
Littelfuse
Electrically identical substitute from the same Littelfuse series, differing only by reel quantity.
PGB1010603NR is a 24V polymeric ESD suppressor in an 0603 package, known for its ultra-low 0.06pF capacitance. Finding alternatives requires matching voltage, capacitance, and package.
The 0603 package is a standard size with many options.
Mismatched voltage causes failure; higher capacitance degrades high-speed signals.
Direct replacement for PGB1010603NR should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Use PGB1010603MR from the same Littelfuse series for a direct, low-risk replacement.
The main risk when substituting is choosing a part with a lower voltage rating or significantly higher capacitance.

Littelfuse
Electrically identical substitute from the same Littelfuse series, differing only by reel quantity.
| Feature / factor | PGB1010603NR | PGB1010603MR | 0603ESDA-LP(24) | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | - | 0603 — Form factor matches. | |
| Voltage | 24VDC | 24VDC | - | 24V — Operating voltage matches. | |
| Capacitance | 0.06 pF | 0.06 pF | - | 0.2 pF — Capacitance is over 3x higher, may affect signal integrity. | |
| Temperature | -65°C to +125°C | -65°C to +125°C | - | -65°C to +125°C — Operating temperature range is identical. | |
| Packaging | 4k pcs/reel | 10k pcs/reel | - | 10k pcs/reel — Differs in reel size, check manufacturing needs. | |
| Technology | Polymeric Suppressor | - | Silicon Diode | Silicon Diode — Different protection technology (Silicon vs. Polymeric). | |
| Leakage | <0.1 nA | - | 200 nA | 200 nA — Significantly higher leakage current. |
Verified drop-in options for PGB1010603NR are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.