830066431 WE-XTAL QUARTZ CRYSTAL 32.7680 kHz Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 830066431 is a 32.768 kHz tuning fork crystal oscillator designed for real-time clock and low-frequency timing applications. This surface-mount component operates in fundamental mode with a load capacitance of 7pF and an equivalent series resistance of 90 kOhms. The part is actively produced and widely used in consumer electronics, IoT devices, and industrial timing circuits requiring precise frequency stability over extended temperature ranges.

Substitute parts are necessary to address supply chain continuity, inventory availability, or design flexibility across multiple manufacturing sources while maintaining identical electrical and mechanical performance characteristics.

Key Parameters

Parameter	Specification
Frequency	32.768 kHz
Frequency Tolerance	±20ppm
Load Capacitance	7pF
Equivalent Series Resistance (ESR)	90 kOhms
Operating Mode	Fundamental
Operating Temperature Range	-40°C to 85°C
Mounting Type	Surface Mount
Package / Case	2-SMD, No Lead
Size / Dimension	0.063" L x 0.039" W (1.60mm x 1.00mm)
Height - Seated (Max)	0.020" (0.50mm)
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS Code	8541.60.0010

Substitute Part Grouping Explanation

Substitution eligibility for the 830066431 is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match exactly for a part to function as a direct substitute:

Frequency: 32.768 kHz (tuning fork crystal standard for real-time clock applications)
Frequency Tolerance: ±20ppm (defines timing accuracy across operating conditions)
Load Capacitance: 7pF (determines circuit resonance and oscillation characteristics)
Equivalent Series Resistance: 90 kOhms (affects oscillation startup and power consumption)
Operating Mode: Fundamental (single-frequency operation without overtone modes)
Operating Temperature Range: -40°C to 85°C (industrial and consumer electronics standard)
Package / Case: 2-SMD, No Lead (physical and electrical interface compatibility)
Size / Dimension: 0.063" L x 0.039" W (1.60mm x 1.00mm) (PCB layout and assembly compatibility)
Height - Seated (Max): 0.020" (0.50mm) (clearance and automated assembly compatibility)

All listed substitute parts meet these criteria and are manufactured by recognized industry suppliers including TXC Corporation, Abracon LLC, Citizen Finedevice, Micro Crystal AG, ECS Inc., IQD Frequency Products, QST, Seiko Instruments, and TGS.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Frequency	Frequency Tolerance	Load Capacitance	ESR	Operating Temperature	Package	Size (mm)	Height (mm)	RoHS Status	Packaging Type	Inventory (Pcs)
830066431	Würth Elektronik	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	3413
9HT12-32.768KDZY-T	TXC Corporation	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	RoHS Compliant	Tape & Reel	213566
ABS05-32.768KHZ-7-T	Abracon LLC	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	4544
CM1610H32768DZYT	Citizen Finedevice Co Ltd	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	4163
CM9V-T1A-32.768KHZ-7PF-20PPM-TA-QC	Micro Crystal AG	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Cut Tape & Digi-Reel	36571
ECS-.327-7-16-TR	ECS Inc.	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	15326
ECS-.327-7-16-TR3	ECS Inc.	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	48226
LFXTAL066431	IQD Frequency Products	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	5588
QT1C-32.768KDZY-T	QST	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	40982
SC16S-7PF20PPM	Seiko Instruments	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	39918
YV32K76800S003	TGS	32.768 kHz	±20ppm	7pF	90 kOhms	-40°C ~ 85°C	2-SMD, No Lead	1.60 x 1.00	0.50	ROHS3	Tape & Reel	60702

Engineering Selection Recommendations

All listed substitute parts are active products with ROHS3 compliance or equivalent RoHS certification status. Selection among these equivalents is based on the following factors:

Supply Availability: The 9HT12-32.768KDZY-T (TXC Corporation) offers the highest inventory level at 213,566 pieces, followed by YV32K76800S003 (TGS) at 60,702 pieces and QT1C-32.768KDZY-T (QST) at 40,982 pieces. These options provide superior supply chain security for high-volume production.

Packaging Format: The CM9V-T1A-32.768KHZ-7PF-20PPM-TA-QC (Micro Crystal AG) is available in Cut Tape and Digi-Reel format, offering flexibility for lower-volume or mixed-order requirements. All other substitutes are supplied in standard Tape & Reel format suitable for automated assembly.

Regulatory Compliance: All substitute parts maintain REACH Unaffected status and EAR99 export classification, matching the original part's compliance profile. Moisture Sensitivity Level (MSL) varies between "Not Applicable" and "1 (Unlimited)," with no impact on functional equivalence.

Manufacturer Diversity: Selection from multiple manufacturers (TXC, Abracon, Citizen, Micro Crystal, ECS, IQD, QST, Seiko, TGS) enables supply chain resilience and reduces single-source dependency risk.

Frequently Asked Questions (FAQ)

Q: Can the 9HT12-32.768KDZY-T replace the 830066431 in existing designs without circuit modification?

A: Yes. The 9HT12-32.768KDZY-T is a parametric equivalent with identical frequency (32.768 kHz), frequency tolerance (±20ppm), load capacitance (7pF), ESR (90 kOhms), operating temperature range (-40°C to 85°C), and package dimensions (1.60mm x 1.00mm, 0.50mm height). No circuit changes are required.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel packaging supplies components on continuous carrier tape wound on reels, optimized for high-speed automated assembly. Cut Tape & Digi-Reel format provides components on cut tape segments with optional reel packaging, suitable for lower-volume orders or mixed component sourcing. Both formats are compatible with standard pick-and-place equipment.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitutes carry either ROHS3 Compliant or RoHS Compliant certification. The 9HT12-32.768KDZY-T is marked as "RoHS Compliant" without specific version designation, while all others explicitly state ROHS3 compliance. Both certifications meet current regulatory requirements for lead-free manufacturing.

Q: Does Moisture Sensitivity Level (MSL) affect component interchangeability?

A: MSL does not affect electrical or mechanical interchangeability. MSL designates storage and handling requirements prior to assembly. Parts marked "Not Applicable" (830066431, ABS05-32.768KHZ-7-T, LFXTAL066431) require standard dry storage. Parts marked "1 (Unlimited)" (9HT12-32.768KDZY-T, CM1610H32768DZYT, CM9V-T1A-32.768KHZ-7PF-20PPM-TA-QC, ECS-.327-7-16-TR, ECS-.327-7-16-TR3, QT1C-32.768KDZY-T, SC16S-7PF20PPM, YV32K76800S003) have unlimited shelf life under normal conditions.

Q: Which substitute offers the best supply chain continuity?

A: The 9HT12-32.768KDZY-T (TXC Corporation) with 213,566 pieces in stock provides the highest inventory buffer. For secondary sourcing, YV32K76800S003 (TGS) at 60,702 pieces and QT1C-32.768KDZY-T (QST) at 40,982 pieces offer substantial availability.

Q: Are there any export restrictions on these crystal oscillators?

A: All parts, including the original 830066431 and all substitutes, are classified as EAR99 under U.S. export control regulations, indicating no specific licensing requirements for most commercial applications. Verify end-use compliance with applicable export control authorities for your jurisdiction.

Q: Can I mix different manufacturers' parts in the same production batch?

A: Yes. All substitute parts meet identical electrical and mechanical specifications. Mixing manufacturers within a single production batch does not affect circuit performance or reliability. However, maintain separate inventory tracking and documentation for traceability and quality assurance purposes.

Q: What is the significance of the ±20ppm frequency tolerance specification?

A: The ±20ppm tolerance defines the maximum frequency deviation from the nominal 32.768 kHz across the operating temperature range (-40°C to 85°C) and over the component's operational lifetime. This specification ensures real-time clock accuracy within ±1.73 seconds per day, meeting standard requirements for consumer electronics and industrial timing applications.

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