Cantara/semtech
.claude/skills/manufacturers/semtech/SKILL.md
Semtech Corporation MPN encoding patterns, LoRa transceiver decoding, ESD protection, and handler guidance. Use when working with Semtech components or SemtechHandler.
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TrivyContainer and dependency vulnerability scanner
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Last scanned: Apr 16, 2026, 6:04 PM4.9s1 file scanned
SKILL.md
- name:
- semtech
- description:
- Semtech Corporation MPN encoding patterns, LoRa transceiver decoding, ESD protection, and handler guidance. Use when working with Semtech components or SemtechHandler.
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 ICsComponentType.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.
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