7C-40.000MBB-T Equivalent & Substitute Parts

Part Overview

The 7C-40.000MBB-T is a 40 MHz crystal oscillator manufactured by TXC CORPORATION, designed for applications requiring a standard XO (Oscillator) with CMOS output and Enable/Disable functionality. This Surface Mount Device (SMD) operates at 3.3V supply voltage with ±50ppm frequency stability across an operating temperature range of -10°C to 70°C. The part is currently Active in product status with 834 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's specifications, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

7C-40.000MBB-T

TXC CORPORATIONIn Stock: 8807C-40.000MBB-T Datasheet

Current PartRFQ

7C-40.000MBA-T

TXC CORPORATIONIn Stock: 21457C-40.000MBA-T Datasheet

UpgradeRFQ

ECS-3250SS-400-3B

ECS Inc.In Stock: 1047ECS-3250SS-400-3B Datasheet

DirectRFQ

SXO53C3A171-40.000M

Suntsu Electronics, Inc.In Stock: 2413SXO53C3A171-40.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7C-40.000MBB-T are identified based on strict electrical and mechanical parameter matching. The critical parameters determining substitution eligibility are: Frequency (40 MHz), Output Type (CMOS), Supply Voltage (3.3V), Function (Enable/Disable), Package Type (4-SMD, No Lead), Physical Dimensions (5.00mm x 3.20mm), and Mounting Type (Surface Mount). All substitute parts must maintain these core specifications to ensure functional compatibility within the original circuit design.

Frequency Stability (±50ppm or better), Operating Temperature Range (-10°C ~ 70°C), Current Supply specifications, and compliance certifications (RoHS, REACH, MSL) are secondary parameters that may vary within acceptable tolerances. Parts with improved frequency stability or lower current consumption represent functional upgrades while maintaining full backward compatibility.

Parameter Comparison

Engineering Selection Recommendations

7C-40.000MBA-T (TXC CORPORATION): This part offers improved frequency stability at ±25ppm compared to the main part's ±50ppm specification, while maintaining identical electrical and mechanical parameters. However, this part is listed as Discontinued at DiGi Electronics, limiting long-term availability for production designs. Selection is appropriate only when enhanced frequency stability is required and supply chain continuity is not a concern.

ECS-3250SS-400-3B (ECS Inc.): This part maintains full electrical compatibility with the 7C-40.000MBB-T while offering reduced maximum supply current (15mA versus 30mA) and a lower seated height (1.15mm versus 1.40mm). Both parts are Active in product status with robust inventory levels. This part is suitable for applications where lower power consumption or reduced PCB clearance is beneficial.

SXO53C3A171-40.000M (Suntsu Electronics, Inc.): This part provides full electrical and mechanical compatibility with identical frequency stability (±50ppm) and seated height (1.40mm). Supply current is specified at 25mA, intermediate between the main part and the ECS alternative. This part is Active in product status with the highest inventory level (2318 units). Selection is appropriate for standard applications requiring maximum supply availability.

All substitute parts maintain RoHS compliance and REACH unaffected status, ensuring regulatory alignment with the main part.

Frequently Asked Questions (FAQ)

Q: Can the 7C-40.000MBA-T be used as a direct replacement for the 7C-40.000MBB-T?

A: Yes, the 7C-40.000MBA-T is electrically and mechanically compatible with the 7C-40.000MBB-T. Both parts share identical frequency (40 MHz), output type (CMOS), supply voltage (3.3V), function (Enable/Disable), package type (4-SMD, No Lead), and physical dimensions (5.00mm x 3.20mm). The 7C-40.000MBA-T offers superior frequency stability (±25ppm versus ±50ppm). However, this part is discontinued at DiGi Electronics, which may impact long-term supply availability.

Q: What is the difference between the ECS-3250SS-400-3B and the 7C-40.000MBB-T?

A: The ECS-3250SS-400-3B and 7C-40.000MBB-T are functionally equivalent across all critical parameters: frequency, output type, supply voltage, function, package, and dimensions. The ECS part offers two advantages: lower maximum supply current (15mA versus 30mA) and reduced seated height (1.15mm versus 1.40mm). Both parts are Active in product status. The ECS part is suitable for applications where power efficiency or PCB space constraints are considerations.

Q: Are all substitute parts available in the same packaging format?

A: No. The 7C-40.000MBB-T is supplied in Tape & Reel (TR) packaging. The 7C-40.000MBA-T is supplied in Cut Tape (CT) format, and the SXO53C3A171-40.000M is supplied in Bulk packaging. The ECS-3250SS-400-3B is supplied in Tape & Reel (TR), matching the main part's packaging. Packaging format selection depends on production volume and assembly process requirements.

Q: Do all substitute parts meet the same compliance standards?

A: The 7C-40.000MBB-T, 7C-40.000MBA-T, and ECS-3250SS-400-3B are all RoHS Compliant with MSL 1 (Unlimited). The SXO53C3A171-40.000M is ROHS3 Compliant with MSL not specified in the provided data. All parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Which substitute part offers the best long-term availability?

A: The SXO53C3A171-40.000M (Suntsu Electronics, Inc.) offers the highest inventory level at 2318 units and is listed as Active in product status. The ECS-3250SS-400-3B is also Active with 977 units in stock. The 7C-40.000MBA-T is discontinued at DiGi Electronics, limiting future availability. For applications requiring long-term supply security, the Suntsu or ECS parts are preferred.

Q: Can the substitute parts be used interchangeably in the same PCB design?

A: Yes, all substitute parts share identical electrical specifications (frequency, output type, supply voltage, function) and mechanical dimensions (5.00mm x 3.20mm, 4-SMD No Lead package). The ECS-3250SS-400-3B has a lower seated height (1.15mm versus 1.40mm), which may require PCB clearance verification in designs with tight vertical constraints. All parts are Surface Mount compatible with standard SMD assembly processes.