1N5817M-13 Equivalent & Substitute Parts

Part Overview

The 1N5817M-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 20 V DC reverse voltage and 1 A average rectified current in a surface mount MELF (DO-213AB) package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical performance within the specified voltage and current ratings while accommodating different package configurations where applicable.

Substiute Parts

1N5817M-13

Diodes IncorporatedIn Stock: 194481N5817M-13 Datasheet

Current PartRFQ

B120-13-F

Diodes IncorporatedIn Stock: 109117B120-13-F Datasheet

MFR RecommendedRFQ

CDLL1A20

Microchip TechnologyIn Stock: 888CDLL1A20 Datasheet

MFR RecommendedRFQ

CDLL5817

Microchip TechnologyIn Stock: 1202CDLL5817 Datasheet

MFR RecommendedRFQ

MBRA120ET3G

onsemiIn Stock: 16646MBRA120ET3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N5817M-13 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

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

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Package options: DO-213AB (MELF) or DO-214AC (SMA)

Compliance Criteria:

• RoHS Status: ROHS3 Compliant preferred for new designs
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories based on package type: MELF package equivalents (same footprint as original) and SMA package alternatives (different footprint, requires PCB layout modification).

Parameter Comparison

Engineering Selection Recommendations

For Direct Footprint Replacement (DO-213AB MELF Package):

CDLL5817 (Microchip Technology) and CDLL1A20 (Microchip Technology) maintain the original MELF package configuration, eliminating PCB layout modifications. Both parts are active products with unlimited moisture sensitivity rating. However, both are RoHS non-compliant, which may restrict use in applications requiring RoHS3 compliance. Operating temperature range for CDLL5817 is -55°C ~ 125°C, matching the original specification. Forward voltage is elevated at 600 mV @ 1 A compared to the original 450 mV @ 1 A.

For Active Product with RoHS3 Compliance (Package Change Required):

B120-13-F (Diodes Incorporated) and MBRA120ET3G (onsemi) are both active, ROHS3 compliant products in the DO-214AC SMA package. Both require PCB layout modification due to different footprint. B120-13-F offers forward voltage of 500 mV @ 1 A with operating temperature range -65°C ~ 150°C. MBRA120ET3G provides superior reverse leakage performance at 10 µA @ 20 V with operating temperature range -55°C ~ 150°C and forward voltage of 530 mV @ 1 A.

Compliance Considerations:

For new designs requiring RoHS3 compliance, B120-13-F or MBRA120ET3G are appropriate selections. For legacy designs where RoHS compliance is not required and footprint preservation is critical, CDLL5817 or CDLL1A20 provide direct replacement capability.

Frequently Asked Questions (FAQ)

Q: Can B120-13-F or MBRA120ET3G be used as direct replacements without PCB modification?

A: No. Both B120-13-F and MBRA120ET3G use the DO-214AC SMA package, which has a different footprint than the original DO-213AB MELF package. PCB layout modification is required for these substitutes.

Q: What is the difference between CDLL5817 and CDLL1A20?

A: Both are Microchip Technology Schottky diodes in DO-213AB MELF package with identical electrical ratings (20 V, 1 A, 600 mV forward voltage). CDLL5817 specifies operating temperature range of -55°C ~ 125°C. CDLL1A20 does not specify operating temperature range in the provided data. Both are RoHS non-compliant.

Q: Why does the 1N5817M-13 show higher forward voltage (450 mV) compared to substitute parts?

A: The original specification of 450 mV @ 1 A represents the maximum forward voltage for the 1N5817M-13. Substitute parts with higher forward voltage ratings (500 mV, 530 mV, or 600 mV) remain within acceptable operating parameters for most applications, though power dissipation will increase proportionally.

Q: Which substitute part has the lowest reverse leakage current?

A: MBRA120ET3G exhibits the lowest reverse leakage current at 10 µA @ 20 V, compared to 1 mA @ 20 V for the original 1N5817M-13. Lower reverse leakage reduces standby power consumption in applications sensitive to leakage current.

Q: Are all substitute parts RoHS3 compliant?

A: No. B120-13-F and MBRA120ET3G are ROHS3 compliant. CDLL5817 and CDLL1A20 are RoHS non-compliant. Compliance requirements should be verified against application and regulatory standards before part selection.

Q: What is the moisture sensitivity level for all listed parts?

A: All parts, including the original 1N5817M-13 and all substitutes, have Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.