7M-30.000MBBK-T Equivalent & Substitute Parts

Part Overview

The 7M-30.000MBBK-T is a 30 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION. This surface mount device is designed for applications requiring precise frequency generation with ±50ppm stability and 20pF load capacitance. The part is currently in active production status with 1137 pieces available in inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the specified tolerances, enabling component interchangeability in circuit designs without functional degradation.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Frequency	30.0000	MHz	Critical - Must match exactly
Frequency Stability	±50	ppm	Critical - Determines timing accuracy
Load Capacitance	20	pF	Critical - Circuit design parameter
ESR (Equivalent Series Resistance)	60	Ohms	Important - Affects oscillator startup and stability
Operating Temperature Range	-20 to 70	°C	Critical - Application environment requirement
Package Type	4-SMD, No Lead	-	Critical - PCB assembly compatibility
Physical Dimensions	3.20 x 2.50 x 0.80	mm	Critical - PCB footprint compatibility
Moisture Sensitivity Level	1 (Unlimited)	-	Important - Storage and handling requirements
RoHS Compliance	Compliant	-	Important - Regulatory requirement

Substitute Part Grouping Explanation

Substitute parts for the 7M-30.000MBBK-T are identified based on strict equivalence of the following parameters:

Critical Matching Parameters:

Frequency: 30.0000 MHz (exact match required)
Frequency Stability: ±50ppm (tolerance band must be equal or tighter)
Load Capacitance: 20pF (exact match required)
Operating Temperature Range: -20°C to 70°C (minimum coverage required)
Package Type: 4-SMD, No Lead (footprint compatibility)
Physical Dimensions: 3.20mm L x 2.50mm W x 0.80mm H maximum (PCB placement compatibility)

Secondary Compatibility Parameters:

Moisture Sensitivity Level: 1 (Unlimited) or equivalent
RoHS Compliance Status: Active product with current compliance certification

Parameter Variance Allowed:

ESR (Equivalent Series Resistance): Substitute parts with lower ESR values (40 Ohms vs. 60 Ohms) are acceptable as they provide improved oscillator performance characteristics without circuit redesign requirements.

Parameter Comparison

Parameter	7M-30.000MBBK-T (TXC)	ECS-300-20-33-TR (ECS Inc.)	Compatibility Status
Manufacturer	TXC CORPORATION	ECS Inc.	Different manufacturer
Frequency	30.0000 MHz	30.0000 MHz	Equivalent
Frequency Stability	±50ppm	±50ppm	Equivalent
Frequency Tolerance	±50ppm	±50ppm	Equivalent
Load Capacitance	20pF	20pF	Equivalent
ESR	60 Ohms	40 Ohms	Substitute has lower ESR
Operating Mode	Fundamental	Fundamental	Equivalent
Operating Temperature	-20°C to 70°C	-20°C to 70°C	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	4-SMD, No Lead	4-SMD, No Lead	Equivalent
Size / Dimension	3.20 x 2.50 x 0.80 mm	3.20 x 2.50 x 0.80 mm	Equivalent
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both compliant
MSL	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
ECCN	EAR99	EAR99	Equivalent
HTSUS Code	8541.60.0060	8541.60.0060	Equivalent
Inventory Status	1137 Pcs New Original	3400 Pcs New Original	Substitute has higher availability

Engineering Selection Recommendations

Primary Part Selection (7M-30.000MBBK-T): The TXC CORPORATION 7M-30.000MBBK-T remains the specified component when original design validation and qualification have been completed against this exact part number. Active product status and RoHS compliance certification support continued procurement.

Substitute Part Selection (ECS-300-20-33-TR): The ECS Inc. ECS-300-20-33-TR is electrically and mechanically equivalent for direct substitution. All critical parameters match the primary part specification. The lower ESR value (40 Ohms versus 60 Ohms) provides improved oscillator startup characteristics and reduced power consumption without requiring circuit modifications. Both parts maintain identical frequency, load capacitance, temperature range, and physical dimensions. ROHS3 compliance status meets or exceeds RoHS requirements. Higher inventory availability (3400 pieces) supports supply chain continuity.

Selection Criteria:

Use the primary part when design qualification is specific to TXC CORPORATION manufacturing
Use the substitute part when supply constraints exist or when improved ESR performance is beneficial
Both parts are suitable for applications requiring 30 MHz fundamental mode operation with ±50ppm stability in -20°C to 70°C environments
No circuit redesign is required when switching between these parts

Frequently Asked Questions (FAQ)

Q: Can the ECS-300-20-33-TR directly replace the 7M-30.000MBBK-T without PCB modifications?

A: Yes. Both parts share identical physical dimensions (3.20mm x 2.50mm x 0.80mm), package type (4-SMD, No Lead), and electrical specifications (30 MHz, ±50ppm, 20pF load capacitance). The PCB footprint and circuit connections remain unchanged.

Q: What is the significance of the different ESR values (60 Ohms vs. 40 Ohms)?

A: ESR affects oscillator startup time and power consumption. The ECS-300-20-33-TR with 40 Ohms ESR provides faster startup and lower drive power requirements compared to the 60 Ohms ESR of the 7M-30.000MBBK-T. Both values are within acceptable ranges for standard oscillator circuits and do not require design modifications.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the 7M-30.000MBBK-T and ECS-300-20-33-TR operate across -20°C to 70°C with identical frequency stability (±50ppm) throughout this range.

Q: What are the compliance differences between RoHS and ROHS3?

A: ROHS3 represents the current revision of the RoHS Directive with updated substance restrictions. The ECS-300-20-33-TR ROHS3 compliance exceeds the RoHS Compliant status of the 7M-30.000MBBK-T, ensuring compatibility with current regulatory requirements.

Q: Is there a difference in moisture sensitivity between these parts?

A: No. Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related storage or handling restrictions.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. The ECS-300-20-33-TR offers higher inventory availability and improved ESR characteristics. The 7M-30.000MBBK-T is appropriate when TXC CORPORATION sourcing is a specific requirement.

Q: Are both parts available in Tape & Reel packaging?

A: Yes. Both the 7M-30.000MBBK-T and ECS-300-20-33-TR are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes.

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