Datasheet

143-20J12L

Name: 143-20L
Brand: Coilcraft
SKU: 143-20L
Price: 0.93 USD
Availability: InStock

143-20J12L, 143-20L

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Count	Unit price
1	$4.44
100	$3.66
250	$2.57
500	$1.90
1000	$1.35
2500	$0.79
5000	$0.52

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

Core

Standard

Without core

. in stock, ready to ship today.

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Designer's Kit:

Kit	Values	Price
M302	98 (2 of each)	$60.00

Specifications

Electrical specifications at 25°C.

Unshielded

Part number 1	Color	Turns	Inductance (µH) 2				Test frequency (MHz)	Q min at L nom 3	SRF typ (MHz)	DCR (mΩ) 4
Part number 1	Color	Turns	No core nom	min 5	nom	max	Test frequency (MHz)	Q min at L nom 3	SRF typ (MHz)	DCR (mΩ) 4
143-20J12L	Black	20½	0.96	1.3	1.4	1.5	40.0	92	185	30.0

Notes

To order fixed inductance parts without cores, eliminate the “J08” or “J12”, e.g. 144-01.
Inductance and Q readings taken on Boonton 260-A Q meter with 16 AWG tinned copper 1/2" long soldered along leads and bent at 90° 1/4" down from stand offs.
All inductance values greater than 0.1 µH read at recommended Q meter frequency.
All inductance values below 0.1 µH calculated from readings taken at 50 MHz.
Q min measured at L nom at 40 MHz.
DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
L min measured with core halfway out top of form.

Termination:

Series 142 and 143 leads: Tin-silver over copper
Series 144 leads: Matte tin over copper
Shield can tabs: Tin-silver over nickel over brass

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

−40°C to +85°C

Storage temperature range:

Component: −40°C to +85°C
Packaging trays or tubes: −40°C to +80°C

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

See FIT/MTBF Calculations

Physical characteristics

Unshielded Styles

Shielded Styles

General specification

Core Material:

Carbonyl J Core length: 142 Series - 1/4"; 143, 144 Series - 3/8"

Weight:

142 series unshielded: 1.39 – 1.82 g, shielded: 1.64 – 2.16 g; 143 series unshielded: 1.75 – 2.40 g, shielded: 2.85 – 3.54 g; 144 series unshielded: 1.22 – 1.74 g, shielded: 2.35 – 2.91 g

Packaging:

Unshielded: 50 per tube
With shield can: 50 per tube

Soldering/Washing

Resistance to soldering heat:

Wave solder only. Recommended maximum board surface temperature of 168°C (334°F) for no more than three seconds. Pre-heating is recommended to minimize time over the solder nozzle.

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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Currency settings

143-20J12L

143-20J12L, 143-20L

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Specifications

Unshielded

Termination:

Physical characteristics

Unshielded Styles

Shielded Styles

General specification

Soldering/Washing

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