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Technical Information
MOULDING MATERIAL
SQUARE & ROUND WIRE PIN MATERIAL
TERMINAL MATERIAL
MOULDING MATERIAL
Formers bobbins and covers are currently available in reinforced nylon 66 to UL94HB, or reinforced nylon 66, flame
retardant to UL94VO. Reinforced nylon 66 is a popular choice of material, owing to its excellent thermal and mechanical
properties. It withstands class B temperatures (130°C) continuously, and up to 160°C for short periods. Flame retardant
reinforced nylon 66 has similar properties to nylon 66 but with a halogen free additive giving it flame retardancy to
UL94VO.
| Property |
Test
Method
ASTM |
Units |
Glass Fibre
Reinforced
Nylon 66 |
Glass Fibre
Reinforced
Flame
Retardant
Nylon 66 |
| Specific Gravity |
D792 |
Kg/m³ |
1370 |
1380 |
| Water Absorption (24 hrs @ 23°C) |
D570 |
% |
0.95 |
0.75 |
| Heat Distortion Temperature |
D648 |
°C |
235 |
250 |
| Flammability UL94 |
- |
- |
HB |
V0 |
| Oxygen Index |
D2863 |
% |
23 |
30.5 |
| Tensile Breaking Strength |
D638 |
MPa |
160 |
135 |
| Elongation at Break |
D638 |
% |
4 |
2 |
| Flexural Strength |
D790 |
MPa |
235 |
205 |
| Impact Strength |
D256 |
KJ/m² |
14 |
12 |
| Volume Resistivity (RH50) |
D257 |
ohm cm |
5.1012 |
2.5.1013 |
| Dielectric Strength |
D149 |
KV/mm |
25 |
18 |
| Tracking Index |
D3683 |
V |
550 |
375 |
| Material |
Trade Name |
Temp Class |
UL94 Rating |
Manufacturer |
UL File No |
| Nylon 66 30% Glass Filled |
Technyl B218 V30 |
B (130°C) |
HB |
Rhone Poulenc |
E44716 (M) |
| Nylon 66 30% Glass Filled |
Latamid 66H2 G/30 |
B (130°C) |
HB |
Lati |
E54080 (M) |
Nylon 66 25% Glass Filled
Flame Retardant |
Technyl A20V25 |
B (130°C) |
V0 |
Rhone Poulenc |
E44716 (M) |
Nylon 66 25% Glass Filled
Flame Retardant |
Latamid 66H2 G/25
VokB |
B (130°C) |
VO |
Lati |
E54080 (M) |
SQUARE & ROUND WIRE PIN MATERIAL
Typically we use a Copper Tin alloy (Phosphor Bronze) wire designated CuSn6 specification to DIN 17662, CDA 51900, BS PB103.
Specification Table
Specific
Gravity
(g/cm³) |
Coefficient
Thermal
Expansion
(1/°C) |
Specific Heat
(Cal/g °C) |
Thermal
Conductivity
(Cal/cm s °C) |
Electrical
Conductivity
(m/ohm mm²) |
Tensile
Strength
(N/mm²) |
Elongation
(%) |
| 8.73 |
17,3. 10-6 |
0.09 |
0.16 |
9 |
420-1000 |
0-48 |
Coating materials: 1-2 microns Nickel and 4-6 microns SnPb90/10 "Brightplating"
Solderability: to BS 2011, DIN 40.046, IEC 68-2-20
Methods of terminal retention
 |
 |
| BLIND HOLE |
THROUGH HOLE WITH
90° SIDE LEG |
For improved pin retention the wire is 'crimped' to produce an area of upset which on the blind hole method is totally inserted into the bobbin. In the through hole method, the crimp is partially inserted. The crimped area of the pin prevents 'push back' and the 90° bend prevents 'pull out'.
Bobbins can be pinned to any configuration as specified by the customer.
TERMINAL MATERIAL
Typically we use a 0.6mm half card CZ108 Brass.
Coating materials: 1-2 microns Nickel and 4-6 microns SnPb 90/10 "Brightplating".
Solderability: To BS 2011, DIN 40.046, IEC 68-2-20
Methods of terminal retention
Their terminals have a barbed effect, which when inserted into the bobbin ensures a firm fitting.
Bobbins can be terminated to any configuration as specified by the customer.
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