DLP03LC-7 Equivalent & Substitute Parts

Part Overview

The DLP03LC-7 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-23-3 package. This component provides transient overvoltage protection with a 3.3V reverse standoff voltage and 18V maximum clamping voltage at peak pulse current of 20A (8/20µs).

The DLP03LC-7 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this TVS diode.

Substiute Parts

DLP03LC-7

Diodes IncorporatedIn Stock: 22725DLP03LC-7 Datasheet

Current PartRFQ

SP1002-01JTG

Littelfuse Inc.In Stock: 17165SP1002-01JTG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DLP03LC-7 is determined by the following critical electrical and mechanical parameters:

Electrical Criteria:

• Voltage - Reverse Standoff: Must accommodate the 3.3V nominal operating point
• Voltage - Clamping (Max) @ Ipp: Must not exceed 18V to maintain protection threshold
• Current - Peak Pulse: Must support minimum 20A (8/20µs) pulse handling
• Power - Peak Pulse: Must support minimum 350W dissipation capability

Mechanical Criteria:

• Package / Case: Surface mount form factor compatibility (SOT-23-3 or equivalent footprint)
• Mounting Type: Surface mount technology

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: MSL 1 or better
• Operating Temperature Range: Must cover -55°C to 150°C or equivalent automotive range

The substitute part SP1002-01JTG does not meet the electrical substitution criteria for this application due to significant parameter deviations in voltage ratings and peak pulse current capacity.

Parameter Comparison

Engineering Selection Recommendations

Based on the provided specifications and compliance data:

DLP03LC-7 Status: The part is obsolete and no longer in active production. Continued use requires identification of functionally equivalent alternatives or design modification.

SP1002-01JTG Assessment: This part does not qualify as a direct electrical substitute for the DLP03LC-7. Key deviations include:

• Peak pulse current capacity is 2A versus the required 20A (90% reduction)
• Voltage standoff rating is 6V versus 3.3V (application mismatch)
• Operating temperature maximum is 125°C versus 150°C (reduced thermal range)
• Package form factor differs (SC-70-3 versus SOT-23-3)
• Bidirectional topology versus unidirectional requirement

Both parts maintain ROHS3 compliance and MSL 1 rating. However, electrical parameter misalignment prevents functional substitution in applications designed for the DLP03LC-7 specifications.

Frequently Asked Questions (FAQ)

Q: Can SP1002-01JTG replace DLP03LC-7 in existing designs?

A: No. The SP1002-01JTG does not meet the electrical requirements. The 2A peak pulse current rating is insufficient for applications requiring 20A transient suppression. Voltage standoff and clamping parameters also differ significantly.

Q: What makes a valid substitute for DLP03LC-7?

A: A valid substitute must meet or exceed the following: 3.3V reverse standoff voltage, 18V maximum clamping voltage at peak pulse current, 20A peak pulse current capacity (8/20µs), 350W peak pulse power dissipation, SOT-23-3 package compatibility, and -55°C to 150°C operating temperature range.

Q: Are there package compatibility considerations?

A: Yes. The DLP03LC-7 uses SOT-23-3 (TO-236-3, SC-59) packaging. Substitute parts must use the same package or a mechanically compatible footprint to ensure PCB assembly compatibility without design modification.

Q: Does the obsolete status of DLP03LC-7 affect compliance?

A: The part maintains ROHS3 compliance and AEC-Q101 automotive qualification despite obsolete status. However, obsolescence limits future availability and may require design transition planning for long-term production support.

Q: What is the significance of unidirectional versus bidirectional topology?

A: The DLP03LC-7 is unidirectional (single polarity protection). Bidirectional alternatives provide protection in both directions and are not interchangeable without circuit analysis to confirm polarity requirements.