9H03200021 32.768 kHz Crystal Equivalent & Substitute Parts

Part Overview

The 9H03200021 is a 32.768 kHz tuning fork crystal manufactured by TXC CORPORATION, designed for real-time clock (RTC) and timing applications requiring fundamental mode operation. This surface mount device operates across the industrial temperature range of -40°C to 85°C with a frequency tolerance of ±20ppm and load capacitance of 7pF. The part is RoHS Compliant with MSL 1 rating, indicating unlimited moisture sensitivity protection. Alternative models become necessary when specific load capacitance requirements differ, package size constraints exist, or alternative manufacturers are preferred for supply chain optimization.

Key Parameters

Parameter	Value	Unit
Frequency	32.768	kHz
Frequency Tolerance	±20	ppm
Load Capacitance	7	pF
ESR (Equivalent Series Resistance)	70	kOhms
Operating Mode	Fundamental	-
Operating Temperature Range	-40 to 85	°C
Mounting Type	Surface Mount	-
Package / Case	2-SMD, No Lead	-
Size / Dimension	3.20 x 1.50	mm
Height - Seated (Max)	0.85	mm
RoHS Status	RoHS Compliant	-
MSL Rating	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the 9H03200021 is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

Frequency: 32.768 kHz (all substitutes must match exactly)
Frequency Tolerance: ±20ppm (all substitutes must match exactly)
Operating Mode: Fundamental (all substitutes must match exactly)
Operating Temperature Range: -40°C to 85°C (all substitutes must match exactly)
Mounting Type: Surface Mount (all substitutes must match exactly)
Package / Case: 2-SMD, No Lead (all substitutes must match exactly)

Variable Parameters Affecting Substitution:

Load Capacitance: 6pF, 7pF, or 9pF (circuit design determines acceptable range)
ESR: 70 kOhms or 90 kOhms (circuit impedance requirements determine acceptability)
Physical Dimensions: 3.20 x 1.50 mm (9HT10 series), 2.00 x 1.20 mm (9HT11 series), or 1.60 x 1.00 mm (9HT12 series) (PCB layout constraints determine acceptability)
Height: 0.85 mm (9HT10 series), 0.60 mm (9HT11 series), or 0.50 mm (9HT12 series) (clearance requirements determine acceptability)

Substitutes are grouped into three categories: Similar Manufacturer Parts (same series, different load capacitance or ESR), Parametric Equivalents (different manufacturer, identical electrical specifications), and Direct Equivalents (different manufacturer, identical specifications including package dimensions).

Parameter Comparison

Part Number	Manufacturer	Series	Load Capacitance (pF)	ESR (kOhms)	Size (mm)	Height (mm)	Packaging	Inventory (Pcs)
9H03200021	TXC CORPORATION	9HT10	7	70	3.20 x 1.50	0.85	-	845
9HT10-32.768KDZB-T	FTS	9HT10	6	70	3.20 x 1.50	0.85	Tape & Reel (TR)	3930
9HT10-32.768KDZC-T	TXC CORPORATION	9HT10	9	70	3.20 x 1.50	0.85	Tape & Reel (TR)	11549
9HT10-32.768KDZY-T	FTS	9HT10	7	70	3.20 x 1.50	0.85	Tape & Reel (TR)	2100
9HT11-32.768KDZB-T	TXC CORPORATION	9HT11	6	90	2.00 x 1.20	0.60	Tape & Reel (TR)	18661
9HT11-32.768KDZC-T	TXC CORPORATION	9HT11	9	90	2.00 x 1.20	0.60	Tape & Reel (TR)	8446
9HT11-32.768KDZY-T	TXC CORPORATION	9HT11	7	90	2.00 x 1.20	0.60	Tape & Reel (TR)	21906
9HT12-32.768KDZY-T	TXC CORPORATION	9HT12	7	90	1.60 x 1.00	0.50	Tape & Reel (TR)	213566
AH-32.768KDZB-T	TXC CORPORATION	AH	6	70	3.20 x 1.50	0.85	Tape & Reel (TR)	3836
AH-32.768KDZY-T	TXC CORPORATION	AH	7	70	3.20 x 1.50	0.85	Tape & Reel (TR)	2293
CM7V-T1A-LOW-ESR-32.768KHZ-7PF-20-TA-QC	Micro Crystal AG	CM7V	7	70	3.20 x 1.50	0.65	Tape & Reel (TR)	701

Engineering Selection Recommendations

Same Package Footprint (3.20 x 1.50 mm) with 70 kOhms ESR:

The 9HT10-32.768KDZY-T (FTS) provides direct parametric equivalence to the 9H03200021, matching all electrical specifications including 7pF load capacitance and 70 kOhms ESR. This part is suitable for applications where circuit design has been validated for these exact parameters.

The AH-32.768KDZY-T (TXC CORPORATION) offers the same footprint and electrical specifications as the main part with AEC-Q200 automotive qualification and ROHS3 compliance. This part is appropriate for applications requiring automotive-grade reliability.

The CM7V-T1A-LOW-ESR-32.768KHZ-7PF-20-TA-QC (Micro Crystal AG) matches all electrical specifications with identical load capacitance and ESR, offering ROHS3 compliance. The reduced height of 0.65 mm provides additional PCB clearance compared to the 0.85 mm main part.

Same Package Footprint (3.20 x 1.50 mm) with Alternative Load Capacitance:

The 9HT10-32.768KDZB-T (FTS) and 9HT10-32.768KDZC-T (TXC CORPORATION) maintain the same footprint and ESR but offer 6pF and 9pF load capacitance respectively. Selection depends on circuit design requirements for load capacitance matching.

The AH-32.768KDZB-T (TXC CORPORATION) provides 6pF load capacitance with AEC-Q200 qualification and ROHS3 compliance in the same footprint.

Compact Package Alternatives (2.00 x 1.20 mm or 1.60 x 1.00 mm):

The 9HT11 series (9HT11-32.768KDZB-T, 9HT11-32.768KDZC-T, 9HT11-32.768KDZY-T) and 9HT12-32.768KDZY-T offer reduced physical dimensions with 90 kOhms ESR. These parts are suitable only when circuit design accommodates the higher ESR and when PCB layout constraints require smaller footprints. The 9HT12 series provides the most compact option with 1.60 x 1.00 mm dimensions and 0.50 mm height.

Compliance Considerations:

All listed substitutes maintain RoHS compliance. The AH series and CM7V series provide enhanced compliance certifications (ROHS3 and AEC-Q200 for AH series). Selection should account for end-application compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 9H03200021 with a part having different load capacitance?

A: Load capacitance substitution is determined by circuit design requirements. The 9H03200021 specifies 7pF load capacitance. Parts with 6pF or 9pF load capacitance (such as 9HT10-32.768KDZB-T or 9HT10-32.768KDZC-T) are electrically different and require circuit validation before substitution. The crystal frequency accuracy depends on matching the load capacitance specified in the circuit design.

Q: What is the difference between the 9HT10, 9HT11, and 9HT12 series?

A: These series differ in physical dimensions and ESR. The 9HT10 series measures 3.20 x 1.50 mm with 0.85 mm height and 70 kOhms ESR. The 9HT11 series measures 2.00 x 1.20 mm with 0.60 mm height and 90 kOhms ESR. The 9HT12 series measures 1.60 x 1.00 mm with 0.50 mm height and 90 kOhms ESR. Selection depends on PCB layout constraints and circuit impedance requirements.

Q: Is the 9HT10-32.768KDZY-T (FTS) a direct replacement for the 9H03200021?

A: The 9HT10-32.768KDZY-T matches all electrical parameters of the 9H03200021: 32.768 kHz frequency, ±20ppm tolerance, 7pF load capacitance, 70 kOhms ESR, and identical package dimensions. The primary difference is the manufacturer (FTS versus TXC CORPORATION) and packaging format (Tape & Reel). This part is a parametric equivalent suitable for direct substitution when supply constraints require alternative sourcing.

Q: Can I use the AH-32.768KDZY-T instead of the 9H03200021?

A: The AH-32.768KDZY-T provides identical electrical specifications and package dimensions to the 9H03200021. The AH series includes AEC-Q200 automotive qualification and ROHS3 compliance, making it suitable for applications requiring enhanced reliability certifications. This part is a direct substitute when automotive-grade qualification is required or preferred.

Q: What does ESR mean and why does it matter for crystal substitution?

A: ESR (Equivalent Series Resistance) represents the internal resistance of the crystal at the operating frequency. The 9H03200021 specifies 70 kOhms ESR. Parts with different ESR values (such as 90 kOhms in the 9HT11 and 9HT12 series) affect circuit performance and must be validated by circuit design before substitution. Higher ESR may impact oscillator startup characteristics and frequency stability.

Q: Are all listed substitutes RoHS compliant?

A: All listed substitutes maintain RoHS compliance. The AH series and CM7V series provide enhanced ROHS3 compliance certification. Selection should account for end-application compliance requirements and regional regulations.

Q: What is the significance of the 2-SMD, No Lead package designation?

A: The 2-SMD, No Lead package indicates a surface mount crystal with two solder pads and no through-hole leads. All listed substitutes use this identical package type, ensuring compatibility with standard SMD assembly processes and PCB designs. Package compatibility is maintained across all substitutes listed in this reference.

Q: Can I substitute the 9H03200021 with the CM7V-T1A-LOW-ESR-32.768KHZ-7PF-20-TA-QC?

A: The CM7V-T1A-LOW-ESR-32.768KHZ-7PF-20-TA-QC matches all electrical specifications of the 9H03200021 with identical frequency, tolerance, load capacitance, and ESR. The primary difference is the reduced height of 0.65 mm compared to 0.85 mm, providing additional PCB clearance. This part is a direct substitute when supply constraints require alternative sourcing or when reduced height is beneficial for PCB design.

Q: Why would I choose a smaller package like the 9HT12 series?

A: The 9HT12 series offers the most compact dimensions (1.60 x 1.00 mm) and lowest height (0.50 mm), suitable for space-constrained PCB designs. However, the 9HT12 series specifies 90 kOhms ESR compared to the 70 kOhms ESR of the 9H03200021. Selection requires circuit validation to confirm compatibility with the higher ESR specification.

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