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Close up of ST235RAG
Datasheet 3D Model

ST235RAG Series

Chip Inductors for Critical Applications

Our ST235RAG Series inductors feature excellent current handling capability – up to 2300 mA and very high SRF values – as high as 16 GHz.
  • Higher Q and lower DCR than other 0402 inductors.
  • Very high SRF values – as high as 16 GHz.
  • Excellent current handling capability – up to 2300 mA.
  • 52 inductance values from 1.0 to 220 nH.
  • Matte tin over nickel over silver-platinum glass frit terminations.

Looking for the commercial version of this part? See Coilcraft 0402HP Series
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Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (nH) 2 Tolerance (%) 900 MHz 1.7 GHz Q min 3 SRF min (GHz) 4 DCR max (Ω) 5 Imax (mA)
L typ Q typ 3 L typ Q typ 3
ST235RAG1N0JRZ 1.0 @ 250 MHz 5 0.97 46 0.99 72 18 @ 250 MHz > 5.00 0.030 700
ST235RAG2N0JRZ 2.0 @ 250 MHz 5 1.96 58 1.98 85 21 @ 250 MHz > 5.00 0.038 700
ST235RAG2N2JRZ 2.2 @ 250 MHz 5 2.17 60 2.17 86 24 @ 250 MHz > 5.00 0.038 700
ST235RAG2N4_RZ 2.4 @ 250 MHz 5,2 2.37 60 2.38 83 26 @ 250 MHz > 5.00 0.042 700
ST235RAG2N7_RZ 2.7 @ 250 MHz 5,2 26.6 62 2.68 85 18 @ 250 MHz > 5.00 0.090 510
ST235RAG3N3_RZ 3.3 @ 250 MHz 5,2 3.26 66 3.28 95 26 @ 250 MHz > 5.00 0.045 700
ST235RAG3N6_RZ 3.6 @ 250 MHz 5,2 3.56 65 3.58 94 31 @ 250 MHz > 5.00 0.045 700
ST235RAG3N9_RZ 3.9 @ 250 MHz 5,2 3.87 64 3.91 98 31 @ 250 MHz > 5.00 0.045 700
ST235RAG4N3_RZ 4.3 @ 250 MHz 5,2 4.26 63 4.33 90 25 @ 250 MHz > 5.00 0.055 700
ST235RAG4N7_RZ 4.7 @ 250 MHz 5,2 4.67 58 4.74 83 24 @ 250 MHz > 5.00 0.085 700
ST235RAG5N1_RZ 5.1 @ 250 MHz 5,2 5.07 54 5.16 76 18 @ 250 MHz > 5.00 0.125 510
ST235RAG5N6_RZ 5.6 @ 250 MHz 5,2 5.56 73 5.66 105 29 @ 250 MHz > 4.70 0.055 700
ST235RAG6N2_RZ 6.2 @ 250 MHz 5,2 6.18 73 6.25 100 27 @ 250 MHz > 4.20 0.055 700
ST235RAG6N8_RZ 6.8 @ 250 MHz 5,2 6.78 68 6.97 94 27 @ 250 MHz > 4.00 0.070 700
ST235RAG7N5_RZ 7.5 @ 250 MHz 5,2 7.49 60 7.77 82 23 @ 250 MHz 3.80 0.100 690
ST235RAG8N2_RZ 8.2 @ 250 MHz 5,2 8.1 68 8.4 95 27 @ 250 MHz 3.80 0.065 700
ST235RAG8N7_RZ 8.7 @ 250 MHz 5,2 8.73 66 9.04 95 26 @ 250 MHz 3.40 0.070 700
ST235RAG9N0_RZ 9.0 @ 250 MHz 5,2 8.99 67 9.21 92 30 @ 250 MHz 3.60 0.080 700
ST235RAG9N5_RZ 9.5 @ 250 MHz 5,2 9.52 64 9.97 90 25 @ 250 MHz 3.40 0.090 700
ST235RAG10N_RZ 10 @ 250 MHz 5,2 9.98 62 10.4 90 24 @ 250 MHz 3.20 0.110 700
ST235RAG11N_RZ 11 @ 250 MHz 5,2 11 68 11.6 98 27 @ 250 MHz 3.20 0.092 700
ST235RAG12N_RZ 12 @ 250 MHz 5,2 12 66 12.6 100 27 @ 250 MHz 3.00 0.100 700
ST235RAG13N_RZ 13 @ 250 MHz 5,2 13.1 62 13.9 82 23 @ 250 MHz 2.95 0.155 600
ST235RAG15N_RZ 15 @ 250 MHz 5,2 15.1 62 16 85 25 @ 250 MHz 2.70 0.115 700
ST235RAG16N_RZ 16 @ 250 MHz 5,2 16.2 57 17.3 77 26 @ 250 MHz 2.55 0.150 580
ST235RAG18N_RZ 18 @ 250 MHz 5,2 18.2 58 19.5 74 25 @ 250 MHz 2.40 0.125 650
ST235RAG19N_RZ 19 @ 250 MHz 5,2 19.2 61 20.7 88 25 @ 250 MHz 2.20 0.150 600
ST235RAG20N_RZ 20 @ 250 MHz 5,2 20.3 58 22 76 24 @ 250 MHz 2.15 0.185 520
ST235RAG21N_RZ 21 @ 250 MHz 5,2 21.3 48 23.2 62 24 @ 250 MHz 2.20 0.460 340
ST235RAG22N_RZ 22 @ 250 MHz 5,2 22.3 60 24.4 74 26 @ 250 MHz 1.80 0.165 570
ST235RAG23N_RZ 23 @ 250 MHz 5,2 23.3 60 25.5 77 25 @ 250 MHz 1.75 0.165 520
ST235RAG24N_RZ 24 @ 250 MHz 5,2 24.5 55 27.1 71 25 @ 250 MHz 1.75 0.210 480
ST235RAG25N_RZ 25 @ 250 MHz 5,2 25.5 57 28.3 73 24 @ 250 MHz 1.75 0.260 440
ST235RAG26N_RZ 26 @ 250 MHz 5,2 26.6 56 29.3 74 24 @ 250 MHz 1.75 0.290 440
ST235RAG27N_RZ 27 @ 250 MHz 5,2 27.3 62 29.5 86 24 @ 250 MHz 1.75 0.350 340
ST235RAG30N_RZ 30 @ 250 MHz 5,2 30.8 61 35 87 25 @ 250 MHz 1.75 0.350 340
ST235RAG33N_RZ 33 @ 250 MHz 5,2 34 61 38.3 80 25 @ 250 MHz 1.65 0.310 340
ST235RAG36N_RZ 36 @ 250 MHz 5,2 37.1 59 42.2 76 25 @ 250 MHz 1.65 0.390 320
ST235RAG37N_RZ 37 @ 250 MHz 5,2 38.2 57 44 72 25 @ 250 MHz 1.65 0.480 300
ST235RAG39N_RZ 39 @ 250 MHz 5,2 40.5 56 47 84 25 @ 250 MHz 1.65 0.420 320
ST235RAG40N_RZ 40 @ 250 MHz 5,2 41.3 56 47.4 75 24 @ 250 MHz 1.65 0.420 320
ST235RAG43N_RZ 43 @ 250 MHz 5,2 45 52 54.1 68 24 @ 250 MHz 1.60 0.520 290
ST235RAG47N_RZ 47 @ 250 MHz 5,2 49 48 58.9 62 24 @ 250 MHz 1.60 0.580 270
ST235RAG51N_RZ 51 @ 250 MHz 5,2 49.1 52 58.8 59 24 @ 250 MHz 1.65 0.700 240
ST235RAG56N_RZ 56 @ 250 MHz 5,2 58.8 56 72.2 64 23 @ 250 MHz 1.65 0.900 250
ST235RAG68N_RZ 68 @ 250 MHz 5,2 72.2 56 91.4 64 24 @ 250 MHz 1.60 1.000 230
ST235RAG82N_RZ 82 @ 250 MHz 5,2 89.7 52 - - 24 @ 250 MHz 1.60 1.100 200
ST235RAGR10_RZ 100 @ 250 MHz 5,2 - - - - 26 @ 250 MHz 1.40 1.200 180
ST235RAGR12JRZ 120 @ 250 MHz 5 - - - - 26 @ 250 MHz 1.40 1.200 170
ST235RAGR15JRZ 150 @ 100 MHz 5 - - - - 20 @ 100 MHz 1.40 2.000 160
ST235RAGR18JRZ 180 @ 100 MHz 5 - - - - 20 @ 100 MHz 1.40 2.100 150
ST235RAGR22JRZ 220 @ 100 MHz 5 - - - - 21 @ 100 MHz 1.40 3.100 150
Notes
  1. When ordering, specify tolerance, termination and screening codes: e.g. ST235RAG22NGRZ.
  2. Inductance measured at 250 MHz using a Coilcraft SMD-F fixture in an Agilent/HP 4286 impedance analyzer with Coilcraft-provided correlation pieces.
  3. Q typ measured using an Agilent/HP 4287A with an Agilent/HP 16197 test fixture.
  4. SRF measured using an Agilent/HP 8753ES network analyzer or equivalent and a Coilcraft CCF1232 test fixture.
  5. DCR measured on a micro-ohmmeter and a Coilcraft CCF1010 test fixture.

Tolerance:

  • 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.
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 L vs Frequency

Typical Q vs Frequency

Typical Q vs Frequency

Physical characteristics

dimension-(1).PNG

General specification

Core Material:
Ceramic
Weight:
0.65 – 1.3 mg
Packaging:
2000 per 7″ reel Paper tape: 8 mm wide, 0.66 mm thick, 2 mm pocket spacing.
Temperature coefficient of inductance:
+25 to +125 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.