1.0mm Height 40A Inductor Bulk Buy - High Saturation Current for DC-DC Converters

Bulk Solutions for 1.0mm Height 40A Inductors: Powering Space-Constrained DC-DC Converters at Scale

For engineers battling space and thermal constraints in modern electronics, the 1.0mm height inductor 40A represents a breakthrough. These ultra-thin components deliver unprecedented current density while solving EMI, thermal, and layout challenges in wearables, IoT modules, and medical devices. Here’s why global OEMs are bulk sourcing them for next-gen designs.

The 40A Revolution in Sub-1.2mm Profiles

Traditional inductors sacrifice current capacity when miniaturized. Ferrtx’s LPS series shatters this tradeoff:

Unmatched Power Density: LPS4010 inductors achieve 40A in 1.0mm profiles (PDF: LPS4010-1R0N) – 60% higher than industry averages .
Ultra-Low DCR (0.01Ω): Magnetic powder molding reduces resistive losses by 45% vs. ferrite cores, slashing thermal stress .
EMC Hardened: Closed-flux structures suppress EMI by 20dB, critical for FCC/CE-certified products.

Designer Tip: Pair LPS4018 (1.8mm/4.0A) with 15W fast-charging ICs. Its 0.03Ω DCR (PDF) keeps ΔT≤22°C in 5mm² layouts .

Space-Constrained DC-DC Converter Inductor Implementation

When PCB real estate is scarce, follow these best practices:

A. Topology Optimization

Buck Converters: Use 1.0-2.2μH values (e.g., LPS4012-2R2N) for 3MHz switching – reduces L×C footprint by 70% .
Boost Circuits: Select 4.7-10μH (LPS4020-4R7M) with ≥6A Isat for battery-powered devices .

B. Layout Rules

Parameter	Standard Inductor	Ferrtx 1.0mm Solution
Clearance to Sensors	5mm+	2mm (shielded flux)
Thermal Vias Required	Yes	No (DCR<0.02Ω)
Height Above PCB	1.8-3.0mm	1.0mm (PDF: LPS4010)

Case Study: A fitness tracker reduced PCB area 32% by switching to LPS4010 inductors while maintaining 2A charge current.

Why High Saturation Current SMD Inductors Matter

Saturation current (Isat) defines reliability in transient-heavy systems:

LPS8040 Series delivers 13.8A Isat in 0.82μH (PDF: LPS8040-R82N) – protects against USB-PD voltage spikes.
Avoid Core Collapse: At >30% inductance drop (PDF notes), voltage ripple spikes 300%. Ferrtx inductors maintain <10% drop at rated Isat.

Failure Prevention: In motor drives, undersized inductors overheat at stall currents. LPS8030 (3.3μH/4.2A Isat) survives 200% overloads for 5ms .

Bulk Buy Advantages for High-Volume OEMs

Procuring 1.0mm height inductor wholesale yields:

Cost Savings: 15-30% reduction vs. piecemeal sourcing (MOQ: 10K+ units) .
Supply Chain Security: Dedicated production lines for LPS series ensure 8-week lead times during shortages.
Consistency: ±2% DCR tolerance across batches vs. industry-standard ±20%.

Compliance Ready: All inductors include RoHS/REACH documentation – accelerate EU/NA market entry .

Implementation Checklist for Engineers

Current Verification:
- Calculate peak transient current × 1.5 ≤ Isat (PDF tables)
Thermal Validation:
- Ensure Irms (ΔT=40°C rating) exceeds RMS operating current
EMI Stress Test:
- Probe near antennas/sensors at 100kHz-3MHz (critical for BLE/WiFi)

Scaling Miniature Power Designs

From smartwatches to endoscopic capsules, space-constrained DC-DC converter inductors must balance milliohm-level DCR, amp-level current, and sub-millimeter profiles. Ferrtx’s LPS series delivers this trifecta, with high saturation current SMD Inductor options scaling to 13.8A.

For volume pricing on LPS4010 (1.0mm/40A) or custom solutions:
Email: sales@ferrtx.com
Attach your schematic for a free Isat/DCR analysis

August 14, 2025