SS14L MQG Equivalent & Substitute Parts

Part Overview

The SS14L MQG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 40 V DC reverse voltage and 1 A average rectified current in a Sub SMA surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility. Alternative sources and packaging configurations are available for procurement flexibility and supply chain continuity.

Substiute Parts

SS14L MQG

Taiwan Semiconductor CorporationIn Stock: 1026SS14L MQG Datasheet

Current PartRFQ

SS14L

Taiwan Semiconductor CorporationIn Stock: 23363SS14L Datasheet

Parametric EquivalentRFQ

SS1FL4HM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 33227SS1FL4HM3/H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SS14L MQG are identified through parametric equivalence based on the following critical electrical and mechanical criteria:

Matching Parameters (Required for Substitution):

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 1 A
• Package / Case: DO-219AB
• Mounting Type: Surface Mount
• Technology: Schottky
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variations:

• Voltage - Forward (Vf) (Max) @ If: 500–550 mV @ 1 A
• Current - Reverse Leakage @ Vr: 200–400 µA @ 40 V
• Operating Temperature - Junction: -55°C minimum to 125°C or higher maximum
• Packaging configuration: Cut Tape, Digi-Reel, or Tape & Reel

Parts meeting these criteria are classified as parametric equivalents or similar manufacturers' parts suitable for direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

SS14L (Parametric Equivalent): This part is a direct parametric equivalent from Taiwan Semiconductor Corporation with identical electrical specifications. However, the product status is classified as "Not For New Designs," indicating this variant is in mature or declining production phase. Selection of this part is appropriate for replacement or maintenance applications where existing inventory or supply chain relationships are established. RoHS3 compliance and unlimited moisture sensitivity rating are maintained.

SS1FL4HM3/H (Similar Manufacturer - Vishay): This Vishay General Semiconductor part meets all critical electrical and mechanical substitution criteria with the following distinctions: forward voltage is 50 mV lower (500 mV vs. 550 mV @ 1 A), reverse leakage current is 50% lower (200 µA vs. 400 µA @ 40 V), and operating temperature range extends to 150°C maximum. This part carries AEC-Q101 automotive qualification and is classified as Active product status, making it suitable for new design implementations. The eSMP® series designation and automotive-grade qualification provide additional reliability assurance for demanding applications.

Selection between these substitutes depends on design phase (new vs. existing), supply chain preferences, and application requirements for temperature range and leakage current performance.

Frequently Asked Questions (FAQ)

Q: Can SS14L be directly replaced with SS1FL4HM3/H in existing designs?

A: Yes. Both parts share identical voltage ratings (40 V), current ratings (1 A), package type (DO-219AB), and mounting configuration (Surface Mount). The SS1FL4HM3/H exhibits superior electrical characteristics with lower forward voltage and reverse leakage current, making it a direct functional substitute. No circuit modifications are required.

Q: What is the difference between SS14L MQG and SS14L?

A: Both parts are manufactured by Taiwan Semiconductor Corporation with identical electrical specifications. The primary difference is packaging configuration: SS14L MQG is supplied in standard packaging, while SS14L is available in Cut Tape (CT) and Digi-Reel® formats. Product status differs, with SS14L marked "Not For New Designs." Electrical performance is equivalent.

Q: Why does SS1FL4HM3/H have lower reverse leakage current?

A: Reverse leakage current (200 µA vs. 400 µA @ 40 V) reflects manufacturing process differences between Vishay and Taiwan Semiconductor Corporation. Lower leakage current is a beneficial characteristic that reduces power dissipation in standby conditions. This difference does not prevent substitution and may improve overall circuit efficiency.

Q: Is the DO-219AB package compatible with Sub SMA footprints?

A: Yes. DO-219AB is the formal package designation for the Sub SMA form factor. All three parts use this identical package specification, ensuring mechanical and electrical compatibility on printed circuit boards designed for Sub SMA diodes.

Q: Can these parts be used in automotive applications?

A: SS1FL4HM3/H carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. SS14L and SS14L MQG do not carry explicit automotive qualification but meet RoHS3 compliance and general industrial reliability standards. Application suitability depends on specific automotive qualification requirements of the end product.

Q: What is the significance of the -55°C to 150°C operating range on SS1FL4HM3/H?

A: The extended upper temperature limit (150°C vs. 125°C) provides additional thermal margin in high-temperature operating environments. This specification does not affect substitution compatibility but indicates enhanced thermal performance capability. Applications operating near 125°C may benefit from this extended range.

Q: Are all three parts RoHS3 compliant?

A: Yes. SS14L MQG, SS14L, and SS1FL4HM3/H are all RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1), confirming lead-free construction and compliance with environmental regulations.