ASCO-6.000MHZ-EK-T Equivalent & Substitute Parts

Part Overview

The ASCO-6.000MHZ-EK-T is a 6 MHz XO (Standard) CMOS oscillator manufactured by Abracon LLC, designed for applications requiring a crystal-based frequency reference with enable/disable functionality. This part operates at 3.3V supply voltage and is packaged in a 4-SMD, No Lead surface mount configuration with dimensions of 1.60mm x 1.20mm.

The ASCO-6.000MHZ-EK-T has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements.

Key Parameters

Parameter	Value
Frequency	6 MHz
Output Type	CMOS
Voltage - Supply	3.3V
Frequency Stability	±30ppm
Operating Temperature Range	-20°C ~ 70°C
Current - Supply (Max)	4.5mA
Package / Case	4-SMD, No Lead
Size / Dimension	1.60mm x 1.20mm
Height - Seated (Max)	0.70mm
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ASCO-6.000MHZ-EK-T are identified based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

Frequency: 6 MHz (exact match required)
Output Type: CMOS (exact match required)
Function: Enable/Disable (exact match required)
Package / Case: 4-SMD, No Lead (exact match required)
Base Resonator: Crystal (exact match required)

Secondary Compatibility Parameters:

Voltage - Supply: 3.3V (preferred for direct replacement)
Frequency Stability: ±30ppm or better
Operating Temperature Range: Must encompass or exceed -20°C ~ 70°C
Current - Supply (Max): Must not exceed application requirements
Mounting Type: Surface Mount (exact match required)
RoHS Status: ROHS3 Compliant (compliance requirement)

Substitute parts are grouped into two categories: parametric equivalents (matching all primary and secondary criteria) and manufacturer-recommended alternatives (meeting primary criteria with acceptable variations in secondary parameters).

Parameter Comparison

Parameter	ASCO-6.000MHZ-EK-T (Main)	ASCO-6.000MHZ-EK-T3 (Parametric Equivalent)	ASCO1-6.000MHZ-EK-T3 (MFR Recommended)	ECS-1633-060-BN-TR (MFR Recommended)
Manufacturer	Abracon LLC	Abracon LLC	Abracon LLC	ECS Inc.
Frequency	6 MHz	6 MHz	6 MHz	6 MHz
Output Type	CMOS	CMOS	CMOS	CMOS
Voltage - Supply	3.3V	3.3V	2.5V	3.3V
Frequency Stability	±30ppm	±30ppm	±30ppm	±50ppm
Operating Temperature	-20°C ~ 70°C	-20°C ~ 70°C	-20°C ~ 70°C	-40°C ~ 85°C
Current - Supply (Max)	4.5mA	4.5mA	4.6mA	6mA
Package / Case	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Size / Dimension	1.60mm x 1.20mm	1.60mm x 1.20mm	1.60mm x 1.20mm	2.00mm x 1.60mm
Height - Seated (Max)	0.70mm	0.70mm	0.70mm	0.90mm
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

ASCO-6.000MHZ-EK-T3 (Abracon LLC) - Parametric Equivalent

This part is the direct parametric equivalent to the obsolete ASCO-6.000MHZ-EK-T. It maintains identical electrical specifications, frequency stability, operating temperature range, and physical dimensions. The part is in active production status with ROHS3 compliance certification. This is the preferred substitute for direct replacement applications where no design modifications are acceptable.

ASCO1-6.000MHZ-EK-T3 (Abracon LLC) - MFR Recommended Alternative

This manufacturer-recommended alternative operates at 2.5V supply voltage instead of 3.3V and provides lower maximum supply current (4.6mA vs. 4.5mA). The part maintains identical frequency, frequency stability, operating temperature range, and physical dimensions. Selection of this part requires verification that the application circuit can operate at 2.5V supply voltage. Active production status and ROHS3 compliance are maintained.

ECS-1633-060-BN-TR (ECS Inc.) - MFR Recommended Alternative

This manufacturer-recommended alternative is supplied in Tape & Reel packaging and exhibits the following parameter variations: frequency stability of ±50ppm (versus ±30ppm), extended operating temperature range of -40°C ~ 85°C, maximum supply current of 6mA, and slightly larger physical dimensions (2.00mm x 1.60mm with 0.90mm height). The part is in active production status with ROHS3 compliance certification. Selection of this part is appropriate for applications where the extended temperature range and relaxed frequency stability are acceptable, and where the increased physical dimensions do not create layout constraints.

Frequently Asked Questions (FAQ)

Q: Can ASCO-6.000MHZ-EK-T3 be used as a direct replacement for ASCO-6.000MHZ-EK-T?

A: Yes. ASCO-6.000MHZ-EK-T3 is a parametric equivalent with identical electrical specifications, frequency stability, operating temperature range, and physical dimensions. No circuit modifications are required.

Q: What is the primary difference between ASCO1-6.000MHZ-EK-T3 and the original part?

A: The ASCO1-6.000MHZ-EK-T3 operates at 2.5V supply voltage compared to the original 3.3V specification. The maximum supply current is also reduced to 4.6mA. All other parameters remain identical. This part requires circuit verification to confirm 2.5V operation is compatible with the application.

Q: Why does ECS-1633-060-BN-TR have different physical dimensions?

A: The ECS-1633-060-BN-TR is a cross-manufacturer alternative from ECS Inc. with slightly larger dimensions (2.00mm x 1.60mm versus 1.60mm x 1.20mm) and increased height (0.90mm versus 0.70mm). Physical layout verification is required to confirm the larger package does not create PCB space constraints.

Q: What is the significance of the ±50ppm frequency stability in ECS-1633-060-BN-TR?

A: The ECS-1633-060-BN-TR specifies ±50ppm frequency stability compared to ±30ppm for the original part. This represents a relaxed tolerance specification. Applications requiring tighter frequency accuracy should verify that ±50ppm stability meets system requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance certification, consistent with the original ASCO-6.000MHZ-EK-T specification.

Q: What is the advantage of the extended operating temperature range in ECS-1633-060-BN-TR?

A: The ECS-1633-060-BN-TR operates across -40°C ~ 85°C compared to -20°C ~ 70°C for the original part. This extended range is beneficial for applications requiring operation in wider environmental temperature conditions. Applications operating within the original -20°C ~ 70°C range do not require this extended specification.

Q: Can packaging format (Tape & Reel vs. standard packaging) affect part selection?

A: Packaging format affects supply chain logistics and handling procedures but does not impact electrical or mechanical compatibility. ECS-1633-060-BN-TR is supplied in Tape & Reel format, which is standard for high-volume production environments. Selection should be based on procurement and assembly process requirements.

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