830003231B Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 830003231B is a 16 MHz quartz crystal oscillator in HC-49/U package configuration, designed for through-hole mounting applications. This component operates at a fundamental frequency of 16 MHz with a load capacitance of 30pF and equivalent series resistance of 35 Ohms. The part is currently active in production status and maintains ROHS3 compliance. Substitute parts are identified to provide alternative sourcing options when the primary manufacturer part becomes unavailable or when inventory requirements necessitate multiple qualified suppliers.

Key Parameters

Parameter	Specification
Frequency	16 MHz
Frequency Tolerance	±20ppm
Frequency Stability	±30ppm
Load Capacitance	30pF
Equivalent Series Resistance (ESR)	35 Ohms
Operating Mode	Fundamental
Package / Case	HC-49/U
Mounting Type	Through Hole
Operating Temperature Range	-10°C to 60°C
Size / Dimension	0.435" L x 0.183" W (11.05mm x 4.65mm)
Height - Seated (Max)	0.530" (13.46mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 830003231B is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part LFXTAL003231BULK from IQD Frequency Products qualifies as a parametric equivalent based on the following criteria:

Electrical Parameter Equivalence:

Identical frequency specification: 16 MHz
Matching frequency tolerance: ±20ppm
Matching frequency stability: ±30ppm
Identical load capacitance: 30pF
Identical ESR: 35 Ohms
Same operating mode: Fundamental

Mechanical Parameter Equivalence:

Identical package type: HC-49/U
Identical mounting configuration: Through Hole
Matching physical dimensions: 0.435" L x 0.183" W (11.05mm x 4.65mm)
Matching seated height: 0.530" (13.46mm)

Environmental & Compliance Equivalence:

Identical operating temperature range: -10°C to 60°C
Matching RoHS compliance: ROHS3 Compliant
Identical ECCN classification: EAR99
Identical HTSUS code: 8541.60.0050

Parameter Comparison

Parameter	830003231B (Würth Elektronik)	LFXTAL003231BULK (IQD Frequency Products)
Frequency	16 MHz	16 MHz
Frequency Tolerance	±20ppm	±20ppm
Frequency Stability	±30ppm	±30ppm
Load Capacitance	30pF	30pF
ESR (Equivalent Series Resistance)	35 Ohms	35 Ohms
Operating Mode	Fundamental	Fundamental
Package / Case	HC-49/U	HC-49/U
Mounting Type	Through Hole	Through Hole
Operating Temperature Range	-10°C to 60°C	-10°C to 60°C
Size / Dimension	0.435" L x 0.183" W (11.05mm x 4.65mm)	0.435" L x 0.183" W (11.05mm x 4.65mm)
Height - Seated (Max)	0.530" (13.46mm)	0.530" (13.46mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active
Packaging	Bulk	Bulk

Engineering Selection Recommendations

Both the primary part 830003231B and the substitute LFXTAL003231BULK are active production components with ROHS3 compliance certification. Selection between these parts is based on availability and supply chain requirements rather than technical differentiation, as all electrical, mechanical, and environmental specifications are identical.

The 830003231B (Würth Elektronik) maintains REACH Unaffected status, while the LFXTAL003231BULK (IQD Frequency Products) is classified as REACH Affected. Both parts carry identical ECCN (EAR99) and HTSUS (8541.60.0050) classifications for export and tariff purposes.

Component selection should prioritize inventory availability and lead time requirements. The LFXTAL003231BULK currently maintains higher inventory levels (1051 Pcs) compared to the 830003231B (767 Pcs), which may influence procurement decisions for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can the LFXTAL003231BULK directly replace the 830003231B in existing circuit designs?

A: Yes. The LFXTAL003231BULK is a parametric equivalent with identical electrical specifications (16 MHz, ±20ppm tolerance, 30pF load capacitance, 35 Ohms ESR), mechanical configuration (HC-49/U through-hole package), and operating temperature range (-10°C to 60°C). No circuit modifications are required.

Q: Are there any differences in compliance certifications between these parts?

A: Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications. The primary difference is REACH status: the 830003231B is REACH Unaffected while the LFXTAL003231BULK is REACH Affected. This distinction may impact procurement decisions based on regulatory requirements in specific markets.

Q: What determines whether a crystal oscillator can substitute for another?

A: Substitution requires equivalence across frequency (16 MHz), frequency tolerance (±20ppm), load capacitance (30pF), ESR (35 Ohms), package type (HC-49/U), mounting configuration (through-hole), physical dimensions, and operating temperature range (-10°C to 60°C). Deviation in any of these parameters disqualifies a part as a direct substitute.

Q: Are both parts suitable for the same PCB layout and footprint?

A: Yes. Both the 830003231B and LFXTAL003231BULK share identical physical dimensions (0.435" L x 0.183" W / 11.05mm x 4.65mm) and maximum seated height (0.530" / 13.46mm), ensuring compatibility with the same through-hole PCB footprint and assembly processes.

Q: What is the significance of the ±30ppm frequency stability specification?

A: Frequency stability (±30ppm) defines the maximum frequency variation over the operating temperature range (-10°C to 60°C) and represents the crystal's aging characteristics. This specification, combined with the ±20ppm frequency tolerance, ensures the oscillator maintains acceptable frequency accuracy across environmental conditions and component lifetime.

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