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Suspension wires
Download Whiscut's catalog here.

WHISCUT
Whiscut is "suspension wire" that has excellent solderability and straightness. It is widely used for suspending the objective lens of optical pickups, and other applications.
Features
Has improved straightness as a result of our independent fabrication method.
The surface is coated with solder for improved solderability.
Available either in reels or as cut wire.
Can be coated with an insulating material (optional).
Applications
Suspension wire for retaining the objective lens of optical pickups.
Construction
Specifications
Solder-coated phosphor
bronze straight wire
Solder-coated beryllium
copper straight wire
Phosphor bronze flat
straight wire
Beryllium-copper flat type
straight wire
Symbol Reel SP·PBW-MS ESP·BeCW-MS PBR-MS BeCR-MS
Cut wire SP·PBW-MC ESP·BeCW-MC PBR-MC BeCR-MC
Conductor material
(JIS alloy No.)
Phosphor bronze
(C5212W)
Beryllium copper
(C1720W)
Phosphor bronze
(C5212W)
Beryllium copper
(C1720W)
Conductor material
(JIS alloy No.)
Phosphor bronze
(C5212W)
Beryllium copper
(C1720W)
Phosphor bronze
(C5212W)
Beryllium copper
(C1720W)
Coating composition Sn 60%-Remainder Pb Sn 60%-Remainder Pb - -
Wire diameter (mm) 0.0800.200 0.0800.180 As shown in the table below As shown in the table below
Symbol Reel (mm) Max length 10,000 Max length 10,000 Max length 5,000 Max length 5,000
Cut wire (mm) 1040 (±0.1) 1040 (±0.1) 1040 (±0.1) 1040 (±0.1)
*We also manufacture uncoated straight round wire.
Range over which flat straight wire can be manufactured
Thickness (mm) Width (mm) Ratio of thickness to width
(width dimension / Thickness dimension)
Applicable round wire diameter (mm)
Lower limitUpper limit 0.0500.090 0.0950.150 1.52.5 φ0.080φ0.125
*All of the above items must be satisfied.
Characteristics
Solder-coated phosphor
bronze straight wire
Solder-coated beryllium
copper straight wire
Phosphor bronze
flat straight wire
Beryllium-copper
flat type straight wire
Bending rate radius
(mm)
min 1,000 min 1,000 min 1,000 min 1,000
Thickness of coating
(mm)
0.11.0 0.11.0 - -
Solder wetting time
(sec)
max 1 max 3 max 7 max 7
Tensile strength
(N/mm2)
min 830 min 980 min 830 min 980
Elongation
(%)
max 5 max 5 max 5 max 5
Young's modulus
(GPa)
98 130 98 130
Specific gravity 9.05 8.66 9.05 8.37
*Young's modulus is the value calculated from the sag of the wire due to its own weight.

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