LCDA05.T Equivalent & Substitute Parts

Part Overview

The LCDA05.T is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Semtech Corporation, designed for general-purpose overvoltage protection in surface-mount applications. This 8-SO package device provides 5V reverse standoff voltage with 11V maximum clamping voltage and 5A peak pulse current capability. The part is currently in active production status with 1113 units available in new original inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

LCDA05.T

Semtech CorporationIn Stock: 1142LCDA05.T Datasheet

Current PartRFQ

LCDA05.TBT

Semtech CorporationIn Stock: 18303LCDA05.TBT Datasheet

DirectRFQ

LCDA05

SMC Diode SolutionsIn Stock: 10068LCDA05 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LCDA05.T are identified based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff: 5V (Max)
• Voltage - Breakdown (Min): 6V
• Voltage - Clamping (Max) @ Ipp: 11V or lower
• Current - Peak Pulse: 5A or greater
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 125°C minimum

Identified Substitutes:

1. LCDA05.TBT (Semtech Corporation) — Direct equivalent with identical electrical specifications and same 8-SO package. Differs only in packaging format (Cut Tape & Digi-Reel) and RoHS certification variant (ROHS3 vs. RoHS Compliant).

2. LCDA05 (SMC Diode Solutions) — Partial substitute with compatible reverse standoff and breakdown voltages. Differs in clamping voltage (9.8V vs. 11V), peak pulse current (1A vs. 5A), and bidirectional channels (4 vs. 2). Suitable only for applications with lower current requirements and higher voltage tolerance margins.

Parameter Comparison

Engineering Selection Recommendations

LCDA05.TBT (Semtech Corporation) is the primary direct substitute for LCDA05.T. Both parts are manufactured by Semtech Corporation with identical electrical specifications, thermal operating range, and package geometry. The LCDA05.TBT maintains full compatibility with designs specified for LCDA05.T. The only functional difference is packaging format: LCDA05.TBT is supplied in Cut Tape and Digi-Reel formats, while LCDA05.T packaging format is not specified in the provided data. Both parts carry active product status and meet RoHS compliance requirements (ROHS3 for LCDA05.TBT provides enhanced environmental compliance). Inventory availability is significantly higher for LCDA05.TBT (18,251 units vs. 1,113 units).

LCDA05 (SMC Diode Solutions) is a partial substitute suitable only for applications where peak pulse current requirements do not exceed 1A and where clamping voltage tolerance permits 9.8V operation instead of 11V. This part is not recommended as a direct replacement for designs requiring the full 5A peak pulse current specification of LCDA05.T. The LCDA05 offers 4 bidirectional channels compared to 2 channels in LCDA05.T, which may provide additional protection paths in multi-line applications but does not constitute a functional upgrade for single-line protection circuits. REACH compliance status differs (REACH Affected for LCDA05 vs. not specified for LCDA05.T).

Frequently Asked Questions (FAQ)

Q: Can LCDA05.TBT be used as a direct replacement for LCDA05.T in production?

A: Yes. LCDA05.TBT is electrically and mechanically identical to LCDA05.T. Both parts share the same reverse standoff voltage (5V), breakdown voltage (6V), clamping voltage (11V), peak pulse current (5A), and 8-SOIC package dimensions. The parts differ only in packaging format and RoHS certification variant. No circuit redesign or validation is required.

Q: What are the limitations of using LCDA05 as a substitute for LCDA05.T?

A: LCDA05 has two significant limitations: (1) Peak pulse current is rated at 1A versus 5A for LCDA05.T, making it unsuitable for high-energy transient protection applications; (2) Clamping voltage is 9.8V versus 11V, which may exceed acceptable voltage limits in sensitive circuits. LCDA05 is suitable only for low-current protection applications where these reduced specifications are acceptable.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pin assignments for surface-mount assembly. PCB layout and footprint remain unchanged across all three parts.

Q: What is the difference in RoHS compliance between LCDA05.T and LCDA05.TBT?

A: LCDA05.T carries RoHS Compliant status, while LCDA05.TBT carries ROHS3 Compliant status. ROHS3 represents an updated compliance certification with enhanced environmental standards. Both parts meet RoHS requirements; ROHS3 indicates more recent certification.

Q: Which substitute should be selected for new designs?

A: For new designs requiring 5A peak pulse current and 11V clamping voltage, LCDA05.TBT is the recommended choice. It provides identical electrical performance to LCDA05.T with higher inventory availability (18,251 units) and updated ROHS3 compliance certification. LCDA05 should be selected only when application requirements permit reduced current (1A) and clamping voltage (9.8V) specifications.

Q: Are there any thermal or operating temperature differences between the substitutes?

A: No. All three parts operate across the identical temperature range of -55°C to 125°C (TJ). Thermal performance and derating curves are equivalent across LCDA05.T, LCDA05.TBT, and LCDA05.