Datasheet 3D Model

ST235RAA Series

Chip Inductors for Critical Applications

Our ST235RAA Series chip inductors offer a maximum part temperature of +140°C.

This 0402 size chip inductor series shares all of the characteristics of Coilcraft’s other ceramic inductors: exceptionally high Q factors, especially at use frequencies; outstanding self-resonant frequency; tight inductance tolerance; and excellent batch-to-batch consistency.

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Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (nH) 2	Tolerance (%)	900 MHz		1.7 GHz		Q min @ 250 MHz 3	SRF min (GHz) 4	DCR max (Ω) 5	Imax (mA)
Part number 1	Inductance (nH) 2	Tolerance (%)	L typ	Q typ 3	L typ	Q typ 3	Q min @ 250 MHz 3	SRF min (GHz) 4	DCR max (Ω) 5	Imax (mA)
ST235RAA1N0JLZ	1.0	5	1.02	77	1.02	69	20	> 5.00	0.045	600
ST235RAA1N2JLZ	1.2	5	1.17	28	1.17	38	12	> 5.00	0.090	600
ST235RAA1N8JLZ	1.8	5	1.78	54	1.78	75	20	> 5.00	0.070	600
ST235RAA1N9JLZ	1.9	5	1.72	68	1.74	82	20	> 5.00	0.070	600
ST235RAA2N0_LZ	2.0	5,2	1.93	54	1.93	75	20	> 5.00	0.070	600
ST235RAA2N2_LZ	2.2	5,2	2.19	59	2.23	100	20	> 5.00	0.070	600
ST235RAA2N4_LZ	2.4	5,2	2.24	51	2.27	68	20	> 5.00	0.068	600
ST235RAA2N7_LZ	2.7	5,2	2.58	42	2.6	61	16	> 5.00	0.120	425
ST235RAA3N3_LZ	3.3	5,2,1	3.1	65	3.12	87	20	> 5.00	0.066	600
ST235RAA3N6_LZ	3.6	5,2,1	3.56	45	3.62	71	20	> 5.00	0.066	600
ST235RAA3N9_LZ	3.9	5,2,1	3.89	50	4.0	75	20	> 5.00	0.066	600
ST235RAA4N3_LZ	4.3	5,2,1	4.19	47	4.3	71	20	> 5.00	0.091	600
ST235RAA4N7_LZ	4.7	5,2,1	4.55	48	4.68	68	20	4.77	0.130	600
ST235RAA5N1_LZ	5.1	5,2,1	5.15	56	5.25	82	20	4.80	0.083	600
ST235RAA5N6_LZ	5.6	5,2,1	5.16	54	5.28	81	20	4.80	0.083	600
ST235RAA6N2_LZ	6.2	5,2,1	6.16	52	6.37	76	20	4.80	0.083	600
ST235RAA6N8_LZ	6.8	5,2,1	6.56	63	6.93	78	20	4.80	0.083	600
ST235RAA7N5_LZ	7.5	5,2,1	7.91	60	8.22	88	22	4.80	0.104	600
ST235RAA8N2_LZ	8.2	5,2,1	8.5	57	8.85	84	22	4.40	0.104	600
ST235RAA8N7_LZ	8.7	5,2,1	8.78	54	9.21	73	20	3.80	0.195	480
ST235RAA9N0_LZ	9.0	5,2,1	9.07	62	9.53	78	22	4.66	0.100	600
ST235RAA9N5_LZ	9.5	5,2,1	9.42	54	9.98	69	20	3.48	0.195	480
ST235RAA10N_LZ	10	5,2,1	9.8	50	10.1	67	21	3.68	0.195	480
ST235RAA11N_LZ	11	5,2,1	10.7	52	11.2	78	24	3.48	0.120	580
ST235RAA12N_LZ	12	5,2,1	11.9	53	12.7	71	24	3.60	0.120	580
ST235RAA13N_LZ	13	5,2,1	13.4	51	14.63	57	20	3.28	0.210	440
ST235RAA15N_LZ	15	5,2,1	14.6	55	15.5	77	22	3.10	0.172	500
ST235RAA16N_LZ	16	5,2,1	16.6	46	18.86	47	23	3.05	0.220	480
ST235RAA18N_LZ	18	5,2,1	18.3	57	20.28	62	24	2.68	0.230	420
ST235RAA19N_LZ	19	5,2,1	19.1	50	21.1	67	24	3.00	0.202	460
ST235RAA20N_LZ	20	5,2,1	20.7	52	23.66	53	24	2.90	0.250	400
ST235RAA22N_LZ	22	5,2,1	23.2	53	26.75	53	24	2.80	0.300	380
ST235RAA23N_LZ	23	5,2,1	23.8	49	26.9	64	24	2.72	0.300	400
ST235RAA24N_LZ	24	5,2,1	25.1	51	29.5	50	24	2.60	0.300	390
ST235RAA27N_LZ	27	5,2,1	28.7	49	33.5	63	24	2.48	0.298	380
ST235RAA30N_LZ	30	5,2,1	31.1	46	38.5	39	24	2.35	0.300	340
ST235RAA33N_LZ	33	5,2,1	34.9	31	41.74	32	20	2.30	0.300	340
ST235RAA36N_LZ	36	5,2,1	39.5	44	48.4	53	24	2.20	0.440	310
ST235RAA39N_LZ	39	5,2	41.7	47	50.23	45	24	2.10	0.550	200
ST235RAA40N_LZ	40	5,2,1	39	44	47.4	33	24	2.24	0.440	290
ST235RAA43N_LZ	43	5,2	45.8	46	61.55	34	22	2.03	0.810	100
ST235RAA47N_LZ	47	5,2	50	38	-	-	20	2.10	0.830	150
ST235RAA51N_LZ	51	5,2	56.6	40	-	-	19	1.75	0.820	100
ST235RAA56N_LZ	56	5,2	62.8	42	-	-	22	1.76	0.966	100
ST235RAA68N_LZ	68	5,2	78.2	36	-	-	22	1.62	1.120	100
ST235RAA82N_LZ	82	5,2	-	-	-	-	25	1.26	1.550	50
ST235RAAR10_LZ	100	5,2	-	-	-	-	25	1.16	2.000	50
ST235RAAR12_LZ	120	5,2	-	-	-	-	22	1.20	2.200	50

Notes

When ordering, specify tolerance, termination and screening codes: e.g. ST235RAA12NGRZ.
Inductance measured at 250 MHz using a Coilcraft SMD-F test fixture and Coilcraft-provided correlation pieces with an Agilent/HP 4286A impedance analyzer or equivalent.
For Q min: Q measured at 250 MHz using an Agilent/HP 4291A with an Agilent/ HP 16197A test fixture or equivalents.
For Q typ: Q measured using an Agilent/HP 4291A with an Agilent/HP 16197A test fixture or equivalents.
SRF measured using an Agilent/HP 8753ES network analyzer and a Coilcraft CCF1232 test fixture.
DCR measured on a Keithley 580 micro-ohmmeter and a Coilcraft CCF1010 test fixture.

Tolerance:

F = 1%
G = 2%
J = 5%

Termination:

R = Matte tin over nickel over silver-platinum glass frit.
A = Gold over nickel over moly-mag.
L = Silver-palladium-platinum glass frit.
P = Tin-lead (63/37) over 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.
C = Tin-lead (63/37) over gold over nickel over moly-mag.
F = Tin-silver-copper (95.5/4/0.5) over gold over nickel over moly-mag.
S = Tin-lead (63/37) over silver-platinum-glass frit.
T = Tin-silver-copper (95.5/4/0.5) over silver-platinum glass frit.

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 +125°C with Imax current.

Storage temperature range:

Component: –55°C to +140°C.
Tape and reel packaging: –55°C to +80°C.

Maximum part temperature:

+140°C (ambient + temp rise).

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

See FIT/MTBF Calculations

Performance curves

Typical L vs Frequency

Typical Q vs Frequency

Physical characteristics

General specification

Core Material:

Ceramic

Weight:

0.80 – 1.0 mg

Packaging:

2000 per 7″ reel Paper tape: 8 mm wide, 0.68 mm thick, 2 mm pocket spacing.

Temperature coefficient of inductance:

+25 to +155 ppm/°C.

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.