QAM-TX1-433 Equivalent & Substitute Parts

Part Overview

The QAM-TX1-433 is an RF transmitter module manufactured by RF Solutions, designed for AM, ASK, and OOK modulation at 433.92MHz. This through-hole antenna module operates across a supply voltage range of 1.5V to 5V with a transmitting current of 22mA and an operating temperature range of -20°C to 60°C.

The QAM-TX1-433 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

QAM-TX1-433

RF SolutionsIn Stock: 1025QAM-TX1-433 Datasheet

Current PartRFQ

QAM-TX2-433

RF SolutionsIn Stock: 1305QAM-TX2-433 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the QAM-TX1-433 are identified based on the following critical parameters that determine functional compatibility:

Frequency Compatibility: The substitute must operate at or near 433MHz to maintain RF channel alignment with existing system designs.

Modulation Support: The substitute must support ASK modulation as a minimum requirement, as this is the common modulation protocol shared between the main part and substitute options.

Supply Voltage Range: The substitute must accommodate the operational voltage requirements of the target application. The QAM-TX1-433 operates from 1.5V to 5V; substitutes with broader or overlapping voltage ranges are acceptable.

Mounting and Package Type: Both the main part and substitutes are module-based components with through-hole mounting capability, ensuring mechanical compatibility with existing PCB designs.

Data Interface: The substitute must provide compatible data interface options (PCB-based or solder pad connections) suitable for integration into the target circuit.

Parameter Comparison

Engineering Selection Recommendations

QAM-TX2-433 as Primary Substitute:

The QAM-TX2-433 is the designated substitute for the obsolete QAM-TX1-433. Both components are manufactured by RF Solutions and share the same ECCN classification (5A991G), indicating equivalent export control status.

The QAM-TX2-433 operates at 433MHz, which is within the ISM band frequency range and compatible with 433.92MHz system designs. The substitute supports ASK modulation, which is the common protocol between both parts.

The QAM-TX2-433 is classified as Active product status, ensuring ongoing availability and supply chain support. The component is ROHS3 compliant, meeting current environmental and regulatory requirements.

Voltage Supply Consideration:

The QAM-TX2-433 operates from 3V to 12V, compared to the QAM-TX1-433 range of 1.5V to 5V. Applications requiring operation below 3V will require circuit redesign or alternative component selection. Applications operating within the 3V to 5V overlap range are directly compatible.

Package and Interface Differences:

The QAM-TX2-433 uses a 4-DIP module package with castellation antenna connector and solder pad data interface, compared to the through-hole antenna and PCB interface of the QAM-TX1-433. PCB layout modifications are required to accommodate these physical differences.

Frequently Asked Questions (FAQ)

Q: Can the QAM-TX2-433 directly replace the QAM-TX1-433 without PCB modifications?

A: No. While both components are RF transmitter modules operating at 433MHz with ASK modulation support, they differ in package configuration, antenna connector type (castellation versus through-hole), and data interface (solder pad versus PCB through-hole). PCB layout redesign is required.

Q: What is the frequency difference between 433.92MHz and 433MHz, and does it affect system operation?

A: The 0.92MHz difference represents a 0.21% deviation from the nominal frequency. Both frequencies operate within the 433MHz ISM band. System compatibility depends on receiver bandwidth and channel filtering specifications, which are not provided in this reference. Verify receiver specifications before implementation.

Q: Is the QAM-TX2-433 suitable for applications requiring operation below 3V?

A: No. The QAM-TX2-433 minimum supply voltage is 3V. Applications requiring 1.5V operation cannot use this substitute without external voltage regulation or alternative component selection.

Q: What are the compliance differences between the two parts?

A: The QAM-TX2-433 is ROHS3 compliant and REACH unaffected. The QAM-TX1-433 compliance status is not specified in the provided data. Both components share the same ECCN classification (5A991G) for export control purposes.

Q: Are there inventory considerations for component selection?

A: The QAM-TX1-433 has 959 pieces in stock as new original inventory. The QAM-TX2-433 has 1233 pieces in stock. The QAM-TX2-433 active product status ensures continued availability, while the QAM-TX1-433 obsolete status indicates no future production.