CDDFN2-T4.7C Equivalent & Substitute Parts

Part Overview

The CDDFN2-T4.7C is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 5V reverse standoff voltage, 15V maximum clamping voltage, and 5A peak pulse current capability in a compact 2-DFN (1x0.6mm) package. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and component procurement.

Substiute Parts

CDDFN2-T4.7C

Bourns Inc.In Stock: 28224CDDFN2-T4.7C Datasheet

Current PartRFQ

CDDFN2-T5.0LC

Bourns Inc.In Stock: 77115CDDFN2-T5.0LC Datasheet

SimilarRFQ

ACPDQC5V0-HF

Comchip TechnologyIn Stock: 1544ACPDQC5V0-HF Datasheet

SimilarRFQ

SP1003-01ETG

Littelfuse Inc.In Stock: 75290SP1003-01ETG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDDFN2-T4.7C is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff: 5V
• Voltage - Breakdown (Min): 5.1V minimum
• Voltage - Clamping (Max) @ Ipp: 15V or lower
• Current - Peak Pulse (8/20µs): 5A or higher
• Type: Zener (bidirectional)
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant

Secondary Considerations:

• Package compatibility (2-DFN preferred for form factor equivalence)
• Operating temperature range (-40°C minimum to 125°C maximum preferred)
• Capacitance characteristics (15pF @ 1MHz baseline)

The three substitute parts listed below meet the primary electrical criteria while offering varying package options and product status conditions.

Parameter Comparison

Engineering Selection Recommendations

CDDFN2-T5.0LC (Bourns Inc.): This substitute maintains manufacturer continuity as an active product from Bourns Inc. with identical reverse standoff voltage (5V) and matching 2-DFN package form factor. The higher clamping voltage (25V typical) and lower capacitance (0.5pF) represent trade-offs; this part is suitable where higher transient voltage tolerance is acceptable. Operating temperature range is reduced to -40°C ~ 85°C. ROHS3 compliance is maintained.

ACPDQC5V0-HF (Comchip Technology): This substitute provides exact electrical parameter matching to the main part: 5V reverse standoff, 5.1V breakdown minimum, 15V clamping voltage, and 5A peak pulse current. The SOD-923 package represents a different form factor requiring PCB layout modification. This part carries AEC-Q101 automotive qualification, providing enhanced reliability documentation. ROHS3 compliance is maintained.

SP1003-01ETG (Littelfuse Inc.): This substitute offers superior peak pulse current capability (7A versus 5A) and lower clamping voltage (12V typical), providing enhanced protection margins. The SOD-882 package differs from the original 2-DFN form factor. Operating temperature range matches the main part (-40°C ~ 125°C). AEC-Q101 automotive qualification is included. ROHS3 compliance is maintained.

Selection should prioritize active product status and compliance certifications. Package compatibility with existing PCB designs is a critical mechanical consideration.

Frequently Asked Questions (FAQ)

Q: Can CDDFN2-T5.0LC be used as a direct replacement for CDDFN2-T4.7C?

A: CDDFN2-T5.0LC meets the primary electrical criteria (5V reverse standoff, 5.1V minimum breakdown) and maintains the same 2-DFN package form factor, enabling direct PCB substitution. However, the higher clamping voltage (25V typical versus 15V) and reduced operating temperature range (-40°C ~ 85°C versus -40°C ~ 125°C) must be evaluated against circuit requirements.

Q: What are the package compatibility implications of using ACPDQC5V0-HF or SP1003-01ETG?

A: Both ACPDQC5V0-HF (SOD-923) and SP1003-01ETG (SOD-882) employ different package geometries than the original 2-DFN. PCB footprint redesign is required for these substitutes. Verify land pattern dimensions and thermal performance characteristics before implementation.

Q: How do the electrical parameters differ between the three substitutes?

A: ACPDQC5V0-HF provides exact parameter matching (15V clamping, 5A peak pulse). CDDFN2-T5.0LC increases clamping voltage to 25V typical. SP1003-01ETG reduces clamping voltage to 12V typical while increasing peak pulse current to 7A. Selection depends on circuit protection requirements and thermal constraints.

Q: Are all substitutes RoHS3 compliant?

A: Yes. CDDFN2-T5.0LC, ACPDQC5V0-HF, and SP1003-01ETG are all ROHS3 compliant, matching the compliance status of the original CDDFN2-T4.7C.

Q: Which substitutes carry automotive qualification?

A: ACPDQC5V0-HF and SP1003-01ETG both carry AEC-Q101 automotive qualification. CDDFN2-T5.0LC does not specify automotive qualification in the provided data.

Q: What is the significance of the operating temperature range differences?

A: The main part and SP1003-01ETG support -40°C ~ 125°C operation. CDDFN2-T5.0LC is limited to -40°C ~ 85°C. For applications requiring full -40°C ~ 125°C operation, SP1003-01ETG or the original part are preferred.