Datasheet 3D Model

ML520RFA Series

High Reliability Wideband Transformers

ML520RFA Series offers 250 mA max current rating.

Small wideband transformer: 7.2 × 6.43 × 4.45 mm high.
300 V interwinding isolation, 1/4 Watt RF input power.
Tin-silver-copper over tin over nickel over phos bronze terminations.

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Specifications

Electrical specifications at 25°C.

Part number 1	L min per winding (µH) 2		DCR max (mΩ) 3		Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic
Part number 1	Pri	Sec	Pri	Sec	Imp. ratio pri:sec 4	Current rating (mA)	Insertion loss (db)	Bandwidth (MHz)	Isolation Voltage (Vrms)	Schematic
ML520RFA01A1LZ	60	60	130	130	1 : 1	250	0.25	0.045 — 365	300	1
ML520RFA01B1LZ	60	60	130	130	1 : 1	250	0.25	0.045 — 365	300	2
ML520RFA02B1LZ	60	140	130	180	1 : 2	250	0.25	0.045 — 495	300	2
ML520RFA03B1LZ	40	140	120	180	1 : 3	250	0.35	0.075 — 425	300	2
ML520RFA04B1LZ	25	100	90.0	160	1 : 4	250	0.6	0.12 — 440	300	2
ML520RFA08B1LZ	25	180	90.0	180	1 : 8	250	0.6	0.105 — 300	300	2
ML520RFA09B1LZ	40	420	120	250	1 : 9	250	0.3	0.075 — 200	300	2
ML520RFA16B1LZ	25	420	90.0	250	1 : 16	250	0.6	0.105 — 135	300	2

Notes

When ordering, please specify testing code: e.g. ML520RFA16B1LZ.
Inductance measured at 100 kHz, 0.1 V, 0 Adc on an Voltech AT3600 or equivalent.
DCR measured on a Voltech AT3600 or equivalent.
Impedance ratio is for the full primary winding to the full secondary winding.

Testing:

Z = Unscreened
H = Group A screening per Coilcraft CP-SA-10001
All screening performed to the document’s latest revision
Custom screening also available

Environmental

Ambient temperature range:

–55°C to +125°C

Storage temperature range:

Component: –55°C to +125°C
Tape and reel packaging: –55°C to +80°C

Maximum part temperature:

+125°C (ambient + temp rise)

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations