4 layers99.9 × 100 mm
Hermeslite
softerhardware/Hermes-Lite2
A second generation low-cost amateur HF software defined radio transceiver.
490 parts384
2 layers50.3 × 30 mm
ISM02
mlab-modules/ISM021ISM RF module with LoRa network capability
- Size
- 50.3 × 30 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 55
- Nets
- 29
- Pads
- 159
- Tracks, vias
- 316, 194
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 24 Oct 2020
- Updated
- 22 Jan 2025
Overview
ISM02 is an open-source printed circuit board by mlab-modules, from the mlab-modules/ISM02 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 50.3 × 30 mm with 55 parts on 29 nets, routed with 316 tracks and 194 vias.
It is built around the PE4259-63 and MIC5504-3.3YM5. Its parts include 23 capacitors, 14 connectors, 7 inductors, 3 ICs and 2 resistors. It belongs with the radio and wireless and home automation and IoT boards of this library.
Main components
2
PE4259-63
SC-70-6-40℃~+85℃ 0.35dB 1.8V~3.3V 10MHz~3GHz 30dB 33.5dBm Integrated control logic SPDT SC-70-6 RF Switches ROHSpSemiRF Switches
MIC5504-3.3YM5
SOT-23-5-40℃~+125℃@(Tj) 1 120uVrms 15uA 180mV@(300mA) 3.3V 300mA 5.5V 75dB@(1kHz) Fixed Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdISM02 - Long Range, Low Power, sub-GHz RF Transceiver
ISM02A is a telemetry module based on the Semtech SX1262 RF transceiver. This module is widely used in LoRa and other sub-GHz wireless communication applications. It incorporates an RF switch (PE4259) to multiplex RX and TX on a single antenna, making it a compact solution for IoT and telemetry use cases.
Features
- RF Transceiver: SX1262
- More power-efficient compared to the SX127x series
- Additional features with a smaller footprint and fewer external components
- Operating frequency range: 150 MHz to 960 MHz
- Supports LoRa and (G)FSK modulation
- Maximum output power: +22 dBm
- Low power consumption: 4.2 mA in receive mode
- Complies with ETSI EN 300 220, FCC CFR 47 Part 15, and other global ISM band regulations
- RF Switch: PE4259 UltraCMOS RF switch
- Frequency range: 10 MHz – 3000 MHz
- Low insertion loss: 0.35 dB @ 1000 MHz
- High isolation: 30 dB @ 1000 MHz
- High ESD tolerance of 2 kV HBM
- Used to multiplex RX and TX on a single antenna
The module is typically used as a LoRa device and offers flexible wireless communication for various low-power, long-range applications.
Applications
- Remote sensors
- Agricultural sensors
- HAB/stratospheric balloon tracking and telemetry
- Remote control applications (UAVs, Robots)
Specifications
| Parameter | Value | Description |
|---|---|---|
| Dimensions | 50.292 x 29.972 mm | Physical size of the module |
| Frequency Range | 150 MHz – 960 MHz | Supports sub-GHz ISM bands |
| Modulation Types | LoRa, FSK | Supports LoRaWAN and proprietary |
| Max Output Power | +22 dBm | Using SX1262 |
| Power Consumption | 4.2 mA in Rx mode | Low power consumption |
| RF Switch | PE4259 | Used for antenna multiplexing |
Additional Resources
Parts
55| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | HEADER_2x01_PARALLEL | Mlab_Pin_Headers:Straight_2x01 | J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J13, J15 |
| 4 | - | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C3, C11, C12 |
| 4 | HOLE | Mlab_Mechanical:MountingHole_3mm | M1, M2, M3, M4 |
| 3 | 10uF | Mlab_R:SMD-0805 | C21, C24, C25 |
| 3 | 3p3 | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C13, C19, C22 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2, C6 |
| 2 | 39pF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C15, C17 |
| 1 | 0R | Inductor_SMD:L_0402_1005Metric | L3 |
| 1 | 100R | Mlab_R:SMD-0603 | R2 |
| 1 | 10k | Mlab_R:SMD-0603 | R1 |
| 1 | 15nH | Inductor_SMD:L_0402_1005Metric | L2 |
| 1 | 15uH | Mlab_R:SMD-0805 | L1 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C18 |
| 1 | 1p8 | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C8 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C5 |
| 1 | 2n5 | Inductor_SMD:L_0402_1005Metric | L5 |
| 1 | 2p2 | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C16 |
| 1 | 2p4 | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C10 |
| 1 | 32MHz | Mlab_XTAL:Crystal_SMD_NX2016SA | Y1 |
| 1 | 470nF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C4 |
| 1 | 47nF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C7 |
| 1 | 47nH | Inductor_SMD:L_0402_1005Metric | L4 |
| 1 | 47pF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C9 |
| 1 | 4n7 | Inductor_SMD:L_0402_1005Metric | L6 |
| 1 | 5p6 | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C14 |
| 1 | 9n1 | Inductor_SMD:L_0402_1005Metric | L7 |
| 1 | BZV55C-5,6V | Mlab_D:Diode-MiniMELF_Standard | D1 |
| 1 | JUMP_3X2 | Mlab_Pin_Headers:Straight_2x03 | J1 |
| 1 | MCX | Mlab_CON:MCX | J12 |
| 1 | MIC5504-3.3YM5 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | PE4259 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U3 |
| 1 | SX1262 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm_ThermalVias | U1 |
Questions
How big is the ISM02 PCB?
It measures 50.3 × 30 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ISM02 use?
55 parts, built around the PE4259-63 and MIC5504-3.3YM5. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the ISM02 KiCad files?
From the mlab-modules/ISM02 repository on GitHub, at the commit this page was made from: the board is hw/sch_pcb/ISM02.kicad_pcb and its schematic hw/sch_pcb/ISM02.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ISM02 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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