CMLD6263S TR Equivalent & Substitute Parts

Part Overview

The CMLD6263S TR is a Schottky diode array featuring a 2-pair common cathode configuration rated for 70 V DC reverse voltage and 15 mA average rectified current per diode. This component is packaged in SOT-563 surface mount format and is currently classified as obsolete. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support and production continuity. Alternative parts maintain the core electrical specifications while offering improved availability and compliance certifications.

Substiute Parts

CMLD6263S TR

Central Semiconductor CorpIn Stock: 854CMLD6263S TR Datasheet

Current PartRFQ

CMLD6263C TR PBFREE

Central Semiconductor CorpIn Stock: 14794CMLD6263C TR PBFREE Datasheet

Parametric EquivalentRFQ

CMLD6263S TR TIN/LEAD

Central Semiconductor CorpIn Stock: 900CMLD6263S TR TIN/LEAD Datasheet

Parametric EquivalentRFQ

BAS70DW-05-7-F

Diodes IncorporatedIn Stock: 3174BAS70DW-05-7-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CMLD6263S TR is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Diode Configuration: 2 Pair Common Cathode (mandatory)
• Technology: Schottky (mandatory)
• Voltage - DC Reverse (Vr) (Max): 70 V (mandatory)
• Mounting Type: Surface Mount (mandatory)
• Reverse Recovery Time (trr): 5 ns (mandatory)

Secondary Compatibility Parameters:

• Current - Average Rectified (Io): Equal or greater capacity
• Voltage - Forward (Vf): Equivalent or lower forward voltage drop
• Operating Temperature Range: Must encompass or match the original specification
• Package / Case: SOT-563, SOT-666, or equivalent footprint compatibility

Substitute parts are grouped into two categories: parametric equivalents from the same manufacturer (Central Semiconductor Corp) and manufacturer-recommended alternatives from other suppliers (Diodes Incorporated). All substitutes maintain the 70 V reverse voltage rating and Schottky technology. Differences in current rating, forward voltage, and package format are noted for engineering evaluation.

Parameter Comparison

Engineering Selection Recommendations

CMLD6263C TR PBFREE (Primary Equivalent)

This part is the direct parametric equivalent to the CMLD6263S TR with identical electrical specifications across all critical parameters: 70 V reverse voltage, 15 mA current rating, 410 mV forward voltage, and 5 ns reverse recovery time. The CMLD6263C TR PBFREE is manufactured by Central Semiconductor Corp and maintains the same SOT-563 package footprint. This part holds Active product status with ROHS3 compliance certification, providing superior availability (14,741 units in stock) compared to the obsolete original. Selection of this part eliminates obsolescence risk while maintaining full electrical and mechanical compatibility.

CMLD6263S TR TIN/LEAD (Alternative Equivalent)

This variant provides identical electrical performance to the original CMLD6263S TR with the same 70 V, 15 mA, and SOT-563 specifications. It maintains Active product status but carries RoHS non-compliance designation. This part is suitable for applications where lead-based solder processing is acceptable and RoHS compliance is not required. Inventory availability is adequate at 831 units.

BAS70DW-05-7-F (Higher Current Rated Alternative)

This Diodes Incorporated part maintains the 70 V reverse voltage, Schottky technology, 5 ns reverse recovery time, and 2-pair common cathode configuration. The BAS70DW-05-7-F provides a higher current rating of 70 mA per diode, enabling use in applications requiring greater current capacity. The package format differs (SOT-363 versus SOT-563), requiring PCB layout modification. Forward voltage is specified at 1 V @ 15 mA, which is higher than the original specification. Operating temperature range is -55°C ~ 125°C, which does not extend to the original -65°C lower limit. This part is ROHS3 compliant with 3,100 units in stock. Selection is appropriate when higher current capacity is required and package footprint change is feasible.

Frequently Asked Questions (FAQ)

Q: Can CMLD6263C TR PBFREE be used as a direct replacement for CMLD6263S TR?

A: Yes. The CMLD6263C TR PBFREE is a direct parametric equivalent with identical electrical specifications: 70 V reverse voltage, 15 mA current rating, 410 mV forward voltage @ 1 mA, 5 ns reverse recovery time, and SOT-563 package. The primary difference is product status (Active versus Obsolete) and RoHS3 compliance certification. No circuit modifications are required.

Q: What is the difference between CMLD6263C TR PBFREE and CMLD6263S TR TIN/LEAD?

A: Both parts are parametric equivalents with identical electrical specifications. The distinction is in lead finish and RoHS compliance. CMLD6263C TR PBFREE uses lead-free solder finish and is ROHS3 compliant. CMLD6263S TR TIN/LEAD uses tin/lead finish and is RoHS non-compliant. Selection depends on manufacturing process requirements and regulatory compliance mandates.

Q: Can BAS70DW-05-7-F replace CMLD6263S TR in all applications?

A: BAS70DW-05-7-F is not a direct replacement due to package format differences and modified electrical specifications. While it maintains 70 V reverse voltage and Schottky technology, the current rating is 70 mA (versus 15 mA), forward voltage is 1 V @ 15 mA (versus 410 mV @ 1 mA), and the package is SOT-363 (versus SOT-563). Additionally, the operating temperature range is -55°C ~ 125°C, which does not extend to -65°C. This part is suitable only when higher current capacity is required and PCB layout modification is acceptable.

Q: What is the significance of the SOT-563 versus SOT-363 package difference?

A: SOT-563 and SOT-363 are distinct surface mount package formats with different pin configurations and footprints. SOT-563 is a 6-pin package, while SOT-363 is also a 6-pin package but with different physical dimensions and pin spacing. Direct PCB footprint compatibility does not exist between these packages. Design layout modification is required if switching from SOT-563 to SOT-363.

Q: Why is the operating temperature range different for BAS70DW-05-7-F?

A: The BAS70DW-05-7-F is specified with a junction temperature range of -55°C ~ 125°C, which does not encompass the original CMLD6263S TR specification of -65°C ~ 150°C. This difference reflects the distinct design and manufacturing process of the Diodes Incorporated part. Applications requiring operation below -55°C or above 125°C must use CMLD6263C TR PBFREE or CMLD6263S TR TIN/LEAD.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials including lead, mercury, cadmium, and hexavalent chromium. CMLD6263C TR PBFREE and BAS70DW-05-7-F are ROHS3 compliant. CMLD6263S TR TIN/LEAD is RoHS non-compliant. Selection depends on end-product regulatory requirements and manufacturing location.

Q: Is the higher current rating of BAS70DW-05-7-F (70 mA) backward compatible with 15 mA designs?

A: Yes, from a current capacity perspective. A 70 mA rated diode can operate at 15 mA without exceeding its ratings. However, the forward voltage specification differs: BAS70DW-05-7-F is specified at 1 V @ 15 mA, while CMLD6263S TR is specified at 410 mV @ 1 mA. This voltage difference may affect circuit performance in applications sensitive to forward voltage drop. Additionally, the package footprint change requires PCB modification.