Equivalent & Substitute Parts for 830003257B

Part Overview

The Würth Elektronik 830003257B is a 3.6864 MHz quartz crystal oscillator in HC-49/U package configuration, designed for through-hole mounting applications. This fundamental mode crystal operates across the temperature range of -10°C to 60°C with a frequency tolerance of ±20ppm and load capacitance of 30pF. The component is classified as Active product status with full RoHS3 compliance. Substitute parts are identified to address inventory availability, supply chain continuity, or specific application requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Specification
Frequency	3.6864 MHz
Frequency Tolerance	±20ppm
Frequency Stability	±50ppm
Load Capacitance	30pF
ESR (Equivalent Series Resistance)	150 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-10°C to 60°C
Package / Case	HC-49/U
Mounting Type	Through Hole
Physical Dimensions	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 830003257B is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part LFXTAL003257BULK from IQD Frequency Products is classified as a parametric equivalent based on the following matching criteria:

Electrical Parameters (Must Match Exactly):

Frequency: 3.6864 MHz
Frequency Tolerance: ±20ppm
Frequency Stability: ±50ppm
Load Capacitance: 30pF
ESR: 150 Ohms
Operating Mode: Fundamental

Mechanical Parameters (Must Match Exactly):

Package / Case: HC-49/U
Mounting Type: Through Hole
Physical Dimensions: 0.435" L x 0.183" W (11.05mm x 4.65mm)
Height - Seated (Max): 0.530" (13.46mm)

Environmental Parameters (Must Match Exactly):

Operating Temperature Range: -10°C to 60°C
RoHS Status: RoHS3 Compliant

All identified substitute parts maintain identical specifications across these parameters, ensuring direct functional and mechanical interchangeability in circuit applications.

Parameter Comparison

Parameter	830003257B (Würth Elektronik)	LFXTAL003257BULK (IQD Frequency Products)
Frequency	3.6864 MHz	3.6864 MHz
Frequency Tolerance	±20ppm	±20ppm
Frequency Stability	±50ppm	±50ppm
Load Capacitance	30pF	30pF
ESR	150 Ohms	150 Ohms
Operating Mode	Fundamental	Fundamental
Operating Temperature Range	-10°C to 60°C	-10°C to 60°C
Package / Case	HC-49/U	HC-49/U
Mounting Type	Through Hole	Through Hole
Physical Dimensions	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
ECCN	EAR99	EAR99
HTSUS Code	8541.60.0030	8541.60.0030

Engineering Selection Recommendations

Both the primary part 830003257B and the substitute LFXTAL003257BULK are classified as Active products with full RoHS3 compliance and identical ECCN/HTSUS classifications. Selection between these components is based on availability and supply chain requirements rather than technical differentiation.

The 830003257B (Würth Elektronik) maintains RoHS3 Unaffected status with 1189 pieces in current inventory. The LFXTAL003257BULK (IQD Frequency Products) maintains RoHS3 Affected status with 1285 pieces in current inventory. Both components satisfy identical electrical, mechanical, and environmental specifications for direct substitution in HC-49/U through-hole crystal applications requiring 3.6864 MHz operation.

Frequently Asked Questions (FAQ)

Q: Can LFXTAL003257BULK replace 830003257B in existing designs?

A: Yes. Both components are parametric equivalents with identical frequency, tolerance, load capacitance, ESR, operating temperature range, and HC-49/U package specifications. Direct substitution is supported without circuit modification.

Q: Are there differences in RoHS compliance between these parts?

A: Both components are RoHS3 compliant. The 830003257B carries RoHS3 Unaffected status while LFXTAL003257BULK carries RoHS3 Affected status. Both satisfy RoHS3 requirements for end-use applications.

Q: Do these crystals have identical physical dimensions?

A: Yes. Both components share identical dimensions of 0.435" L x 0.183" W (11.05mm x 4.65mm) with maximum seated height of 0.530" (13.46mm), ensuring compatibility with existing PCB layouts and through-hole mounting patterns.

Q: What is the frequency tolerance specification for these crystals?

A: Both components specify ±20ppm frequency tolerance with ±50ppm frequency stability across the -10°C to 60°C operating temperature range.

Q: Are these components suitable for the same circuit applications?

A: Yes. Identical electrical parameters including 3.6864 MHz frequency, 30pF load capacitance, and 150 Ohms ESR ensure both components function identically in fundamental mode crystal oscillator circuits.

Q: What is the load capacitance requirement for these crystals?

A: Both components specify 30pF load capacitance, which must be matched in the oscillator circuit design for proper frequency accuracy.

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