416F40033CDT Crystal Oscillator - Equivalent & Substitute Parts

Part Overview

The 416F40033CDT is a 40 MHz fundamental mode crystal oscillator manufactured by CTS-Frequency Controls, designed for surface mount applications requiring precise frequency stability. This component is discontinued at DiGi Electronics, necessitating identification of equivalent substitute parts for ongoing procurement and design continuity. The part operates across the industrial temperature range of -20°C to 70°C with ±30ppm frequency stability, making it suitable for timing and clock generation applications in embedded systems and consumer electronics.

Key Parameters

Parameter	Value
Frequency	40 MHz
Frequency Stability	±30ppm
Load Capacitance	18pF
ESR (Equivalent Series Resistance)	60 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-20°C to 70°C
Package / Case	4-SMD, No Lead
Size / Dimension	0.063" L x 0.047" W (1.60mm x 1.20mm)
Height - Seated (Max)	0.018" (0.45mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

The 416F40033CDR qualifies as a parametric equivalent to the 416F40033CDT based on identical electrical and mechanical specifications. Substitution is valid when the following criteria are met:

Frequency: 40 MHz (exact match)
Frequency Stability: ±30ppm (exact match)
Load Capacitance: 18pF (exact match)
ESR: 60 Ohms (exact match)
Operating Mode: Fundamental (exact match)
Operating Temperature Range: -20°C to 70°C (exact match)
Package / Case: 4-SMD, No Lead (exact match)
Physical Dimensions: 0.063" L x 0.047" W, 0.018" max height (exact match)
RoHS3 Compliance: Both parts meet ROHS3 requirements
MSL Rating: Both parts rated MSL 1 (Unlimited)

The primary distinction between these parts is packaging format and product status. The 416F40033CDR is supplied in Tape & Reel (TR) format and maintains Active product status, whereas the 416F40033CDT is discontinued.

Parameter Comparison

Parameter	416F40033CDT (Main Part)	416F40033CDR (Substitute)
Manufacturer	CTS-Frequency Controls	CTS-Frequency Controls
Series	416	416
Frequency	40 MHz	40 MHz
Frequency Stability	±30ppm	±30ppm
Frequency Tolerance	±30ppm	±30ppm
Load Capacitance	18pF	18pF
ESR	60 Ohms	60 Ohms
Operating Mode	Fundamental	Fundamental
Operating Temperature	-20°C to 70°C	-20°C to 70°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	4-SMD, No Lead	4-SMD, No Lead
Size / Dimension	0.063" L x 0.047" W (1.60mm x 1.20mm)	0.063" L x 0.047" W (1.60mm x 1.20mm)
Height - Seated (Max)	0.018" (0.45mm)	0.018" (0.45mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics	Active
Packaging Format	Standard	Tape & Reel (TR)

Engineering Selection Recommendations

The 416F40033CDR is a direct substitute for the 416F40033CDT in all electrical and mechanical aspects. Selection of the 416F40033CDR is supported by:

Identical electrical performance across all specified parameters
Identical physical footprint and mounting characteristics
Active product status ensuring continued availability and supply chain reliability
ROHS3 compliance and REACH unaffected status matching the original part
MSL 1 rating eliminating moisture sensitivity concerns for standard handling and storage

The transition from 416F40033CDT to 416F40033CDR requires no circuit redesign, PCB layout modification, or application firmware changes. Tape & Reel packaging of the 416F40033CDR is standard for production volume applications and does not affect component performance or reliability.

Frequently Asked Questions (FAQ)

Q: Can the 416F40033CDR be used as a direct replacement for the 416F40033CDT?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including frequency, stability, load capacitance, ESR, operating temperature range, and physical dimensions. No circuit modifications are required.

Q: What is the difference between the 416F40033CDT and 416F40033CDR?

A: The primary differences are product status and packaging format. The 416F40033CDT is discontinued, while the 416F40033CDR maintains Active status. The 416F40033CDR is supplied in Tape & Reel format, which is standard for production applications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL 1 ratings. Regulatory and environmental compliance is equivalent.

Q: Does the Tape & Reel packaging of the 416F40033CDR affect component performance?

A: No. Tape & Reel packaging is a distribution format only and does not affect electrical performance, reliability, or operating characteristics of the crystal oscillator.

Q: What are the critical parameters for substitution of 40 MHz crystals in this series?

A: Frequency (40 MHz), frequency stability (±30ppm), load capacitance (18pF), ESR (60 Ohms), operating mode (Fundamental), operating temperature range (-20°C to 70°C), and package type (4-SMD, No Lead) must all match for valid substitution.

Q: Is the 416F40033CDR suitable for new designs?

A: Yes. The 416F40033CDR is an Active product with full availability and is appropriate for both new designs and replacement applications.

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