TXC CORPORATION 7B32070002 Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 7B32070002 is a 32 MHz fundamental mode crystal oscillator with 10pF load capacitance and 40 Ohms equivalent series resistance, packaged in a 4-SMD, No Lead surface mount configuration. This component is classified as obsolete product status. Due to its obsolete classification, equivalent and substitute parts from active product lines are necessary for ongoing design support, procurement continuity, and manufacturing operations.

Key Parameters

Parameter	Value
Manufacturer Part Number	7B32070002
Manufacturer	TXC CORPORATION
Frequency	32 MHz
Frequency Stability	±10ppm
Frequency Tolerance	±10ppm
Load Capacitance	10pF
ESR (Equivalent Series Resistance)	40 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-20°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	4-SMD, No Lead
Size / Dimension	0.197" L x 0.126" W (5.00mm x 3.20mm)
Height - Seated (Max)	0.041" (1.05mm)
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 7B32070002 is determined by the following critical parameters that must remain constant or compatible:

Primary Matching Criteria:

Frequency: 32 MHz (exact match required)
Frequency Stability: ±10ppm (exact match required)
Load Capacitance: 10pF (exact match required)
Operating Mode: Fundamental (exact match required)
Operating Temperature Range: -20°C ~ 70°C (minimum coverage required)
Package / Case: 4-SMD, No Lead (exact match required)
RoHS Compliance: Required

Secondary Compatibility Parameters:

ESR (Equivalent Series Resistance): 40 Ohms (primary specification); 60 Ohms acceptable with circuit validation
Physical Dimensions: Smaller or equal dimensions acceptable; larger dimensions may require PCB layout modification
MSL Rating: 1 (Unlimited) preferred; alternative MSL ratings acceptable if storage conditions managed

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (ESR 40 Ohms, 10pF Load Capacitance): Parts with identical ESR and load capacitance specifications, requiring no circuit modification.

Category B - Compatible Substitutes (ESR 60 Ohms or alternative load capacitance): Parts with different ESR or load capacitance values that maintain frequency, stability, and operating mode specifications. These require circuit validation before implementation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Frequency	Frequency Stability	Load Capacitance	ESR (Ohms)	Operating Mode	Operating Temperature	Package / Case	Size (mm)	Height (mm)	Product Status	RoHS Status
7B32070002	TXC CORPORATION	32 MHz	±10ppm	10pF	40	Fundamental	-20°C ~ 70°C	4-SMD, No Lead	5.00 x 3.20	1.05	Obsolete	RoHS Compliant
7M-32.000MEEQ-T	TXC CORPORATION	32 MHz	±10ppm	10pF	60	Fundamental	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	RoHS Compliant
7M32030001	TXC CORPORATION	32 MHz	±10ppm	10pF	Not Specified	Not Specified	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	RoHS Compliant
7M32070002	TXC CORPORATION	32 MHz	±10ppm	10pF	Not Specified	Not Specified	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	RoHS Compliant
7V32000002	TXC CORPORATION	32 MHz	±10ppm	9pF	60	Fundamental	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.90	Active	RoHS Compliant
7V32000034	TXC CORPORATION	32 MHz	±10ppm	12pF	60	Fundamental	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.90	Active	RoHS Compliant
403C11A32M00000	CTS-Frequency Controls	32 MHz	±10ppm	10pF	60	Fundamental	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	ROHS3 Compliant
403C11B32M00000	CTS-Frequency Controls	32 MHz	±10ppm	13pF	60	Fundamental	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	ROHS3 Compliant
ABM8-32.000MHZ-10-B1U-T	Abracon LLC	32 MHz	±10ppm	10pF	40	Fundamental	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	ROHS3 Compliant
ABM8-32.000MHZ-12-B1U-T	Abracon LLC	32 MHz	±10ppm	12pF	40	Fundamental	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (No Circuit Modification Required):

The ABM8-32.000MHZ-10-B1U-T from Abracon LLC is the primary direct equivalent. This part maintains identical electrical specifications: 32 MHz frequency, ±10ppm stability, 10pF load capacitance, and 40 Ohms ESR. The part is in active product status with ROHS3 compliance. Physical dimensions are smaller (3.20mm x 2.50mm versus 5.00mm x 3.20mm), which may require PCB layout adjustment but does not affect electrical performance.

Compatible Substitutes (Circuit Validation Required):

The 7M-32.000MEEQ-T and 403C11A32M00000 are compatible substitutes with identical frequency, stability, and load capacitance specifications. Both parts feature 60 Ohms ESR compared to the original 40 Ohms specification. These parts are in active product status. The 7M-32.000MEEQ-T is available in Tape & Reel packaging with 67,711 pieces in stock. The 403C11A32M00000 is ROHS3 compliant with 58,972 pieces in stock.

Alternative Load Capacitance Options:

The 7M32000035 (12pF load capacitance) and 7V32000034 (12pF load capacitance) are available for applications requiring different load capacitance specifications. The 7V32000002 (9pF load capacitance) is available for applications with lower capacitance requirements. These parts require circuit validation and load capacitance adjustment in the oscillator circuit.

Compliance and Availability:

All substitute parts maintain RoHS compliance. The 7M series parts from TXC CORPORATION and ABM8 series from Abracon LLC are in active product status, ensuring long-term availability. CTS-Frequency Controls 403 series parts are ROHS3 compliant and available in high quantities.

Frequently Asked Questions (FAQ)

Q: Can the 7B32070002 be directly replaced with the 7M-32.000MEEQ-T?

A: The 7M-32.000MEEQ-T is electrically compatible with identical frequency, stability, and load capacitance. However, the ESR differs (60 Ohms versus 40 Ohms). Circuit validation is required to confirm oscillator startup and frequency accuracy with the higher ESR value. Physical dimensions are also smaller, requiring PCB layout verification.

Q: What is the difference between 40 Ohms and 60 Ohms ESR?

A: ESR (Equivalent Series Resistance) affects crystal oscillator startup conditions and power consumption. A 40 Ohms ESR requires less drive energy than 60 Ohms. Substitution with higher ESR may require oscillator circuit adjustment or validation to ensure reliable startup across the operating temperature range.

Q: Are the TXC 7M series parts direct replacements?

A: The 7M32030001 and 7M32070002 maintain identical frequency, stability, and load capacitance specifications. However, ESR and operating mode specifications are not provided in the available data. Physical dimensions are smaller (3.20mm x 2.50mm versus 5.00mm x 3.20mm). These parts are in active product status and suitable for new designs with circuit validation.

Q: Can I use a 12pF load capacitance part instead of 10pF?

A: No direct substitution is possible without circuit modification. Load capacitance affects the oscillator's resonant frequency and startup behavior. The 7M32000035, 7V32000034, and ABM8-32.000MHZ-12-B1U-T are 12pF variants requiring oscillator circuit adjustment and validation.

Q: What is the advantage of the Abracon ABM8 series over TXC parts?

A: The ABM8-32.000MHZ-10-B1U-T provides a direct electrical equivalent with 40 Ohms ESR matching the original specification. It is in active product status with ROHS3 compliance. The part is available from multiple distributors with high inventory levels, ensuring procurement continuity.

Q: Does the smaller physical size of substitute parts affect performance?

A: Physical size reduction from 5.00mm x 3.20mm to 3.20mm x 2.50mm does not affect electrical performance. PCB layout modifications may be required to accommodate the smaller footprint. Height differences (1.05mm original versus 0.80mm substitutes) may affect solder reflow profiles and require process validation.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are RoHS compliant. The TXC 7M and 7V series parts are RoHS Compliant. The CTS-Frequency Controls 403 series and Abracon ABM8 series are ROHS3 Compliant, representing the current RoHS standard.

Q: What is the MSL (Moisture Sensitivity Level) difference?

A: The original 7B32070002 has MSL 1 (Unlimited). The TXC 7M and 7V series parts also have MSL 1 (Unlimited). The Abracon ABM8 series parts have MSL Not Applicable. MSL 1 and Not Applicable ratings indicate minimal moisture sensitivity, requiring standard handling procedures without special desiccant storage.

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

A: Yes, provided all parts meet the specified electrical parameters: 32 MHz frequency, ±10ppm stability, 10pF load capacitance, and compatible ESR values. However, it is recommended to validate oscillator performance with each manufacturer's part to ensure consistent startup and frequency accuracy across production batches.

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