416F27011AST 27 MHz Crystal Equivalent & Substitute Parts

Part Overview

The 416F27011AST is a 27 MHz fundamental mode crystal oscillator in a 4-SMD surface mount package manufactured by CTS-Frequency Controls. This component is designed for applications requiring precise frequency generation at 27 MHz with tight frequency stability of ±10ppm. The part is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing production and maintenance applications.

Substiute Parts

416F27011AST

CTS-Frequency ControlsIn Stock: 959416F27011AST Datasheet

Current PartRFQ

416F27011ASR

CTS-Frequency ControlsIn Stock: 845416F27011ASR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 416F27011AST is determined by strict equivalence across the following critical parameters:

• Frequency: 27 MHz (exact match required)
• Frequency Stability: ±10ppm (exact match required)
• ESR: 120 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)
• Package / Case: 4-SMD, No Lead (exact match required)
• Physical Dimensions: 0.063" L x 0.047" W, 0.018" max height (exact match required)
• Operating Temperature Range: -10°C to 60°C (exact match required)

The 416F27011ASR meets all these criteria and is classified as a parametric equivalent. The primary distinction between the main part and its substitute is packaging configuration and product status.

Parameter Comparison

Engineering Selection Recommendations

The 416F27011ASR is a direct parametric equivalent to the 416F27011AST across all electrical and mechanical specifications. Both parts are manufactured by CTS-Frequency Controls and maintain identical frequency, stability, ESR, package dimensions, and operating characteristics.

The 416F27011ASR is the preferred selection for new designs and ongoing production due to its active product status. The 416F27011AST is discontinued, making the 416F27011ASR the only viable option for component procurement.

Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring compatibility with current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the 416F27011ASR be used as a direct replacement for the 416F27011AST?

A: Yes. Both parts are parametric equivalents with identical electrical specifications (27 MHz, ±10ppm stability, 120 Ohms ESR), operating mode (Fundamental), package type (4-SMD, No Lead), and physical dimensions (0.063" L x 0.047" W, 0.018" max height). No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and packaging configuration. The 416F27011AST is discontinued, while the 416F27011ASR is active. The 416F27011ASR is supplied in Tape & Reel (TR) packaging, which is standard for production quantities.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1 - Unlimited). Both are classified under ECCN EAR99 and HTSUS 8541.60.0060.

Q: What is the operating temperature range for these crystals?

A: Both parts operate across -10°C to 60°C. Frequency stability of ±10ppm is maintained throughout this temperature range.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.063" L x 0.047" W (1.60mm x 1.20mm) with a maximum seated height of 0.018" (0.45mm), ensuring identical PCB footprint and assembly compatibility.