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CST4835-125E

RoHS compliant halogen free AEC-Q flag

For more information and specification about the part.

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Count Unit price
1 $1.72
250 $1.37
500 $1.19
1000 $1.04
2500 $0.89
5000 $0.81

For high volume or non-stock items, request a quote.

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Specifications

Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
Inductance
min (µH) 2
DCR max (Ω) Turns Ratio Volt-time
product (V-µs) 3
Frequency (kHz) Current (A) 4 Terminating
resistance RT (Ω) 5
Isolation
Voltage (Vrms) 6
Pri Sec Pri : Sec
CST4835-125E_ 1280 0.0030 13.0 1 : 125 37.5 13 1000 7.0 17.9 500
Notes
  1. When ordering, please specify packaging code: e.g. CST4835-150EC
  2. Inductance measured between secondary pins at 100 kHz, 0.1 Vrms, 0 Adc.
  3. Maximum volt-time product is for the secondary, based on 2000 Gauss.
  4. Primary current of 7 A causes approximately 25°C temperature rise above 25°C ambient. Higher current causes a greater temperature rise (see Temperature Rise vs Current curve).
  5. Terminating resistor value is based on 1 Volt output with 7 Amps flowing through the primary. Varying terminating resistance increases or decreases output Voltage/Ampere according to the following equation:
    RT (Ohms) = Vout × Nsec / Iin.
  6. 500 Vrms, one minute isolation (hipot) winding to winding.

Termination:

  • RoHS compliant tin-silver over tin over nickel over copper (pins 2 – 1); RoHS compliant tin over nickel over copper (pins 4 – 3).

Packaging:

  • C = 7" machine-ready reel
    EIA−481 embossed plastic tape (500 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge)
  • B = Less than full reel
    In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.
  • D = 13" machine-ready reel
    EIA−481 embossed plastic tape (2200 parts per full reel).
Environmental
Environmental:
RoHS compliant , halogen free
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +165°C.
Tape and reel Packaging: –40°C to +80°C
Maximum part temperature:
+165°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
10.06 per billion hours / 9.940E+07 hours, calculated per Telcordia SR-332

Performance curves

Temperature vs Current

Schematics

cst4835schematic.gif

Physical characteristics

cst4835dimensions.gif
dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif

 
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 cst4835orientation.gif
500 2200* 178/330 60/100 13 18,4 12,4 12 8 4 2 6,6 0,35

General specification

Core Material:
Ferrite
Weight:
115 – 122 mg
Packaging:
500/7″ reel; 2200/13″ reel; Plastic tape: 12 mm wide, 0.35 mm thick, 8 mm pocket spacing, 3.6 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More Info.

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