Datasheet 3D Model

ST336RAM Series

Chip Inductors for Critical Applications

ST336RAM Series features ferrite construction for high current handling.

Higher inductance values than ceramic 0805 inductors.
Heavy gauge wire for low DCR.
Matte tin over nickel over silver-platinum-glass frit terminations.

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Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (µH) 2 (Tolerance: ±5%)	Impedance typ (Ω)	Q min 3	SRF min (MHz) 4	DCR max (Ω) 5	Imax (mA)	Color code
Part number 1	Inductance (µH) 2 (Tolerance: ±5%)	Impedance typ (Ω)	Q min 3	SRF min (MHz) 4	DCR max (Ω) 5	Imax (mA)	Color code
ST336RAM111JRZ	0.11 @ 7.9 MHz	370 @ 500 MHz	14 @ 7.9 MHz	1000	0.05	700	Brown
ST336RAM681JRZ	0.68 @ 7.9 MHz	430 @ 100 MHz	15 @ 7.9 MHz	340	0.30	410	Orange
ST336RAM102JRZ	1.0 @ 7.9 MHz	670 @ 100 MHz	13 @ 7.9 MHz	280	0.39	360	Yellow
ST336RAM122JRZ	1.2 @ 7.9 MHz	860 @ 100 MHz	15 @ 7.9 MHz	300	0.64	260	Brown
ST336RAM152JRZ	1.5 @ 7.9 MHz	1000 @ 100 MHz	16 @ 7.9 MHz	225	0.74	250	Green
ST336RAM182JRZ	1.8 @ 7.9 MHz	1360 @ 100 MHz	16 @ 7.9 MHz	240	0.98	210	Blue
ST336RAM222JRZ	2.2 @ 7.9 MHz	840 @ 50.0 MHz	15 @ 7.9 MHz	90	0.98	190	Brown
ST336RAM272JRZ	2.7 @ 7.9 MHz	1050 @ 50.0 MHz	15 @ 7.9 MHz	80	1.16	190	Violet
ST336RAM332JRZ	3.3 @ 7.9 MHz	1670 @ 50.0 MHz	15 @ 7.9 MHz	65	1.20	190	Gray
ST336RAM472JRZ	4.7 @ 7.9 MHz	950 @ 25.0 MHz	14 @ 7.9 MHz	40	1.50	170	Black
ST336RAM682JRZ	6.8 @ 7.9 MHz	450 @ 10.0 MHz	14 @ 7.9 MHz	28	1.90	150	Brown
ST336RAM103JRZ	10 @ 2.5 MHz	740 @ 10.0 MHz	14 @ 2.5 MHz	18	2.20	130	Red
ST336RAM153JRZ	15 @ 2.5 MHz	1300 @ 10.0 MHz	13 @ 2.5 MHz	15	4.25	90	Yellow
ST336RAM223JRZ	22 @ 2.5 MHz	1620 @ 10.0 MHz	13 @ 2.5 MHz	15	6.70	75	Green

Notes

When ordering, please specify termination and screening codes: e.g. ST336RAM223JRZ.
Inductance measured at 0.1 Vrms, using Coilcraft SMD-A fixture in Agilent/HP 4286A impedance analyzer or equivalent with Coilcraft-provided correlation pieces.
Q measured on Agilent/HP 4291A with Agilent/HP 16197A test fixture or equivalents.
SRF measured using Agilent/HP 8753ES network analyzer or equivalent with Coilcraft SMD-D test fixture.
DCR measured on a Keithley 580 Micro-ohmmeter or equivalent with a Coilcraft CCF858 test fixture.

Termination:

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

Screening:

Z = Unscreened
H = Coilcraft CP-SA-10001 Group A
Screening performed to the document’s latest revision.
Lot qualification (Group B) available.
Custom testing also available.
Country of origin restrictions available; prefix options G or F.

Environmental

Ambient temperature range:

–40°C to +85°C with Imax current.

Storage temperature range:

Component: –55°C to +100°C.
Packaging: –55°C to +80°C.

Maximum part temperature:

+100°C (ambient + temp rise).

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

See FIT/MTBF Calculations

Performance curves

L vs Frequency

Q vs Frequency

Impedance vs Frequency

Physical characteristics

A max	B max	C max	D ref	E	F	G	H	I	J
0.090	0.068	0.060	0.020	0.050	0.016	0.040	0.070	0.040	0.030	inches
2,29	1,73	1,52	0,51	1,27	0,41	1,02	1,78	1,02	0,76	mm

Note: Dimensions are before optional solder application. For maximum overall dimensions including solder, add 0.0025 in / 0,064 mm to B and 0.006 in / 0,15 mm to A and C.

General specification

Core Material:

Ferrite

Weight:

16.7– 18.0 mg

Packaging:

2000/7″ reel; Plastic tape: 8 mm wide, 0.23 mm thick, 4 mm pocket spacing, 1.6 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.