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ASFL1-24.000MHZ-ER-T Equivalent & Substitute Parts
Part Overview
The ASFL1-24.000MHZ-ER-T is a 24 MHz XO (Standard) oscillator manufactured by Abracon LLC. This surface mount crystal oscillator operates at 3.3V with HCMOS and TTL output compatibility, featuring enable/disable functionality. The device is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, ensuring functional interchangeability in circuit applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Frequency | 24 MHz |
| Voltage - Supply | 3.3V |
| Output Type | HCMOS, TTL |
| Function | Enable/Disable |
| Frequency Stability | ±25ppm |
| Operating Temperature Range | -20°C ~ 70°C |
| Package / Case | 4-SMD, No Lead |
| Size / Dimension | 0.197" L x 0.126" W (5.00mm x 3.20mm) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the ASFL1-24.000MHZ-ER-T are identified based on strict alignment of the following critical parameters:
- Frequency: 24 MHz (exact match required)
- Supply Voltage: 3.3V (exact match required)
- Output Configuration: HCMOS, TTL (exact match required)
- Enable/Disable Function: Present (exact match required)
- Frequency Stability: ±25ppm (exact match required)
- Operating Temperature Range: -20°C ~ 70°C (exact match required)
- Package / Case: 4-SMD, No Lead (exact match required)
- Physical Dimensions: 0.197" L x 0.126" W (5.00mm x 3.20mm) (exact match required)
- Mounting Type: Surface Mount (exact match required)
- Compliance: RoHS3 Compliant (exact match required)
The ISM92-3351AH-24.000MHZ meets all substitution criteria and is classified as a manufacturer-recommended equivalent.
Parameter Comparison
| Parameter | ASFL1-24.000MHZ-ER-T (Abracon LLC) | ISM92-3351AH-24.000MHZ (ILSI) |
|---|---|---|
| Frequency | 24 MHz | 24 MHz |
| Voltage - Supply | 3.3V | 3.3V |
| Output Type | HCMOS, TTL | HCMOS, TTL |
| Function | Enable/Disable | Enable/Disable |
| Frequency Stability | ±25ppm | ±25ppm |
| Operating Temperature Range | -20°C ~ 70°C | -20°C ~ 70°C |
| Current - Supply (Max) | 15mA | 40mA |
| Package / Case | 4-SMD, No Lead | 4-SMD, No Lead |
| Size / Dimension | 0.197" L x 0.126" W (5.00mm x 3.20mm) | 0.197" L x 0.126" W (5.00mm x 3.20mm) |
| Height - Seated (Max) | 0.051" (1.30mm) | 0.063" (1.60mm) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | RoHS3 Compliant | RoHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Both the ASFL1-24.000MHZ-ER-T and ISM92-3351AH-24.000MHZ are Active product status devices with RoHS3 compliance and REACH unaffected status. The ISM92-3351AH-24.000MHZ is designated as a manufacturer-recommended substitute. Selection between these parts should account for the documented differences in maximum supply current (15mA versus 40mA) and seated height (1.30mm versus 1.60mm), which may impact power budget and PCB layout constraints in specific applications.
Frequently Asked Questions (FAQ)
Q: Can the ISM92-3351AH-24.000MHZ be used as a direct replacement for the ASFL1-24.000MHZ-ER-T?
A: Yes. Both parts share identical frequency, supply voltage, output type, enable/disable function, frequency stability, operating temperature range, package type, and physical footprint dimensions. Both are RoHS3 compliant and REACH unaffected.
Q: What are the differences between these two parts?
A: The primary differences are maximum supply current (ASFL1: 15mA; ISM92: 40mA) and maximum seated height (ASFL1: 1.30mm; ISM92: 1.60mm). These differences may affect power consumption calculations and PCB clearance requirements.
Q: Are the physical dimensions identical?
A: The length and width dimensions are identical (0.197" L x 0.126" W / 5.00mm x 3.20mm). The maximum seated height differs by 0.30mm (ASFL1: 1.30mm; ISM92: 1.60mm).
Q: Do both parts support the same output configurations?
A: Yes. Both parts provide HCMOS and TTL output compatibility with enable/disable functionality at 3.3V supply voltage.
Q: Are there any compliance or certification differences?
A: No. Both parts are RoHS3 compliant, REACH unaffected, and classified as Active product status.
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