No exact replacement is proven. BLM15PX221SN1J or BLM15PX600SN1J may be reviewed for relaxed impedance needs.
Best Alternatives to BLM15PD121SN1D
BLM15PD121SN1D is a 0402 Murata ferrite bead for DC power lines. The listed alternates need electrical and lifecycle review.
AI replacement insight
Electrical riskhigh
Z, current, and DCR vary.
Package riskmedium
0402 matches but pin count is missing.
Firmware risklow
Passive part; not applicable.
Sourcing riskmedium
Several candidates are NRND.
Can it be replaced directly?
No verified pin-compatible replacement is proven from this set.
Best replacement path
Start with BLM15PX221SN1J or BLM15PX600SN1J if impedance change is acceptable.
Main risk
Impedance, current derating, DCR, and NRND status differ.
Recommended alternatives
Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.
Alternative comparison matrix
| Feature / factor | BLM15PD121SN1D | BLM15PX221SN1J | BLM15PX600SN1J | BLM15KD300SN1B | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — same case; BLM15PX600SN1J: same case; BLM15KD300SN1B: same case |
| Pinout | 2 pins | missing | missing | missing | missing — catalog shows 0; BLM15PX600SN1J: catalog shows 0; BLM15KD300SN1B: catalog shows 0 |
| Application | 120Ω power bead | 220Ω bead | 60Ω bead | 30Ω bead | 220Ω bead / 60Ω bead / 30Ω bead — higher impedance; BLM15PX600SN1J: lower impedance; BLM15KD300SN1B: much lower Z |
| Current | 1.3A | 1.4A | 2.5A | 3.1A | 1.4A / 2.5A / 3.1A — rating basis unknown; BLM15PX600SN1J: higher current; BLM15KD300SN1B: higher current |
| Resistance | 90mΩ | 100mΩ | 32mΩ | 17mΩ | 100mΩ / 32mΩ / 17mΩ — slightly higher DCR; BLM15PX600SN1J: lower DCR; BLM15KD300SN1B: lower DCR |
| Lifecycle | Active | NRND | NRND | New | NRND / New — sourcing risk; BLM15PX600SN1J: sourcing risk; BLM15KD300SN1B: new product |