Datasheet
3D Model
ST235RAR Series
High-Reliability Chip Inductors
ST235RAR Series features ferrite construction for high current handling.
- Higher inductance values than other 0402 inductors.
- 25 inductance values from 20 nH to 3.3 μH.
- Equally effective on-board or modular.
- Can also be used for ground-to-ground isolation.
- Matte tin over nickel over silver-platinum-glass frit terminations.
Specifications
| Part number 1 |
Inductance (nH)
2
(Tolerance: ±5%) |
Impedance typ (Ω) | SRF min (MHz) 3 | DCR max (Ω) 4 | Imax (mA) 5 | |
|---|---|---|---|---|---|---|
| 900 MHz | 1.7 GHz | |||||
| ST235RAR200JRZ | 20 | 90.0 | 150 | 2500 | 0.049 | 700 |
| ST235RAR360JRZ | 36 | 150 | 250 | 2040 | 0.055 | 700 |
| ST235RAR560JRZ | 56 | 250 | 480 | 1870 | 0.061 | 650 |
| ST235RAR770JRZ | 77 | 350 | 580 | 1740 | 0.072 | 590 |
| ST235RAR900JRZ | 90 | 400 | 600 | 1950 | 0.079 | 490 |
| ST235RAR101JRZ | 105 | 530 | 1000 | 1410 | 0.104 | 490 |
| ST235RAR121JRZ | 120 | 515 | 900 | 1700 | 0.090 | 520 |
| ST235RAR141JRZ | 140 | 650 | 1075 | 1230 | 0.141 | 420 |
| ST235RAR151JRZ | 150 | 700 | 1170 | 1530 | 0.130 | 440 |
| ST235RAR181JRZ | 180 | 850 | 1460 | 1430 | 0.172 | 380 |
| ST235RAR221JRZ | 220 | 1100 | 2050 | 1320 | 0.240 | 320 |
| ST235RAR271JRZ | 270 | 1300 | 2150 | 1260 | 0.265 | 310 |
| ST235RAR301JRZ | 300 | 1725 | 2630 | 1190 | 0.340 | 270 |
| ST235RAR331JRZ | 330 | 2100 | 2750 | 1140 | 0.435 | 240 |
| ST235RAR361JRZ | 360 | 2150 | 3100 | 1020 | 0.475 | 230 |
| ST235RAR421JRZ | 420 | 2175 | 3350 | 935 | 0.510 | 220 |
| ST235RAR471JRZ | 470 | 2550 | 3670 | 910 | 0.670 | 190 |
| ST235RAR531JRZ | 530 | 3950 | 3050 | 850 | 0.715 | 190 |
| ST235RAR591JRZ | 590 | 4770 | 3090 | 810 | 0.780 | 180 |
| ST235RAR701JRZ | 700 | 5750 | 1830 | 510 | 1.300 | 150 |
| ST235RAR771JRZ | 770 | 4900 | 1800 | 500 | 1.350 | 140 |
| ST235RAR901JRZ | 900 | 7130 | 4470 | 645 | 1.500 | 130 |
| ST235RAR102JRZ | 1000 | 280 | 180 | 200 | 1.050 | 150 |
| ST235RAR222JRZ | 2200 | 200 | 120 | 105 | 1.800 | 120 |
| ST235RAR332JRZ | 3300 | 160 | 80.0 | 68 | 2.200 | 110 |
Notes
- When ordering, please specify termination and screening codes: e.g. ST235RAR332JRZ.
- Inductance measured at 7.9 MHz using a Coilcraft SMD-F test fixture and Coilcraft-provided correlation pieces with an Agilent/HP 4286 impedance analyzer.
- SRF measured using Agilent/HP 8753D network analyzer and Coilcraft SMD -D test fixture.
- DCR measured on Cambridge Technology micro-ohmmeter and a Coilcraft CCF858 test fixture.
- Current that causes a 15°C temperature rise from 125°C ambient. Because of their open construction, these parts will not saturate.
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)
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 Irms current.
Storage temperature range:
Component: –55°C to +140°C.
Tape and reel packaging: –40°C to +80°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):
Performance curves
L vs Frequency
Z vs Frequency
Z vs Frequency
Physical characteristics
| A max | B max | C max | D | E | F | G | H | |
|---|---|---|---|---|---|---|---|---|
| 0.044 | 0.026 | 0.026 | 0.018 | 0.008 | 0.014 | 0.025 | 0.026 | inches |
| 1,11 | 0,66 | 0,66 | 0,46 | 0,20 | 0,36 | 0,635 | 0,66 | mm |
General specification
Core Material:
Ferrite
Weight:
0.7 – 1.3 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 +150 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.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash.
See Doc787_PCB_Washing.pdf.
See Doc787_PCB_Washing.pdf.