Equivalent & Substitute Parts for 109990021

Part Overview

The 109990021 is a General ISM < 1GHz Transceiver Module manufactured by Seeed Technology Co., Ltd, operating at 433MHz with surface mount packaging. This module is designed for RF communication applications requiring FSK, GFSK, or OOK modulation within the ISM band. The product is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system design and maintenance requirements.

Substiute Parts

109990021

Seeed Technology Co., LtdIn Stock: 1194109990021 Datasheet

Current PartRFQ

ZETA-915-SO

RF SolutionsIn Stock: 1095ZETA-915-SO Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 109990021 is determined by the following critical parameters:

RF Compatibility Parameters:

• RF Family/Standard: General ISM < 1GHz band operation
• Modulation Support: FSK, GFSK, OOK capability
• Voltage Supply Range: 1.8V ~ 3.6V compatibility
• Mounting Type: Surface Mount configuration
• RoHS Compliance: Environmental regulatory alignment

Performance Considerations:

• Frequency band operation (433MHz primary, alternative ISM frequencies acceptable with system redesign)
• Data rate capability (256Kbps minimum)
• Power output and sensitivity specifications
• Operating temperature range (-20°C ~ 85°C minimum)

The ZETA-915-SO qualifies as a substitute based on shared RF family classification, identical modulation support, matching voltage supply range, surface mount packaging, and equivalent RoHS compliance status. Frequency difference (915MHz vs 433MHz) requires system-level antenna and filter redesign but does not preclude functional substitution within ISM band applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution Criteria:

The ZETA-915-SO is classified as an equivalent substitute for the 109990021 based on:

1. Regulatory Compliance: Both modules maintain RoHS compliance (109990021: RoHS Compliant; ZETA-915-SO: ROHS3 Compliant), satisfying environmental and hazardous substance restrictions.

2. Product Availability: The 109990021 is obsolete with no active manufacturing. The ZETA-915-SO maintains active product status with confirmed inventory (1077 Pcs), ensuring supply chain continuity.

3. RF Functional Equivalence: Both modules operate within the General ISM < 1GHz band and support identical modulation schemes (FSK, GFSK, OOK), enabling protocol-level compatibility.

4. Electrical Interface Compatibility: Matching voltage supply range (1.8V ~ 3.6V) and surface mount packaging eliminate power supply redesign requirements.

Design Modification Requirements:

• Frequency Band Transition: Migration from 433MHz to 915MHz requires antenna redesign, RF filter adjustment, and regulatory compliance verification for target market ISM band allocation.
• PCB Layout: Package change from 14-SMD to 12-SMD necessitates PCB footprint modification and signal routing updates.
• Performance Trade-offs: ZETA-915-SO exhibits lower transmit power (13dBm vs 20dBm) and reduced sensitivity (-116dBm vs -121dBm), requiring link budget recalculation for range-critical applications.
• Power Consumption Advantage: ZETA-915-SO demonstrates significantly reduced current draw (18mA ~ 30mA transmit vs 85mA), providing battery life improvement in portable applications.

Frequently Asked Questions (FAQ)

Q: Can the ZETA-915-SO directly replace the 109990021 without PCB modifications?

A: No. The ZETA-915-SO uses a 12-SMD package versus the 109990021's 14-SMD package, requiring PCB footprint redesign. Additionally, the 915MHz frequency requires antenna and matching network modifications.

Q: What are the key electrical compatibility factors?

A: Both modules operate on identical 1.8V ~ 3.6V supply voltage and support the same modulation formats (FSK, GFSK, OOK). These parameters ensure power supply and signal processing compatibility at the system level.

Q: Does the frequency difference affect protocol compatibility?

A: Modulation and protocol compatibility remain unchanged. However, frequency band selection is application-specific and regulated by regional ISM band allocations. System firmware may require tuning adjustments for the new frequency.

Q: How do power consumption differences impact system design?

A: The ZETA-915-SO consumes significantly less current during transmission (18mA ~ 30mA vs 85mA) and reception (10mA vs 18.5mA). This reduction improves battery life in portable applications but does not affect functional compatibility.

Q: Are there performance trade-offs in RF specifications?

A: Yes. The 109990021 provides higher transmit power (20dBm vs 13dBm) and superior receiver sensitivity (-121dBm vs -116dBm). Applications requiring maximum range should account for approximately 7dBm lower output power and 5dBm reduced sensitivity with the ZETA-915-SO.

Q: What is the operating temperature range difference?

A: The ZETA-915-SO extends the low-temperature operating range to -40°C (versus -20°C for the 109990021), providing enhanced performance in cold environment applications.

Q: Are both modules RoHS compliant?

A: Yes. The 109990021 is RoHS Compliant, and the ZETA-915-SO is ROHS3 Compliant. Both meet current environmental and hazardous substance restriction requirements.

Q: What is the primary reason for substitution?

A: The 109990021 is obsolete with no active manufacturing. The ZETA-915-SO is actively produced and stocked, ensuring long-term supply availability for new designs and legacy system maintenance.