Site Settings

Warehouses
Language settings
Currency settings
Parametric Search
Datasheet Index
Login
Products
Products
Ask a Question View FAQs
Power
RF
Transformers
EMI
Design Support Tools
Use our suite of tools to help select, analyze and compare inductors
See all tools
Parametric Search
View our list of inductors and filter results based on your exact parameters
Explore
Datasheets
Looking for a datasheet? Search by product and download a PDF
See the list
Design Tools
Applications
Applications
Ask a Question View FAQs
Resources
Resources
Ask a Question View FAQs
Product Documentation
Handling & Processing
Models & Layout Tools
Education
General
Video Library
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors
FREE Samples
Get free samples quickly - most orders ship the same day!
Order Now
Datasheets
Looking for a datasheet? Search by product and download a PDF.
See the list
Student Support
Learn more about magnetics, request free samples or ask our engineers a question.
Get Support
Quality
Quality
Ask a Question View FAQs
Quality Certification
Material Certification
Safety Certification
Reliability
Handling / Processing
About
About
Ask a Question View FAQs
About
Careers
Locations
Resources
Careers
Contact
Price & Availability
Close up of C1591-AL_
Datasheet 3D Models

C1591-AL

C1591-ALD

RoHS compliant

For more information and specification about the part.

Go to series
Buy Now:
Count Unit price
1 $3.08
350 $2.64
700 $2.31
1400 $1.79
2800 $1.54
5000 $1.41

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with Texas Instruments LM5070

Input Voltage Output 1 Power Fsw
Sec Bias
36 V — 72 V 5 V , 0.6 A 12 V , 0.02 A 3 W 250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2
(Hover for schematics)
Inductance
at 0A (µH) 3
(Tolerance: ±10%) 		Inductance
min at   0.3 A (µH) 		DCR max (Ω) 4 Leakage
Inductance
max (µH) 5 		Turns Ratio 6 Isolation
Voltage (Vrms) 7
Pri Sec Bias Pri : Sec : Bias
C1591-AL_ 310 279 1.020 0.118 2.010 4.5 1 : 0.28 : 0.7 1500
Notes
  1. Output of the secondary is with the windings connected in parallel. Bias winding output is 12 V, 20 mA.
  2. When ordering, please specify packaging code: e.g. C1592-ALD
  3. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc.
  4. DCR for the secondary is per winding.
  5. Leakage inductance measured between pins 3 and 4 with all other pins shorted.
  6. Turns ratio is with the secondary windings connected in parallel.
  7. 1500 Vrms isolation from primary and bias to secondary.

Termination:

  • RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Packaging:

  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (350 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D. 
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +85°C
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
See FIT/MTBF Calculations

Schematics

lm5070_ep7s.gif
Secondary windings to be connected in parallel on PC board

Physical characteristics

lm5070_ep7d.gif

Tape and Reel specification

tapereel_pl.gif

 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_f.gif
350 330 100 13 38,4 32,4 32 20 4 2 9,2 0,42

General specification

Core Material:
Ferrite
Weight:
2.05 g
Packaging:
350 per 13″ reel Plastic tape: 32 mm wide, 0.42 mm thick, 20 mm pocket spacing, 9.16 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.
PCB Washing:
Tested with pure water or alcohol only. More info.

Related products

C1590-AL

PoE transformer, for NSC LM5070, 3.3V, SMT, RoHS

C1592-AL

PoE transformer, for NSC LM5070, 12V, SMT, RoHS

Related product series

A9967-AL Surface Mount

AA1030-AL

C1023 PoE Transformer

C1048 PoE Transformer

C1099 Flyback Transformer

C1154 Flyback Transformer

C1173 Flyback Transformer

C1453 Flyback Transformer

SMT PoE Transformers

7 Watt PoE Transformers

D1766-AL PoE Transformer

DA2062-AL PoE Transformer

DA2257-AL PoE Transformer

DA2362-AL PoE Transformer

Flyback Transformer

DA2420-AL and DA2421-AL PoE Transformers

ETH1-230 High Power

ETH1-460 PoE

FA2519-AL PoE Transformer

Midspan PoE Plus Magnetics

FA2636 Flyback Transformer

FA267x and FA2732 PoE Transformers

Flyback Transformers

FA2706 Flyback Transformer

SMT Flyback Transformers

GA3271-AL Flyback Transformer

GA3429-BL Flyback Transformer

GA3568, HA3809 Flyback Transformers

Flyback Transformer

Flyback Transformers

HA380x Flyback Transformer

HA3905 Flyback Transformer

High Power PoE Plus

JA4456-DL Flyback Transformers

PA6582-AL Flyback Transformer

120 W PoE SMT Planar Transformers

POE300 Flyback Transformers

POE600F 60 W PoE Transformers

Miniature Flyback Transformers

Flyback Transformers

High Power Flyback Transformers

POExxP Flyback Transformers

Flyback & Forward Transformers

POExxQ High Power Flyback Transformers

High Power Transformers

WA8704-ALD

ZA9609-AE Active Clamp Forward Topology