38.4 MHz Crystal 10pF SMD (Geyer Electronic America 12.85606)

Part Overview

The Geyer Electronic America 12.85606 is a 38.4 MHz fundamental mode crystal oscillator in 4-SMD, No Lead surface mount package. This component is designed for applications requiring precise frequency reference at 38.4 MHz with 10pF load capacitance. The part is Active status and widely used in telecommunications, industrial control, and consumer electronics. Equivalent substitute parts may be required due to inventory availability, supply chain considerations, or design flexibility across manufacturing partners.

Substiute Parts

12.85606

Geyer Electronic America, Inc.In Stock: 146112.85606 Datasheet

Current PartRFQ

ECS-384-10-37B2-CWN-TR

ECS Inc.In Stock: 6961ECS-384-10-37B2-CWN-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The ECS Inc. ECS-384-10-37B2-CWN-TR qualifies as a parametric equivalent to the Geyer Electronic America 12.85606 based on the following critical substitution criteria:

• Identical frequency: 38.4 MHz
• Matching load capacitance: 10pF
• Identical ESR: 50 Ohms
• Identical operating mode: Fundamental
• Identical operating temperature range: -40°C to 85°C
• Identical package type: 4-SMD, No Lead
• Identical physical dimensions: 0.079" L x 0.063" W (2.00mm x 1.60mm)
• Identical RoHS compliance: ROHS3 Compliant
• Identical MSL rating: 1 (Unlimited)

Both parts meet the electrical and mechanical requirements for direct substitution in applications requiring 38.4 MHz crystal oscillators with 10pF load capacitance in surface mount configuration.

Parameter Comparison

Engineering Selection Recommendations

Both the Geyer Electronic America 12.85606 and ECS Inc. ECS-384-10-37B2-CWN-TR are Active status components with ROHS3 compliance and MSL 1 rating, indicating full environmental compliance and unlimited shelf life under standard storage conditions. The parts are electrically and mechanically interchangeable for 38.4 MHz crystal oscillator applications requiring 10pF load capacitance in 4-SMD, No Lead surface mount packages. Selection between these parts may be based on inventory availability, supply chain logistics, or design flexibility requirements. The maximum seated height difference of 0.002" (0.05mm) is within typical PCB assembly tolerances and does not impact circuit performance or board layout.

Frequently Asked Questions (FAQ)

Q: Can the ECS ECS-384-10-37B2-CWN-TR directly replace the Geyer 12.85606 in existing designs?

A: Yes. Both parts share identical frequency, load capacitance, ESR, operating mode, temperature range, and package dimensions. The 0.002" height difference is negligible for standard PCB assembly processes.

Q: What are the critical parameters for substitution between these 38.4 MHz crystals?

A: Frequency (38.4 MHz), load capacitance (10pF), ESR (50 Ohms), operating mode (Fundamental), temperature range (-40°C to 85°C), and package type (4-SMD, No Lead) must remain constant for direct substitution.

Q: Are there differences in frequency stability between these parts?

A: The Geyer part specifies ±10ppm stability with ±15ppm tolerance, while the ECS part specifies ±15ppm stability with ±10ppm tolerance. Both meet the frequency accuracy requirements for standard 38.4 MHz applications.

Q: Do both parts have identical moisture sensitivity ratings?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and Active status. The ECS part carries additional REACH Unaffected designation. No compliance barriers exist for substitution.