Equivalent & Substitute Parts for TXC CORPORATION 7A08070008 8 MHz Crystal

Part Overview

The TXC CORPORATION 7A08070008 is an 8 MHz fundamental mode crystal oscillator in 2-SMD, No Lead surface mount package with 18pF load capacitance and 80 Ohms equivalent series resistance. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production requirements. The electrical and mechanical specifications of this crystal determine compatibility with alternative manufacturers' offerings in the same frequency and load capacitance category.

Key Parameters

Parameter	Value	Unit
Frequency	8.0000	MHz
Frequency Tolerance	±20	ppm
Load Capacitance	18	pF
ESR (Equivalent Series Resistance)	80	Ohms
Operating Mode	Fundamental	—
Operating Temperature Range	-40°C to 85°C	—
Mounting Type	Surface Mount	—
Package / Case	2-SMD, No Lead	—

Substitute Part Grouping Explanation

Substitution of the TXC CORPORATION 7A08070008 is determined by strict equivalence in the following parameters:

Frequency: 8 MHz (exact match required)
Frequency Tolerance: ±20 ppm (exact match required)
Load Capacitance: 18 pF (exact match required)
Operating Mode: Fundamental (exact match required)
Operating Temperature Range: -40°C to 85°C (exact match required)
Mounting Type: Surface Mount (exact match required)
Package / Case: 2-SMD, No Lead (exact match required)

The ESR parameter may vary within acceptable ranges for circuit operation. Substitute parts are grouped based on their compliance with all mandatory parameters listed above. All identified substitutes meet these criteria and are available from active manufacturers with current product status.

Parameter Comparison

Parameter	TXC 7A08070008	Abracon ABM3-8.000MHZ-D2Y-T	ECS ECS-080-18-23A-JGN-TR	Raltron H130A-8.000-18-2030-EXT-TR
Manufacturer	TXC CORPORATION	Abracon LLC	ECS Inc.	Raltron Electronics
Frequency	8 MHz	8 MHz	8 MHz	8 MHz
Frequency Tolerance	±20 ppm	±20 ppm	±20 ppm	±20 ppm
Frequency Stability	±30 ppm	±30 ppm	±30 ppm	±30 ppm
Load Capacitance	18 pF	18 pF	18 pF	18 pF
ESR	80 Ohms	140 Ohms	80 Ohms	85 Ohms
Operating Mode	Fundamental	Fundamental	Fundamental	Fundamental
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	Not Applicable	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All three substitute parts are functionally equivalent to the TXC CORPORATION 7A08070008 based on the mandatory electrical and mechanical parameters. Selection among substitutes should be based on the following factors:

ECS ECS-080-18-23A-JGN-TR: Matches the original ESR specification of 80 Ohms exactly. Offers ROHS3 compliance and MSL 1 rating. Available in Tape & Reel packaging with 24,414 pieces in stock. Physical dimensions differ slightly (6.00mm x 3.50mm vs. 5.00mm x 3.20mm), requiring PCB layout verification.

Raltron H130A-8.000-18-2030-EXT-TR: ESR of 85 Ohms provides close equivalence to the original 80 Ohms specification. Maintains identical physical dimensions (5.00mm x 3.20mm) to the original part. ROHS3 compliant with MSL 1 rating. Available in Tape & Reel packaging with 6,212 pieces in stock.

Abracon ABM3-8.000MHZ-D2Y-T: ESR of 140 Ohms represents the largest deviation from the original specification. ROHS3 compliant with Not Applicable MSL rating. Available in Cut Tape & Digi-Reel packaging with 27,400 pieces in stock. Lowest seated height (1.30mm) among substitutes.

All substitutes carry ROHS3 compliance and are produced by active manufacturers with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can the Abracon ABM3-8.000MHZ-D2Y-T substitute for the TXC 7A08070008 despite the 140 Ohms ESR difference?

A: The Abracon part meets all mandatory electrical parameters: 8 MHz frequency, ±20 ppm tolerance, 18 pF load capacitance, and fundamental operating mode. The ESR difference of 60 Ohms from the original specification must be evaluated against circuit design margins. Circuit simulation or testing may be required to confirm performance in the specific application.

Q: What is the significance of the physical dimension differences between substitutes?

A: The ECS part measures 6.00mm x 3.50mm compared to the original 5.00mm x 3.20mm. This requires verification that the PCB footprint and component placement accommodate the larger package. The Raltron part maintains identical dimensions to the original, eliminating this concern.

Q: Are all substitutes RoHS compliant?

A: Yes. The original TXC part is RoHS Compliant. All three substitutes are ROHS3 Compliant, which represents a more stringent standard and ensures compatibility with RoHS requirements.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. The Abracon part lists MSL as Not Applicable, indicating it does not require moisture sensitivity classification.

Q: Which substitute offers the best inventory availability?

A: Abracon ABM3-8.000MHZ-D2Y-T has the highest inventory with 27,400 pieces in stock, followed by ECS with 24,414 pieces, and Raltron with 6,212 pieces.

Q: Can I use these substitutes interchangeably in production?

A: All three substitutes are electrically and mechanically equivalent based on the mandatory parameters. However, the ESR variations and physical dimension differences require design verification. Once qualified for a specific application, a substitute may be used interchangeably with the original part within the same design.

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