
Vishay
A pin-compatible, AEC-Q200 qualified alternative; requires verification of power dissipation.
SCR0805F5K1 is a general-purpose 5.1kΩ, 1%, 0.125W thick film resistor in a standard 0805 package. Numerous pin-compatible alternatives exist, but require careful engineering review of power dissipation and technology differences.
Substitutes match power rating but lack safety margin.
All candidates share the same 0805 package.
Multiple vendors produce similar parts.
Direct replacement for SCR0805F5K1 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Use a thick film, 0805, 5.1kΩ, 1% resistor like RTT055101FTP or the AEC-Q200 qualified CRCW08055K10FKEA, after verifying power requirements.
The primary risk is the lack of power rating margin in common substitutes, which could lead to overheating if the circuit operates near the 0.125W limit.

Vishay
A pin-compatible, AEC-Q200 qualified alternative; requires verification of power dissipation.
| Feature / factor | SCR0805F5K1 | CRCW08055K10FKEA | RTT055101FTP | RT0805BRD075K11L | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 | 0805 | 0805 | 0805 | 0805 — Form factor matches.; RTT055101FTP: Form factor matches.; RT0805BRD075K11L: Form factor matches. |
| Resistance | 5.1kΩ, ±1% | 5.1kΩ, ±1% | 5.1kΩ | 5.11kΩ | 5.1kΩ, ±1% / 5.11kΩ — Identical resistance and tolerance.; RTT055101FTP: Identical nominal resistance.; RT0805BRD075K11L: Slightly different value, but within target's tolerance. |
| Power | 0.125W | 0.125W | 0.125W | - | 0.125W — Matches target, but offers no safety margin per ER-RES-003.; RTT055101FTP: Matches target, but offers no safety margin per ER-RES-003. |
| Application | Standard | AEC-Q200 | - | - | AEC-Q200 — Candidate is automotive qualified. |
| Tolerance | ±1% | - | ±1% | ±0.1% | ±1% / ±0.1% — Identical tolerance.; RT0805BRD075K11L: Significantly tighter tolerance. |
| Tcr | ±100 ppm/°C | - | ±100 ppm/°C | 25 ppm/°C | ±100 ppm/°C / 25 ppm/°C — Identical temperature coefficient.; RT0805BRD075K11L: Significantly better TCR. |
| Technology | Thick Film | - | - | Thin Film | Thin Film — Different technology may affect pulse handling. |
Verified drop-in options for SCR0805F5K1 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.