CTES033V3-G Equivalent & Substitute Parts

Part Overview

The CTES033V3-G is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 3.3V reverse standoff voltage with an 8V maximum clamping voltage and 17A peak pulse current capability in the SOT-23-3 package. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and component procurement.

Substiute Parts

CTES033V3-G

Comchip TechnologyIn Stock: 9387CTES033V3-G Datasheet

Current PartRFQ

ESD3V3AP-TP

Micro Commercial CoIn Stock: 1662ESD3V3AP-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CTES033V3-G is determined by the following critical electrical and mechanical parameters:

• Voltage Rating Compatibility: Reverse standoff voltage of 3.3V and breakdown voltage minimum of 4V or higher
• Clamping Performance: Maximum clamping voltage at peak pulse current must not exceed 8V to maintain circuit protection integrity
• Peak Pulse Current: Minimum 13.3A capability to handle transient events
• Package Compatibility: SOT-23-3 surface-mount package for direct PCB footprint compatibility
• Thermal Range: Operating temperature range of -55°C to 125°C minimum
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The ESD3V3AP-TP from Micro Commercial Co meets these substitution criteria while offering active product status and extended temperature range capability.

Parameter Comparison

Engineering Selection Recommendations

The ESD3V3AP-TP is the designated manufacturer-recommended substitute for the obsolete CTES033V3-G. Both components maintain identical regulatory compliance status (ROHS3 compliant, REACH unaffected) and moisture sensitivity classification. The substitute part offers the advantage of active product status, ensuring long-term availability and supply chain continuity.

The ESD3V3AP-TP provides superior clamping performance at 7.5V compared to the original 8V specification, delivering enhanced circuit protection. The extended operating temperature range of -55°C to 150°C provides additional thermal margin for demanding applications. Peak pulse current of 13.3A remains adequate for general-purpose transient suppression in the specified voltage class.

Both components share identical package geometry (SOT-23-3) and pinout configuration, enabling direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the ESD3V3AP-TP directly replace the CTES033V3-G without PCB modifications?

A: Yes. Both components use the SOT-23-3 package with identical pinout and footprint geometry, allowing direct substitution without PCB layout changes.

Q: What is the significance of the lower peak pulse current rating in the substitute part?

A: The ESD3V3AP-TP provides 13.3A peak pulse current versus 17A in the original part. For general-purpose applications within the 3.3V protection class, this current rating remains sufficient. Circuit-specific transient current requirements must be evaluated against the substitute part's specification.

Q: How does the improved clamping voltage affect circuit protection?

A: The ESD3V3AP-TP clamps at 7.5V maximum versus 8V in the original part, providing tighter voltage regulation and enhanced protection margin for sensitive downstream components.

Q: Are there any compliance or certification differences between the two parts?

A: Both components maintain identical ROHS3 compliance and REACH unaffected status. Moisture sensitivity level is identical at MSL 1 (Unlimited). No compliance differences exist.

Q: What is the advantage of the extended temperature range in the substitute part?

A: The ESD3V3AP-TP operates to 150°C junction temperature versus 125°C in the original part, providing additional thermal headroom for applications in elevated ambient or high-power environments.