CPDVR085V0U Equivalent & Substitute Parts

Part Overview

The CPDVR085V0U is a 4-channel unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection applications. This component features a 5V reverse standoff voltage with a 12.5V maximum clamping voltage and 16A peak pulse current rating in an SOT-383F surface mount package.

The CPDVR085V0U is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and ongoing support of existing systems.

Substiute Parts

CPDVR085V0U

Comchip TechnologyIn Stock: 1183CPDVR085V0U Datasheet

Current PartRFQ

SMF05T1G

onsemiIn Stock: 80291SMF05T1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPDVR085V0U is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 5V
• Voltage - Breakdown (Min): 6V
• Voltage - Clamping (Max) @ Ipp: 12.5V
• Current - Peak Pulse (8/20µs): minimum 12A
• Power - Peak Pulse: 200W
• Unidirectional Channels: 4
• Type: Zener
• Mounting Type: Surface Mount
• Package compatibility: SOT-383F or equivalent 5-pin surface mount packages

The SMF05T1G from onsemi meets these substitution criteria. It maintains identical voltage specifications (5V standoff, 6V breakdown, 12.5V clamping) and equivalent current handling (12A peak pulse), with the same power dissipation rating. The SMF05T1G is packaged in SC-88A (SC-70-5/SOT-353), a functionally compatible 5-pin surface mount package suitable for direct replacement in PCB layouts designed for the original SOT-383F footprint.

Parameter Comparison

Engineering Selection Recommendations

The SMF05T1G is the primary substitute for the obsolete CPDVR085V0U. Both components share identical voltage protection specifications and equivalent power dissipation characteristics. The SMF05T1G offers the advantage of active product status, ensuring ongoing availability and manufacturing support.

The SMF05T1G carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. Both components maintain REACH Unaffected status, confirming compliance with chemical substance restrictions.

The peak pulse current specification of the SMF05T1G (12A) is lower than the original part (16A). This difference must be evaluated against the actual transient current requirements of the protected circuit. If the application demands peak pulse currents exceeding 12A, alternative substitutes with higher current ratings must be identified.

Package footprint compatibility between SOT-383F and SC-88A (SC-70-5/SOT-353) requires PCB layout verification. Both are 5-pin surface mount packages, but physical dimensions and pin spacing may differ. Confirm mechanical fit before production implementation.

Frequently Asked Questions (FAQ)

Q: Can the SMF05T1G directly replace the CPDVR085V0U without PCB modifications?

A: Electrical substitution is valid based on voltage and power specifications. However, package footprints differ (SOT-383F versus SC-88A/SOT-353). PCB layout verification is required to confirm mechanical compatibility and pin alignment before implementation.

Q: What is the significance of the 4A difference in peak pulse current (16A vs. 12A)?

A: The SMF05T1G peak pulse current rating is 12A compared to the original 16A. This represents a 25% reduction in transient current handling capacity. The substitution is valid only if the protected circuit's actual transient current requirements do not exceed 12A. Circuit analysis must confirm this parameter is within acceptable margins.

Q: Why is the CPDVR085V0U obsolete?

A: The product status reflects Comchip Technology's discontinuation of this component. The SMF05T1G from onsemi is an active product with ongoing manufacturing support, making it the recommended alternative for new designs and production continuity.

Q: Are there compliance differences between the two parts?

A: The SMF05T1G carries ROHS3 compliance certification, while the CPDVR085V0U compliance status is not specified. Both components maintain REACH Unaffected status. For applications requiring specific environmental certifications, the SMF05T1G's ROHS3 compliance provides documented regulatory alignment.

Q: What is the capacitance specification of the SMF05T1G?

A: The SMF05T1G has a capacitance of 90pF at 1MHz. This parameter was not specified for the CPDVR085V0U. Capacitance may affect high-frequency circuit performance; verify this specification against circuit requirements if operating in high-frequency transient environments.

Q: What is the operating temperature range for these components?

A: The operating temperature range for the SMF05T1G is -55°C to 150°C (TJ). The CPDVR085V0U operating temperature was not specified in available documentation. Confirm temperature requirements for your application environment.