Brand new Cree Screen Master 4-mm Oval Blue LED C4SMB/C4SMC.
Boxes of 3000 pcs.
Variety of luminous intensity and color (wavelength) bins available.

Manufacturer data.
Size (mm): 4
Typical Forward Voltage: 3.2
Maximum Forward Voltage: 3.8
Maximum Forward Current: 35mA
Color and Typical Dominant Wavelength: Green 524nm
Typical Luminous Intensity (IF = 20 mA): 1400

INTENSITY BIN LIMIT (IF = 20 mA)
Blue:
Bin Code  Min.(mcd)  Max.(mcd)
T2        1205       1310
T3        1310       1415
T4        1415       1520
U1        1520       1672

COLOR BIN LIMIT (IF = 20 mA)
Blue:
Bin Code  Min.(nm)  Max.(nm)
B4        465       470
B5        470       475

Complete data-sheets are available online.

Bins available
Blue C4SMC-BGF-T2-b4-00
C4SMC-BGF-T2-b4-00
C4SMC-BGF-T3-b3-00
C4SMC-BGF-T3-b4-00
C4SMC-BGF-T4-b5-00
C4SMC-BGF-T4-b5-00
C4SMC-BGF-U2-b5-00
C4SMB-BGF-U1-B4-00
C4SMC-BGF-U1-b5-00
C4SMC-BGF-U1-b5-00
Contact if particular bin required.