SRV05-4B-TP Equivalent & Substitute Parts

Part Overview

The SRV05-4B-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for ESD protection in surface mount applications. This steering TVS diode features four unidirectional channels and operates across a temperature range of -55°C to 150°C. The device is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The SRV05-4B-TP provides 5V reverse standoff voltage with a 12.5V maximum clamping voltage and 5A peak pulse current capability in an SOT-723 package.

Substiute Parts

SRV05-4B-TP

Micro Commercial CoIn Stock: 1015SRV05-4B-TP Datasheet

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SRV05-4C-TP

Micro Commercial CoIn Stock: 1963SRV05-4C-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SRV05-4B-TP is determined by the following critical parameters that must remain compatible:

Mandatory Compatibility Parameters:

• Voltage - Reverse Standoff (Typ): 5V (Max)
• Voltage - Breakdown (Min): 6V or higher
• Type: Steering (Rail to Rail)
• Unidirectional Channels: 4
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: May increase from 12.5V
• Current - Peak Pulse: May increase from 5A
• Power - Peak Pulse: May increase from 90W
• Package / Case: SOT-723 or SOT-23-6 (both surface mount variants)
• Operating Temperature: May vary within industrial ranges
• Product Status: Active status preferred for ongoing availability

The SRV05-4C-TP qualifies as a direct substitute based on matching reverse standoff voltage, steering topology, four-channel configuration, surface mount technology, and RoHS3 compliance. Enhanced electrical performance parameters (18V clamping, 17A peak pulse, 300W peak power) provide superior transient suppression capability while maintaining backward compatibility with the original circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The SRV05-4C-TP is the qualified substitute for the obsolete SRV05-4B-TP. Both devices share identical reverse standoff voltage (5V), steering topology, four-channel configuration, and RoHS3 compliance status. The substitute part maintains full electrical compatibility while offering enhanced performance specifications.

Product Status Consideration: The SRV05-4B-TP is classified as obsolete, creating supply chain risk for new production and long-term support. The SRV05-4C-TP maintains active product status with Micro Commercial Co, ensuring continued availability and manufacturing support.

Compliance Status: Both parts are ROHS3 compliant and feature MSL 1 (Unlimited) moisture sensitivity rating, confirming equivalent environmental and regulatory compliance.

Package Consideration: The substitute transitions from SOT-723 to SOT-23-6 packaging. Both are surface mount configurations suitable for automated assembly. PCB layout modifications may be required to accommodate the different package footprint.

Temperature Range: The main part operates to 150°C junction temperature, while the substitute operates to 125°C. Applications requiring operation above 125°C require thermal analysis to confirm the substitute remains within acceptable operating limits.

Frequently Asked Questions (FAQ)

Q: Can the SRV05-4C-TP directly replace the SRV05-4B-TP without circuit modifications?

A: The SRV05-4C-TP provides electrical substitution based on matching reverse standoff voltage, steering topology, and four-channel configuration. PCB layout modifications are required due to package footprint differences between SOT-723 and SOT-23-6. Thermal design review is necessary for applications operating above 125°C junction temperature.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by reverse standoff voltage (5V maximum), breakdown voltage (6V minimum), steering topology, four unidirectional channels, and surface mount technology. The SRV05-4C-TP meets all these requirements while providing enhanced clamping voltage (18V), peak pulse current (17A), and peak power (300W) capabilities.

Q: Are there compliance or certification differences between these parts?

A: Both the SRV05-4B-TP and SRV05-4C-TP are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The substitute part includes REACH Unaffected status and EAR99 ECCN classification. No compliance barriers exist for substitution.

Q: How does the package change from SOT-723 to SOT-23-6 affect board design?

A: SOT-723 and SOT-23-6 are both surface mount packages but feature different physical dimensions and pin configurations. PCB footprint redesign is required, including land pattern modifications and trace routing adjustments. Component placement density may be affected due to the larger SOT-23-6 package size.

Q: What is the impact of the lower maximum operating temperature on the substitute part?

A: The SRV05-4B-TP operates to 150°C junction temperature, while the SRV05-4C-TP operates to 125°C. Applications with junction temperatures between 125°C and 150°C require thermal analysis to confirm the substitute remains within acceptable operating limits. Most general-purpose ESD protection applications operate well below 125°C and are unaffected by this difference.

Q: Why is the SRV05-4B-TP classified as obsolete?

A: Product obsolescence is determined by manufacturer discontinuation decisions. The SRV05-4C-TP maintains active status, providing continued manufacturing support and supply chain availability for new designs and production requirements.