CDA8S03-G Equivalent & Substitute Parts

Part Overview

The CDA8S03-G is a Transient Voltage Suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component is classified as a steering (rail to rail) unidirectional TVS diode in SOT-23-3 packaging.

The CDA8S03-G has reached obsolete product status, making it necessary to identify qualified substitute components that maintain functional and mechanical compatibility. Substitute parts must preserve the same package form factor, mounting type, and core electrical characteristics to ensure direct replacement capability in existing designs.

Substiute Parts

CDA8S03-G

Comchip TechnologyIn Stock: 4347CDA8S03-G Datasheet

Current PartRFQ

DLPT05-7-F

Diodes IncorporatedIn Stock: 30524DLPT05-7-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDA8S03-G is based on the following critical parameters that must remain consistent:

Mechanical Compatibility:

• Package type: SOT-23-3 (TO-236-3, SC-59)
• Mounting type: Surface Mount
• Unidirectional channel configuration: 1 channel
• Device classification: Steering (Rail to Rail) TVS diode

Electrical Compatibility:

• Application category: General Purpose overvoltage protection
• Functional type: Transient Voltage Suppressor diode

Regulatory & Environmental Compliance:

• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected
• ECCN classification: EAR99
• HTSUS code: 8541.10.0080

The substitute part DLPT05-7-F from Diodes Incorporated satisfies all mechanical and functional requirements for direct replacement of the CDA8S03-G.

Parameter Comparison

Engineering Selection Recommendations

The DLPT05-7-F is qualified as a direct substitute for the CDA8S03-G based on identical mechanical packaging, matching functional classification, and equivalent regulatory compliance status.

Product Status Consideration: The CDA8S03-G is obsolete, while DLPT05-7-F carries Last Time Buy status, indicating continued but limited availability. Selection of DLPT05-7-F ensures access to an actively supported component with established supply channels.

Compliance Alignment: Both components maintain REACH Unaffected status and EAR99 ECCN classification, ensuring no change to regulatory documentation or export compliance requirements. The DLPT05-7-F additionally provides ROHS3 Compliant certification, meeting enhanced environmental standards.

Packaging & Handling: Both parts share identical MSL rating (1 - Unlimited), eliminating any change to moisture sensitivity handling procedures or storage requirements.

Frequently Asked Questions (FAQ)

Q: Can DLPT05-7-F be used as a direct pin-for-pin replacement for CDA8S03-G?

A: Yes. Both components use identical SOT-23-3 packaging with matching pin configurations for steering (rail to rail) unidirectional TVS diodes. No PCB layout modifications are required.

Q: Are there differences in operating temperature ranges between these parts?

A: The CDA8S03-G specifies -40°C to 85°C (TA), while DLPT05-7-F specifies -55°C to 150°C (TJ). The DLPT05-7-F provides an extended operating range, making it suitable for applications requiring broader temperature performance.

Q: What is the significance of the Last Time Buy status for DLPT05-7-F?

A: Last Time Buy indicates that Diodes Incorporated will continue to produce DLPT05-7-F for a defined period before discontinuation. This status provides a clear supply window for component procurement and design transition planning.

Q: Do regulatory certifications change when substituting to DLPT05-7-F?

A: No. Both components maintain REACH Unaffected status and EAR99 ECCN classification. The DLPT05-7-F adds ROHS3 Compliant certification, which enhances but does not alter existing compliance requirements.

Q: Are there any moisture sensitivity or handling differences?

A: No. Both components carry identical MSL rating of 1 (Unlimited), requiring no changes to storage, handling, or reflow procedures.