DSC8121DI5 Equivalent & Substitute Parts

Part Overview

The DSC8121DI5 is a MEMS-based programmable oscillator manufactured by Microchip Technology, operating across the 10 MHz to 170 MHz frequency range. This XO (Standard) oscillator delivers CMOS output with supply voltage compatibility from 2.25V to 3.6V and includes Enable/Disable functionality. The device is housed in a 6-SMD, No Lead package measuring 2.50mm × 2.00mm with a maximum seated height of 0.90mm. The DSC8121DI5 is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the same parametric envelope.

Substiute Parts

DSC8121DI5

Microchip TechnologyIn Stock: 854DSC8121DI5 Datasheet

Current PartRFQ

DSC8121DI2

Microchip TechnologyIn Stock: 57603DSC8121DI2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DSC8121DI5 is determined by strict parametric matching across the following critical criteria:

Mandatory Matching Parameters:

• Manufacturer: Microchip Technology
• Series: DSC8121
• Base Resonator: MEMS
• Type: XO (Standard)
• Programmable Type: Blank (User Must Program)
• Available Frequency Range: 10 MHz ~ 170 MHz
• Output: CMOS
• Voltage - Supply: 2.25V ~ 3.6V
• Function: Enable/Disable
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-SMD, No Lead
• Size / Dimension: 0.098" L x 0.079" W (2.50mm x 2.00mm)
• Height - Seated (Max): 0.035" (0.90mm)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

• Frequency Stability (Total): Variation permitted within design tolerance requirements
• Current - Supply (Max): Variation permitted within power budget constraints

The DSC8121DI2 meets all mandatory matching criteria and is therefore classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the DSC8121DI5 and DSC8121DI2 are Active product status components manufactured by Microchip Technology and maintain full ROHS3 compliance. Selection between these parts is determined by application-specific frequency stability requirements. The DSC8121DI5 provides ±10ppm frequency stability, while the DSC8121DI2 provides ±25ppm frequency stability. Applications requiring tighter frequency tolerance specifications must use the DSC8121DI5. Applications with relaxed frequency stability tolerances may utilize the DSC8121DI2. Both parts are identical in electrical supply characteristics, output type, operating temperature range, and mechanical packaging. Compliance certifications (ROHS3, MSL Level 1, REACH Unaffected, EAR99) are equivalent across both parts.

Frequently Asked Questions (FAQ)

Q: Can DSC8121DI2 be used as a direct replacement for DSC8121DI5?

A: The DSC8121DI2 is a parametric equivalent with identical electrical and mechanical specifications except for frequency stability tolerance. Direct substitution is possible only when the application's frequency stability requirement of ±25ppm is acceptable. If the design requires ±10ppm stability, the DSC8121DI5 must be used.

Q: Are the package dimensions identical between DSC8121DI5 and DSC8121DI2?

A: Yes. Both parts use the 6-SMD, No Lead package with identical dimensions of 0.098" L × 0.079" W (2.50mm × 2.00mm) and maximum seated height of 0.035" (0.90mm). PCB layout and assembly processes are interchangeable.

Q: What is the significance of the "Blank (User Must Program)" designation?

A: Both the DSC8121DI5 and DSC8121DI2 are programmable oscillators supplied in blank configuration. The user must program the desired output frequency within the 10 MHz to 170 MHz range during manufacturing or initial system configuration. Programming capability and frequency range are identical between both parts.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both parts maintain identical compliance status: ROHS3 Compliant, Moisture Sensitivity Level 1 (Unlimited), REACH Unaffected, and ECCN EAR99 classification.

Q: What is the primary technical difference between DSC8121DI5 and DSC8121DI2?

A: The primary difference is frequency stability tolerance. The DSC8121DI5 specifies ±10ppm total frequency stability, while the DSC8121DI2 specifies ±25ppm. All other electrical parameters, including supply voltage (2.25V ~ 3.6V), maximum supply current (35mA), output type (CMOS), and operating temperature range (-40°C ~ 85°C), are identical.