LQH32CN1R0M23L - 1uH 800mA Wirewound Inductor | Murata
MPN: LQH32CN1R0M23L β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.11 | $0.11 |
| 10 | $0.09 | $0.90 |
| 100 | $0.07 | $7.00 |
| 500 | $0.055 | $27.50 |
| 1,000 | $0.045 | $45.00 |
LQH32CN1R0M23L Overview
A fixed inductor is a passive two-terminal component that stores energy in a magnetic field when current flows through its winding. Within the passive-component hierarchy, it sits under inductors and coils, alongside chokes and ferrite beads, and serves power management and analog signal chains by filtering ripple, smoothing current, and forming LC resonant tanks. Drum-core wirewound construction achieves high inductance per unit volume at low cost, at the trade-off of an open magnetic structure.
Key features of the LQH32CN1R0M23L include its 1 uH nominal inductance with M-code (+/-20%) tolerance, an 800 mA rated current that supports Buck-boost and step-down converter output stages in the several-hundred-milliamp class, and a low 117 mOhm maximum DCR that limits conduction losses and I2R heating. The wirewound drum-core design provides stable inductance across frequency and temperature for general-purpose power rails.
Technically, the unshielded open-flux construction means magnetic field coupling to neighboring components must be considered during layout, but it also yields lower cost and smaller profiles than shielded types. The 1210 footprint accepts standard reflow soldering and is compatible with pick-and-place assembly.
Typical applications include DC-DC converter output filtering in consumer and industrial electronics, power-supply input chokes, LED driver current smoothing, and general LC filter networks on 4G modules and microcontroller boards.
Designers should derate the 800 mA rating if the part will see elevated ambient temperatures or high ripple current, and should keep sensitive analog traces away from the open flux path of the unshielded core.
This page adds information gain beyond the datasheet: distributor pricing tiers, drop-in same-footprint alternatives, and layout guidance synthesized from manufacturer and distributor sources.
Drop-in alternatives for LQH32CN1R0M23L β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
LQH32CN1R2M23L
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
LQH32PN1R0NN0L
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
LQH32CN1R0M23L Maximum Ratings & Electrical Characteristics
| Inductance | 1 uH |
| Inductance Tolerance | +/-20% (M code) |
| Rated Current | 800 mA |
| Maximum DC Resistance (DCR) | 117 mOhm |
| Shielding | Unshielded |
| Core Type | Drum core |
| Construction | Wirewound |
| Package / Case Code | Nonstandard (1210, 3.2 x 2.5 mm) |
| Mounting Type | Surface Mount (SMD) |
| Type | Fixed Inductor |
| Series | LQH32CN |
| RoHS Status | Compliant |
LQH32CN1R0M23L nonstandard (1210, 3.2 x 2.5 mm) Pin Configuration Guide
Pin configuration for LQH32CN1R0M23L (nonstandard (1210, 3.2 x 2.5 mm) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for LQH32CN1R0M23L.
Refer to the datasheet for full pin configuration.
Typical Applications
LQH32CN1R0M23L is suitable for 6 applications: Buck Converter Output Filtering, DC-DC Input Choke / Pi Filter, LED Driver Current Smoothing, LC Resonant and General Filter Networks, IoT and Wireless Module Power Conditioning, Consumer Electronics Power Rails.
Buck Converter Output Filtering
The LQH32CN1R0M23L's 1 uH inductance and 800 mA rating align directly with the output stage of small synchronous Buck converters delivering a few hundred milliamps, such as 5 V to 3.3 V or 3.3 V to 1.8 V point-of-load rails. Placed between the switch node and the output capacitor bank, it smooths the square-wave switch-node current into continuous DC while the output capacitor sets ripple voltage. Its 117 mOhm maximum DCR keeps conduction loss low: estimated at roughly 75 mW at full 800 mA load, a modest penalty for compact 1210 real estate. Because the part is unshielded, position it away from feedback traces and verify that switch-node flux coupling does not disturb sensitive nodes in compact layouts.
Recommended
DC-DC Input Choke / Pi Filter
Upstream of a switching regulator, the LQH32CN1R0M23L works with input capacitors to form a pi (CLC) filter that attenuates switching ripple reflected back onto a shared supply rail. The 1 uH value with 117 mOhm DCR introduces minimal DC voltage drop - estimated under 100 mV at the full 800 mA rating - while presenting rising impedance to switching-frequency harmonics. In battery-powered and USB-powered devices, this suppresses conducted noise that would otherwise reach radios or audio circuitry sharing the rail. Because the drum core is unshielded, keep the choke's flux path away from neighboring magnetics in dense multi-rail boards, and respect the 800 mA rating when several regulator input currents sum through a single choke.
Recommended
LED Driver Current Smoothing
In low-power constant-current LED drivers, the LQH32CN1R0M23L smooths the switched current through the LED string, reducing visible flicker and conducted emissions. Its 1 uH inductance and 800 mA rating cover indicator and small-illumination LEDs operating in the several-hundred-milliamp class. The 117 mOhm DCR wastes little power: estimated dissipation is only tens of milliwatts at typical drive currents, preserving luminaire efficiency. Since the inductor is wirewound with an open core, its inductance is stable under the repetitive pulse currents typical of PWM-dimmed drivers, but designers should confirm peak (saturation) behavior from the Murata datasheet when driver peak currents exceed the DC rating. Place the inductor close to the driver switch node to minimize radiating loop area.
Recommended
LC Resonant and General Filter Networks
With 1 uH nominal inductance, the LQH32CN1R0M23L suits general-purpose LC low-pass, high-pass, and band-formation networks in consumer and industrial boards - for example, forming a cutoff near tens-to-hundreds of kilohertz with microfarad-range capacitors. The +/-20% M-code tolerance must be budgeted in filter corner calculations, so this part targets power and decoupling filters rather than precision tuned circuits; high-Q RF matching networks should instead use tight-tolerance RF inductors. The wirewound drum construction gives predictable inductance below self-resonance, and the 117 mOhm DCR sets the Q of power filters - acceptable for supply-rail filtering, where damping is often desirable. Verify the test-frequency-dependent inductance curve in the Murata datasheet for frequencies above typical converter ranges.
Recommended
IoT and Wireless Module Power Conditioning
Wireless modules such as Wi-Fi, Bluetooth, and sub-GHz radios draw burst currents that stress shared supplies; the LQH32CN1R0M23L decouples the module supply rail from board-level noise and confines switching ripple from its own Buck regulator. Its 800 mA rating covers the continuous and averaged transmit currents of many 2.4 GHz modules, and the 117 mOhm DCR limits supply sag during burst operation - estimated drop under 100 mV at rated current. The open drum core demands careful placement: keep at least a few millimeters of separation from the antenna feed, matching network, and RF inductors, or orient the part to minimize coupling. In compact IoT designs this commodity inductor provides adequate power-rail hygiene at a fraction of the cost of shielded types.
Recommended
Consumer Electronics Power Rails
Set-top boxes, televisions, appliances, and white-goods electronics use hundreds of small fixed inductors for auxiliary rail filtering, and the LQH32CN1R0M23L fits this volume role: 1 uH, 800 mA, 117 mOhm, RoHS compliant, in a compact 1210 SMD footprint compatible with reflow assembly at commodity pricing (about $0.045 at 1000 pieces as of 2026-09-06). It filters standby-power circuits, MCU power pins, and audio-amplifier supply rails where moderate ripple attenuation is needed and magnetic shielding is not critical. The unshielded construction permits side-by-side placement with other inductors in dense arrays if designers alternate orientations to cancel mutual coupling - a common mass-production layout technique. Its active lifecycle status and broad distributor availability support long production runs.
Recommended
Recommended Products Summary
Engineering reference data for LQH32CN1R0M23L β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LQH32CN1R2M23L | LQH32PN1R0NN0L |
|---|---|---|---|
| Package | 1210 (3.2 x 2.5 mm) nonstandard, SMD | 1210 (3.2 x 2.5 mm) nonstandard - same | 1210-class - same footprint, verify terminals |
| Brand | Murata Manufacturing | Murata Manufacturing | Murata Manufacturing |
| Inductance | 1 uH +/-20% | 1.2 uH +/-20% | 1 uH (verify tolerance on datasheet) |
| Shielding | Unshielded | Unshielded | Shielded |
| Construction | Drum core, wirewound | Drum core, wirewound | Wirewound, shielded structure |
| RoHS | Compliant | Compliant | Compliant |
Key Differentiators
- Exact 1 uH nominal value in LQH32CN family (vs LQH32CN1R2M23L)
- Lowest-cost unshielded construction (vs LQH32PN1R0NN0L)
- Low 117 mOhm max DCR (vs LQH32CN1R2M23L)
Design Notes
Respect the 800 mA rating: this is the rated (thermal) current, and drum-core wirewound parts also saturate when peak flux exceeds the core capability. Estimated: at the full 800 mA DC load, resistive dissipation in 117 mOhm is about 0.075 W, tolerable in a 1210 footprint, but ripple-current peaks add I_rms^2 x R heating on top. In Buck converters, verify that the sum of DC load and half the ripple-current peak stays below both the thermal and saturation limits, using the Murata datasheet curves rather than the headline rating alone.
Because the LQH32CN1R0M23L is unshielded, its magnetic field extends beyond the package. Keep sensitive feedback networks, crystal circuits, and RF matching components several millimeters away, and avoid paralleling it side-by-side with adjacent switching-inductors of the same orientation, where mutual coupling can crosstalk ripple between rails. Alternating orientations of neighboring inductors partially cancels coupling in dense consumer boards. Also copy the recommended land pattern from the Murata datasheet, since the package is listed as nonstandard rather than a generic JEDEC 1210 outline.
For low-ripple Buck output duty, the 117 mOhm maximum DCR is the dominant loss term. Estimated: in a 3.3 V output rail delivering 500 mA through this inductor, conduction loss is roughly 29 mW, or about 1.8% of the 1.65 W output power - acceptable for most consumer designs. At higher VIN-VOUT conversion ratios and higher ripple current, consider a lower-DCR or larger inductance sibling from the LQH32CN series to cut ripple current proportionally. Confirm typical DCR (below the 117 mOhm max) on the datasheet for efficiency modeling.
Compliance Information
RoHS compliant per DigiKey product listing. Murata lead-free SMD construction. REACH, halogen-free, and conflict-minerals status not stated in provided data - confirm on Murata official product page.
