SGL41-20/1 Equivalent & Substitute Parts

Part Overview

The SGL41-20/1 is a Schottky diode rated for 20 V DC reverse voltage and 1 A average rectified current in a surface mount DO-213AB (MELF) package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements.

Substiute Parts

SGL41-20/1

Vishay General Semiconductor - Diodes DivisionIn Stock: 949SGL41-20/1 Datasheet

Current PartRFQ

CDLL1A20

Microchip TechnologyIn Stock: 888CDLL1A20 Datasheet

MFR RecommendedRFQ

CDLL5817

Microchip TechnologyIn Stock: 1202CDLL5817 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SGL41-20/1 are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): 20 V (exact match required)
• Current - Average Rectified (Io): 1 A (exact match required)
• Technology: Schottky (exact match required)
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)

Mechanical Compatibility Criteria:

• Package / Case: DO-213AB, MELF (exact match required)
• Mounting Type: Surface Mount (exact match required)

Both substitute parts (CDLL1A20 and CDLL5817) meet all electrical and mechanical compatibility requirements. The substitutes are manufactured by Microchip Technology and maintain active product status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

CDLL5817 (Microchip Technology) is the primary substitute for the SGL41-20/1. This part maintains active product status, ensuring reliable long-term availability. The CDLL5817 provides identical electrical ratings (20 V, 1 A) and mechanical compatibility (DO-213AB surface mount package). Operating temperature range matches the original specification (-55°C ~ 125°C). Compliance certifications (RoHS non-compliant, REACH Unaffected, MSL 1) are equivalent to the original part.

CDLL1A20 (Microchip Technology) serves as an alternative substitute with identical electrical and mechanical specifications. This part is also active and maintains the same compliance profile. The primary distinction is that operating temperature range is not specified in available documentation. For applications where the full -55°C ~ 125°C operating range is required, CDLL5817 is the preferred selection.

Both substitutes exhibit lower reverse leakage current (100 µA @ 20 V) compared to the original SGL41-20/1 (500 µA @ 20 V), representing improved performance characteristics. Forward voltage drop is slightly higher (600 mV @ 1 A versus 500 mV @ 1 A), which remains within acceptable design margins for most applications.

Frequently Asked Questions (FAQ)

Q: Can CDLL1A20 or CDLL5817 be used as direct replacements for SGL41-20/1 in existing designs?

A: Both parts are electrically and mechanically compatible. They share identical voltage ratings (20 V), current ratings (1 A), package type (DO-213AB), and mounting configuration (surface mount). Pin-to-pin compatibility and footprint alignment are maintained. Substitution is valid for PCB assembly without layout modifications.

Q: What is the difference between CDLL1A20 and CDLL5817?

A: Both parts meet the core electrical and mechanical requirements for SGL41-20/1 substitution. CDLL5817 provides documented operating temperature range (-55°C ~ 125°C), matching the original specification. CDLL1A20 does not specify operating temperature range in available data. For applications requiring full temperature range specification, CDLL5817 is the recommended choice.

Q: Are there performance differences between the original SGL41-20/1 and the substitute parts?

A: The substitute parts exhibit lower reverse leakage current (100 µA @ 20 V versus 500 µA @ 20 V), indicating improved leakage performance. Forward voltage drop is slightly higher (600 mV @ 1 A versus 500 mV @ 1 A). These differences are within normal design tolerances for Schottky diode applications and do not prevent functional substitution.

Q: Do the substitute parts maintain the same compliance certifications?

A: Yes. Both CDLL1A20 and CDLL5817 maintain equivalent compliance status: RoHS non-compliant, REACH Unaffected, and Moisture Sensitivity Level 1 (Unlimited). Regulatory and environmental compliance profiles are identical to the original SGL41-20/1.

Q: Is the DO-213AB package identical across all three parts?

A: Yes. SGL41-20/1, CDLL1A20, and CDLL5817 all use the DO-213AB (MELF) surface mount package. Physical dimensions, lead spacing, and PCB footprint are standardized across these parts, enabling direct substitution without board redesign.

Q: Why is the SGL41-20/1 classified as obsolete?

A: The SGL41-20/1 is no longer in active production by Vishay General Semiconductor - Diodes Division. Microchip Technology's CDLL1A20 and CDLL5817 represent current-generation alternatives that fulfill the same functional requirements with active manufacturing support.