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Introduction
Specifications
Environmental
Performance curves
Schematics
Physical characteristics
Tape & Reel
Soldering/Washing

3D Model Datasheet

1210uT Series

Dual Inductors for A²B® Audio Bus

Automotive Audio Bus (A²B^®) by Analog Devices transmits audio and control data in vehicles, reducing wiring complexity and improving sound quality. Our 1210uT inductors filter high-frequency noise and ensure balanced power injection in A²B^® systems. They combine two inductors into a single package, offering higher current capability and matching the impedance performance of two single inductors on the market.

Optimized for Analog Devices’ A²B® audio bus, where low imbalance minimizes mode conversion in balanced power injection applications and a coupling factor of less than 10% is required
1210-sized dual Inductor with tightly controlled balanced inductance, within a maximum 10% imbalance
AEC-Q200 qualified

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Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (µH) 2 (Tolerance: ±20%)	Coupling coefficient (max)	DCR max (Ω) 3	SRF typ (MHz)	Isolation Voltage (Vrms)	Isat (A) 4				Irms (A) 5
Part number 1	Inductance (µH) 2 (Tolerance: ±20%)	Coupling coefficient (max)	DCR max (Ω) 3	SRF typ (MHz)	Isolation Voltage (Vrms)	25°C	85°C	105°C	125°C	25°C	85°C	125°C
1210uT-332MRC	3.3	0.1	0.285	70	250	1.5	1.2	0.90	0.73	0.77	0.69	0.40
1210uT-103MRC	10	0.1	0.450	35	250	0.85	0.59	0.46	0.26	0.65	0.58	0.34

Notes

When ordering, please specify termination and packaging codes: e.g. 1210uT-103MRC
Inductance measured per winding at 100 kHz, 0.1 V, 0 Adc.
DCR is per winding, measured on a micro-ohmeter.
Isat: DC current at the specified ambient temperature that causes a 30% inductance drop from its value without current.
Irms: Current applied to both windings at the same time causes a 40C rise from the specified 25°C and 85°C ambient temperatures, and a 15°C rise at 125°C ambient temperature. This information is for reference only and does not represent absolute maximum ratings.

Termination:

R = RoHS compliant matte tin over nickel over silver-platinum-glass frit.
Q = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
P = non-RoHS tin-lead (63/37). (Special order, added cost

Packaging:

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (600 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
D = 13″ machine-ready reel. EIA-481 embossed plastic tape (2200 parts per full reel). Factory order only, not stocked.

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

−40°C to +125°C with (40°C) Irms current

Storage temperature range:

Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C

Maximum part temperature:

+140°C (Ambient + temperature rise)

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Performance curves

Impedance vs Frequency

L vs Current vs Temperature

Schematics

Physical characteristics

Tape and Reel specification

Parts per reel		Reel dimensions (mm)					Tape dimensions (mm)						Orientation
7" (178 mm)	13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
750	3500*	178/330	60/100	13	18,4	12,4	12	8	4	2	2,67	0,23

* Special order

General specification

Core Material:

Ferrite

Weight:

75 − 95 mg

Packaging:

750/7″ reel; 3000/13″ reel; Plastic tape: 12 mm wide, 0.23 mm thick, 8 mm pocket spacing, 2.67 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

1210uT Series

Dual Inductors for A²B® Audio Bus