7B-30.000MBBK-T Equivalent & Substitute Parts

Part Overview

The 7B-30.000MBBK-T is a 30 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in 4-SMD, No Lead package configuration. This part operates at 30 MHz with ±50ppm frequency stability and 20pF load capacitance. The product is currently classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity.

Substiute Parts

7B-30.000MBBK-T

TXC CORPORATIONIn Stock: 10297B-30.000MBBK-T Datasheet

Current PartRFQ

7M-30.000MBBK-T

TXC CORPORATIONIn Stock: 11887M-30.000MBBK-T Datasheet

SimilarRFQ

ECS-300-20-33-TR

ECS Inc.In Stock: 3510ECS-300-20-33-TR Datasheet

SimilarRFQ

7B-30.000MBBK-T

FTSIn Stock: 19607B-30.000MBBK-T Datasheet

Parametric EquivalentRFQ

QT532S-30.000MBBK-T

QSTIn Stock: 1818QT532S-30.000MBBK-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7B-30.000MBBK-T is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Frequency: 30 MHz (exact match required)
• Frequency Stability: ±50ppm (exact match required)
• Load Capacitance: 20pF (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (exact match required)
• Package / Case: 4-SMD, No Lead (exact match required)
• Mounting Type: Surface Mount (exact match required)

Allowable Variation Parameters:

• ESR (Equivalent Series Resistance): 40 Ohms or 60 Ohms (within acceptable circuit design tolerances)
• Physical Dimensions: Variations permitted within 4-SMD, No Lead package envelope
• Packaging Format: Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) formats are interchangeable for procurement
• Manufacturer: Different manufacturers acceptable if all electrical and mechanical parameters align

Substitute parts are grouped into two categories: Direct Equivalents (matching all parameters including ESR) and Parametric Equivalents (matching all critical parameters with ESR variation).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical ESR - 40 Ohms):

The ECS-300-20-33-TR (ECS Inc.), 7B-30.000MBBK-T (FTS), and QT532S-30.000MBBK-T (QST) are direct electrical equivalents to the original 7B-30.000MBBK-T. All three parts match the critical electrical parameters including 40 Ohms ESR. All three substitute parts carry Active product status, ensuring long-term availability. ECS-300-20-33-TR and QT532S-30.000MBBK-T feature reduced physical dimensions (3.20 x 2.50mm vs. 5.00 x 3.20mm) and lower profile height (0.80mm vs. 1.05mm), which may provide layout advantages in space-constrained applications. The FTS-manufactured 7B-30.000MBBK-T maintains identical physical dimensions to the original part.

Parametric Equivalent (ESR Variation - 60 Ohms):

The 7M-30.000MBBK-T (TXC CORPORATION) is a parametric equivalent with all critical electrical parameters matching except ESR, which is specified at 60 Ohms versus 40 Ohms. This part is manufactured by the same original equipment manufacturer and carries Active product status. The 60 Ohms ESR specification represents a 50% increase from the original 40 Ohms value. Circuit design verification is required to confirm ESR tolerance acceptance for the specific application. This part features reduced physical dimensions (3.20 x 2.50mm) and lower profile height (0.80mm).

Compliance and Certification:

All substitute parts maintain RoHS compliance status. ECS-300-20-33-TR and QT532S-30.000MBBK-T carry ROHS3 Compliant designation. All parts specify Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints. REACH compliance information is available for ECS-300-20-33-TR and 7M-30.000MBBK-T.

Frequently Asked Questions (FAQ)

Q: Can the 7M-30.000MBBK-T be used as a direct replacement for the 7B-30.000MBBK-T?

A: The 7M-30.000MBBK-T matches all critical electrical parameters (frequency, stability, load capacitance, operating mode, temperature range) and package type. However, the ESR specification differs: 60 Ohms versus 40 Ohms. Circuit design verification is required to confirm the higher ESR value is acceptable for the specific application. Physical dimensions are also reduced (3.20 x 2.50mm vs. 5.00 x 3.20mm), which may require PCB layout modification.

Q: What is the difference between the ECS-300-20-33-TR and the FTS 7B-30.000MBBK-T?

A: Both parts are direct electrical equivalents with identical frequency, stability, load capacitance, and ESR specifications. The primary differences are manufacturer (ECS Inc. versus FTS) and physical dimensions. ECS-300-20-33-TR is smaller (3.20 x 2.50mm, 0.80mm height) compared to FTS 7B-30.000MBBK-T (5.00 x 3.20mm, 1.05mm height). Both parts carry Active product status and RoHS compliance.

Q: Are there packaging format differences between substitute parts?

A: Yes. The original 7B-30.000MBBK-T is supplied in Cut Tape (CT) & Digi-Reel® format. All substitute parts are supplied in Tape & Reel (TR) format. Both packaging formats are suitable for automated assembly processes. Procurement and handling procedures may differ between formats.

Q: Which substitute part provides the best form-factor compatibility with the original 7B-30.000MBBK-T?

A: The FTS-manufactured 7B-30.000MBBK-T maintains identical physical dimensions (5.00 x 3.20mm) and height (1.05mm) to the original part, requiring no PCB layout modification. This part is a direct electrical equivalent with 40 Ohms ESR and carries Active product status.

Q: Can multiple substitute parts be used interchangeably in the same design?

A: The ECS-300-20-33-TR, FTS 7B-30.000MBBK-T, and QT532S-30.000MBBK-T are direct electrical equivalents and can be used interchangeably from an electrical standpoint. However, physical dimension differences between the smaller ECS and QST parts (3.20 x 2.50mm) and the larger FTS part (5.00 x 3.20mm) require separate PCB layout designs. The 7M-30.000MBBK-T requires circuit design verification due to ESR variation before interchangeable use.

Q: What inventory availability should be considered for production planning?

A: Current inventory levels are: 7B-30.000MBBK-T (original, obsolete) 970 Pcs; 7M-30.000MBBK-T 1137 Pcs; ECS-300-20-33-TR 3400 Pcs; FTS 7B-30.000MBBK-T 1881 Pcs; QT532S-30.000MBBK-T 1794 Pcs. ECS-300-20-33-TR offers the highest current inventory level.