CTS-Frequency Controls 416F26033CDT 26 MHz Crystal Equivalent & Substitute Parts

Part Overview

The CTS-Frequency Controls 416F26033CDT is a 26 MHz fundamental mode crystal oscillator in a 4-SMD, No Lead surface mount package. This component is discontinued at DiGi Electronics but remains available through inventory channels. The 26 MHz frequency with ±30ppm stability and 18pF load capacitance serves applications requiring precise timing in communication, industrial, and consumer electronics. Due to its discontinued status, identifying equivalent and substitute parts ensures design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Frequency	26 MHz
Frequency Stability	±30ppm
Load Capacitance	18pF
ESR (Equivalent Series Resistance)	120 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-20°C to 70°C
Package Type	4-SMD, No Lead
Physical Dimensions	0.063" L × 0.047" W (1.60mm × 1.20mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 416F26033CDT is determined by the following critical parameters:

Frequency Match: 26 MHz (exact)
Frequency Stability: ±30ppm (exact)
Operating Mode: Fundamental
Package Type: 4-SMD, No Lead
Physical Dimensions: 1.60mm × 1.20mm footprint
Operating Temperature Range: -20°C to 70°C minimum
Load Capacitance: 18pF (primary specification)
ESR: 120 Ohms (primary specification)

Substitute parts are grouped into two categories:

Parametric Equivalent: Parts with identical electrical and mechanical specifications, differing only in packaging format or product status.

Similar Substitute: Parts meeting core frequency, stability, and package requirements but with minor variations in load capacitance or ESR within acceptable design tolerances.

Parameter Comparison

Parameter	416F26033CDT (Main)	416F26033CDR (Parametric Equivalent)	8Q-26.000MAAI-T (Similar Substitute)
Manufacturer	CTS-Frequency Controls	CTS-Frequency Controls	FTS
Frequency	26 MHz	26 MHz	26 MHz
Frequency Stability	±30ppm	±30ppm	±30ppm
Load Capacitance	18pF	18pF	16pF
ESR	120 Ohms	120 Ohms	100 Ohms
Operating Mode	Fundamental	Fundamental	Fundamental
Operating Temperature	-20°C to 70°C	-20°C to 70°C	-20°C to 70°C
Package / Case	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Physical Dimensions	1.60mm × 1.20mm	1.60mm × 1.20mm	1.60mm × 1.20mm
Height - Seated (Max)	0.018" (0.45mm)	0.018" (0.45mm)	0.016" (0.40mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics	Active	Active

Engineering Selection Recommendations

416F26033CDR (Parametric Equivalent - Recommended Primary Substitute)

The 416F26033CDR is the direct parametric equivalent of the 416F26033CDT. It maintains identical electrical specifications (26 MHz, ±30ppm, 18pF load capacitance, 120 Ohms ESR) and mechanical compatibility. The primary difference is packaging format (Tape & Reel vs. Cut Tape) and active product status. This part is ROHS3 compliant and carries unlimited moisture sensitivity rating. Selection of this part eliminates design re-qualification requirements.

8Q-26.000MAAI-T (Similar Substitute - Secondary Option)

The FTS 8Q-26.000MAAI-T provides functional substitution with minor parameter variations. Load capacitance is 16pF (versus 18pF) and ESR is 100 Ohms (versus 120 Ohms). These differences may require circuit tuning adjustments in oscillator designs with tight frequency tolerance requirements. The part maintains identical frequency (26 MHz), stability (±30ppm), operating temperature range, and physical footprint. RoHS compliance is confirmed. This option is suitable when 416F26033CDR availability is constrained and circuit design permits load capacitance and ESR variation.

Frequently Asked Questions (FAQ)

Q: Can the 416F26033CDR directly replace the 416F26033CDT without circuit modification?

A: Yes. The 416F26033CDR is a parametric equivalent with identical electrical and mechanical specifications. No circuit modification is required. The difference is packaging format and product status.

Q: What are the implications of using the 8Q-26.000MAAI-T substitute?

A: The 8Q-26.000MAAI-T has 2pF lower load capacitance (16pF vs. 18pF) and 20 Ohms lower ESR (100 Ohms vs. 120 Ohms). These variations may shift oscillator frequency slightly and affect startup characteristics. Circuit validation is necessary if your design operates at the frequency tolerance limits.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 416F26033CDR is ROHS3 compliant. The 8Q-26.000MAAI-T is RoHS compliant. Both meet environmental regulatory requirements.

Q: Do the substitute parts have the same moisture sensitivity rating?

A: Yes. Both the 416F26033CDR and 8Q-26.000MAAI-T carry MSL 1 (Unlimited) rating, matching the original part.

Q: What is the physical footprint compatibility?

A: All three parts (416F26033CDT, 416F26033CDR, and 8Q-26.000MAAI-T) use identical 4-SMD, No Lead packages with 1.60mm × 1.20mm footprints. PCB layout compatibility is maintained across all options.

Q: Which substitute should I select for new designs?

A: For new designs, the 416F26033CDR is the recommended choice due to parametric equivalence and active product status. The 8Q-26.000MAAI-T is suitable as a secondary option if supply constraints exist and circuit design permits minor load capacitance and ESR variation.

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