Is there a pin-compatible replacement for LQH3NPN100MJRL?

Bourns SRN3015-100M shares the same 3x3mm footprint and pinout, making it a potential form-fit replacement. However, a slight difference in saturation current requires engineering review before drop-in use.

What risks should I check before replacing LQH3NPN100MJRL?

Key risks include package mismatch requiring board redesign, lower saturation current (Isat) causing circuit instability under peak loads, and higher DC resistance (DCR) increasing power loss and heat.

LQH3NPN100MJRL Alternatives, Datasheet & Cross Reference | Murata Manufacturing Co., Ltd.

Murata's LQH3NPN100MJRL is a 10µH shielded power inductor in a compact 3x3mm package, common in DC-DC converters. When seeking alternatives, focus on matching inductance, package size, and ensuring current ratings meet or exceed original specifications.

AI replacement insight

Package riskhigh

Most alternatives have different footprints, requiring board redesign.

Electrical riskmedium

Saturation current (Isat) and DC resistance (DCR) must be carefully checked.

Sourcing risklow

Multiple vendors produce similar 10µH inductors.

Can it be replaced directly?

No exact drop-in replacement is identified. Bourns SRN3015-100M is the closest form-fit match but has a slightly lower saturation current, requiring review.

Best replacement path

Evaluate Bourns SRN3015-100M for form-fit compatibility, checking if the minor Isat downgrade is tolerable. If not, a board redesign for a higher-spec part like Bourns SRP4020TA-100M is the next option.

Main risk

The main risk is package incompatibility, which forces a PCB redesign. For form-fit candidates, the primary risk is a lower saturation current (Isat) which can impact power supply stability.

Recommended alternatives

A strong form-fit candidate with a matching package, but a slightly lower saturation current requires review.

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Alternative comparison matrix

Feature / factor	LQH3NPN100MJRL	SRN3015-100M	SRP4020TA-100M	DFE322512F-100M=P2	Compatibility / risk
Package	3.0x3.0mm (3030)	3.0x3.0mm (3015)	4.0x4.0mm (4020)	3.2x2.5mm (1210)	3.0x3.0mm (3015) / 4.0x4.0mm (4020) / 3.2x2.5mm (1210) — Same footprint as target.; SRP4020TA-100M: Requires board redesign.; DFE322512F-100M=P2: Different footprint, requires board redesign.
Saturation Current A	0.9 A	0.88 A	2.3 A	1.7 A	0.88 A / 2.3 A / 1.7 A — Slightly lower saturation current, verify in-circuit.; SRP4020TA-100M: Significantly higher peak current capability.; DFE322512F-100M=P2: Higher peak current capability.
Current	0.81 A	1.0 A	1.8 A	1.1 A	1.0 A / 1.8 A / 1.1 A — Higher thermal current rating.; SRP4020TA-100M: Higher thermal current rating.; DFE322512F-100M=P2: Higher thermal current rating.
Dcr Ohm	0.24 Ω	0.276 Ω	0.243 Ω	0.324 Ω	0.276 Ω / 0.243 Ω / 0.324 Ω — Slightly higher DC resistance.; SRP4020TA-100M: Comparable DC resistance.; DFE322512F-100M=P2: Higher DCR may increase losses.

Application & sourcing insights

Questions & answers

Bourns SRN3015-100M is a strong candidate with a matching package and improved thermal current rating, but verify its slightly lower saturation current (0.88A vs 0.9A) is acceptable for your application.