TXC CORPORATION 9H03200413 32.768 kHz Crystal Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 9H03200413 is a 32.768 kHz tuning fork crystal designed for real-time clock (RTC) and low-frequency timing applications. This surface-mount device operates at ±20ppm frequency tolerance with 12.5pF load capacitance and 65 kOhms equivalent series resistance (ESR). The component is Active status and RoHS Compliant, suitable for consumer electronics, IoT devices, and industrial timing circuits requiring precise 32.768 kHz reference signals.

Substitute parts are necessary when the original part number becomes unavailable, when alternative packaging formats are required (such as Tape & Reel instead of bulk), or when design flexibility permits selection from multiple qualified manufacturers meeting identical electrical specifications.

Key Parameters

Parameter	Value	Criticality for Substitution
Frequency	32.768 kHz	Critical - Must match exactly
Frequency Tolerance	±20ppm	Critical - Determines timing accuracy
Load Capacitance	12.5pF	Critical - Affects circuit resonance
ESR (Equivalent Series Resistance)	65 kOhms	Critical - Determines oscillation characteristics
Operating Temperature Range	-40°C ~ 85°C	Critical - Application environment requirement
Package / Case	4-SMD, Flat Leads	Critical - PCB footprint compatibility
Mounting Type	Surface Mount	Critical - Assembly process requirement
RoHS Status	RoHS Compliant / ROHS3 Compliant	Important - Regulatory compliance
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Important - Storage and handling

Substitute Part Grouping Explanation

Substitute parts for the 9H03200413 are classified into two groups based on electrical and mechanical compatibility:

Group 1: Parametric Equivalents (Identical Electrical Specifications)

9HT7-32.768KDZF-T (TXC CORPORATION)

This part maintains all critical electrical parameters: 32.768 kHz frequency, ±20ppm tolerance, 12.5pF load capacitance, and 65 kOhms ESR. The primary difference is packaging format (Tape & Reel) and RoHS compliance level (ROHS3 vs. RoHS Compliant). Mechanical dimensions remain identical: 0.264" L x 0.055" W (6.70mm x 1.40mm).

Group 2: Similar Substitutes (Matching Electrical Specifications with Minor Dimensional Variance)

MC-146 32.7680KA-A0:PURE SN (EPSON)
MC-146 32.7680KA-A0:ROHS (EPSON)
MC-146 32.7680KA-A3:PURE SN (EPSON)
MC-146 32.7680KA-A3:ROHS (EPSON)
MC-146 32.7680KA-A5:PURE SN (EPSON)
MC-146 32.7680KA-A5:ROHS (EPSON)

These EPSON MC-146 series parts maintain all critical electrical parameters (32.768 kHz, ±20ppm, 12.5pF, 65 kOhms, -40°C ~ 85°C). Width dimension differs slightly: 0.264" L x 0.059" W (6.70mm x 1.50mm) versus the original 0.055" W (1.40mm). Height remains 0.055" (1.40mm). All variants are ROHS3 Compliant and REACH Affected.

Group 3: Load Capacitance Variants (Different Electrical Specification)

MC-146 32.7680KA-AC0:ROHS (EPSON)
MC-146 32.7680KA-AC0:PURE SN (EPSON)
MC-146 32.7680KA-AC3:ROHS (EPSON)

These parts operate at 32.768 kHz with ±20ppm tolerance but feature 9pF load capacitance instead of 12.5pF. ESR remains 65 kOhms. These are not direct substitutes for the 9H03200413 unless circuit design permits load capacitance adjustment.

Parameter Comparison

Part Number	Manufacturer	Frequency	Tolerance	Load Capacitance	ESR	Temp Range	Package	Width (mm)	RoHS Status	Inventory (Pcs)
9H03200413	TXC	32.768 kHz	±20ppm	12.5pF	65 kOhms	-40~85°C	4-SMD, Flat	1.40	RoHS Compliant	30300
9HT7-32.768KDZF-T	TXC	32.768 kHz	±20ppm	12.5pF	65 kOhms	-40~85°C	4-SMD, Flat	1.40	ROHS3 Compliant	64953
MC-146 32.7680KA-A0:PURE SN	EPSON	32.768 kHz	±20ppm	12.5pF	65 kOhms	-40~85°C	4-SMD, Flat	1.50	ROHS3 Compliant	2644
MC-146 32.7680KA-A0:ROHS	EPSON	32.768 kHz	±20ppm	12.5pF	65 kOhms	-40~85°C	4-SMD, Flat	1.50	ROHS3 Compliant	66791
MC-146 32.7680KA-A3:PURE SN	EPSON	32.768 kHz	±20ppm	12.5pF	65 kOhms	-40~85°C	4-SMD, Flat	1.50	ROHS3 Compliant	1217
MC-146 32.7680KA-A3:ROHS	EPSON	32.768 kHz	±20ppm	12.5pF	65 kOhms	-40~85°C	4-SMD, Flat	1.50	ROHS3 Compliant	6654
MC-146 32.7680KA-A5:PURE SN	EPSON	32.768 kHz	±20ppm	12.5pF	65 kOhms	-40~85°C	4-SMD, Flat	1.50	ROHS3 Compliant	25050
MC-146 32.7680KA-A5:ROHS	EPSON	32.768 kHz	±20ppm	12.5pF	65 kOhms	-40~85°C	4-SMD, Flat	1.50	ROHS3 Compliant	10904

Engineering Selection Recommendations

Primary Substitute: 9HT7-32.768KDZF-T (TXC CORPORATION)

The 9HT7-32.768KDZF-T is the preferred direct substitute. It maintains identical electrical specifications and mechanical dimensions to the 9H03200413. The part is Active status, ROHS3 Compliant, and REACH Affected. Inventory availability is higher (64953 pcs) than the original part. Selection of this substitute requires no circuit redesign or PCB layout modification.

Secondary Substitutes: MC-146 Series (EPSON)

The EPSON MC-146 32.7680KA series parts (A0, A3, A5 variants with PURE SN or ROHS designations) are functionally equivalent with identical electrical parameters. All variants maintain 32.768 kHz frequency, ±20ppm tolerance, 12.5pF load capacitance, and 65 kOhms ESR across the -40°C to 85°C operating range. These parts are ROHS3 Compliant and REACH Affected.

The width dimension increases from 1.40mm to 1.50mm. PCB footprint verification is required before selection. The MC-146 32.7680KA-A0:ROHS variant offers the highest inventory (66791 pcs) among EPSON options.

Not Recommended as Direct Substitutes:

The MC-146 32.7680KA-AC0 and MC-146 32.7680KA-AC3 variants feature 9pF load capacitance instead of 12.5pF. These parts are not direct substitutes unless circuit design permits load capacitance modification and re-tuning of the oscillator circuit.

Frequently Asked Questions (FAQ)

Q1: Can I use 9HT7-32.768KDZF-T as a direct replacement for 9H03200413?

A: Yes. The 9HT7-32.768KDZF-T is a parametric equivalent. All critical electrical specifications match: 32.768 kHz frequency, ±20ppm tolerance, 12.5pF load capacitance, 65 kOhms ESR, and -40°C to 85°C operating temperature. Mechanical dimensions are identical (0.264" L x 0.055" W). The primary difference is packaging format (Tape & Reel) and RoHS compliance level (ROHS3 vs. RoHS Compliant). No circuit modification is required.

Q2: What is the difference between the TXC 9H03200413 and EPSON MC-146 32.7680KA series?

A: Both manufacturers produce 32.768 kHz crystals with identical electrical specifications for this application. The EPSON MC-146 variants have a slightly wider package (1.50mm vs. 1.40mm). All EPSON variants listed are ROHS3 Compliant and REACH Affected. Verify PCB footprint compatibility before selection, as the 0.10mm width increase may affect layout in space-constrained designs.

Q3: Why are there multiple EPSON MC-146 variants (A0, A3, A5) with PURE SN and ROHS designations?

A: These designations indicate different manufacturing batches and lead finish specifications. PURE SN indicates pure tin lead finish, while ROHS designations indicate RoHS-compliant manufacturing. All variants maintain identical electrical and mechanical specifications. Selection between variants depends on procurement requirements and lead finish preferences. Inventory levels vary: MC-146 32.7680KA-A0:ROHS has the highest availability (66791 pcs).

Q4: Can I substitute the MC-146 32.7680KA-AC0 (9pF) for the 9H03200413 (12.5pF)?

A: No. Load capacitance is a critical parameter that determines oscillator resonance frequency and stability. The 9pF variant is not a direct substitute. Using a 9pF crystal in a circuit designed for 12.5pF will result in frequency deviation and timing errors. Substitution would require circuit redesign and re-tuning of the oscillator network.

Q5: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the lowest moisture sensitivity level. These crystals can be stored indefinitely without special moisture control measures. No baking or desiccant storage is required before assembly, simplifying inventory management and reducing component handling costs.

Q6: Are all listed substitutes RoHS compliant?

A: The original 9H03200413 is RoHS Compliant. The 9HT7-32.768KDZF-T is ROHS3 Compliant. All EPSON MC-146 variants listed are ROHS3 Compliant. ROHS3 represents an updated compliance standard. Both RoHS and ROHS3 compliance satisfy regulatory requirements for lead-free manufacturing in EU and similar markets.

Q7: Which substitute offers the best inventory availability?

A: The EPSON MC-146 32.7680KA-A0:ROHS variant has the highest inventory (66791 pcs), followed by the TXC 9HT7-32.768KDZF-T (64953 pcs). Both exceed the original 9H03200413 inventory (30300 pcs). For immediate procurement needs, either of these options provides supply security.

Q8: Does the 0.10mm width difference between TXC and EPSON parts affect PCB design?

A: The width increase from 1.40mm to 1.50mm is minimal but must be verified against PCB footprint specifications. If the PCB layout includes tight spacing constraints or adjacent components, the EPSON variant may require footprint adjustment. The TXC 9HT7-32.768KDZF-T maintains the original 1.40mm width and requires no layout modification.

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