STF202-22T1 Equivalent & Substitute Parts

Part Overview

The STF202-22T1 is a 2nd order RC (Pi) EMI filter with 22 Ohm resistance and 68 pF capacitance per channel, designed for low-pass filtering applications in USB circuits. This component features integrated ESD protection and operates across the industrial temperature range of -55°C to 125°C in a compact SC-74/SOT-457 surface mount package.

The STF202-22T1 carries an obsolete product status, making substitute parts necessary for new designs and ongoing production requirements. Alternative components with equivalent electrical and mechanical specifications are available to maintain design continuity.

Substiute Parts

STF202-22T1

onsemiIn Stock: 1470STF202-22T1 Datasheet

Current PartRFQ

STF202-22T1G

onsemiIn Stock: 94453STF202-22T1G Datasheet

DirectRFQ

SN65220DBVT

Texas InstrumentsIn Stock: 60374SN65220DBVT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the STF202-22T1 is determined by strict equivalence across the following critical parameters:

Direct Equivalent Criteria:

• Filter technology: RC (Pi) topology
• Filter order: 2nd order low pass
• Number of channels: 2
• Resistance value: 22 Ohms per channel
• Capacitance value: 68 pF
• Package type: SC-74/SOT-457
• ESD protection capability
• Operating temperature range: -55°C to 125°C
• Application suitability: USB circuits

Similar Component Criteria:

• Alternative circuit protection approach for USB applications
• Compatible mounting type and footprint considerations
• Equivalent operating temperature range
• Suitable for transient voltage suppression in USB signal paths

Parameter Comparison

Engineering Selection Recommendations

STF202-22T1G (Direct Equivalent): STF202-22T1G is the primary substitute for STF202-22T1. Both components share identical electrical specifications, filter topology, channel configuration, and resistance/capacitance values. The STF202-22T1G maintains the same SC-74/SOT-457 package footprint and operating temperature range. The key distinction is product status: STF202-22T1G carries Last Time Buy status with significantly higher inventory availability (94,443 units), compared to the obsolete STF202-22T1. Additionally, STF202-22T1G achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. For new designs and production continuity, STF202-22T1G is the recommended direct replacement.

SN65220DBVT (Similar Component): SN65220DBVT is a Texas Instruments transient voltage suppressor device with 7V clamping voltage, designed for USB circuit protection. This component differs fundamentally in technology (TVS versus RC Pi filter) and package format (SOT-23-6 versus SC-74/SOT-457). SN65220DBVT provides alternative circuit protection for USB applications with equivalent operating temperature range and ROHS3 compliance. Selection of this component requires circuit redesign to accommodate the different protection topology and package footprint. This substitute is suitable only when the application permits replacement of the RC filter function with TVS-based transient suppression.

Frequently Asked Questions (FAQ)

Q: Can STF202-22T1G be used as a direct replacement for STF202-22T1? A: Yes. STF202-22T1G is electrically and mechanically equivalent to STF202-22T1. Both components feature identical RC (Pi) filter topology, 2nd order configuration, 22 Ohm resistance, 68 pF capacitance, dual-channel design, and SC-74/SOT-457 packaging. The components are pin-compatible and footprint-compatible for direct PCB substitution.

Q: What is the primary advantage of STF202-22T1G over the original STF202-22T1? A: STF202-22T1G offers improved product availability (94,443 units in stock versus 1,370 units), Last Time Buy status providing extended procurement windows, and ROHS3 compliance for regulatory alignment. Electrical performance and mechanical specifications remain identical.

Q: Is SN65220DBVT a direct replacement for STF202-22T1? A: No. SN65220DBVT is a similar component for USB applications but employs different circuit protection technology (transient voltage suppression versus RC filtering). The package format differs (SOT-23-6 versus SC-74/SOT-457), requiring PCB redesign. This component is suitable only when the application can accommodate TVS-based protection instead of RC filter functionality.

Q: What are the key parameters that determine substitution compatibility? A: For RC (Pi) EMI filter equivalence, the critical parameters are filter topology, filter order (2nd), number of channels (2), resistance value (22 Ohms), capacitance value (68 pF), package type (SC-74/SOT-457), operating temperature range (-55°C to 125°C), and ESD protection capability. Deviation in any of these parameters indicates a non-equivalent component.

Q: Are there package footprint differences between STF202-22T1 and STF202-22T1G? A: No. Both components use the SC-74/SOT-457 package with identical dimensions: 3.00mm length, 1.50mm width, and 1.09mm height. PCB footprints are identical, enabling direct substitution without layout modifications.

Q: What compliance certifications apply to these components? A: STF202-22T1 is RoHS non-compliant. STF202-22T1G and SN65220DBVT are both ROHS3 compliant. All three components are REACH Unaffected and classified under ECCN EAR99. Moisture sensitivity level is 1 (Unlimited) for all components.