ASEMPC-25.000MHZ-LR-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The ASEMPC-25.000MHZ-LR-T is a 25 MHz MEMS-based XO (Standard) oscillator manufactured by Abracon LLC. This CMOS oscillator operates across a 2.25V to 3.6V supply range with Enable/Disable functionality, housed in a 6-SMD, No Lead surface mount package. The component is Active status and widely used in applications requiring stable frequency generation with low power consumption. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this oscillator category.

Substiute Parts

ASEMPC-25.000MHZ-LR-T

Abracon LLCIn Stock: 905ASEMPC-25.000MHZ-LR-T Datasheet

Current PartRFQ

ASEMPC-25.000MHZ-Z-T

Abracon LLCIn Stock: 2556ASEMPC-25.000MHZ-Z-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ASEMPC-25.000MHZ-LR-T are identified based on strict electrical and mechanical compatibility criteria. The following parameters must remain constant or within acceptable tolerances:

• Frequency: 25 MHz (exact match required)
• Output Type: CMOS (exact match required)
• Supply Voltage Range: 2.25V ~ 3.6V (exact match required)
• Function: Enable/Disable (exact match required)
• Base Resonator: MEMS (exact match required)
• Package Type: 6-SMD, No Lead (exact match required)
• Physical Dimensions: 3.20mm x 2.50mm footprint (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

Parameters that may vary within acceptable engineering tolerances for substitution:

• Frequency Stability: ±25ppm to ±50ppm
• Operating Temperature Range: -40°C ~ 85°C to -55°C ~ 125°C
• Current Supply (Max): 35mA (constant)
• Current Supply (Disable) (Max): 26mA (constant)

Parameter Comparison

Engineering Selection Recommendations

Both the ASEMPC-25.000MHZ-LR-T and ASEMPC-25.000MHZ-Z-T are Active status components manufactured by Abracon LLC within the ASEMP Pure Silicon™ series. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and use.

The primary difference between these parts is the frequency stability specification and operating temperature range. The ASEMPC-25.000MHZ-LR-T provides ±25ppm stability across -40°C to 85°C, while the ASEMPC-25.000MHZ-Z-T provides ±50ppm stability across -55°C to 125°C. Selection between these parts depends on application-specific requirements for frequency accuracy and thermal operating conditions. Both parts are electrically and mechanically interchangeable at the PCB level due to identical package geometry, pinout, and electrical interface specifications.

Frequently Asked Questions (FAQ)

Q: Can ASEMPC-25.000MHZ-Z-T be used as a direct replacement for ASEMPC-25.000MHZ-LR-T?

A: Yes, both parts are mechanically and electrically compatible. The ASEMPC-25.000MHZ-Z-T features a wider operating temperature range (-55°C to 125°C versus -40°C to 85°C) and relaxed frequency stability (±50ppm versus ±25ppm). Applications requiring the tighter frequency stability or narrower temperature range of the LR-T variant should not substitute with the Z-T variant.

Q: What is the difference in frequency stability between these parts?

A: The ASEMPC-25.000MHZ-LR-T maintains ±25ppm frequency stability, while the ASEMPC-25.000MHZ-Z-T maintains ±50ppm. Applications sensitive to frequency drift or requiring precise timing should verify that the ±50ppm specification of the Z-T variant meets system requirements before substitution.

Q: Are the physical packages identical?

A: Yes. Both parts use the same 6-SMD, No Lead package with identical footprint dimensions of 3.20mm length by 2.50mm width and maximum seated height of 0.90mm. PCB layout and reflow profiles remain unchanged between these parts.

Q: What is the operating temperature range for each part?

A: The ASEMPC-25.000MHZ-LR-T operates from -40°C to 85°C. The ASEMPC-25.000MHZ-Z-T operates from -55°C to 125°C. Applications operating outside the -40°C to 85°C range require the Z-T variant.

Q: Do both parts have Enable/Disable functionality?

A: Yes. Both the ASEMPC-25.000MHZ-LR-T and ASEMPC-25.000MHZ-Z-T include Enable/Disable control with identical maximum supply current (35mA) and disable current (26mA) specifications.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL 1 (Unlimited) moisture sensitivity ratings. Regulatory compliance is equivalent between these parts.