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LFXTAL072787 50 MHz Crystal Equivalent & Substitute Parts
Part Overview
The LFXTAL072787 is a 50 MHz fundamental mode crystal manufactured by IQD Frequency Products, designed for surface mount applications requiring precise frequency control. This active product is specified with 18pF load capacitance, 35 Ohms equivalent series resistance, and operates across the -40°C to 85°C temperature range. The component is packaged in a 4-SMD, No Lead configuration with RoHS3 compliance.
Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or manufacturer preference while maintaining identical electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Frequency | 50.0000 | MHz |
| Frequency Tolerance | ±20 | ppm |
| Frequency Stability | ±30 | ppm |
| Load Capacitance | 18 | pF |
| Equivalent Series Resistance (ESR) | 35 | Ohms |
| Operating Mode | Fundamental | — |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | 4-SMD, No Lead | — |
| Physical Dimensions | 3.20 x 2.50 x 0.80 | mm (L x W x H) |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution eligibility for the LFXTAL072787 is determined by strict equivalence across the following critical parameters:
Frequency Specification: Exact match at 50.0000 MHz Load Capacitance: Exact match at 18pF Equivalent Series Resistance: Exact match at 35 Ohms Operating Temperature Range: Minimum coverage of -40°C to 85°C Package Configuration: Identical 4-SMD, No Lead form factor Physical Dimensions: Matching 3.20mm x 2.50mm x 0.80mm maximum height Mounting Technology: Surface mount compatibility Compliance Standards: RoHS3 compliance required
The substitute part ABM8-50.000MHZ-D2X-T from Abracon LLC meets all specified parameters and is classified as a parametric equivalent.
Parameter Comparison
| Parameter | LFXTAL072787 (IQD) | ABM8-50.000MHZ-D2X-T (Abracon) | Match Status |
|---|---|---|---|
| Manufacturer | IQD Frequency Products | Abracon LLC | Different |
| Series | CFPX-180 | ABM8 | Different |
| Frequency | 50.0000 MHz | 50.0000 MHz | Identical |
| Frequency Tolerance | ±20 ppm | ±20 ppm | Identical |
| Load Capacitance | 18 pF | 18 pF | Identical |
| ESR | 35 Ohms | 35 Ohms | Identical |
| Operating Mode | Fundamental | Fundamental | Identical |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Identical |
| Package / Case | 4-SMD, No Lead | 4-SMD, No Lead | Identical |
| Physical Dimensions | 3.20 x 2.50 x 0.80 mm | 3.20 x 2.50 x 0.80 mm | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| Product Status | Active | Active | Identical |
Engineering Selection Recommendations
Both the LFXTAL072787 and ABM8-50.000MHZ-D2X-T are active products with full RoHS3 compliance and REACH unaffected status. Selection between these components is based on availability and supply chain requirements rather than technical differentiation.
The LFXTAL072787 (IQD Frequency Products) currently maintains 1699 pieces in stock inventory. The ABM8-50.000MHZ-D2X-T (Abracon LLC) maintains 1726 pieces in stock inventory.
Both components satisfy identical electrical performance requirements, mechanical compatibility, and regulatory compliance. PCB layout and circuit design considerations remain unchanged between substitution options. No design modifications or re-qualification testing is required when transitioning between these parts.
Frequently Asked Questions (FAQ)
Q: Can ABM8-50.000MHZ-D2X-T be used as a direct replacement for LFXTAL072787?
A: Yes. Both components share identical frequency, load capacitance, ESR, operating temperature range, package configuration, and physical dimensions. No circuit modifications are required.
Q: Are there differences in frequency stability between these parts?
A: The LFXTAL072787 specifies ±30ppm frequency stability, while the ABM8-50.000MHZ-D2X-T specifies ±20ppm frequency stability. Both meet the ±20ppm frequency tolerance requirement. The ABM8 provides tighter stability performance.
Q: Do these crystals require different PCB footprints?
A: No. Both components use identical 4-SMD, No Lead packaging with matching 3.20mm x 2.50mm x 0.80mm dimensions. PCB footprints and assembly processes remain unchanged.
Q: Are both parts suitable for -40°C to 85°C operating environments?
A: Yes. Both components are specified for the full -40°C to 85°C operating temperature range.
Q: What is the load capacitance requirement for circuit design?
A: Both components require 18pF load capacitance. Oscillator circuit design parameters remain identical between parts.
Q: Are there compliance or certification differences?
A: Both components are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Regulatory status is equivalent.
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