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Solder Joint Design Calculations
Joint allowable stress in shear

Shear stress in joint

Strength check
t
£
tA
Minimum length of overlap

Minimum overlap length
Lopt = max
{Lmin, L1}
where:

where:
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SUS
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joint strength in shear(psi) [MPa]
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kS
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shear safety coefficient
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F
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transferred force (lbs) [N]
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b
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width of connected parts (in) [mm]
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L
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length of overlap (in) [mm]
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SUb
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tensile strength of basic material (psi)
[MPa]
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s
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thickness of connected parts (in.) [mm]
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