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HP5-1200LB, HP5-1200LD

RoHS compliant

For more information and specification about the part.

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Count Unit price
1 $8.94
100 $7.60
250 $3.92
500 $3.36
1000 $2.81
2500 $2.71
5000 $2.59

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Electrical specifications at 25°C.

Part number 1 Inductance (µH) 2
(Tolerance: ±25%)
DCR max (mΩ) 3 Volt-time
product (V-µs) 4
Peak energy storage (µJ) 5 Isat (mA) 6 Irms (A) 7
HP5-1200L_ 77 45.0 62.8 Note 8 Note 8 2.3
  1. When ordering, please specify packaging code: e.g. HPH1-1400LD
  2. Inductance is per winding, measured at 100 kHz, 0.1 Vrms, 0 Adc.
  3. DCR is per winding, measured at 25°C on Cambridge Technology micro-ohmmeter or equivalent. For other operating temperatures,use this DCR at Temperature calculator.
  4. Volt-time product is for a single winding or multiple windings connected in parallel. To calculate volt-time product for windings connected in series, multiply the value specified in the table by the number of windings connected.
  5. Peak energy storage is for any combination of windings, assuming saturation current applied. See note 6 for definition of saturation current.
  6. Isat: DC current at which the inductance drops 30% typ from its value without current, based on current applied to all six windings connected in series. For applications where all windings are not connected in series, use the following equation to calculate Isat: Isat = Isat(table) × 6 ÷ number of windings in series.
  7. Irms: Current that causes a 40°C rise from 25°C ambient due to self heating, tested with continuous current flow through all windings connected in series. Application temperature rise will depend on the operating current, duty cycle, and winding connection.
  8. Part is designed exclusively for use as a forward converter transformer and was not tested for energy storage and saturation current.


  • L = RoHS compliant tin-silver over tin over nickel over phos bronze.
  •  = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
  • S = non-RoHS tin-lead (63/37). (Special order, added cost)


  • 13" reel, machine-ready  Details
    EIA-481 embossed plastic tape
  • B = Less than full reel
    In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter D instead.
RoHS compliant
Ambient temperature range:
−40°C to +85°C with Irms current
Storage temperature range:
Component: −40°C to +125°C
Packaging tape and reel or tray: −40°C to +80°C
Maximum part temperature:
+125°C (Ambient + temperature rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Physical characteristics



Tape and Reel specification

tapereel.gif (7350 bytes)
  Parts per reel   Reel dimensions (mm)   Tape dimensions (mm) Orientation 
  13" (330 mm)   A B C D E   W P Po P1 H T
HP5 / HPH5 175   330 100 13 50.4 44.4   44 28 4 2 12.0 0.4

General specification

Core Material:
10.6 – 11.5 g
175 per 13" reel


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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