3D Model Datasheet
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Electrical specifications at 25°C.

Part number 1 Inductance
min (mH) 2
DCR max (Ω) Turns Ratio Volt-time
product (V-µs) 3
Frequency (kHz) 4 Sensed current max (A) 5 Terminating
resistance RT (Ω) 6
Voltage (Vrms)
pri sec pri : sec
ST629TCB1020L_ 0.34 0.00036 0.18 1 : 20 50.8 10 >1000 47.0 0.50 1500
  1. When ordering, please specify screening code: e.g. ST629TCB1200LZ.
  2. Inductance measured between secondary pins 2 - 4 at 1 kHz, 0.1 Vrms, 0 Adc.
  3. Volt-time product is for the secondary, between pin 2 and 4.
  4. For specific questions regarding frequency range, please contact us at [email protected].
  5. Primary current of 47 A causes approximately 40°C temperature rise from 25°C ambient. Higher current causes a greater temperature rise (see Temperature Rise vs Current curve).
  6. Terminating resistance (RT) value is based on 1 Volt output with 40 Amps flowing through the primary. Varying terminating resistance increases or decreases output Voltage/Ampere according to the following equation: RT = Vout × Nsec/Iin.


  • L = Tin-silver over tin over nickel over phos bronze (pins 1-10); Matte tin over nickel over copper (pins 11-12)


  • Z = Unscreened
  • H = Coilcraft CP-SA-10001 Group A
    • Screening performed to the document’s latest revision.
    • Custom testing also available.
    • Country of origin restrictions available; prefix options G
Ambient temperature range:
–40°C to +125°C.
Storage temperature range:
Component: –55°C to +165°C.
Tape and reel Packaging: –55°C to +80°C.
Maximum part temperature:
+165°C (ambient + temp rise).
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Temperature Rise vs Current



Physical characteristics


General specification

Core Material:
4 – 4.25 g
300/13″ reel; Plastic tape: 32 mm wide, 0.5 mm thick, 20 mm pocket spacing, 10.6 mm pocket depth


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.