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Electrical specifications at 25°C. Measurements are referenced to 50 Ohms.

Part number 1 L min per winding (µH) 2 DCR max (mΩ) 3 Imp. ratio
pri:sec 4
rating (mA)
loss (db)
DC imbalance 5 Bandwidth (MHz) Isolation
Voltage (Vrms)
Pri Sec Pri Sec
AE458RFW04C1SZ 9.0 36 60 120 1 : 4 250 1 30.0 0.25 800 300 C
  1. When ordering, please specify screening code: e.g. AE458RFW04C1SZ.
  2. Inductance measured at 100 kHz, 0.1 V, 0 Adc on an Agilent/ HP 4192 or equivalent.
  3. DCR measured on a micro-ohmmeter.
  4. Impedance ratio is for the full primary winding to the full secondary winding.
  5. DC imbalance is the maximum difference in current measured at pins 4 and 6 with the source at pin 5. Inductance drop is 15% at maximum imbalance.


Z = Unscreened
H = Group A screening per Coilcraft CP-SA-10001
2 = EEE-INST-002 level 2
3 = EEE-INST-002 level 3
4 = MIL-STD-981 Class B
5 = MIL-STD-981 Class S
F = Screening per ESCC 3201
All screening performed to the document’s latest revision Custom screening also available
Note: Screening T and U have been replaced with more detailed codes 4, 5, and 1, 2, 3, respectively. Codes  T and U can still be used, if necessary.
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –55°C to +95°C
Tape and reel packaging: –55°C to +80°C
Maximum part temperature:
+95°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Attenuation vs Frequency



Physical characteristics


General specification

Core Material:
750/7′′ reel; Plastic tape: 12 mm wide, 0.3 mm thick, 8 mm pocket spacing, 2.9 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.