Description
EC21-EUX overview
Quectel EC21-EUX supports LTE Cat 1 integration for equipment such as meters, gateways and tracking systems. The family reference specifies up to 10 Mbps downlink and 5 Mbps uplink on LTE-FDD. Select the regional suffix, hardware revision and firmware for your host and target network.
Model and supply configuration
The main image is an EC21 series illustration with placeholder model, serial and IMEI fields. It shows the form factor, not this suffix or a current supply batch.
| Sales form | Bare solder-down LCC module; a host PCB and integration are required. This page does not describe a complete modem, USB dongle or evaluation kit. |
|---|---|
| Complete ordering code | Confirm the full module or card P/N, hardware revision, firmware and quantity with the quotation. Historical photographs do not confirm current batch availability. |
| Supplied items | Confirm packaging, antennas, cables, adapters and evaluation accessories in the quotation; they are not automatically included. |
Variant-specific reference
Source: Quectel EC21 Series LTE Standard Specification V2.0, Chinese controlled-document copy, copyright 2023, pages 2-3. Current official family overview checked 2026-09-13. Values below are a revision-specific selection reference, not a supply-batch test report.
EC21-EUX
| Intended region | EMEA / Thailand; confirm operator bands and deployment acceptance separately. |
|---|---|
| LTE-FDD bands | B1/3/7/8/20/28A |
| LTE-TDD bands | None |
| WCDMA bands | B1/8 |
| GSM / EDGE bands | B3/8 |
| Dimensions | 32.0 x 29.0 x 2.4 mm |
|---|---|
| Supply voltage | 3.3-4.3 V; typical 3.8 V. Follow the matching hardware design for supply transients and PCB layout. |
| Temperature | Operating -35 to +75 C; extended -40 to +85 C. |
| LTE-FDD theoretical rate | 10 Mbps downlink / 5 Mbps uplink. Real performance depends on network, signal and implementation. |
| Interfaces | USB 2.0, UART, (U)SIM, PCM and I2C are listed. Check exact pin assignments and electrical levels before PCB design. |
| GNSS | Optional in the cited variant table. Confirm the ordering option, antenna and firmware before specifying positioning. |
| Voice and software | Voice/VoLTE are optional; confirm firmware and network support. Use a driver validated for the target OS and kernel. Features marked under development in old documents are not guaranteed. |
EC21-EUX and EC21-EU share the listed bands but differ in other features: V2.0 lists one SDIO interface for EUX versus two for EU, and no Bluetooth for EUX. Matching bands alone do not establish replacement compatibility.
Use only the fallback technologies listed for the selected suffix and available on the target network. Extended temperature operation has document-specific performance conditions; it is separate from the normal operating range. Form-factor compatibility with EC25, EG25-G or other modules is not a promise of direct replacement.
Technical documents and compliance
- Quectel official EC21 module product and technical resources.
- Reference used for this table: EC21 Series LTE Standard Specification V2.0, pages 2-3. Request the matching full revision with your enquiry.
- Local technical reference: EC21 Series Hardware Design V1.2, dated 2023-07-21. It covers the bare-module family; verify applicable revisions and release notes for the quoted part.
Manufacturer specifications contain regional approval summaries. Certificates, supplier declarations and test reports serve different purposes and must match the exact part, revision and destination. Request applicable documents after enquiry; this page does not claim that a historical certificate establishes the current certification of the quoted item or final host.
Related selection and enquiry
- EC21-EU Mini PCIe – review the separate suffix and hardware form.
- EC21-EUX – review the separate suffix and hardware form.
Send the required full part number, quantity, country/operator, host platform, bands and GNSS/voice needs with your BOM enquiry. Confirm the current quotation and accessory list during follow-up. Visit the Datasheet Center for related references.
