$5.30

N425AS High-Power LoRa Module | SX1262 | +27dBm | 169/433/868/915MHz

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N425AS LoRa® RF Transceiver Module

Optimized Performance for Long-Range, Power-Efficient LoRaWAN® Solutions

📦 Product Overview

The N425AS is a robust and cost-optimized LoRa® RF transceiver module engineered to deliver excellent range and reliability for LPWAN applications. Building upon the industry-standard Semtech SX1262 transceiver, it integrates an efficient Power Amplifier (PA) to achieve a compelling +27 dBm (0.5 Watt) output power while maintaining the exceptional -148 dBm receiver sensitivity of LoRa® modulation. Supporting key global Sub-1GHz ISM bands (169, 433, 868, 915 MHz) and fully compatible with LoRaWAN® protocols, the N425AS strikes the perfect balance between performance, power consumption, and cost. It is an outstanding choice for high-volume, battery-conscious end-nodes and gateways requiring dependable, kilometer-scale connectivity.

✨ Key Features & Benefits

Feature	Benefit
Superior Range & Efficiency	Delivers +27 dBm transmit power and industry-leading -148 dBm sensitivity for a robust link budget, extending device reach while optimizing for lower peak current draw (~300 mA) compared to higher-power alternatives.
LoRaWAN® Compatible	Fully supports the LoRa® physical layer and is designed for seamless integration with LoRaWAN® network stacks, enabling quick deployment in both public and private IoT networks.
Cost-Effective Performance	Provides the core benefits of long-range LoRa® communication in a value-engineered package, ideal for price-sensitive, high-volume applications like metering and sensor networks.
Professional RF Integrity	Implemented on a 4-layer impedance-controlled PCB, ensuring excellent RF performance, signal integrity, and resistance to interference for stable operation in diverse environments.
Complete Design Freedom	All pins of the SX1262 IC are accessible, offering developers full flexibility for custom firmware, advanced power management, and direct peripheral interfacing.
Ultra-Low Standby Power	Leverages the SX1262's deep sleep capabilities, with a typical standby current of just 1 µA, dramatically extending battery life in remote sensing applications.

🔧 Technical Specifications

Parameter	Specification
Core RF IC	Semtech SX1262
Frequency Bands	169 MHz, 433 MHz, 868 MHz, 915 MHz
Max. Output Power	+27 dBm (typ)
Receiver Sensitivity (LoRa®)	-148 dBm (typ)
LoRa® Data Rate Range	0.3 – 62.5 kbps
Modulation	LoRa®, (G)FSK, BPSK
Core Supply Voltage (VCC)	3.3V (2.4V – 3.6V)
PA Supply Voltage (VCCPA)	5.0V (3V – 7V) (typ)
TX Current (peak)	300 mA (typ)
RX Current	10 mA (typ)
Standby Current	1 µA (typ)
Interface	SPI
Antenna Connection	50Ω RF Pad / IPEX Connector
PCB Design	4-Layer, Impedance Controlled
Pin Accessibility	Full SX1262 pin breakout
Operating Temperature	-30°C to +75°C

📊 Performance Data

Parameter	Value	Conditions
Maximum Range	Up to 5 km	Clear line-of-sight, 3 dBi antenna, SF12, 125 kHz
Link Budget	Up to 175 dB	+27 dBm TX, -148 dBm RX sensitivity
Frequency Stability	±1.5 ppm	Integrated TCXO crystal

🔌 Module Pinout Description

Please refer to the full N425AS datasheet for detailed pinout and footprint drawings.

Pin No.	Pin Name	Type	Description
1	GND	Power	Power Ground
2	GND	Power	Power Ground
3	VCCPA	Power	PA Power Supply. Range: 4.5V – 5.5V
4	VCCPA	Power	Same as pin 3
5	GND	Power	Power Ground
6	DIO1	Digital I/O	Programmable GPIO / IRQ
7	DIO2	Digital I/O	Programmable GPIO
8	DIO3	Digital I/O	Programmable GPIO
9	DIO4	Digital I/O	Programmable GPIO
10	DIO5	Digital I/O	Programmable GPIO
11	DIO6	Digital I/O	Programmable GPIO
12	DIO7	Digital I/O	Programmable GPIO
13	NSS	Digital Input	SPI Chip Select (active low)
14	SCK	Digital Input	SPI Clock
15	MOSI	Digital Input	SPI Master Out Slave In
16	MISO	Digital Output	SPI Master In Slave Out
17	RESET	Digital Input	Module Hardware Reset (active low)
18	BUSY	Digital Output	Status indicator (high when busy)
19	VCC	Power	Core Supply. 3.3V typical
20	GND	Power	Power Ground
21	RF	RF I/O	50Ω Antenna Port
22	GND	Power	Power Ground

🌍 Global Frequency Band Support

Band	Frequency Range	Key Target Region	Primary Application
169 MHz	160–175 MHz	Europe	Smart metering, telemetry
433 MHz	410–510 MHz	Global (SRD)	General IoT
868 MHz	863–870 MHz	EU	LoRaWAN®, ISM
915 MHz	902–928 MHz	Americas	LoRaWAN®, ISM

🌍 Target Applications

Smart Metering (AMR/AMI) – Long-life, long-range water, gas, and electricity meters.

Industrial & Environmental Sensors – Remote monitoring of tank levels, soil conditions, air quality, and equipment status.

Asset Tracking – Logistics and pallet tracking devices requiring extended battery life and reliable location updates.

Smart City & Building Automation – Parking sensors, waste management sensors, and building monitoring systems.

LoRaWAN® End Devices & Gateways – Serves as an excellent RF core for both battery-operated endpoints and cost-effective gateway designs.

📦 Ordering Information

Ordering Code	Core IC	Frequency Range	Output Power	Key Applications
N425AS-169M	SX1262	160–175 MHz	+27 dBm	EU metering, telemetry
N425AS-433M	SX1262	410–510 MHz	+27 dBm	Global IoT, sensors
N425AS-868M	SX1262	863–870 MHz	+27 dBm	EU LoRaWAN®, ISM
N425AS-915M	SX1262	902–928 MHz	+27 dBm	Americas LoRaWAN®, ISM

Please confirm the exact frequency range variant when ordering.

✅ Regulatory Compliance

Region	Standard	Status
EU	EN 300 220, EN 301 489, EN 60950	Compliant
US	FCC Part 15	Modular approval pending – pre‑scanned
Environmental	RoHS, REACH	Compliant

📞 Contact our compliance team for certification support.

❓ Why Choose the N425AS?

Advantage	N425AS Delivers
LoRa® Ecosystem Leader	Built on Semtech SX1262, the industry standard for long-range LPWAN.
Optimized Power Efficiency	+27 dBm output with 400 mA peak current – balances range and battery life.
Exceptional Sensitivity	-148 dBm sensitivity ensures reliable links even in challenging environments.
Cost-Effective	Value-engineered for high-volume deployments without compromising performance.
Design Flexibility	Full pin access enables custom firmware and direct integration with host MCUs.
Ultra-Low Standby	1 µA sleep current extends battery life to years.
Multi-Band Support	One hardware platform covers global ISM bands, simplifying inventory.
Industrial Grade	-30°C to +75°C operation, 4-layer PCB for robust performance.

📐 Product Line Positioning: Find Your Fit

The N425AS is part of our comprehensive LoRa® SMD module family. Compare and select the right module for your project.

Feature / Model	N401AS	N425AS	N426AS	N427AS
Core IC	SX1262	SX1262	SX1262	SX1262
Output Power	+22 dBm	+27 dBm	+30 dBm	+33 dBm
PA + LNA	No	PA Only	Yes	Yes
Form Factor	SMD	SMD	SMD	SMD
Interface	SPI	SPI	SPI	SPI
Antenna	IPEX + stamp hole	IPEX + stamp hole	IPEX + stamp hole	IPEX + stamp hole
Ideal For	LoRa Battery sensors, short range	Mid-range end nodes, battery-powered devices	Long-range end nodes, cost-sensitive gateways	Long-range end nodes, gateways
Development Effort	Full (SDK)	Full (SDK)	Full (SDK)	Full (SDK)

🧭 Simple Selection Guide

Need a low-power, long-range module for battery-powered sensors?
→ Choose N401AS – +22 dBm, ultra-low power, cost-optimized.
Looking for a balanced combination of range and cost for end nodes or gateways?
→ Pick N425AS – +27 dBm with integrated PA, full SDK access, ideal for custom LoRaWAN® devices.
Looking for a balance of range and cost for end nodes or gateways?
→ Pick N426AS – +30 dBm with PA, full SDK access, ideal for custom LoRaWAN® devices.
Want a drop‑in solution with AT commands – no programming?
→ Consider N427AS – +33 dBm, pre-loaded AT firmware, fastest time‑to‑market.
Need a shielded module for harsh industrial environments?
→ Go with N428AS – +37 dBm, metal shielding, enhanced EMI protection.
Prototyping with a USB dongle?
→ Our N431AP (0.1W) evaluation boards expose full debug pins and USB interface for rapid development.