8Z26000021 26 MHz Crystal Equivalent & Substitute Parts

Part Overview

The 8Z26000021 is a 26 MHz fundamental mode quartz crystal manufactured by TXC CORPORATION, designed for surface mount applications in 4-SMD, No Lead package configuration. This crystal operates at 26.0000 MHz with ±10ppm frequency stability and 8pF load capacitance, suitable for timing and frequency control applications requiring precise oscillation. The part is currently in active production status with RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory availability, supply chain considerations, or design flexibility needs.

Substiute Parts

8Z26000021

TXC CORPORATIONIn Stock: 8938Z26000021 Datasheet

Current PartRFQ

QT252S-26.000METV-T

QSTIn Stock: 1402QT252S-26.000METV-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 8Z26000021 are qualified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Critical Matching Parameters:

• Frequency: 26 MHz (exact match required)
• Frequency Stability: ±10ppm (exact match required)
• Load Capacitance: 8pF (exact match required)
• ESR: 100 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -30°C to 85°C (exact match required)
• Package Configuration: 4-SMD, No Lead (exact match required)
• Physical Dimensions: 2.50mm x 2.00mm x 0.55mm maximum height (exact match required)

The QT252S-26.000METV-T from QST meets all critical electrical and mechanical parameters, making it a direct parametric equivalent. Both parts share identical frequency, stability, load capacitance, ESR, operating mode, temperature range, and package specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 8Z26000021 (TXC CORPORATION)

The 8Z26000021 is the original specified component with active production status and RoHS compliance. Current inventory of 810 pieces supports immediate availability for production requirements.

Substitute Part: QT252S-26.000METV-T (QST)

The QT252S-26.000METV-T qualifies as a direct parametric equivalent with all electrical and mechanical specifications matching the primary part. Both parts are active production items with full RoHS compliance (RoHS3 for QST variant). The substitute part offers higher inventory availability at 1340 pieces. Both parts meet HTSUS classification 8541.60.0060 and carry MSL 1 rating.

Selection between these parts should be based on:

• Inventory availability and supply chain requirements
• Packaging format preference (TXC supplied in standard packaging; QST supplied in Tape & Reel format)
• Manufacturer qualification requirements for the end application
• Cost considerations within procurement parameters

Both parts are electrically and mechanically interchangeable for applications requiring 26 MHz ±10ppm crystals with 8pF load capacitance in 4-SMD surface mount packages.

Frequently Asked Questions (FAQ)

Q: Can the QT252S-26.000METV-T be used as a direct replacement for the 8Z26000021?

A: Yes. The QT252S-26.000METV-T meets all critical electrical parameters (26 MHz frequency, ±10ppm stability, 8pF load capacitance, 100 Ohms ESR, fundamental mode operation) and mechanical specifications (4-SMD No Lead package, 2.50mm x 2.00mm x 0.55mm dimensions, -30°C to 85°C operating range). Both parts are active production items with RoHS compliance.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact matching of: frequency (26 MHz), frequency stability (±10ppm), load capacitance (8pF), ESR (100 Ohms), operating mode (fundamental), operating temperature range (-30°C to 85°C), package configuration (4-SMD No Lead), and physical dimensions (2.50mm x 2.00mm x 0.55mm maximum height). All parameters must match precisely.

Q: Are there differences in packaging between these parts?

A: The 8Z26000021 is supplied in standard packaging format. The QT252S-26.000METV-T is supplied in Tape & Reel (TR) format. Both contain identical crystal components with the same electrical and mechanical specifications. Packaging format selection depends on production assembly requirements and handling procedures.

Q: Do both parts have the same RoHS compliance status?

A: Both parts are RoHS compliant. The 8Z26000021 carries RoHS Compliant status, while the QT252S-26.000METV-T carries ROHS3 Compliant status. Both meet current RoHS requirements and are suitable for applications requiring RoHS-compliant components.

Q: What is the MSL rating for these crystals?

A: Both the 8Z26000021 and QT252S-26.000METV-T carry MSL 1 (Unlimited) rating, indicating unlimited shelf life under controlled storage conditions. No special moisture protection measures are required during storage or handling.

Q: Are these parts suitable for the same circuit applications?

A: Yes. Both parts operate at identical frequency (26 MHz) with identical stability (±10ppm) and load capacitance (8pF), making them suitable for the same timing and frequency control circuit applications. Circuit design parameters remain unchanged when substituting between these parts.