9HT12-32.768KBZC-T Equivalent & Substitute Parts

Part Overview

The 9HT12-32.768KBZC-T is a 32.768 kHz tuning fork crystal manufactured by TXC CORPORATION, designed for surface mount applications requiring precise frequency reference in timing and real-time clock circuits. This part is classified as Active product status with full RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent frequency, tolerance, operating temperature range, and package specifications are maintained while allowing variation in load capacitance and related electrical characteristics within acceptable design parameters.

Substiute Parts

9HT12-32.768KBZC-T

TXC CORPORATIONIn Stock: 44229HT12-32.768KBZC-T Datasheet

Current PartRFQ

9HT12-32.768KBZY-T

TXC CORPORATIONIn Stock: 58949HT12-32.768KBZY-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 9HT12-32.768KBZC-T is determined by strict equivalence in the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 32.768 kHz (exact match required)
• Frequency Tolerance: ±50 ppm (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match required)
• Package / Case: 2-SMD, No Lead (exact match required)
• Size / Dimension: 1.60mm x 1.00mm (exact match required)
• Mounting Type: Surface Mount (exact match required)
• ESR: 90 kOhms (exact match required)
• Manufacturer: TXC CORPORATION (exact match required)
• Series: 9HT12 (exact match required)

Allowable Variation Parameter:

• Load Capacitance: Variation permitted within the 9HT12 series design envelope

The substitute part 9HT12-32.768KBZY-T maintains all mandatory parameters while differing only in load capacitance specification (7 pF versus 9 pF). This variation is permissible because load capacitance selection is application-dependent and determined by circuit design requirements rather than crystal manufacturing capability.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (9HT12-32.768KBZC-T): The 9HT12-32.768KBZC-T is the specified component for applications requiring 9 pF load capacitance. This part maintains Active product status with full RoHS compliance and MSL 1 rating, indicating no moisture sensitivity constraints during storage and handling. The part is available in quantity (4407 units in stock) and is suitable for immediate deployment in production environments.

Substitute Part Selection (9HT12-32.768KBZY-T): The 9HT12-32.768KBZY-T serves as a direct substitute when circuit design specifications require 7 pF load capacitance instead of 9 pF. This part is also Active status with identical RoHS compliance and MSL 1 rating. Higher inventory availability (5872 units in stock) may provide supply chain advantages. Selection between these two parts is determined solely by the load capacitance requirement of the application circuit, not by performance or reliability differences.

Compliance and Regulatory Status: Both parts carry identical regulatory certifications: RoHS Compliant, REACH Unaffected, and ECCN EAR99 classification. Both are classified under HTSUS code 8541.60.0010. No compliance-based restrictions apply to substitution between these parts.

Frequently Asked Questions (FAQ)

Q: Can 9HT12-32.768KBZY-T replace 9HT12-32.768KBZC-T in any application?

A: Substitution is valid only when the application circuit is designed for 7 pF load capacitance. The load capacitance parameter is application-specific and determined by the oscillator circuit design. If the original design specifies 9 pF load capacitance, the 7 pF variant may not operate within specified frequency tolerance. Consult circuit design documentation to confirm load capacitance requirements before substitution.

Q: What is the significance of load capacitance in crystal selection?

A: Load capacitance is the capacitive load that the crystal oscillator circuit presents to the crystal element. It directly affects the crystal's operating frequency. A crystal specified for 9 pF load capacitance will oscillate at its nominal frequency when connected to a circuit with 9 pF load capacitance. Using a crystal with different load capacitance specification in a circuit designed for different capacitance will result in frequency deviation outside the ±50 ppm tolerance specification.

Q: Are there any physical or mechanical differences between these parts?

A: No. Both parts share identical physical dimensions (1.60mm x 1.00mm), maximum seated height (0.50mm), and package configuration (2-SMD, No Lead). They are mechanically interchangeable at the PCB level. Differences exist only in electrical load capacitance specification.

Q: What is the operating temperature range for both parts?

A: Both the 9HT12-32.768KBZC-T and 9HT12-32.768KBZY-T operate across the identical temperature range of -40°C to 85°C. No temperature-related restrictions apply to substitution.

Q: Do both parts have the same frequency tolerance?

A: Yes. Both parts maintain ±50 ppm frequency tolerance across the full operating temperature range. Frequency tolerance is independent of load capacitance specification in the 9HT12 series.

Q: What does MSL 1 (Unlimited) mean for handling and storage?

A: MSL 1 indicates Moisture Sensitivity Level 1, which means unlimited shelf life without moisture control requirements. Both parts can be stored and handled without desiccant packaging or humidity-controlled environments. This classification applies equally to both the main part and substitute part.

Q: Are both parts RoHS compliant?

A: Yes. Both 9HT12-32.768KBZC-T and 9HT12-32.768KBZY-T are RoHS Compliant and REACH Unaffected. They meet all applicable environmental and regulatory requirements for use in RoHS-restricted applications.

Q: What is the ESR specification and does it differ between parts?

A: ESR (Equivalent Series Resistance) is specified at 90 kOhms for both parts. This parameter is identical and does not vary between the main part and substitute part. ESR affects crystal impedance characteristics and is independent of load capacitance.