)
4.8 Natural resistance changes per temp. Degree centigrade
R 2 − R1
∗ 106 (PPM/℃)
R1 (T2 − T1 )
R1: resistance value at room temp. (T1)
R2: resistance value at room temp. +100℃ (Tt2)
Test pattern: room temp. (T1), room temp. +100℃(T2)
4.13 Permanent resistance change after the application of a
potential of 2.5 times RCWV for 5 seconds.
4.7 Resistors shall be clamped in the trough of a 90°metallic
v-block and shall be tested at ac potential respectively specified in
the above list for 60-70 seconds.
4.28 Resistance change after 10,000 cycles (1 second “ON ”, 25
seconds “OFF ”) at 4 times RCWV.
4.18 Permanent resistance change when leads immersed to a point
2.0-2.5mm from the body in
260℃±5℃ solder for 10±1 seconds.
4.29 Specimens shall be immersed in a bath of trichloroethylene
completely for 3 min. With ultrasonic
4.16 Direct load:
Resistance to a 2.5 kg direct load for 10 seconds in the direction of
the longitudinal axis of the terminal leads.
Twist test:
Terminal leads shall be bent through 90°at a point of about 6mm
from the body of the resistor and shall be rotated through 360°
about the original axis of the bent terminal in alternating direction
for a total of 3 rotations.
4.17 The area covered with a new, smooth, clean, shiny and
continuous surface free from concentrated pinholes.
Test temp. Of solder:245℃±3℃
Dwell time in solder: 2~3seconds.
4.19 Resistance change after continuous five cycles for duty cycle
specified:
Step
Temperature
Time
1
-55℃ ± 3℃
30min
2
Room temp.
10 – 15min
3
+155℃ ± 2℃
30min
4
Room temp.
10 – 15min
7.9 resistance change after 1,000 hours (1.5 hours “ON”,0.5 hour
“OFF”) at RCWV in a humidity test chamber controlled at 40℃±2℃
and 90 to 95% relative humidity.
4.25.1 permanent resistance change after 1,000 hours operating at
RCWV with duty cycle of 1.5 hours “ON”, 0.5 hour “OFF” at
70℃±2℃ ambient.
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8.0 Explanation of Part No. System:
The standard Part No. includes 14 codes which explained as below:
8.1
8.2
1st ~ 4th codes: Item type
8.1.1 The 1st to 3rd codes: Product type;
8.1.2 The 4th code: Special feature.
Example: MFRF= Metal Film Fixed Resistors Non-flame type;
5th~6th codes: Power rating.
8.2.1 W=Normal Size; S=Small Size; U=Ultra Small Size;
1/16W~1/2W (<1W )
Wattage
1/2
1/3
1/4
1/5
1/6
1/8
0.6
0.4
Small Size
S2
S3
S4
S5
S6
S8
06
/
Normal Size
W2
Ultra-Small Size
U2
Wattage
1
1W~16W (≧1W )
W3
W4
U3
2
U4
1W
2W
3W
Ultra-Small Size
1U
2U
3U
1S
2S
5
3S
8.2.2 If power rating is less than 1 watt,
be a number or a letter code.
W6
U5
3
Normal Size
Small Size
W5
Example: WA=1/10W; U2=1/2W-SS.
U6
7
/
U8
8
/
/
9
04
10
15
5W
7W
8W
9W
AW
FW
5U
7U
8U
9U
AU
FU
5S
5th
W8
7S
8S
9S
AS
code would be the letters W, S or U and
6th
FS
code would
8.2.3 If power rating is between 1~16 watt, 5th code would be a number or a letter code and 6th
8.3
8.4
code will be the letters of W, S or U.
Example: AW=10W; 3S=3W-S
7th
code: Resistance Tolerance.
B=±0.1% C=±0.25%
8th
~
11th
D=±0.5%
codes: Resistance Value
F=±1%
8.4.1 If resistance value belongs to E-24 series:
G=±2%
J=±5%
8.4.1.1 8th code must be “0”
8.4.1.2 9th & 10th codes: Significant figures of the resistance;
8.4.1.3 11th code: Power of ten.
8.4.2 If resistance value belongs to E-96 series:
8.4.2.1 8th ~10th codes: Significant figures of the resistance
Approved
8.4.2.2 11th code: Power of ten.
William Zhao
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8.4.2.3 We use this code in 11th code:
8.5
0=100
1=101
J=10-1
2=102
K=10-2
L=10-3
A=Tape/Box (Ammo pack)
B=Bulk/Box
12th~14th codes.
8.5.1 12th code: Packaging Type
3=103
4=104
M=10-4
5=105
T=Tape/Reel P=Tape/Box of PT-26
8.5.2 13th code: Packing Quantity of Tape/Box & Tape/Reel packaging types.
A=500pcs
B=2500pcs
1=1000pcs 2=2000pcs
8.5.3 If product is FORMED, 13th~14th codes are forming types
MF=M-type with flattened lead wire
MK= M-type with kinked lead wire
ML= M-type with normal lead wire
F3= F3-type
8.5.4 14th code: Special features of additional information
1=Avisert type 1
3=Avisert type 3
A=Cutting type CO 1/4W-A type
9.0 Order procedure ( Example: MFR 2W ±1% 200KΩ T/B-1000 )
M
F
R
Product Type:
MFR=Metal film
fixed resistors
0
2
W
Wattage:
Normal size:
W8=1/8W
W4=1/4W
W2=1/2W
1W=1W
2W=2W
3W=3W
Small size:
S4=1/4W-S
S2=1/2W-S
06=0.6W-S
1S=1WS
2S=2WS
3S=3WS
Extra small size:
U2=1/2WSS
04=0.4WSS
Special Features:
0= Standard product
F= Flame Retardant
I= Non-inductive
F
2
0
F1= F1-type
F2= F2-type
MC= M type with kinked lead and narrow pitch wire
P=Panasert type
F0= F-type
0
2=Avisert type 2
B= Cutting type CO 1/4W-B typ
3
A
Resistance Value:
±1%、±2% series:
1st ~3rd codes: Significant
figures of the resistance
4th code: Power of ten
Example: 20KΩ =2002
±5% series:
1st code:”0”;
2nd ~3rd codes: Significant
figures of the resistance
4th code: Power of ten.
Example: 20KΩ=0203
J=10-1; K=10-2; L=10-3
Tolerance (& TCR):
B=±0.1%±15PPM
F=±1% ±50PPM
C=±0.25%±25PPM G=±2% ±100PPM
D=±0.5%±50PPM
J=±5% ±200PPM
1
0
Packing quantity:
10=1,000pcs
20=2,000pcs
30=3,000pcs
40=4,000pcs
50=5,000pcs
A0=500pcs
B0=2,500pcs
Forming type:
MF=MB- type
MK=MK type
MC=MC-type
ML=M type
F0=F type
F1=F1 type
F2=F2 type
F3=F3 type
Packing Type:
A=Tape/Box
T=Tape/Reel
B=Bulk/Box
P=Tape/Box of PT-26 product
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10.0 Standard Packing:
10.1 Tapes in Box Packing
Part No.
O
P
A±5
B±5
5±0.3
75
70
MF 1/8W
52±1
5±0.3
MF 1/4W
52±1
5±0.3
MF 1/4WS
MF 0.4WSS
MF 1/2WSS
MF 1/2WS
MF 1/2W
MF 0.6WS
MF 1WS
MF 1W
MF 2WS
MF 2W
MF 3WS
MF 3W
52±1
52±1
52±1
52±1
52±1
52±1
58±1
58±1
58±1
5±0.3
5±0.3
5±0.3
5±0.3
5±0.3
5±0.3
5±0.3
5±0.3
65±5
10±0.5
65±5
10±0.5
65±5
10±0.5
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75
75
75
70
98
70
75
116
75
45
75
70
75
116
80
82
80
80
90
90
90
70
82
88
119
88
Dimension of T/B (mm)
C±5
Qty/Box
255
5,000pcs
255
5,000pcs
255
255
255
255
255
255
255
255
255
255
255
255
5,000pcs
5,000pcs
5,000pcs
2,000pcs
1,000pcs
5,000pcs
1,000pcs
1,000pcs
1,000pcs
1000pcs
1000pcs
500pcs
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10.2 Tapes in Reel Packing
Part No.
MF 1/8W
MF 1/4WS
MF 1/4W
MF 0.4WSS
MF 1/2WSS
MF 1/2WS
MF 1/2W
MF 0.6WS
MF 1WS
MF 1W
MF 2WS
MF 2W
MF 3WS
MF 3W
A
W±5
H±5
L±5
73±2
85
295
293
73±2
73±2
73±2
73±2
73±2
73±2
73±2
73±2
73±2
73±2
80±5
80±5
80±5
85
85
85
85
85
85
85
85
85
85
95
95
95
295
295
295
295
295
295
295
295
295
295
295
295
295
Dimension of Reel (mm)
Qty/Box
293
5,000pcs
293
5,000pcs
5,000pcs
293
5,000pcs
293
5,000pcs
293
4,000pcs
293
4,000pcs
293
5,000pcs
293
2,500pcs
293
2,500pcs
293
2,500pcs
293
1,000pcs
293
1,000pcs
293
1,000pcs
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10.3 Bulk in Box Packing
Part No.
MF 1/8W
A±5
B±5
C±5
140
80
240
140
MF 1/4WS
MF 1/4W
80
140
MF 0.4WSS
80
140
MF 1/2WSS
80
140
MF 1/2WS
80
140
MF 1/2W
MF 0.6WS
80
140
MF 1WS
MF 1W
80
140
MF 2WS
MF 2W
80
140
MF 3WS
MF 3W
500/20,000pcs
240
1,000/20,000pcs
240
500/8,000pcs
500/10,000pcs
250/2,000pcs
240
500/10,000pcs
240
100/2,500pcs
200/4,000pcs
100/2,500pcs
240
80
140
240
1,000/20,000pcs
240
80
140
1,000/20,000pcs
240
80
140
240
240
80
140
Qty/Box
240
80
140
Dimension of Box (mm)
100/1,500pcs
240
80
100/1,500pcs
240
100/1,500pcs
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11.0 Note
11.1 UNIOHM strongly recommend the storage condition:
Temperature: 15℃~35℃; Humidity :25%~75%.
Even under storage condition UNIOHM recommended, solderability of products over 1 year
would be still degraded.
11.2 Store / transport cartons in the correct direction, otherwise bent leads would be occurred due to
excessive stress applied when dropping of a carton.
11.3 Product performance and soldered connections may deteriorate if the products are stored in the
following places.
11.3.1 In high electrostatic;
11.3.2 In direct sunshine, rain, snow or condensation;
11.3.3 Exposed to sea winds or corrosive gases which contains Cl2, H2S, NH3, SO2, and NO2
Approved
Checked
Prepared
File NO.
Edition
Date
Page
William Zhao
Apple Liu
Wu Yiyun
JLC-01-008
1
2016/5/9
13/13