CenturaCores Custom Nanocrystalline Core RFQ Template
https://centuracores.com/resources/custom-nanocrystalline-core-rfq-template/
Companion guide: https://centuracores.com/articles/how-to-specify-custom-nanocrystalline-cores/

Buyer: ____________________  Date: __________  Rev: ____
Company: __________________  Contact / email: ____________________

1. FUNCTION
[ ] CMC/EMI  [ ] Metering CT  [ ] Protection CT  [ ] RCD  [ ] HF transformer  [ ] Other: ____
One-line duty: _______________________________________________

2. ELECTRICAL / MAGNETIC OPERATING POINT
Frequency: ____ Hz / kHz (range: ____ to ____)
Waveform: [ ] sine [ ] square [ ] PWM  Duty: ____
Form factor kw (info): ____ (e.g. 4.44 sine / 4.0 square)
Bpk or V.s: ____ T or ____ V.us   Margin for transient: ____%
Temp: ambient ____C  hotspot ____C
Max core loss: ____ W (or ____ W/kg) at B=____ T, f=____, T=____C
Ribbon thickness class: [ ] 20-25 um  [ ] <=18 um  [ ] other: ____

3. PERMEABILITY / AL (enforceable)
Target: ui or ue >= ____  OR  AL >= ____ nH/N2
Test: f=____, H=____ A/m (or B=____ mT), T=____C, fixture: ____
Loop / anneal: [ ] R-round  [ ] Z-square  [ ] F-flat (transverse, low Br, DC bias)
Br/Bs limits if any: ____
Note: R/Z/F is supplier shorthand. State remanence and bias needs explicitly.

4. APPLICATION EXTRAS
CMC: Iline=____ A; Zcm/IL table attached; max dI/surge=____ A
CT: class=____; burden=____ VA (meter + wiring); Is=____ A; ALF/Vk=____; Rf=____ kA
RCD: Idn=____ mA; bandwidth=____

5. GEOMETRY
Shape: [ ] toroid [ ] oval [ ] rect [ ] C-cut [ ] E [ ] other
Drawing No: ________  OD/ID/HT or A/B/C: ________
Gap (if cut): g=____ mm; faces: ____
Finish: [ ] bare [ ] epoxy [ ] case ______  Color/marking: ____
Stacking factor assumption for design: Kstack=____ (info only; typically 0.75-0.85)

6. ENVIRONMENT / MECHANICAL
Mounting: ____  Clamp limits: ____  Potting/PCB notes: ____
Packaging: export anti-vib / moisture barrier required: [ ] Y [ ] N

7. QUALITY
Reports required: dimensions, u/AL, loss, (CT excitation), FAI
Sampling: ____

8. COMMERCIAL
Qty: proto ____ / prod ____   Target lead time: ____
Ship to: ____

ATTACHMENTS
[ ] Dimensioned drawing (PDF)  [ ] IL/Zcm table  [ ] Excitation / burden notes  [ ] Other: ____

Submit with your drawing via https://centuracores.com/request-quote/
Or open the Core Designer: https://centuracores.com/tools/custom-transformer-core-designer/