Inductor Alternative Comparison Pilot
Compare inductance, DCR, current test conditions and mechanical dimensions using manufacturer evidence, and export a reviewable substitution record.
6 pilot parts · Coilcraft XAL5030 / Bourns SRP5030TA · 2.2, 3.3 and 4.7 µH
An engineering review of candidates. Equal nominal inductance, higher ratings or a completed checklist do not establish drop-in compatibility. Footprint, DC bias, high-temperature and system validation remain necessary.
Data version: 2026-10-03.1
Local saves include the checklist and notes. Shared links contain part selections and design inputs only, without review records. Reports include source evidence and notes.
Parameters and test conditions
Numeric deltas compare DCR at the same temperature and specification basis only. Current ratings retain manufacturer definitions and are not ranked across different conditions. Each item links to its source PDF page.
| Parameter | A · XAL5030-332MEC | B · SRP5030TA-3R3M | Differences and open checks |
|---|---|---|---|
| Nominal inductance and tolerance | 3.3 µH ±20% Manufacturer PDF · page 1 | 3.3 µH ±20% Manufacturer PDF · page 1 | Same nominal value; verify effective inductance. |
| Inductance test conditions | 1000 kHz · 0.1 Vrms · Test DC bias: 0 A Manufacturer PDF · page 1 | 100 kHz · 1 V · Test DC bias: Not verified / not recorded Manufacturer PDF · page 1 | Test frequency, voltage or recorded conditions differ; inductance is not measured under equivalent conditions. |
| Typical DCR | 21.2 mΩ @ 25 °C Manufacturer PDF · page 1 | 32 mΩ @ 25 °C Manufacturer PDF · page 1 | B − A: +10.8 mΩ (+50.943%) |
| Maximum DCR | 23.3 mΩ @ 25 °C Manufacturer PDF · page 1 | 38 mΩ @ 25 °C Manufacturer PDF · page 1 | B − A: +14.7 mΩ (+63.09%) |
| Saturation current Isat | 8.7 A · ΔL −30% (Typical) @ 25 °C Manufacturer PDF · page 1 | 8 A · ΔL −20% @ 25 °C Manufacturer PDF · page 1 | Drop criteria or recorded conditions differ. Do not directly rank Isat. |
| Temperature-rise current Irms | 8.1 A · ΔT 40 °C · Test ambient: 25 °C Manufacturer PDF · page 1 | 5 A · ΔT 40 °C · Test ambient: Not verified / not recorded Manufacturer PDF · page 1 | Even at the same 40°C rise, PCB, cooling and complete test conditions are not normalized. |
| Plan dimensions with tolerances | 5.28 ±0.2 × 5.48 ±0.2 mm Manufacturer PDF · page 4 | 5.7 ±0.3 × 5.2 ±0.2 mm Manufacturer PDF · page 1 | Check pads, orientation and spacing against the drawings. A shared footprint is not guaranteed. |
| Height limit and conditions | 3.1 mm · Mounted limit; tin-silver terminals may add 0.13 mm before mounting. See drawing footnote. Manufacturer PDF · page 4 | 3 mm · From 2.8 ±0.2 mm; plan X includes terminals. Manufacturer PDF · page 1 | Check assembly height, mounting conditions and clearance. |
| Recommended land pattern | Each pad 1.18 × 4.70 mm; center spacing 3.31 mm. Manufacturer PDF · page 4 | Outer span 6.5 mm; inner gap 2.5 mm; pad height 1.8 mm. Manufacturer PDF · page 1 | Check pads, orientation and spacing against the drawings. A shared footprint is not guaranteed. |
| Self-resonant frequency (typical) | 28 MHz Manufacturer PDF · page 1 | 30 MHz Manufacturer PDF · page 1 | Reference only; SRF alone does not determine allowable switching frequency. |
| Shielding | Shielded Manufacturer PDF · page 1 | Shielded Manufacturer PDF · page 1 | Shielding does not ensure equal system EMI. |
| Lifecycle / availability | Not verified / not recorded Manufacturer PDF · page 1 | Not verified / not recorded Manufacturer PDF · page 1 | Confirm lifecycle, stock, lead time and complete ordering suffix before purchase. |
| Numeric bias-curve data | Source curves available; numeric points not curated Manufacturer PDF · page 2 | Source curves available; numeric points not curated Manufacturer PDF · page 2 | Read the curves and validate effective inductance at operating bias and temperature. |
XAL5030-332MEC
Coilcraft · XAL50xx · Document 908
Manufacturer revision: 02/26/26 · Source checked: 2026-10-03
Open manufacturer data sheet ↗SRP5030TA-3R3M
Bourns · SRP5030TA
Manufacturer revision: 11/19 · Source checked: 2026-10-03
Open manufacturer data sheet ↗Continue with the selected part’s inductance, tolerance, current ratings and maximum DCR. Shared Buck / Boost currents are recalculated; rating-condition checkboxes stay unchecked. Without imported operating conditions, edit the tool’s example current first. For copper loss, the selected part is A; the other is B only when nominal inductance and tolerance match. Both use the same estimated current; verify actual effective inductance.
Substitution review record
A checkmark records your own review, not platform certification. Changing parts clears the checklist and notes. Notes do not overwrite manufacturer data.