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Close up of MS612PND
Datasheet 3D Model

MS612PND Series

High-Reliability Coupled Inductors

The MS612PND series of coupled inductors was designed for high temperature applications – up to 155°C. Tin-lead (Sn-Pb) terminations are used for the best possible board adhesion.
The excellent coupling coefficient (k ≥ 0.98) makes it ideal for use in SEPIC applications. In SEPIC topologies, the required inductance for each winding in a coupled inductor is half the value needed for two separate inductors, allowing selection of a part with lower DCR and higher current handling.

These inductors provide high inductance, high efficiency, excellent current handling and 500 V isolation in a very rugged part. They are well suited for use as VRM inductors in high-current DC-DC and VRM/VRD controllers.

They can also be used as two single inductors connected in series or parallel, as a common mode choke or as a 1:1 transformer.

Looking for the commercial version of this part? See Coilcraft MSD1278T Series
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Specifications

Electrical specifications at 25°C.

For Flyback Applications

Part number 1 Inductance (µH) 2 Tolerance (%) DCR max (Ω) 3 Isolation
Voltage (V) 4 		Leakage
Inductance (µH)
MS612PND472MSZ 4.7 20 0.040 500 0.22
MS612PND562MSZ 5.6 20 0.046 500 0.23
MS612PND682MSZ 6.8 20 0.048 500 0.22
MS612PND822MSZ 8.2 20 0.055 500 0.34
MS612PND103MSZ 10.0 20 0.058 500 0.34
MS612PND123MSZ 12.0 20 0.062 500 0.36
MS612PND153MSZ 15.0 20 0.072 500 0.41
MS612PND183MSZ 18.0 20 0.080 500 0.37
MS612PND223MSZ 22.0 20 0.096 500 0.41
MS612PND273MSZ 27.0 20 0.12 500 0.43
MS612PND333MSZ 33.0 20 0.15 500 0.56
MS612PND393MSZ 39.0 20 0.16 500 0.64
MS612PND473MSZ 47.0 20 0.18 500 0.7
MS612PND563MSZ 56.0 20 0.19 500 0.76
MS612PND683MSZ 68.0 20 0.21 500 0.88
MS612PND823MSZ 82.0 20 0.28 500 0.85
MS612PND104MSZ 100.0 20 0.30 500 0.9
MS612PND124KSZ 120.0 10 0.41 500 1.31
MS612PND154KSZ 150.0 10 0.46 500 1.46
MS612PND184KSZ 180.0 10 0.51 500 0.93
MS612PND224KSZ 220.0 10 0.69 500 1.54
MS612PND274KSZ 270.0 10 0.90 500 1.17
MS612PND334KSZ 330.0 10 1.0 500 4.14
MS612PND394KSZ 390.0 10 1.1 500 1.64
MS612PND474KSZ 470.0 10 1.5 500 1.25
MS612PND564KSZ 560.0 10 1.7 500 2.68
MS612PND684KSZ 680.0 10 2.3 500 2.11
MS612PND824KSZ 820.0 10 2.6 500 2.39
MS612PND105KSZ 1000.0 10 2.9 500 4.28

For SEPIC Applications

Part number 1 Inductance (µH) 2 Tolerance (%) DCR max (Ω) 3 SRF (MHz) 5 Coupling coefficient Leakage
Inductance (µH) 		Isat (A) 6 Irms (A)
Min Typ 10% drop 20% drop 30% drop both windings 7 one winding 8
MS612PND472MSZ 4.7 20 0.040 26.0 33.0 0.98 0.22 13.9 15.2 16.4 3.16 4.47
MS612PND562MSZ 5.6 20 0.046 24.0 30.0 0.98 0.23 13.4 14.9 15.7 2.87 4.06
MS612PND682MSZ 6.8 20 0.048 18.0 23.0 0.98 0.22 12.1 13.6 14.2 2.81 3.98
MS612PND822MSZ 8.2 20 0.055 16.0 20.0 0.98 0.34 10.3 11.5 12.2 2.76 3.90
MS612PND103MSZ 10 20 0.058 14.0 17.0 0.98 0.34 8.8 10.0 10.7 2.56 3.62
MS612PND123MSZ 12 20 0.062 12.0 15.0 0.98 0.36 8.2 9.2 9.7 2.48 3.50
MS612PND153MSZ 15 20 0.072 10.0 13.0 0.99 0.41 7.4 8.4 9.0 2.30 3.25
MS612PND183MSZ 18 20 0.080 9.6 12.0 0.99 0.37 6.5 7.4 7.9 2.18 3.08
MS612PND223MSZ 22 20 0.096 8.8 11.0 0.99 0.41 6.0 6.8 7.3 1.99 2.81
MS612PND273MSZ 27 20 0.12 8.0 10.0 0.99 0.43 5.8 6.6 7.0 1.78 2.52
MS612PND333MSZ 33 20 0.15 7.6 9.5 0.99 0.56 5.5 6.1 6.5 1.59 2.25
MS612PND393MSZ 39 20 0.16 6.8 8.5 0.99 0.64 4.7 5.3 5.6 1.54 2.18
MS612PND473MSZ 47 20 0.18 6.0 7.5 0.99 0.70 3.7 4.3 4.6 1.45 2.05
MS612PND563MSZ 56 20 0.19 5.6 7.0 0.99 0.76 3.6 4.2 4.5 1.41 2.00
MS612PND683MSZ 68 20 0.21 5.2 6.5 0.99 0.88 3.5 4.0 4.3 1.35 1.90
MS612PND823MSZ 82 20 0.28 4.0 5.0 0.99 0.85 3.3 3.7 4.0 1.16 1.65
MS612PND104MSZ 100 20 0.30 3.6 4.5 >0.99 0.90 2.8 3.2 3.5 1.13 1.59
MS612PND124KSZ 120 10 0.41 3.4 4.3 0.99 1.3 2.6 2.9 3.2 0.96 1.36
MS612PND154KSZ 150 10 0.46 3.3 4.1 >0.99 1.5 2.2 2.5 2.7 0.91 1.29
MS612PND184KSZ 180 10 0.51 3.2 4.0 >0.99 0.93 2.1 2.4 2.6 0.86 1.22
MS612PND224KSZ 220 10 0.69 2.7 3.4 >0.99 1.5 1.9 2.2 2.3 0.74 1.05
MS612PND274KSZ 270 10 0.90 2.5 3.1 >0.99 1.2 1.7 1.9 2.1 0.65 0.92
MS612PND334KSZ 330 10 1.0 2.3 2.9 0.99 4.1 1.5 1.7 1.8 0.61 0.86
MS612PND394KSZ 390 10 1.1 2.2 2.7 >0.99 1.6 1.4 1.6 1.7 0.58 0.82
MS612PND474KSZ 470 10 1.5 1.8 2.2 >0.99 1.3 1.3 1.5 1.6 0.50 0.70
MS612PND564KSZ 560 10 1.7 1.6 2.0 >0.99 2.7 1.2 1.3 1.5 0.47 0.67
MS612PND684KSZ 680 10 2.3 1.4 1.7 >0.99 2.1 1.0 1.1 1.2 0.41 0.58
MS612PND824KSZ 820 10 2.6 1.1 1.4 >0.99 2.4 0.90 1.0 1.2 0.39 0.55
MS612PND105KSZ 1000 10 2.9 1.0 1.3 >0.99 4.3 0.85 0.95 1.1 0.37 0.52
Notes
  1. When ordering, please specify screening code: e.g. MS612PND105KSZ.
  2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value.
  3. DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value.
  4. Winding-to-winding and winding-to-core isolation 500 Vrms.
  5. SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
  6. DC current at 25°C that causes the specified inductance drop from its value without current. It is the sum of the current flowing in both windings.
  7. Equal current when applied to each winding simultaneously that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation.
  8. Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation.
Refer to Doc 639 “Selecting Coupled Inductors for SEPIC Applications.”

Screening:

  • Z = Unscreened
  • Y = Unscreened (SLDC Option A)
  • W = Unscreened (SLDC Option B)
  • H = Coilcraft CP-SA-10001 Group A
  • G= Coilcraft CP-SA-10001 Group A (SLDC Option A)
  • D = Coilcraft CP-SA-10001 Group A (SLDC Option B)
  • 1 = EEE-INST-002 (Family 1) Level 1
  • 2 = EEE-INST-002 (Family 1) Level 2
  • 3 = EEE-INST-002 (Family 1) Level 3
  • 4 = MIL-STD-981 (Family 04) Class B
  • 5 = MIL-STD-981 (Family 04) Class S
  • F = ESCC3201 (F4 operational life performed at 105°C)
  • Screening performed to the document’s latest revision.
  • Lot qualification (Group B) available.
  • Testing 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. Custom testing also available.
  • Country of origin restrictions available; prefix options G or F.
Environmental
Ambient temperature range:
–55°C to +105°C with Irms current.
Storage temperature range:
Component: –55C to +155°C.
Tape and reel packaging: –55°C to +80°C.
Maximum part temperature:
+155°C (ambient + temp rise).
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
See FIT/MTBF Calculations

Performance curves

Typical L vs Current

Typical L vs Current

Typical L vs Frequency

Typical L vs Frequency

Schematics

ms612pnd_schem.png

Physical characteristics

ms612pnd_dim.png

General specification

Core Material:
Ferrite
Weight:
3.8 g – 4.6 g
Packaging:
500/13′′ reel; Plastic tape: 24 mm wide, 0.4 mm thick, 16 mm pocket spacing, 8.1 mm pocket depth

Soldering/Washing

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.