CTS-Frequency Controls 402F32033CAT 32 MHz Crystal Equivalent & Substitute Parts

Part Overview

The CTS-Frequency Controls 402F32033CAT is a 32 MHz fundamental mode crystal oscillator in a 4-SMD, no-lead surface mount package. This part operates at ±30ppm frequency stability with 10pF load capacitance and 80 Ohms equivalent series resistance. The 402F32033CAT is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing production and design requirements. Alternative CTS-Frequency Controls models from the 402 and 416 series provide compatible electrical and mechanical specifications for direct replacement or application-specific substitution.

Key Parameters

Parameter	402F32033CAT
Frequency	32 MHz
Frequency Stability	±30ppm
Load Capacitance	10pF
ESR (Equivalent Series Resistance)	80 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-20°C to 70°C
Mounting Type	Surface Mount
Package / Case	4-SMD, No Lead
Size / Dimension	0.079" L x 0.063" W (2.00mm x 1.60mm)
Height - Seated (Max)	0.022" (0.55mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the 402F32033CAT are categorized into two groups based on electrical and mechanical compatibility:

Direct Substitutes (Electrical Equivalents): Parts with identical frequency (32 MHz), load capacitance (10pF), ESR (80 Ohms), and package dimensions (0.079" L x 0.063" W, 2.00mm x 1.60mm). These parts differ in frequency stability tolerance and operating temperature range but maintain full mechanical and electrical compatibility with the original design.

Similar Substitutes (Load Capacitance Variants): Parts with identical frequency, ESR, and package dimensions but different load capacitance values (8pF, 9pF, 12pF). These require circuit-level evaluation for load capacitance matching but share the same physical footprint and fundamental operating characteristics.

Series Variants (Smaller Package): Parts from the 416 series with identical electrical specifications but reduced physical dimensions (0.063" L x 0.047" W, 1.60mm x 1.20mm). These provide space-saving alternatives for applications where package size reduction is acceptable.

Parameter Comparison

Part Number	Manufacturer	Series	Frequency	Frequency Stability	Load Capacitance	ESR	Operating Temperature	Package Size (L x W)	Height (Max)	Product Status	Packaging
402F32033CAT	CTS-Frequency Controls	402	32 MHz	±30ppm	10pF	80 Ohms	-20°C to 70°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Discontinued	Bulk
402F32011CAR	CTS-Frequency Controls	402	32 MHz	±10ppm	10pF	80 Ohms	-20°C to 70°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Active	Tape & Reel
402F32012IAR	CTS-Frequency Controls	402	32 MHz	±20ppm	10pF	80 Ohms	-40°C to 85°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Active	Tape & Reel
402F3201XIAR	CTS-Frequency Controls	402	32 MHz	±15ppm	10pF	80 Ohms	-40°C to 85°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Active	Tape & Reel
402F32022IAR	CTS-Frequency Controls	402	32 MHz	±20ppm	10pF	80 Ohms	-40°C to 85°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Active	Tape & Reel
402F320XXCAR	CTS-Frequency Controls	402	32 MHz	±15ppm	10pF	80 Ohms	-20°C to 70°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Active	Tape & Reel
402F32033CJR	CTS-Frequency Controls	402	32 MHz	±30ppm	9pF	80 Ohms	-20°C to 70°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Active	Tape & Reel
402F32033CKR	CTS-Frequency Controls	402	32 MHz	±30ppm	8pF	80 Ohms	-20°C to 70°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Active	Tape & Reel
402F32033CLR	CTS-Frequency Controls	402	32 MHz	±30ppm	12pF	80 Ohms	-20°C to 70°C	0.079" x 0.063" (2.00mm x 1.60mm)	0.022" (0.55mm)	Active	Tape & Reel
416F32033CAR	CTS-Frequency Controls	416	32 MHz	±30ppm	10pF	80 Ohms	-20°C to 70°C	0.063" x 0.047" (1.60mm x 1.20mm)	0.018" (0.45mm)	Active	Tape & Reel
416F32033CKR	CTS-Frequency Controls	416	32 MHz	±30ppm	8pF	80 Ohms	-20°C to 70°C	0.063" x 0.047" (1.60mm x 1.20mm)	0.018" (0.45mm)	Active	Tape & Reel

Engineering Selection Recommendations

For Direct Replacement (Same Operating Temperature Range):

The 402F32011CAR provides tighter frequency stability (±10ppm) while maintaining identical package dimensions and operating temperature range (-20°C to 70°C). This part is active and available in Tape & Reel packaging. The 402F320XXCAR offers ±15ppm stability with the same temperature range and package specifications.

For Extended Temperature Range Applications:

The 402F32012IAR and 402F32022IAR both support -40°C to 85°C operating temperature with 10pF load capacitance and identical package dimensions. These parts are active and suitable for industrial and automotive applications requiring wider temperature operation.

For Load Capacitance Variants:

The 402F32033CJR (9pF), 402F32033CKR (8pF), and 402F32033CLR (12pF) maintain identical frequency, ESR, and package dimensions but require circuit-level load capacitance matching. These parts are active and available in Tape & Reel packaging.

For Space-Constrained Designs:

The 416F32033CAR and 416F32033CKR provide identical electrical specifications with reduced physical dimensions (1.60mm x 1.20mm versus 2.00mm x 1.60mm). These parts are active and suitable for compact PCB layouts where package size reduction is acceptable.

All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance profile.

Frequently Asked Questions (FAQ)

Q: Can 402F32033CAT be directly replaced with 402F32011CAR?

A: Yes. Both parts share identical frequency (32 MHz), load capacitance (10pF), ESR (80 Ohms), and package dimensions (2.00mm x 1.60mm). The 402F32011CAR offers improved frequency stability (±10ppm versus ±30ppm) and is active in production. Operating temperature range is identical (-20°C to 70°C).

Q: What is the difference between 402 and 416 series crystals?

A: The 402 series uses a 2.00mm x 1.60mm package, while the 416 series uses a smaller 1.60mm x 1.20mm package. Electrical specifications (frequency, load capacitance, ESR) remain identical. The 416 series is suitable for space-constrained applications.

Q: Can I use a crystal with different load capacitance (8pF, 9pF, 12pF) instead of 10pF?

A: Load capacitance must match the circuit design. The crystal's load capacitance value is determined by the oscillator circuit's capacitive loading. Using an incorrect load capacitance value will result in frequency deviation and potential circuit instability. Consult your circuit schematic to confirm the required load capacitance before substitution.

Q: What does frequency stability ±30ppm mean, and how does it compare to ±10ppm?

A: Frequency stability (ppm = parts per million) defines the maximum frequency deviation from the nominal 32 MHz value over the operating temperature range. ±30ppm allows ±960 Hz deviation (32,000,000 Hz × 30 / 1,000,000), while ±10ppm allows ±320 Hz deviation. Tighter stability (lower ppm) is required for applications with strict frequency tolerance requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the original 402F32033CAT compliance status.

Q: What is the difference between bulk and Tape & Reel packaging?

A: The original 402F32033CAT is supplied in bulk packaging. Substitute parts are available in Tape & Reel (TR) packaging, which is standard for automated assembly processes. Tape & Reel packaging provides better handling, traceability, and compatibility with pick-and-place equipment.

Q: Can I use 402F32012IAR or 402F32022IAR in place of 402F32033CAT?

A: Yes, both parts are electrically and mechanically compatible. However, they support extended operating temperature range (-40°C to 85°C) compared to the original (-20°C to 70°C). If your application operates only within -20°C to 70°C, either part is suitable. The 402F32012IAR offers ±20ppm stability, while 402F32022IAR also provides ±20ppm stability.

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