
NationStar
NationStar NCD0603B1 is a close blue 0603 LED candidate for NCD0603B5.
NCD0603B5 is a blue 0603 indication LED. Alternatives should be treated as review candidates until pin polarity and optical output are checked.
Vf and current bins differ.
0603 matches; pinout not checked.
No firmware interface.
Lifecycle data is mixed.
No confirmed pin-compatible replacement is proven from the provided fields.
Review NCD0603B1 first, then E6C0603QBAC1UDA or XL-1608UBC-06A.
Pin polarity and brightness at 5mA are not verified.

NationStar
NationStar NCD0603B1 is a close blue 0603 LED candidate for NCD0603B5.
| Feature / factor | NCD0603B5 | NCD0603B1 | E6C0603QBAC1UDA | XL-1608UBC-06A | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — same case; E6C0603QBAC1UDA: same case; XL-1608UBC-06A: same case; ORH-B36G: same case |
| Pinout | 2-pin LED | 2-pin LED | 2-pin LED | 2-pin LED | 2-pin LED — polarity not checked; E6C0603QBAC1UDA: polarity not checked; XL-1608UBC-06A: polarity not checked; ORH-B36G: polarity not checked |
| Voltage | 3.0V typ | 3.0V typ | 3.0V typ | 2.6-3.4V | 3.0V typ / 2.6-3.4V / 2.6V typ — same typ Vf; E6C0603QBAC1UDA: same typ Vf; XL-1608UBC-06A: range only; ORH-B36G: resistor changes |
| Current | 5mA test | 20mA test | 20mA test | 20mA test | 20mA test / 2mA test — retest brightness; E6C0603QBAC1UDA: different bin point; XL-1608UBC-06A: retest at target; ORH-B36G: different drive point |
| Application | 470nm 140deg | 468nm 130deg | - | - | 468nm 130deg — close color, narrower |
| Temperature | -30 to 85C | - | missing | -40 to 85C | missing / -40 to 85C / -25 to 80C — not in ES; XL-1608UBC-06A: wider low end; ORH-B36G: reduced range |
NCD0603B1 is the closest provided candidate, but it still needs pinout and 5mA brightness review.