Is there a pin-compatible replacement for SLF7045T-4R7M2R0-PF?

No direct pin-compatible replacement has been identified. The closest candidates, like the TDK SPM6530T-4R7M-HZ, have slightly different package dimensions and require careful layout verification before substitution.

What risks should I check before replacing SLF7045T-4R7M2R0-PF?

Key risks include: 1) Package Mismatch: Most alternatives have different footprints requiring a PCB redesign. 2) Electrical Performance: Check DC Resistance (DCR), as higher DCR increases power loss. 3) Current Ratings: Ensure saturation (Isat) and RMS (Irms) currents meet or exceed your needs.

SLF7045T-4R7M2R0-PF Alternatives, Datasheet & Cross Reference | TDK Electronics AG

Finding a replacement for the TDK SLF7045T-4R7M2R0-PF 4.7µH inductor involves balancing package size, current ratings, and DC resistance. Several functional alternatives and upgrades exist that may require board layout adjustments.

AI replacement insight

Package riskhigh

No candidates have an identical footprint, requiring layout verification or redesign.

Electrical risklow

Several candidates offer superior current ratings and comparable or better DCR.

Can it be replaced directly?

No direct drop-in replacement is available. All suitable alternatives require PCB layout review due to package differences.

Best replacement path

Upgrade to TDK's SPM6530T-4R7M-HZ for superior current handling, but verify the slightly different PCB footprint.

Main risk

The primary risk is mechanical incompatibility; no identified alternatives share the exact 7.0mm x 7.0mm footprint of the original part.

Recommended alternatives

AEC-Q200 qualified upgrade with much higher current ratings and similar DCR in a comparable package.

View details

Alternative comparison matrix

Feature / factor	SLF7045T-4R7M2R0-PF	SPM6530T-4R7M-HZ	VLS6045EX-4R7M-H	Compatibility / risk
Package	7.0mm x 7.0mm x 4.5mm	7.1mm x 6.5mm x 3.0mm	6.0mm x 6.0mm x 4.5mm	7.1mm x 6.5mm x 3.0mm / 6.0mm x 6.0mm x 4.5mm — Slightly different footprint, requires layout check.; VLS6045EX-4R7M-H: Smaller footprint requires board redesign.
Saturation Current A	2.0A	6.2A	5.8A	6.2A / 5.8A — Significantly higher saturation current.; VLS6045EX-4R7M-H: Significantly higher saturation current.
Current A	2.1A	5.6A	4.2A	5.6A / 4.2A — Significantly higher RMS current.; VLS6045EX-4R7M-H: Significantly higher RMS current.
Dcr Ohm	30mΩ	39.4mΩ	27mΩ	39.4mΩ / 27mΩ — Slightly higher DCR, minimal impact.; VLS6045EX-4R7M-H: Lower DCR improves efficiency.
Temperature	-40°C to +105°C	-40°C to +125°C	-	-40°C to +125°C — Wider operating temperature range.

Application & sourcing insights

Questions & answers

The TDK SPM6530T-4R7M-HZ is a strong upgrade, offering much higher current ratings in a very similar package. However, its footprint (7.1x6.5mm) requires verification against your 7.0x7.0mm layout.