7M-32.000MEEI-T 32 MHz Crystal Equivalent & Substitute Parts

Part Overview

The 7M-32.000MEEI-T is a 32 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in 4-SMD, No Lead package configuration. This Active product operates across the temperature range of -20°C to 70°C with ±10ppm frequency stability and is RoHS Compliant with MSL 1 (Unlimited) moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs while maintaining the same frequency specification and operating characteristics.

Key Parameters

Parameter	Value	Unit
Frequency	32.0000	MHz
Frequency Stability	±10	ppm
Load Capacitance	16	pF
ESR (Equivalent Series Resistance)	60	Ohms
Operating Mode	Fundamental	—
Operating Temperature Range	-20 to 70	°C
Mounting Type	Surface Mount	—
Package / Case	4-SMD, No Lead	—
Size / Dimension	3.20 x 2.50	mm
Height - Seated (Max)	0.80	mm
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
RoHS Status	RoHS Compliant	—

Substitute Part Grouping Explanation

Substitution of the 7M-32.000MEEI-T is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Frequency: 32.0000 MHz (exact match required)
Frequency Stability: ±10ppm (exact match required)
Operating Mode: Fundamental (exact match required)
Operating Temperature Range: -20°C to 70°C (exact match required)
Package / Case: 4-SMD, No Lead (exact match required)
Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

Load Capacitance: 16pF (primary specification; alternatives with 12pF, 13pF, or 20pF load capacitance are listed as substitutes when circuit design permits load capacitance variation)
ESR: 60 Ohms (primary specification; alternatives with 40 Ohms or 50 Ohms ESR are acceptable substitutes when circuit impedance requirements allow)
Size / Dimension: 3.20mm x 2.50mm (primary specification; smaller packages listed as space-optimized alternatives)
Height - Seated (Max): 0.80mm (primary specification; lower profile alternatives available)

Substitute parts are grouped by load capacitance value, as this parameter directly affects circuit tuning and frequency accuracy in the application. ESR variation is secondary to load capacitance compatibility. All substitute parts maintain identical frequency, frequency stability, operating mode, temperature range, and package type classification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Frequency (MHz)	Frequency Stability (ppm)	Load Capacitance (pF)	ESR (Ohms)	Operating Temperature (°C)	Package	Size (mm)	Height Max (mm)	RoHS Status	Inventory (Pcs)
7M-32.000MEEI-T	TXC CORPORATION	32.0000	±10	16	60	-20 ~ 70	4-SMD, No Lead	3.20 x 2.50	0.80	RoHS Compliant	753
403C11E32M00000	CTS-Frequency Controls	32.0000	±10	20	60	-20 ~ 70	4-SMD, No Lead	3.20 x 2.50	0.80	ROHS3 Compliant	3926
ABM8-32.000MHZ-12-B1U-T	Abracon LLC	32.0000	±10	12	40	-20 ~ 70	4-SMD, No Lead	3.20 x 2.50	0.80	ROHS3 Compliant	1804
ECS-320-12-36-CKM-TR	ECS Inc.	32.0000	±10	12	50	-20 ~ 70	4-SMD, No Lead	2.50 x 2.00	0.60	ROHS3 Compliant	4203
ECS-320-12-37-CKM-TR	ECS Inc.	32.0000	±10	12	60	-20 ~ 70	4-SMD, No Lead	2.00 x 1.60	0.55	ROHS3 Compliant	6518
ECS-320-13-42-CKM-TR	ECS Inc.	32.0000	±10	13	40	-20 ~ 70	4-SMD, No Lead	4.00 x 2.50	0.80	Not Specified	24691
ECS-320-16-33B-CKM-TR	ECS Inc.	32.0000	±10	16	40	-20 ~ 70	4-SMD, No Lead	3.20 x 2.50	0.80	ROHS3 Compliant	2770
ECS-320-20-33-CKM-TR	ECS Inc.	32.0000	±10	20	40	-20 ~ 70	4-SMD, No Lead	3.20 x 2.50	0.80	ROHS3 Compliant	4257
FL3200022	Diodes Incorporated	32.0000	±10	16	40	-20 ~ 70	4-SMD, No Lead	3.20 x 2.50	0.75	ROHS3 Compliant	2105
Q 32,0-JXS21-12-10/10-FU-WA-LF	Jauch Quartz	32.0000	±10	12	50	-20 ~ 70	4-SMD, No Lead	2.00 x 1.60	0.55	ROHS3 Compliant	5071
Q 32,0-JXS22-12-10/10-FU-WA-LF	Jauch Quartz	32.0000	±10	12	40	-20 ~ 70	4-SMD, No Lead	2.50 x 2.00	0.60	ROHS3 Compliant	3077

Engineering Selection Recommendations

Direct Electrical Equivalent (16pF Load Capacitance):

ECS-320-16-33B-CKM-TR and FL3200022 are direct electrical equivalents to the 7M-32.000MEEI-T, maintaining identical 16pF load capacitance specification. Both parts are ROHS3 Compliant with Active product status. ECS-320-16-33B-CKM-TR features 40 Ohms ESR compared to the primary part's 60 Ohms ESR, while FL3200022 also specifies 40 Ohms ESR. Both maintain the 3.20mm x 2.50mm footprint and -20°C to 70°C operating range. Selection between these options is based on inventory availability and manufacturer preference.

Load Capacitance Alternatives (12pF, 13pF, 20pF):

Substitute parts with alternative load capacitance values are available from multiple manufacturers. Parts with 12pF load capacitance include ABM8-32.000MHZ-12-B1U-T (Abracon LLC, 40 Ohms ESR), ECS-320-12-36-CKM-TR (ECS Inc., 50 Ohms ESR), ECS-320-12-37-CKM-TR (ECS Inc., 60 Ohms ESR), Q 32,0-JXS21-12-10/10-FU-WA-LF (Jauch Quartz, 50 Ohms ESR), and Q 32,0-JXS22-12-10/10-FU-WA-LF (Jauch Quartz, 40 Ohms ESR). The 13pF option is represented by ECS-320-13-42-CKM-TR (ECS Inc., 40 Ohms ESR). The 20pF option is available as 403C11E32M00000 (CTS-Frequency Controls, 60 Ohms ESR) and ECS-320-20-33-CKM-TR (ECS Inc., 40 Ohms ESR).

Selection of load capacitance alternatives requires circuit design verification to confirm compatibility with the application's tuning network and frequency accuracy requirements. All listed alternatives maintain identical frequency, frequency stability, operating mode, temperature range, and 4-SMD No Lead package classification.

Compliance and Product Status:

All substitute parts listed maintain Active product status. CTS-Frequency Controls 403C11E32M00000, ECS Inc. parts (ECS-320-12-36-CKM-TR, ECS-320-12-37-CKM-TR, ECS-320-16-33B-CKM-TR, ECS-320-20-33-CKM-TR), Abracon LLC ABM8-32.000MHZ-12-B1U-T, Diodes Incorporated FL3200022, and Jauch Quartz parts (Q 32,0-JXS21-12-10/10-FU-WA-LF, Q 32,0-JXS22-12-10/10-FU-WA-LF) are ROHS3 Compliant. The primary part 7M-32.000MEEI-T is RoHS Compliant. All parts are REACH Unaffected and classified under ECCN EAR99 and HTSUS 8541.60.0060.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 12pF load capacitance crystal for the 16pF specification?

A: Load capacitance substitution requires circuit design verification. The 12pF alternatives (ABM8-32.000MHZ-12-B1U-T, ECS-320-12-36-CKM-TR, ECS-320-12-37-CKM-TR, Q 32,0-JXS21-12-10/10-FU-WA-LF, Q 32,0-JXS22-12-10/10-FU-WA-LF) maintain identical frequency and frequency stability specifications. Substitution is valid only when the application circuit is designed to accommodate 12pF load capacitance. Consult the circuit schematic and oscillator IC datasheet to confirm load capacitance compatibility.

Q: What is the difference between 40 Ohms, 50 Ohms, and 60 Ohms ESR specifications?

A: ESR (Equivalent Series Resistance) affects crystal oscillator startup characteristics and power consumption. The primary part 7M-32.000MEEI-T specifies 60 Ohms ESR. Substitute parts with 40 Ohms or 50 Ohms ESR provide lower resistance paths and may reduce startup time. Selection depends on oscillator IC specifications and circuit design requirements. Lower ESR values are generally compatible with circuits designed for higher ESR specifications, but verification with the oscillator IC datasheet is required.

Q: Are the smaller package alternatives (2.00mm x 1.60mm) compatible with the 3.20mm x 2.50mm footprint?

A: Smaller package alternatives such as ECS-320-12-37-CKM-TR (2.00mm x 1.60mm) and Q 32,0-JXS21-12-10/10-FU-WA-LF (2.00mm x 1.60mm) require PCB layout modification. These parts are not pin-compatible with the 3.20mm x 2.50mm footprint. Use of smaller packages is valid only when PCB design permits layout changes. The 3.20mm x 2.50mm footprint is maintained by 7M-32.000MEEI-T, 403C11E32M00000, ABM8-32.000MHZ-12-B1U-T, ECS-320-16-33B-CKM-TR, ECS-320-20-33-CKM-TR, and FL3200022.

Q: Which substitute part has the highest inventory availability?

A: ECS-320-13-42-CKM-TR (ECS Inc.) has the highest inventory with 24,691 pieces in stock. This part specifies 13pF load capacitance and 40 Ohms ESR. If load capacitance compatibility is confirmed in circuit design, this part provides maximum supply availability.

Q: Are all substitute parts RoHS compliant?

A: The primary part 7M-32.000MEEI-T is RoHS Compliant. All substitute parts except ECS-320-13-42-CKM-TR are ROHS3 Compliant. ECS-320-13-42-CKM-TR RoHS status is not specified in the provided data. All parts are REACH Unaffected.

Q: Can I use FL3200022 as a direct replacement for 7M-32.000MEEI-T?

A: FL3200022 (Diodes Incorporated, SaRonix-eCera™ FL series) is a direct electrical equivalent with identical 16pF load capacitance, 32 MHz frequency, ±10ppm stability, and 4-SMD No Lead package. The primary difference is ESR specification: FL3200022 specifies 40 Ohms compared to 60 Ohms for 7M-32.000MEEI-T. FL3200022 is ROHS3 Compliant and maintains the 3.20mm x 2.50mm footprint. Direct substitution is valid when circuit design permits 40 Ohms ESR operation.

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