Coilcraft Manufacturer Skill

Overview

Coilcraft is a leading manufacturer of magnetic components, specializing in:

Power Inductors - Shielded and unshielded designs for DC-DC converters
RF Inductors - High-Q chip inductors for RF/wireless applications
Transformers - Signal and power transformers
Common Mode Chokes - EMI suppression components

MPN Structure

Coilcraft MPNs follow this general structure:

[SERIES][SIZE][-][VALUE][TOLERANCE][PACKAGING]
   |       |     |    |       |         |
   |       |     |    |       |         +-- E=Embossed tape, B=Bulk
   |       |     |    |       +-- M=+/-20%, L=+/-15%, K=+/-10%
   |       |     |    +-- 3-digit inductance code (or Rxx for sub-uH)
   |       |     +-- Optional hyphen separator
   |       +-- 4-digit size code (e.g., 4020 = 4.0mm x 2.0mm)
   +-- Series prefix (XAL, XEL, XFL, SER, LPS, MSS, DO, MSD, SLC, SLR)

Example Decoding

XAL4020-222ME
|  |    |  ||
|  |    |  |+-- E = Embossed tape packaging
|  |    |  +-- M = +/-20% tolerance
|  |    +-- 222 = 2.2uH (see value code section)
|  +-- 4020 = 4.0mm x 2.0mm footprint
+-- XAL = Shielded power inductor series

LPS3015-103MLB
|  |    |  |||
|  |    |  ||+-- B = Bulk packaging
|  |    |  |+-- L = +/-15% tolerance
|  |    |  +-- M = +/-20% (sometimes double suffix for different specs)
|  |    +-- 103 = 10uH
|  +-- 3015 = 3.0mm x 1.5mm footprint
+-- LPS = Low Profile Shielded series

Product Series

Power Inductors

Series	Type	Description	Typical Use
XAL	Shielded Power	High current, low DCR	DC-DC converters
XAT	Shielded Power	XAL variant	Point-of-load regulators
XEL	Shielded Low DCR	Ultra-low DC resistance	High efficiency supplies
XFL	Low Profile	Thin shielded inductors	Height-constrained designs
SER	High Efficiency	Optimized for efficiency	High-frequency switching
LPS	Low Profile Shielded	Compact shielded	Mobile devices
MSS	Magnetically Shielded	Fully shielded	EMI-sensitive applications

Drum Core Inductors

Series	Type	Description	Typical Use
DO	Drum Core	Unshielded, high current	Cost-sensitive designs
MSD	Mid-Size Drum	Medium current	General purpose

RF/High-Q Inductors

Series	Type	Description	Typical Use
SLC	High-Q Chip	Ceramic chip, high Q	RF matching
SLR	High-Q Chip RF	RF-optimized	Wireless applications
0402HP	High Performance	0402 size, precision	Compact RF circuits
0603HP	High Performance	0603 size, precision	RF filter circuits

Inductance Value Code

Coilcraft uses a 3-digit code for inductance values:

Standard 3-Digit Code

[D1][D2][M]
 |   |   |
 |   |   +-- Multiplier (10^M in nanohenries)
 |   +-- Second significant digit
 +-- First significant digit

Value (nH) = D1D2 x 10^M
Value (uH) = (D1D2 x 10^M) / 1000

Decoding Examples

Code	Calculation	Value
100	10 x 10^0 nH	10 nH = 0.01 uH
101	10 x 10^1 nH	100 nH = 0.1 uH
102	10 x 10^2 nH	1000 nH = 1.0 uH
222	22 x 10^2 nH	2200 nH = 2.2 uH
472	47 x 10^2 nH	4700 nH = 4.7 uH
103	10 x 10^3 nH	10000 nH = 10 uH
334	33 x 10^4 nH	330000 nH = 330 uH

R-Notation (Sub-Microhenry)

For values less than 1 uH, the "R" notation indicates decimal placement:

Code	Value
R10	0.10 uH
R22	0.22 uH
R33	0.33 uH
R47	0.47 uH
R68	0.68 uH

Tolerance Codes

Code	Tolerance
K	+/- 10%
L	+/- 15%
M	+/- 20%

Packaging Codes

Code	Description
E	Embossed tape (pick-and-place ready)
B	Bulk packaging
R	Tape and reel (sometimes used instead of E)

Size Code Reference

The 4-digit size code encodes physical dimensions:

XXYY
||++-- Height in 0.1mm (YY x 0.1mm)
++---- Length/Width in 0.1mm (XX x 0.1mm)

Common Size Codes

Code	Dimensions (L x W x H)	Notes
2006	2.0mm x 2.0mm x 0.6mm	Ultra-low profile
3012	3.0mm x 3.0mm x 1.2mm	Low profile
3015	3.0mm x 3.0mm x 1.5mm	Low profile
4018	4.0mm x 4.0mm x 1.8mm	Standard
4020	4.0mm x 4.0mm x 2.0mm	Standard
4030	4.0mm x 4.0mm x 3.0mm	Higher current
5030	5.0mm x 5.0mm x 3.0mm	High current
1038	10.0mm x 10.0mm x 3.8mm	Large footprint
1048	10.0mm x 10.0mm x 4.8mm	Large footprint

Package Code Extraction

The handler maps series prefixes to package types:

Series	Extracted Package Type
XAL	Shielded Power
XAT	Shielded Power
XEL	Shielded Low DCR
XFL	Low Profile
SER	High Efficiency
LPS	Low Profile Shielded
MSS	Magnetically Shielded
DO	Drum Core
MSD	Mid-Size Drum
SLC	High Q Chip
SLR	High Q Chip RF
0402HP	0402 High Performance
0603HP	0603 High Performance

Series Extraction

The handler extracts series + size code as the full series identifier:

MPN	Extracted Series
XAL4020-222ME	XAL4020
XFL3012-102MEB	XFL3012
LPS4018-473MLB	LPS4018
DO3316P-472	DO3316P
0402HP-R47	0402HP

DO Series Special Case

The DO series may include an optional suffix letter before the value code:

DO3316P-472
    |  |
    |  +-- P = Variant suffix (C=Standard, P=Power, T=alternate)
    +-- 3316 = Size code

Supported Component Types

The CoilcraftHandler supports:

ComponentType.INDUCTOR - Base inductor type
ComponentType.INDUCTOR_CHIP_COILCRAFT - Coilcraft-specific inductor type

Example MPNs with Full Decoding

XAL4020-222ME

Series:      XAL (Shielded Power Inductor)
Size:        4020 (4.0mm x 4.0mm x 2.0mm)
Inductance:  222 = 22 x 10^2 nH = 2.2 uH
Tolerance:   M = +/- 20%
Packaging:   E = Embossed tape

Full Series: XAL4020
Package:     Shielded Power

XEL4030-102MRB

Series:      XEL (Shielded Low DCR)
Size:        4030 (4.0mm x 4.0mm x 3.0mm)
Inductance:  102 = 10 x 10^2 nH = 1.0 uH
Tolerance:   M = +/- 20%
Options:     R = Tape, B = (possibly bulk variant)

Full Series: XEL4030
Package:     Shielded Low DCR

LPS3015-103MLB

Series:      LPS (Low Profile Shielded)
Size:        3015 (3.0mm x 3.0mm x 1.5mm)
Inductance:  103 = 10 x 10^3 nH = 10 uH
Tolerance:   L = +/- 15%
Packaging:   B = Bulk

Full Series: LPS3015
Package:     Low Profile Shielded

0402HP-R47KB

Series:      0402HP (0402 High Performance)
Inductance:  R47 = 0.47 uH
Tolerance:   K = +/- 10%
Packaging:   B = Bulk

Full Series: 0402HP
Package:     0402 High Performance

DO3316P-472MLB

Series:      DO (Drum Core)
Size:        3316 (3.3mm x 3.3mm x 1.6mm)
Variant:     P = Power variant
Inductance:  472 = 47 x 10^2 nH = 4.7 uH
Tolerance:   L = +/- 15%
Packaging:   B = Bulk

Full Series: DO3316P
Package:     Drum Core

Handler Implementation Notes

Pattern Matching

java

// Coilcraft patterns have consistent structure:
// - 2-3 letter series prefix
// - 4-digit size code
// - Optional hyphen
// - 3-digit value code (or Rxx)
// - Optional tolerance + packaging suffix

// Example pattern for XAL/XEL series:
"^(XA[LT]|XEL)(\\d{4})[-]?(\\d{3}|R\\d{2})([A-Z]*)$"
//  |          |       |    |              |
//  |          |       |    |              +-- Suffix group (tolerance+pkg)
//  |          |       |    +-- Value group (222 or R47)
//  |          |       +-- Optional hyphen
//  |          +-- Size code group (4 digits)
//  +-- Series group

Inductance Value Extraction

The handler includes extractInductanceValue() method that:

Matches the MPN against series patterns
Extracts the 3-digit value code
Parses using standard EIA notation or R-notation
Returns formatted string (e.g., "2.2uH", "470nH")

Official Replacement Check

Two Coilcraft parts are considered official replacements if:

Same series (including size) - e.g., both XAL4020
Same inductance value - e.g., both 2.2uH

Different tolerance or packaging options are compatible replacements.

Related Files

Handler: manufacturers/CoilcraftHandler.java
Component types: INDUCTOR, INDUCTOR_CHIP_COILCRAFT
Tests: Check for CoilcraftHandlerTest.java in handlers package

Learnings & Edge Cases

Hyphen is optional: MPNs may appear as XAL4020-222ME or XAL4020222ME
Suffix variations: Tolerance + packaging may appear in various orders (ME, MEB, MRB)
DO series variant suffix: The C/P/T letter after the size code indicates design variant, not tolerance
HP series different structure: 0402HP and 0603HP don't have a separate size code - the size IS the series prefix
R-notation case sensitivity: While the handler is case-insensitive, R-notation typically appears uppercase
Value code group extraction: For DO pattern, the value code is in group 4 (not group 3) due to the extra variant suffix group
Series includes size for uniqueness: extractSeries() returns "XAL4020" not just "XAL" because different sizes have different current ratings

Pattern Group Numbering

Different series have different regex group structures:

XAL/XEL/XFL/SER/LPS/MSS/MSD/SLC/SLR patterns:
  Group 1: Series prefix (XAL)
  Group 2: Size code (4020)
  Group 3: Value code (222)
  Group 4: Suffix (ME)

DO pattern (has extra variant group):
  Group 1: Series prefix (DO)
  Group 2: Size code (3316)
  Group 3: Variant suffix (P)
  Group 4: Value code (472)
  Group 5: Suffix (MLB)

HP pattern (no separate size):
  Group 1: Series+size (0402HP)
  Group 2: Value code (R47)
  Group 3: Suffix (KB)

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