Allegro MicroSystems MPN encoding patterns, suffix decoding, and handler guidance. Use when working with current sensors, motor drivers, or Hall effect sensors.
Allegro MPNs follow this general structure:
[FAMILY][SERIES][PACKAGE][VARIANT]-[RATING]-[SUFFIX]
│ │ │ │ │ │
│ │ │ │ │ └── T = Tape/Reel, Pb-free
│ │ │ │ └── Current rating (05B = 5A bidirectional)
│ │ │ └── TR = Tape and Reel
│ │ └── Package code (ELC, LLC, SE, etc.)
│ └── Series number (712, 723, 4988, etc.)
└── Family prefix (ACS, A, AH, AAS)
ACS712ELCTR-05B-T
│ │ │ │ │ │
│ │ │ │ │ └── T = Pb-free/Tape and Reel qualifier
│ │ │ │ └── 05B = 5A bidirectional current sensing
│ │ │ └── TR = Tape and Reel packaging
│ │ └── ELC = SOIC-8 package
│ └── 712 = Series number
└── ACS = Current Sensor family
A4988SETTR-T
│ │ │
│ │ └── T = Tape and Reel
│ └── SETTR = QFN package, Tape and Reel
└── A4988 = Stepper motor driver
A1324LLHLT-T
│ │ │
│ │ └── T = Tape and Reel
│ └── LLHLT = SOT-23 package (LLH), Tape and Reel
└── A1324 = Linear Hall effect sensor
| Code | Package | Notes |
|---|---|---|
| ELC | SOIC-8 | Standard 8-pin SOIC |
| LLC | SOIC-8 | Leadless version |
| KLC | SOIC-8-EP | Enhanced thermal pad |
| LH | SOT-23 | Small outline package |
| Code | Package | Notes |
|---|---|---|
| SE/SET | QFN | Quad Flat No-leads |
| SL/SLB | SOIC-24 | 24-pin SOIC |
| ET | QFN | QFN variant |
| KLJ | TO-92 | Through-hole |
| Code | Package | Notes |
|---|---|---|
| LUA | SIP-3 | Single in-line (3-pin) |
| EUA | SIP-4 | Single in-line (4-pin) |
| LH/LLH | SOT-23 | Small outline transistor |
| KUA | TO-92 | Through-hole |
| Prefix | Category | Examples |
|---|---|---|
| ACS7xx | Hall-effect current sensors | ACS712, ACS723, ACS758 |
| ACS37xxx | Coreless current sensors | ACS37612, ACS37030 |
| Prefix | Category | Examples |
|---|---|---|
| A39xx | Stepper motor drivers | A3967 (Easy Driver) |
| A49xx | Stepper motor drivers | A4988 (common in 3D printers) |
| A59xx | BLDC motor drivers | A5931, A5932 |
| Prefix | Category | Examples |
|---|---|---|
| A13xx | Linear Hall sensors | A1301, A1324, A1325, A1326 |
| AH | Hall switches | AH3362, AH3366 |
| Prefix | Category | Examples |
|---|---|---|
| A6xxx | General LED drivers | A6261, A6262 |
| A8xxxx | High power LED drivers | A80601, A80604 |
| Suffix | Meaning |
|---|---|
| 05B | ±5A bidirectional |
| 10B | ±10A bidirectional |
| 20A | ±20A bidirectional |
| 30A | ±30A bidirectional |
| 40AB | ±40A bidirectional |
| 05AU | 0-5A unidirectional |
| 20AU | 0-20A unidirectional |
| Series | Type | Use Case |
|---|---|---|
| ACS712 | Hall-effect, isolated | Arduino current sensing, power monitoring |
| ACS723 | Hall-effect, low noise | Precision current measurement |
| ACS758 | Hall-effect, high current | Industrial, automotive |
| ACS37612 | Coreless, differential | Battery management, motor control |
| Series | Type | Use Case |
|---|---|---|
| A4988 | Stepper, microstepping | 3D printers, CNC machines |
| A3967 | Stepper, Easy Driver | Hobbyist robotics |
| A4950 | DC brushed motor | Simple motor control |
| A4953 | DC brushed, full bridge | H-bridge applications |
| Series | Type | Use Case |
|---|---|---|
| A1324/5/6 | Linear, ratiometric | Position sensing, current sensing |
| A1301/2 | Linear, analog output | Proximity sensing |
| AH33xx | Hall switch, latching | RPM measurement, position detection |
// Current sensors use letter codes after series number
// ACS712ELCTR -> ELC = SOIC-8
// ACS723LLCTR -> LLC = SOIC-8 (leadless)
// ACS723KLCTR -> KLC = SOIC-8-EP (enhanced thermal pad)
// Motor drivers use suffix codes
// A4988SETTR -> SET = QFN
// A3967SLBT -> SLB = SOIC-24
// Hall sensors use suffix codes
// A1324LUA -> LUA = SIP-3
// A1324LLH -> LLH = SOT-23
// Current sensors: Extract full ACSxxx or ACS3xxxx
// ACS712ELCTR-05B-T -> ACS712
// ACS37612LLCATR-030B5-T -> ACS37612
// Motor drivers: Extract Axxxx (5 chars)
// A4988SETTR-T -> A4988
// A3967SLBT -> A3967
// Hall sensors: Extract A1xxx (5 chars) or AHxxxx (6 chars)
// A1324LUA-T -> A1324
// AH3362Q -> AH3362
manufacturers/AllegroHandler.javaSENSOR_CURRENT, MOTOR_DRIVER, HALL_SENSOR, LED_DRIVER, SENSOR, IChandlers/AllegroHandlerTest.java