SS14LHRFG Equivalent & Substitute Parts

Part Overview

The SS14LHRFG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 40V DC reverse voltage and 1A average rectified current in a Sub SMA surface mount package. This component is classified as Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance.

Substitute parts become necessary when the primary part number reaches end-of-life status, inventory constraints occur, or design requirements necessitate alternative sourcing from qualified manufacturers. The SS14LHRFG maintains parametric equivalence with select alternative part numbers that satisfy identical electrical and mechanical specifications within the Schottky diode rectifier category.

Substiute Parts

SS14LHRFG

Taiwan Semiconductor CorporationIn Stock: 805SS14LHRFG 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

Substitution eligibility for the SS14LHRFG is determined by strict parametric matching across the following critical criteria:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 40V
• Current - Average Rectified (Io): 1A
• Technology: Schottky
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters (Must Match):

• Package / Case: DO-219AB
• Mounting Type: Surface Mount
• Supplier Device Package: Sub SMA or DO-219AB (SMF)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Substitute parts are classified into two categories: Parametric Equivalents (identical electrical and mechanical specifications from the same manufacturer) and Similar Manufacturers (equivalent specifications from alternative qualified manufacturers with automotive-grade certification).

Parameter Comparison

Engineering Selection Recommendations

SS14L (Parametric Equivalent - Taiwan Semiconductor Corporation):

The SS14L provides direct parametric equivalence to the SS14LHRFG with identical electrical specifications and package configuration. Both components are manufactured by Taiwan Semiconductor Corporation and maintain ROHS3 compliance with MSL 1 rating. However, the SS14L carries a "Not For New Designs" product status designation, indicating this part number is in mature lifecycle phase. Selection of SS14L is appropriate for legacy system maintenance, repair operations, or inventory replenishment where design continuity with existing production stock is required. Automotive-grade certification status for SS14L is not specified in available documentation.

SS1FL4HM3/H (Similar Manufacturer - Vishay General Semiconductor - Diodes Division):

The SS1FL4HM3/H represents an alternative from a qualified manufacturer with active product status and full AEC-Q101 automotive qualification. This Vishay component maintains electrical compatibility across all critical parameters: 40V reverse voltage, 1A rectified current, and fast recovery Schottky technology. Notable performance advantages include lower forward voltage drop (500 mV versus 550 mV at 1A) and reduced reverse leakage current (200 µA versus 400 µA at 40V). The extended operating temperature range (-55°C to 150°C versus -55°C to 125°C) provides additional thermal margin. The SS1FL4HM3/H is supplied in Tape & Reel packaging with DO-219AB (SMF) designation, suitable for high-volume automated assembly. This part is recommended for new design implementations and applications requiring active product lifecycle support.

Frequently Asked Questions (FAQ)

Q: Can SS14L be used as a direct replacement for SS14LHRFG?

A: Yes, the SS14L provides direct parametric substitution with identical voltage rating (40V), current rating (1A), forward voltage drop (550 mV @ 1A), and package configuration (DO-219AB Sub SMA). Both components are manufactured by Taiwan Semiconductor Corporation and maintain ROHS3 compliance. However, SS14L carries "Not For New Designs" status, making it suitable for maintenance and repair applications rather than new product development.

Q: What are the key differences between SS14LHRFG and SS1FL4HM3/H?

A: Both components meet the core electrical requirements of 40V reverse voltage and 1A rectified current in DO-219AB surface mount packages. The SS1FL4HM3/H (Vishay) offers superior performance characteristics: forward voltage drop of 500 mV (versus 550 mV), lower reverse leakage of 200 µA (versus 400 µA), and extended junction temperature range to 150°C. The SS1FL4HM3/H maintains active product status with AEC-Q101 automotive qualification, making it suitable for new designs.

Q: Are all three parts suitable for automotive applications?

A: The SS14LHRFG and SS1FL4HM3/H both carry explicit AEC-Q101 automotive qualification and Automotive grade designation. The SS14L does not specify automotive qualification status in available documentation. For automotive applications requiring formal qualification documentation, the SS14LHRFG (primary) or SS1FL4HM3/H (substitute) are the appropriate selections.

Q: What is the significance of "Not For New Designs" status on SS14L?

A: "Not For New Designs" indicates the SS14L has entered mature lifecycle phase and the manufacturer is not actively promoting this part number for new product development. This designation does not affect electrical performance or compliance status. SS14L remains suitable for sustaining production of existing designs, field repairs, and inventory replenishment where design continuity is required.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, all three parts share identical DO-219AB package configuration and Sub SMA/SMF supplier device package designation, enabling direct PCB footprint compatibility. Surface mount assembly equipment can process all three part numbers without tooling changes. However, packaging format differs: SS14LHRFG is supplied in standard packaging, SS14L in Cut Tape & Digi-Reel format, and SS1FL4HM3/H in Tape & Reel format. Verify packaging compatibility with your assembly process requirements.

Q: What is the impact of lower reverse leakage current in SS1FL4HM3/H?

A: The SS1FL4HM3/H exhibits 200 µA reverse leakage at 40V compared to 400 µA for SS14LHRFG. Lower reverse leakage reduces parasitic current draw in high-impedance circuit applications and improves efficiency in power conversion circuits. This characteristic represents a performance advantage with no negative impact on circuit compatibility.

Q: Are there temperature rating considerations for part selection?

A: The SS1FL4HM3/H supports junction temperatures to 150°C, while SS14LHRFG and SS14L are rated to 125°C. For applications operating near maximum junction temperature limits, the SS1FL4HM3/H provides additional thermal margin. For standard operating ranges within -55°C to 125°C, all three parts are equivalent.