TXC CORPORATION 7M12020001 12 MHz Crystal Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 7M12020001 is a 12 MHz surface mount crystal oscillator with 18pF load capacitance, ±30ppm frequency stability, and 4-SMD no-lead package configuration. This component is classified as Active product status and is RoHS compliant with MSL 1 rating. Substitute parts are identified based on matching electrical specifications (frequency, load capacitance, frequency stability, operating temperature range) and mechanical compatibility (package type, mounting configuration, physical dimensions).

Key Parameters

Parameter	Value
Manufacturer Part Number	7M12020001
Manufacturer	TXC CORPORATION
Frequency	12 MHz
Frequency Stability	±30ppm
Load Capacitance	18pF
Operating Temperature Range	-20°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	4-SMD, No Lead
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max)	0.031" (0.80mm)
RoHS Status	RoHS Compliant
MSL Rating	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts are classified into two groups based on load capacitance specification:

Group 1: 18pF Load Capacitance (Direct Electrical Equivalents) These parts maintain identical load capacitance (18pF) to the main part 7M12020001. All Group 1 substitutes share the same frequency (12 MHz), frequency stability (±30ppm), operating temperature range (-20°C ~ 70°C), and 4-SMD no-lead package configuration. Variations exist in ESR (Equivalent Series Resistance) values and physical dimensions within the same package family.

Group 2: 20pF Load Capacitance (Functional Alternatives) These parts operate at the same frequency and stability but specify 20pF load capacitance instead of 18pF. These are functional alternatives where circuit design accommodates the higher load capacitance specification. All Group 2 parts maintain the same frequency (12 MHz), frequency stability (±30ppm), operating temperature range (-20°C ~ 70°C), and 4-SMD no-lead package configuration.

Key Parameters Determining Substitution: Frequency (12 MHz), Frequency Stability (±30ppm), Operating Temperature Range (-20°C ~ 70°C), Package Type (4-SMD No Lead), Mounting Type (Surface Mount), Load Capacitance (18pF or 20pF).

Parameter Comparison

Part Number	Manufacturer	Frequency	Frequency Stability	Load Capacitance	ESR (Ohms)	Operating Temperature	Package	Size (mm)	Height (mm)	Product Status	RoHS Status
7M12020001	TXC CORPORATION	12 MHz	±30ppm	18pF	Not Specified	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	RoHS Compliant
7M-12.000MAAJ-T	TXC CORPORATION	12 MHz	±30ppm	18pF	100	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.80	Active	RoHS Compliant
8Z-12.000MAAJ-T	TXC CORPORATION	12 MHz	±30ppm	18pF	150	-20°C ~ 70°C	4-SMD, No Lead	2.50 x 2.00	0.55	Active	RoHS Compliant
C3E-12.000-18-3030-R	Aker Technology Corp	12 MHz	±30ppm	18pF	100	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.75	Active	ROHS3 Compliant
FL1200060	Diodes Incorporated	12 MHz	±30ppm	18pF	100	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.75	Active	ROHS3 Compliant
FA-238V 12.0000MD-G0	EPSON	12 MHz	±30ppm	20pF	100	-20°C ~ 70°C	4-SMD, No Lead	3.20 x 2.50	0.70	Obsolete	ROHS3 Compliant
FH1200001	Diodes Incorporated	12 MHz	±30ppm	20pF	150	-20°C ~ 70°C	4-SMD, No Lead	2.50 x 2.00	0.60	Active	ROHS3 Compliant

Engineering Selection Recommendations

Group 1 Substitutes (18pF Load Capacitance - Preferred)

7M-12.000MAAJ-T (TXC CORPORATION): Active product status, identical load capacitance, same manufacturer as main part, RoHS compliant. Suitable for direct replacement with identical electrical specifications.

8Z-12.000MAAJ-T (TXC CORPORATION): Active product status, identical load capacitance, same manufacturer, compact package (2.50mm x 2.00mm) with reduced height (0.55mm). ESR specified at 150 Ohms. Suitable where space constraints require smaller footprint.

C3E-12.000-18-3030-R (Aker Technology Corp): Active product status, identical load capacitance, ROHS3 compliant. Maintains original package dimensions (3.20mm x 2.50mm). Suitable for applications requiring alternative manufacturer sourcing.

FL1200060 (Diodes Incorporated): Active product status, identical load capacitance, ROHS3 compliant, SaRonix-eCera™ series. Maintains original package dimensions (3.20mm x 2.50mm). Suitable for applications requiring alternative manufacturer sourcing.

Group 2 Substitutes (20pF Load Capacitance - Conditional)

FA-238V 12.0000MD-G0 (EPSON): Obsolete product status. 20pF load capacitance specification. Not recommended for new designs due to obsolescence.

FH1200001 (Diodes Incorporated): Active product status, 20pF load capacitance, ROHS3 compliant, SaRonix-eCera™ FH series. Compact package (2.50mm x 2.00mm) with reduced height (0.60mm). Suitable only where circuit design accommodates 20pF load capacitance specification.

Frequently Asked Questions (FAQ)

Q: Can 7M-12.000MAAJ-T directly replace 7M12020001? A: Yes. Both parts share identical frequency (12 MHz), frequency stability (±30ppm), load capacitance (18pF), operating temperature range (-20°C ~ 70°C), and 4-SMD no-lead package configuration. The 7M-12.000MAAJ-T is packaged in Tape & Reel format and specifies 100 Ohms ESR.

Q: What is the difference between Group 1 and Group 2 substitutes? A: Group 1 substitutes maintain 18pF load capacitance matching the original part. Group 2 substitutes specify 20pF load capacitance. Load capacitance affects circuit resonance and must be accommodated in circuit design. Group 1 substitutes are electrically equivalent; Group 2 substitutes are functional alternatives requiring circuit verification.

Q: Can I use 8Z-12.000MAAJ-T in place of 7M12020001? A: Yes, with physical space consideration. The 8Z-12.000MAAJ-T maintains identical electrical specifications (12 MHz, ±30ppm, 18pF) but uses a smaller package footprint (2.50mm x 2.00mm versus 3.20mm x 2.50mm) and reduced height (0.55mm versus 0.80mm). Verify PCB layout compatibility before substitution.

Q: Why is FA-238V 12.0000MD-G0 listed if it is obsolete? A: FA-238V 12.0000MD-G0 is included in the substitute list based on provided input data. However, its Obsolete product status makes it unsuitable for new designs or long-term supply chain planning. Active alternatives should be prioritized.

Q: What does ESR (Equivalent Series Resistance) mean for crystal selection? A: ESR is the internal resistance of the crystal element. Lower ESR values (100 Ohms) typically indicate lower power consumption and better performance in certain circuit topologies. Higher ESR values (150 Ohms) may require circuit design adjustment. The main part 7M12020001 does not specify ESR; verify circuit requirements before selecting substitutes with specified ESR values.

Q: Are all substitutes RoHS compliant? A: All listed substitutes are RoHS compliant (either RoHS or ROHS3 standard). The main part 7M12020001 is RoHS Compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can I use FH1200001 (20pF) instead of FL1200060 (18pF)? A: No, not without circuit verification. FH1200001 specifies 20pF load capacitance while FL1200060 specifies 18pF. Load capacitance directly affects crystal resonance frequency and circuit stability. Substitution requires confirmation that circuit design accommodates the different load capacitance specification.

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