DSC1001CI5-100.0000 MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The DSC1001CI5-100.0000 is a 100 MHz MEMS-based crystal oscillator manufactured by Microchip Technology. This CMOS oscillator operates across a 1.8V to 3.3V supply range and includes standby power-down functionality, making it suitable for applications requiring low-power operation with frequency stability of ±10ppm. The device is currently in active production status and carries AEC-Q100 automotive-grade qualification. Substitute parts become necessary when addressing supply chain constraints, inventory availability, or specific packaging requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Frequency	100 MHz
Output Type	CMOS
Supply Voltage Range	1.8V ~ 3.3V
Frequency Stability	±10ppm
Operating Temperature	-40°C ~ 85°C
Base Resonator Type	MEMS
Oscillator Type	XO (Standard)
Power-Down Function	Standby (Power Down)
Package Type	4-VDFN / 4-SMD, No Lead
Physical Dimensions	3.20mm L x 2.50mm W x 0.90mm H (max)
Mounting	Surface Mount
RoHS Compliance	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the DSC1001CI5-100.0000 is determined by strict alignment across the following critical parameters:

Frequency matching at 100 MHz is mandatory. Output type must remain CMOS. Supply voltage range must encompass or match 1.8V ~ 3.3V operation. Frequency stability specification of ±10ppm or better is required. Operating temperature range must cover -40°C ~ 85°C minimum. Base resonator technology must be MEMS. Oscillator classification must be XO (Standard) with integrated standby power-down capability. Physical dimensions and height must be compatible with 3.20mm x 2.50mm x 0.90mm maximum seated height. Mounting type must be surface mount. Package classification must be 4-pin SMD or VDFN variants. RoHS3 compliance and MSL 1 rating are required for environmental and handling compatibility.

The ASEMB-100.000MHZ-LY-T from Abracon LLC meets all substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Parameter	DSC1001CI5-100.0000 (Microchip)	ASEMB-100.000MHZ-LY-T (Abracon)
Frequency	100 MHz	100 MHz
Output Type	CMOS	CMOS
Supply Voltage	1.8V ~ 3.3V	1.8V ~ 3.3V
Frequency Stability	±10ppm	±10ppm
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Base Resonator	MEMS	MEMS
Oscillator Type	XO (Standard)	XO (Standard)
Power-Down Function	Standby (Power Down)	Standby (Power Down)
Package	4-VDFN	4-SMD, No Lead
Dimensions	3.20mm x 2.50mm x 0.90mm (max)	3.20mm x 2.50mm x 0.90mm (max)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	MSL 1 (Unlimited)	MSL 1 (Unlimited)
Current - Supply (Max)	8.7mA	16mA
Current - Supply (Disable)	15µA	15µA

Engineering Selection Recommendations

Both the DSC1001CI5-100.0000 and ASEMB-100.000MHZ-LY-T are active production devices with equivalent electrical specifications across frequency, stability, voltage range, and temperature operating window. Selection between these parts should be based on:

Supply chain availability and lead time requirements. The Abracon ASEMB-100.000MHZ-LY-T currently maintains higher inventory levels (4071 pcs vs. 711 pcs).

Package form factor compatibility. The DSC1001CI5-100.0000 uses 4-VDFN packaging while the ASEMB-100.000MHZ-LY-T uses 4-SMD, No Lead packaging. Both maintain identical physical dimensions and height specifications, ensuring PCB footprint compatibility.

Supply current characteristics. The Microchip device specifies 8.7mA maximum supply current, while the Abracon device specifies 16mA maximum. Applications with strict power budget constraints should prioritize the DSC1001CI5-100.0000. Both devices share identical 15µA disable current specifications.

Compliance requirements. Both parts meet ROHS3 compliance, carry MSL 1 ratings, and maintain REACH Unaffected status. The Microchip device carries AEC-Q100 automotive qualification; this certification is not listed for the Abracon substitute.

Frequently Asked Questions (FAQ)

Q: Can the ASEMB-100.000MHZ-LY-T directly replace the DSC1001CI5-100.0000 on existing PCBs?

A: Yes, both devices maintain identical physical dimensions (3.20mm x 2.50mm x 0.90mm maximum height) and surface mount mounting type. The package variants (4-VDFN vs. 4-SMD, No Lead) are mechanically compatible with standard 4-pin SMD footprints. Verify PCB layout compatibility with your design documentation.

Q: What is the primary difference between these two oscillators?

A: The primary difference is maximum supply current specification. The DSC1001CI5-100.0000 draws 8.7mA maximum, while the ASEMB-100.000MHZ-LY-T draws 16mA maximum. All other electrical parameters—frequency, stability, voltage range, temperature range, and output type—are identical. The Microchip device also carries AEC-Q100 automotive qualification.

Q: Are both parts suitable for automotive applications?

A: The DSC1001CI5-100.0000 carries explicit AEC-Q100 automotive-grade qualification. The ASEMB-100.000MHZ-LY-T does not list this certification. For automotive applications requiring AEC-Q100 compliance, the Microchip device is the specified choice.

Q: What does MSL 1 (Unlimited) mean for handling and storage?

A: MSL 1 rating indicates the component has unlimited shelf life and does not require moisture-controlled storage or baking procedures prior to reflow soldering. Both devices can be stored under standard industrial conditions without special moisture management protocols.

Q: Can I use either part interchangeably in production?

A: Electrical interchangeability is confirmed across all specified parameters. However, supply current differences and automotive qualification status must be evaluated against your specific application requirements. Conduct design validation testing if switching between these parts in production environments.

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