MH3710MOJ [TTELEC]
High Voltage Metal Film Resistors; 高压金属膜电阻器
| 型号： | MH3710MOJ |
| 厂家： | 
TT Electronics |
| 描述： | High Voltage Metal Film Resistors |
| 文件： | 总2页 (文件大小：88K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
High Voltage
Metal Film Resistors
Welwyn Components
MH Series
• BSEN 60065 Approval for MH37
in value range 680K to 3M
High working voltage to 3.5KV
•
•
•
•
Small size
High pulse load capability
Robust cement coating
Value up to 10M
•
Electrical Data
MH25
0.25
MH37
Power rating at 70°C max
Resistance range
watts
0.5
ohms
100K - 10M
1,600
100K - 3M
Limiting element voltage
Isolation voltage
volts dc or ac peak
3,500
volts
ppm/°C
%
700
100
TCR
Resistance tolerance
Standard values
1, 2, 5
E24 and E96 preferred
Thermal impedance
Ambient temperature range
°C/watt
°C
140
112
- 55 to 155
Physical Data
Dimensions (mm) and Weight (g)
PCB
Min
mounting
centres
Bend
d
Type
L max
6.2
D max
2.5
f min
21.0
19.6
d nom
0.6
Radius Wt.nom
D
L
f
MH25
MH37
10.2
12.7
0.6
1.2
0.3
0.5
9.0
3.7
0.8
Construction
Terminations
Thin film material is sputtered on to high grade ceramic rods.
Nickel plated steel caps are force fitted and the termination
wires are welded to the caps. The value is obtained by a
helical cut in the film and finally the resistor body is protected
by a cement protection applied so that the terminations
remain completely clear.
Material
Solder-coated copper wire.
Strength
The terminations satisfy the requirements of
IEC 68.2.21.
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Solvent resistance
Marking
The body protection and marking are resistant to all normal
1% tolerance resistors are colour coded with 5 bands.
industrial cleaning fluids suitable for printed boards.
2% and 5% tolerance have 4. Band IEC 62 colours are used.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue E · 10.05
191
High Voltage
Metal Film Resistors
MH Series
Welwyn Components
Performance Data
Maximum
Typical
Load at rated voltage : 1000 hrs at 70°C
Derating from rated power at 70°C
Overload
∆ R%
1.5
0.4
Zero at 155°C
∆ R%
∆ R%
∆ R%
1.0
1.5
1.5
0.25
0.2
56 days at DHSS
Climatic
0.2
Climatic category
55/155/56
700 min
Temperature rapid change
Resistance to solder heat
Vibration and bump
Voltage proof
∆ R%
∆ R%
∆ R%
volts
0.5
0.5
0.5
0.05
0.05
0.05
Application Notes
To ensure reliable performance at high voltages care should
be taken to avoid potential sources of ionic contamination
contacting the resistor body, for example, flux applied by
spraying, encapsulation materials or contaminants from the
environment of use.
Standard Quantities Per Package
Packaging
All MH series resistors are supplied tape packed ready for
loading on automatic sequencing and insertion machines.
Type
MH25
MH37
Ammo pack
5000
2500
Component wires will not protrude beyond the outside edge
of the tape.
6
6
52
Alternative packing available by request.
5
Lead Formed Resistors can also be supplied. Standard options
of Lancet, Radial and Goal Post forming are shown in the
Lead Form information sheet.
f1
f2
Body Location f1 – f2 ≤ 1.4 mm
Ordering Procedure
Specify type reference, value and tolerance as shown in this example of MH25 10MR 1%:
Type
MH25
10MO
F
Resistance value
(IEC62 code)
Tolerance
(IEC62 code)
F
1%
G
J
2%
5%
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue E · 10.05
192
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