Agent skill

sunlord

Sunlord Electronics inductor and ferrite bead MPN encoding patterns, value decoding, and handler guidance. Use when working with Sunlord inductors or SunlordHandler.

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npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/sunlord

SKILL.md

Sunlord Electronics Manufacturer Skill

MPN Structure

Sunlord MPNs follow this structure:

[SERIES][SIZE][TYPE][VALUE][TOLERANCE][OPTIONS]
   |      |     |      |       |         |
   |      |     |      |       |         +-- Packaging/options
   |      |     |      |       +-- M=20%, K=10%, J=5%
   |      |     |      +-- Inductance code (see below)
   |      |     +-- Type/characteristics code
   |      +-- 4-digit metric size code
   +-- Series prefix (SDCL, SWPA, SDFL, GZ)

Example Decoding

SDCL1005C1R0MTDF
|   |   ||  ||||
|   |   ||  |||+-- Additional options
|   |   ||  ||+-- Packaging (T=Tape/Reel)
|   |   ||  |+-- Tolerance (M=+/-20%)
|   |   ||  +-- Inductance (1R0 = 1.0uH)
|   |   |+-- Type code (C)
|   |   +-- Size (1005 = 1.0mm x 0.5mm = 0402 imperial)
|   +-- Series
+-- SDCL = Power Inductor

GZ2012D601TF
| |   ||  ||
| |   ||  |+-- Packaging (F)
| |   ||  +-- Tolerance (T)
| |   |+-- Impedance (601 = 600 ohm at 100MHz)
| |   +-- Type code (D)
| +-- Size (2012 = 2.0mm x 1.2mm = 0805 imperial)
+-- GZ = Ferrite Bead

Series Reference

SDCL - Power Inductors

Feature Description
Type Power inductor
Pattern ^SDCL[0-9]{4}.*
Value encoding Inductance in uH

SWPA - Shielded Power Inductors

Feature Description
Type Power inductor (shielded)
Pattern ^SWPA[0-9]{4}.*
Value encoding Inductance in uH
S prefix in type Indicates shielded

SDFL - Ferrite Chip Inductors

Feature Description
Type Ferrite chip inductor
Pattern ^SDFL[0-9]{4}.*
Value encoding Inductance in uH

GZ - Ferrite Beads

Feature Description
Type Ferrite bead
Pattern ^GZ[0-9]{4}.*
Value encoding Impedance at 100MHz in ohms

Inductance Encoding

Sunlord uses a 3-character inductance code:

R-Notation (Decimal Point)

Code Value Calculation
R47 0.47uH 0.47
R10 0.10uH 0.10
1R0 1.0uH 1.0
2R2 2.2uH 2.2
4R7 4.7uH 4.7

3-Digit Code (Multiplier)

Code Value Calculation
100 10uH 10 x 10^0
101 100uH 10 x 10^1
102 1000uH (1mH) 10 x 10^2
220 22uH 22 x 10^0
221 220uH 22 x 10^1
470 47uH 47 x 10^0
471 470uH 47 x 10^1

Decoding Algorithm

java
// R at start = sub-1uH value
if (code.startsWith("R")) {
    return Double.parseDouble("0." + code.substring(1));  // R47 -> 0.47
}

// R in middle = decimal point
if (code.contains("R")) {
    return Double.parseDouble(code.replace("R", "."));  // 1R0 -> 1.0
}

// 3-digit code: first 2 digits x 10^(3rd digit)
int mantissa = Integer.parseInt(code.substring(0, 2));
int exponent = Integer.parseInt(code.substring(2, 3));
return mantissa * Math.pow(10, exponent);  // 101 -> 10 x 10^1 = 100

Impedance Encoding (Ferrite Beads)

GZ series uses 3-digit impedance code (at 100MHz):

Code Impedance Calculation
601 600 ohm 60 x 10^1
121 120 ohm 12 x 10^1
102 1000 ohm 10 x 10^2
220 22 ohm 22 x 10^0
java
int mantissa = Integer.parseInt(code.substring(0, 2));
int exponent = Integer.parseInt(code.substring(2, 3));
return mantissa * Math.pow(10, exponent);  // 601 -> 60 x 10^1 = 600

Package Size Codes

Metric to Imperial Conversion

Metric (mm) Imperial Notes
1005 0402 1.0 x 0.5mm
1608 0603 1.6 x 0.8mm
2012 0805 2.0 x 1.2mm
3216 1206 3.2 x 1.6mm
3225 1210 3.2 x 2.5mm
4516 1806 4.5 x 1.6mm
4520 1808 4.5 x 2.0mm
4532 1812 4.5 x 3.2mm
5025 2010 5.0 x 2.5mm
6332 2512 6.3 x 3.2mm

Power Inductor Sizes (Stay Metric)

Size Dimensions
2520 2.5 x 2.0mm
3015 3.0 x 1.5mm
4020 4.0 x 2.0mm
4030 4.0 x 3.0mm
5020 5.0 x 2.0mm
5030 5.0 x 3.0mm
6020 6.0 x 2.0mm
6030 6.0 x 3.0mm

Tolerance Codes

Code Tolerance
J +/- 5%
K +/- 10%
M +/- 20%

Handler Implementation Notes

Series Extraction

java
// Returns series + size as the full series identifier
// Example: SDCL1005C1R0MTDF -> "SDCL1005"

if (mpn.startsWith("SDCL")) {
    return "SDCL" + mpn.substring(4, 8);  // SDCL + 4-digit size
}
if (mpn.startsWith("SWPA")) {
    return "SWPA" + mpn.substring(4, 8);
}
if (mpn.startsWith("SDFL")) {
    return "SDFL" + mpn.substring(4, 8);
}
if (mpn.startsWith("GZ")) {
    return "GZ" + mpn.substring(2, 6);  // GZ only has 2-letter prefix
}

Package Code Extraction

java
// Extract 4-digit size code and convert to imperial
String sizeCode = extractSizeCode(mpn);  // e.g., "1005"
String imperial = SIZE_TO_IMPERIAL_MAP.get(sizeCode);  // e.g., "0402"
return imperial != null ? imperial : sizeCode;

Value Extraction

java
// For inductors (SDCL, SWPA, SDFL) - extract inductance
public String extractInductanceValue(String mpn) {
    // Match pattern and extract value code from group 4
    Matcher m = SDCL_PATTERN.matcher(mpn);
    if (m.matches()) {
        return parseInductanceCode(m.group(4));
    }
    // ... similar for SWPA, SDFL
}

// For ferrite beads (GZ) - extract impedance
public String extractImpedanceValue(String mpn) {
    Matcher m = GZ_PATTERN.matcher(mpn);
    if (m.matches()) {
        return parseImpedanceCode(m.group(4));
    }
}

Component Types

Sunlord products map to:

  • INDUCTOR - All inductor products
  • IC - Also registered under IC for pattern matching compatibility

Note: Handler registers both types for each pattern.

Common Part Numbers

MPN Description
SDCL1005C1R0MTDF 1.0uH power inductor, 0402, 20%
SWPA4020S100MT 10uH shielded power inductor, 4020
SDFL2012T1R0M3B 1.0uH ferrite chip inductor, 0805
GZ2012D601TF 600 ohm ferrite bead, 0805

Related Files

  • Handler: manufacturers/SunlordHandler.java
  • Supported types: INDUCTOR, IC
  • No manufacturer-specific ComponentType enum entries

Learnings & Edge Cases

  • GZ series prefix length: GZ has only 2 letters before size code, unlike SDCL/SWPA/SDFL which have 4.
  • Value position varies: In SDCL/SWPA/SDFL the value follows an optional type code. Pattern matching must be flexible.
  • Imperial conversion: Standard chip sizes convert to imperial. Power inductor sizes stay metric (4020 stays 4020).
  • Type code is optional: The single letter between size and value may be empty in some MPNs.
  • Ferrite beads vs inductors: GZ series stores impedance, not inductance. Different extraction method needed.
  • Tolerance position: Tolerance (M/K/J) appears immediately after the value code.

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