isocom

# Isocom Components Manufacturer Skill ## Overview Isocom Components is a manufacturer of optocouplers and solid state relays. Their product lines include proprietary ISP/ISQ/ISD series as well as industry-standard compatible devices. ## MPN Structure Isocom MPNs follow these general patterns: ### ISP/ISQ/ISD Series (Isocom Proprietary) ``` [PREFIX][SERIES][CTR-GRADE][-PACKAGE][X] | | | | | | | | | +-- Optional: X = Lead-free (RoHS) | | | +-- Package: -1=DIP-4, -2=DIP-6, -4=DIP-8 | | +-- CTR Grade: A/B/C/D (Current Transfer Ratio) | +-- Series number (e.g., 817, 827, 847) +-- Prefix: ISP, ISQ, ISD ``` ### Example Decoding ``` ISP817A-1X | | | | | | | | | +-- X = Lead-free | | | +-- -1 = DIP-4 package | | +-- A = CTR grade (highest CTR) | +-- 817 = Series number +-- ISP = Phototransistor output ISQ827B | | | | | +-- B = CTR grade (medium-high CTR) | +-- 827 = Dual channel series +-- ISQ = High CTR optocoupler ``` --- ## Product Lines ### ISP Series - Phototransistor Output | Series | Description | Channels | |--------|-------------|----------| | ISP817 | General purpose phototransistor | 1 | | ISP827 | Dual channel phototransistor | 2 | | ISP847 | Quad channel phototransistor | 4 | ### ISQ Series - High CTR | Series | Description | Channels | |--------|-------------|----------| | ISQ817 | High CTR optocoupler | 1 | | ISQ827 | High CTR dual channel | 2 | ### ISD Series - Darlington Output | Series | Description | Output | |--------|-------------|--------| | ISD817 | Darlington output | Single | | ISD827 | Darlington dual | Dual | ### 4N Series - Standard Optocouplers | Part | Description | Isolation | |------|-------------|-----------| | 4N25 | Phototransistor output | 5300V | | 4N26 | Phototransistor output | 5300V | | 4N27 | Phototransistor output | 5300V | | 4N28 | Phototransistor output | 5300V | | 4N35 | Phototransistor, high isolation | 7500V | | 4N36 | Phototransistor, high isolation | 7500V | | 4N37 | Phototransistor, high isolation | 7500V | ### 6N Series - Logic Output | Part | Description | Output | |------|-------------|--------| | 6N135 | High speed, TTL compatible | Push-pull | | 6N136 | High speed, TTL compatible | Push-pull | | 6N137 | High speed logic output | Totem pole | | 6N138 | Darlington output | Open collector | | 6N139 | Darlington output | Open collector | ### MOC Series - Triac/SCR Drivers | Prefix | Description | Driver Type | |--------|-------------|-------------| | MOC30xx | Zero-crossing triac | Safe switch-on at zero | | MOC31xx | Random phase triac | Switch any phase | | MOC32xx | SCR output | Thyristor driver | --- ## CTR (Current Transfer Ratio) Grades For ISP/ISQ/ISD series: | Grade | CTR Range | Application | |-------|-----------|-------------| | A | 80-160% | Highest gain, lowest LED current needed | | B | 130-260% | High gain | | C | 200-400% | Medium gain | | D | 300-600% | Wide range, lower gain | **Note**: Grade A can typically replace B/C/D in applications. Higher letter = lower minimum CTR. --- ## Package Codes | Code | Package | Pins | Notes | |------|---------|------|-------| | -1 | DIP-4 | 4 | Standard 4-pin DIP | | -2 | DIP-6 | 6 | 6-pin DIP (dual channel) | | -4 | DIP-8 | 8 | 8-pin DIP (quad channel) | | -1S | SMD-4 | 4 | SMD variant | | -2S | SMD-6 | 6 | SMD variant | | -4S | SMD-8 | 8 | SMD variant | | X | Lead-free | - | RoHS compliant suffix | ### Default Packages by Series | Series | Default Package | |--------|-----------------| | 4N | DIP-6 | | 6N | DIP-8 | | MOC | DIP-6 | | H11 | DIP-6 | | ISP817 | DIP-4 | | ISQ/ISD | DIP-4 | --- ## Compatible/Equivalent Series Isocom makes drop-in replacements for: | Isocom | Original | Manufacturer | |--------|----------|--------------| | TLP521 | TLP521 | Toshiba | | TLP621 | TLP621 | Toshiba | | PC817 | PC817 | Sharp | | CNY17 | CNY17 | Vishay | | IL300 | IL300 | Vishay | | SFH6xxx | SFH6xxx | OSRAM | | H11xx | H11xx | Fairchild | --- ## Handler Implementation Notes ### Pattern Matching ```java // Isocom-specific series (ISP, ISQ, ISD) "^IS[PQD][0-9]{3}.*" // Standard optocoupler series "^4N[0-9]{2}.*" // 4N25, 4N35, etc. "^6N1[0-9]{2}.*" // 6N135, 6N137, etc. // MOC triac/SCR drivers "^MOC3[0-2][0-9]{2}.*" // MOC30xx, MOC31xx, MOC32xx ``` ### Series Extraction ```java // ISP/ISQ/ISD returns the prefix "ISP817A" -> "ISP" "ISQ827B" -> "ISQ" "ISD817-1" -> "ISD" // 4N returns specific part "4N25" -> "4N25" "4N35A" -> "4N35" // MOC returns prefix group "MOC3020" -> "MOC30xx" "MOC3162" -> "MOC31xx" ``` ### Package Extraction Logic ```java // Check hyphen-based suffix first "ISP817A-1" -> "DIP-4" "ISP817A-1S" -> "SMD-4" // Trailing digit for IS* series (no hyphen) "ISP8171" -> "DIP-4" // Default by series "4N25" -> "DIP-6" // No explicit package "6N137" -> "DIP-8" "MOC3020" -> "DIP-6" ``` ### Replacement Logic - Same IS* series with different CTR grades: higher grade (A) can replace lower (B/C/D) - 4N series within same group (25-28 or 35-37) are often interchangeable - MOC series must match driver type (30xx, 31xx, 32xx not interchangeable) - Package must be compatible (DIP cannot replace SMD directly) --- ## Related Files - Handler: `manufacturers/IsocomHandler.java` - Component types: `ComponentType.IC` --- ## Learnings & Edge Cases - **4N series package detection**: Do NOT apply trailing digit package logic to 4N series. "4N25" ends with "5" but that's the part number, not a package code. Always return default DIP-6 for 4N. - **CTR grade position**: CTR grade letter comes immediately after the 3-digit series number, before any hyphen or suffix. - **MOC compatibility**: MOC30xx (zero-crossing) and MOC31xx (random phase) are NOT interchangeable - they have different triggering behavior. - **6N series speed**: 6N137 is significantly faster than 6N135/6N136. Not always interchangeable in high-speed applications. - **Lead-free suffix**: X suffix indicates RoHS compliance. Does not affect electrical compatibility. <!-- Add new learnings above this line -->