Semtech Corporation Manufacturer Skill

MPN Structure

Semtech has several product lines with different MPN structures:

LoRa Transceivers

SX[SERIES][VARIANT]-[PACKAGE]
   |   |      |        |
   |   |      |        +-- Package (QFN, etc.)
   |   |      +-- Variant (frequency band, features)
   |   +-- Series (127x, 126x, 130x)
   +-- Semtech Transceiver prefix

LR11xx Series (Newest LoRa)

LR[SERIES][VARIANT]-[PACKAGE]
   |   |      |        |
   |   |      |        +-- Package code
   |   |      +-- Variant (GNSS, features)
   |   +-- Series (1110, 1120, 1121)
   +-- Long Range prefix

ESD Protection

[FAMILY][SPEC][PACKAGE]
   |       |      |
   |       |      +-- Package suffix (P=SOT-23, T=SC70)
   |       +-- Clamping voltage/channels
   +-- RCLAMP, SLVU, SM series

Example Decoding

SX1276IMLTRT
|  |   |  ||
|  |   |  |+-- T = Tape and Reel
|  |   |  +-- R = Reel packaging
|  |   +-- IMLT = IMLT package
|  +-- 1276 = 868/915 MHz transceiver
+-- SX = Semtech Transceiver

RCLAMP0524P
|     |   |
|     |   +-- P = SOT-23 package
|     +-- 0524 = 5V, 24A clamp
+-- RCLAMP = Rail clamp ESD protection

Product Families

LoRa Transceivers - SX127x (Legacy)

| Part | Frequency | Features | |------|-----------|----------| | SX1276 | 868/915 MHz | High performance | | SX1277 | 868/915 MHz | Lower power | | SX1278 | 433/470 MHz | Lower frequency | | SX1279 | 433/470 MHz | Variant |

LoRa Transceivers - SX126x (Current)

| Part | Frequency | Features | |------|-----------|----------| | SX1261 | 868/915 MHz | Low power, +15 dBm | | SX1262 | 868/915 MHz | High power, +22 dBm | | SX1268 | 433/490 MHz | Low frequency bands |

LoRa Gateway Chips - SX130x

| Part | Description | |------|-------------| | SX1301 | 8-channel digital baseband (legacy) | | SX1302 | 8-channel, lower power | | SX1303 | 8-channel with enhanced features |

LoRa Edge - LR11xx

| Part | Features | |------|----------| | LR1110 | LoRa + GNSS + WiFi scanning | | LR1120 | Multi-band LoRa transceiver | | LR1121 | Enhanced LR1120 |

LLCC68 (Low-Cost LoRa)

| Part | Description | |------|-------------| | LLCC68 | Cost-optimized LoRa transceiver |

ESD Protection Products

RCLAMP Series

Rail clamp ESD protection for high-speed interfaces.

| Part | Channels | Clamping | |------|----------|----------| | RCLAMP0502A | 2 | 5V | | RCLAMP0524P | 2 | 5V, 24A |

SLVU Series

TVS diode arrays for data lines.

| Part | Description | |------|-------------| | SLVU2.8-4 | 2.8V, 4-channel |

SM Series

TVS protection diodes.

| Part | Description | |------|-------------| | SM712 | TVS for RS-485 | | SM15T33A | 33V TVS |

Package Codes

| Code | Package | Notes | |------|---------|-------| | QFN | QFN | Standard QFN | | QFN24 | QFN-24 | 24-pin QFN | | QFN32 | QFN-32 | 32-pin QFN | | TQFN | TQFN | Thin QFN | | SOT23 | SOT-23 | 3-pin SOT | | SOT23L | SOT-23-6 | 6-pin SOT | | SC70 | SC70 | Small package | | DFN8 | DFN-8 | 8-pin DFN | | IMLT | IMLT | LoRa module package | | IMLTR | IMLT-TR | IMLT, tape and reel | | TR | Tape & Reel | Packaging option | | TRG | Tape & Reel (Green) | RoHS packaging |

ESD Part Package Suffixes

// Package embedded in MPN suffix
RCLAMP0524P -> P = SOT-23
RCLAMP0524T -> T = SC70

Signal Integrity Products

ClearEdge Series

| Prefix | Description | |--------|-------------| | GN | ClearEdge clock/data | | GS | Signal conditioners |

| Part | Description | |------|-------------| | GN2033 | Quad LVDS repeater | | GS12090 | 12G video redriver |

Power Management

SC Series

| Part | Description | |------|-------------| | SC4238 | Buck converter | | SC5501 | LED driver |

SY Series (Former Micrel)

| Part | Description | |------|-------------| | SY8089 | Sync buck regulator | | SY8113 | 3A sync buck |

Handler Implementation Notes

Series Extraction

// LoRa transceivers - extract full series (6 chars)
// SX1276IMLTRT -> SX1276
if (upperMpn.startsWith("SX127")) {
    return extractUpToDigitsOrDash(upperMpn, 6);
}

// ESD protection - extract family name
// RCLAMP0524P -> RCLAMP
if (upperMpn.startsWith("RCLAMP")) {
    return "RCLAMP";
}

Package Code Extraction

// Extract from suffix after last hyphen
// SX1262-QFN24 -> QFN-24

// ESD parts encode package in MPN
// RCLAMP0524P -> P -> SOT-23

Matching Logic

The handler supports multiple component types:

ComponentType.IC - for all Semtech ICs
ComponentType.RF_IC_SKYWORKS - for LoRa transceivers (RF)
ComponentType.ESD_PROTECTION_NEXPERIA - for ESD protection devices

Series Compatibility

LoRa Transceiver Compatibility

SX127x family - NOT compatible with SX126x (different API)
SX1261 <-> SX1262 - Compatible (different power output)
SX1262 <-> SX1268 - Compatible for overlapping frequencies
SX1302 <-> SX1303 - Gateway chips, compatible
LR11xx family - Compatible within family

Handler `isOfficialReplacement()` Logic

// Same series with different packages are compatible
// SX1261 and SX1262 are compatible (power difference)
// SX1302 and SX1303 are compatible (gateway chips)
// LR11xx series are compatible within family
// Different generations (SX127x vs SX126x) are NOT directly compatible

Related Files

Handler: manufacturers/SemtechHandler.java
Component types: IC, RF_IC_SKYWORKS, ESD_PROTECTION_NEXPERIA

Common MPNs

| MPN | Description | Application | |-----|-------------|-------------| | SX1276IMLTRT | 868/915 MHz LoRa | Long range IoT | | SX1262IMLTRT | 868/915 MHz LoRa | Low power IoT | | SX1302CSS | LoRa gateway | 8-channel gateway | | LR1110IMLTRT | LoRa + GNSS | Asset tracking | | LLCC68 | Low-cost LoRa | Consumer IoT | | RCLAMP0524P | ESD protection | USB interfaces | | SM712 | RS-485 TVS | Industrial comm |

Applications

LoRaWAN IoT devices
Long-range wireless sensors
Smart meters
Asset tracking
LoRa gateways
ESD protection for USB, HDMI, Ethernet
Industrial communication (RS-485)

Learnings & Edge Cases

LoRa vs LoRaWAN: SX chips are transceivers; LoRaWAN is a protocol running on top.
SX127x vs SX126x API difference: These generations use different register APIs - not drop-in replacements.
Frequency bands in MPN: Not always explicit - SX1276 supports 868/915, SX1278 supports 433/470.
IMLT package: Common for LoRa modules, includes matching network.
ESD protection naming: RCLAMP = rail clamp (fast), SLVU = TVS array.
Power output difference: SX1261 (+15 dBm) vs SX1262 (+22 dBm) - different power levels, same pinout.
LR11xx multi-function: These include LoRa + GNSS + WiFi scanning in one chip for geolocation.