CM1215-04SO Equivalent & Substitute Parts

Part Overview

The CM1215-04SO is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in surface mount applications. This component features a 4.8V typical clamping voltage with 1A peak pulse current capability in a SOT-23-6 package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

CM1215-04SO

onsemiIn Stock: 2350CM1215-04SO Datasheet

Current PartRFQ

D1213A-04TS-7

Diodes IncorporatedIn Stock: 3188D1213A-04TS-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CM1215-04SO is determined by the following critical parameters:

• Steering Type: Rail to Rail configuration with 4 unidirectional channels
• Clamping Voltage: 4.8V typical clamping voltage at peak pulse current
• Peak Pulse Current: 1A (8/20µs) capability
• Package Compatibility: SOT-23-6 surface mount package
• Functional Category: TVS diode for transient voltage suppression

The D1213A-04TS-7 qualifies as a substitute based on matching steering type, channel configuration, peak pulse current rating, and package form factor. Voltage characteristics differ within acceptable operational ranges for general-purpose protection applications.

Parameter Comparison

Engineering Selection Recommendations

The D1213A-04TS-7 is an active product with automotive-grade qualification (AEC-Q101) and extended operating temperature range (-65°C ~ 150°C), providing superior long-term availability and reliability assurance compared to the obsolete CM1215-04SO. Both components share identical steering architecture, channel count, and peak pulse current specifications, ensuring functional compatibility in rail-to-rail protection circuits.

The D1213A-04TS-7 exhibits a higher clamping voltage (10V typical versus 4.8V typical), which requires circuit-level evaluation to confirm suitability for the protected signal levels in the target application. The substitute's automotive qualification and active production status support supply chain continuity and design longevity.

Frequently Asked Questions (FAQ)

Q: Can the D1213A-04TS-7 directly replace the CM1215-04SO in existing designs?

A: Direct replacement requires verification that the higher clamping voltage (10V typical) is compatible with the protected circuit's voltage thresholds. Both components share identical steering type, channel configuration, peak pulse current rating, and SOT-23-6 package form factor. Circuit simulation or testing is necessary to confirm performance equivalence for the specific application.

Q: What is the primary difference between these two TVS diodes?

A: The main difference is clamping voltage: CM1215-04SO clamps at 4.8V typical, while D1213A-04TS-7 clamps at 10V typical. The D1213A-04TS-7 also provides automotive qualification, extended temperature range, and active product status, whereas the CM1215-04SO is obsolete.

Q: Are the packages physically compatible?

A: Both components use SOT-23-6 surface mount packages. The D1213A-04TS-7 is available in TSOT-26 supplier packaging, which is a thin variant of SOT-23-6. Physical footprint compatibility exists, though PCB layout verification is recommended for high-density designs.

Q: Does the D1213A-04TS-7 offer better environmental protection?

A: The D1213A-04TS-7 includes power line protection capability and operates across a wider temperature range (-65°C ~ 150°C versus -40°C ~ 125°C). These characteristics may provide enhanced robustness in demanding environments, subject to application requirements.

Q: What compliance certifications apply to these parts?

A: The CM1215-04SO carries REACH Unaffected and EAR99 ECCN status. The D1213A-04TS-7 adds RoHS3 compliance and AEC-Q101 automotive qualification, providing additional regulatory and quality assurance documentation for regulated applications.