Equivalent & Substitute Parts for 9B-4.096MAAJ-B

Part Overview

The 9B-4.096MAAJ-B is a 4.096 MHz through-hole crystal manufactured by TXC CORPORATION, designed for fundamental mode operation with 18pF load capacitance and 150 Ohms equivalent series resistance. This component is classified as obsolete, making identification of active equivalent substitutes essential for ongoing production and maintenance applications. The HC-49/US package format and specific frequency/stability parameters define the substitution criteria for this crystal oscillator component.

Substiute Parts

9B-4.096MAAJ-B

TXC CORPORATIONIn Stock: 10799B-4.096MAAJ-B Datasheet

Current PartRFQ

HC49US-FF3F18-4.0960MHZ

ILSIIn Stock: 2009HC49US-FF3F18-4.0960MHZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9B-4.096MAAJ-B is determined by strict equivalence across eight critical parameters: frequency (4.096 MHz), frequency stability (±30ppm), load capacitance (18pF), ESR (150 Ohms), operating mode (Fundamental), package format (HC-49/US), mounting type (Through Hole), and operating temperature range (-20°C ~ 70°C).

The substitute part HC49US-FF3F18-4.0960MHZ manufactured by ILSI meets all eight critical parameters identically. This part maintains the same electrical specifications and physical form factor, enabling direct substitution in applications currently using the obsolete 9B-4.096MAAJ-B. The primary distinction between these parts is product status: the TXC part is obsolete while the ILSI equivalent is active, making the ILSI part suitable for new designs and ongoing production requirements.

Parameter Comparison

Engineering Selection Recommendations

The HC49US-FF3F18-4.0960MHZ from ILSI is the direct equivalent substitute for the obsolete 9B-4.096MAAJ-B from TXC CORPORATION. Selection of the ILSI part is based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match identically, including frequency (4.096 MHz), frequency stability (±30ppm), load capacitance (18pF), and ESR (150 Ohms). The operating mode (Fundamental) and temperature range (-20°C ~ 70°C) are identical.

Physical Compatibility: Both parts use the HC-49/US package format with through-hole mounting. Minor dimensional variations (0.016" length difference, 0.012" width difference, 0.007" height difference) fall within standard HC-49/US package tolerances and do not affect PCB assembly or circuit operation.

Compliance Status: Both parts are ROHS3 compliant and classified under ECCN EAR99 with identical HTSUS code 8541.60.0030. The ILSI part is REACH Unaffected while the TXC part is REACH Affected; however, this distinction does not prevent substitution in applications where the TXC part was previously used.

Product Status: The ILSI part is active and available in production quantities (1982 Pcs in stock), whereas the TXC part is obsolete. This makes the ILSI substitute the appropriate choice for new designs, production continuity, and component replenishment.

Frequently Asked Questions (FAQ)

Q: Can the HC49US-FF3F18-4.0960MHZ directly replace the 9B-4.096MAAJ-B in existing circuits?

A: Yes. The ILSI part meets all critical electrical and mechanical specifications identically. The minor dimensional variations within HC-49/US package tolerances do not affect circuit performance or PCB assembly compatibility.

Q: What are the key parameters that determine substitution eligibility for this crystal?

A: Eight parameters must match exactly: frequency (4.096 MHz), frequency stability (±30ppm), load capacitance (18pF), ESR (150 Ohms), operating mode (Fundamental), package format (HC-49/US), mounting type (Through Hole), and operating temperature range (-20°C ~ 70°C).

Q: Why is the TXC 9B-4.096MAAJ-B listed as obsolete?

A: Product status reflects manufacturer discontinuation. The ILSI equivalent remains in active production, making it the appropriate choice for ongoing applications.

Q: Are there differences in moisture sensitivity between these parts?

A: Yes. The TXC part lists MSL as Not Applicable, while the ILSI part is rated MSL 1 (Unlimited). This difference does not affect substitution; the ILSI part's MSL 1 rating indicates superior moisture resistance.

Q: Do the dimensional differences between the two parts affect circuit operation?

A: No. The dimensional variations (length, width, height) fall within standard HC-49/US package tolerances and do not impact electrical performance or PCB assembly.

Q: What is the inventory status for the substitute part?

A: The HC49US-FF3F18-4.0960MHZ is available with 1982 Pcs in stock as new original inventory, compared to 1036 Pcs for the obsolete TXC part.