SS14LHR3G Equivalent & Substitute Parts

Part Overview

The SS14LHR3G 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.

Equivalent and substitute parts are identified when alternative components satisfy the same electrical performance requirements and mechanical compatibility within the DO-219AB package family. The SS14LHR3G serves as the primary reference for this substitution analysis.

Substiute Parts

SS14LHR3G

Taiwan Semiconductor CorporationIn Stock: 930SS14LHR3G 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 SS14LHR3G is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 40V
• Current - Average Rectified (Io): 1A
• Package / Case: DO-219AB (Sub SMA or equivalent)
• Technology: Schottky
• Mounting Type: Surface Mount

Acceptable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Up to 550 mV @ 1A
• Current - Reverse Leakage @ Vr: Up to 400 µA @ 40V
• Operating Temperature - Junction: Minimum -55°C to 125°C
• Capacitance @ Vr, F: Not specified as limiting criterion

Substitute parts are classified into two categories:

Parametric Equivalent: Parts with identical electrical ratings and package specifications, differing only in product status or packaging format.

Similar Manufacturer Part: Parts meeting all mandatory electrical and mechanical criteria with minor performance variations within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

SS14L (Parametric Equivalent): The SS14L is a parametric equivalent manufactured by Taiwan Semiconductor Corporation with identical electrical specifications and package configuration. However, this part carries a "Not For New Designs" product status designation. Selection of SS14L is appropriate for legacy system maintenance, repair, or replacement applications where the original SS14LHR3G is unavailable. The parametric equivalence ensures direct functional compatibility without circuit redesign.

SS1FL4HM3/H (Similar Manufacturer Part): The SS1FL4HM3/H manufactured by Vishay General Semiconductor meets all mandatory electrical and mechanical substitution criteria. This part demonstrates superior performance characteristics including lower forward voltage drop (500 mV vs. 550 mV @ 1A) and reduced reverse leakage current (200 µA vs. 400 µA @ 40V). The extended operating temperature range (-55 to 150°C vs. -55 to 125°C) provides additional thermal margin. Both the main part and this substitute carry Active product status and AEC-Q101 automotive qualification. The SS1FL4HM3/H is suitable for new designs and represents the preferred alternative when SS14LHR3G availability is constrained.

Compliance Considerations: All identified substitutes maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory alignment with the original component specification.

Frequently Asked Questions (FAQ)

Q: Can SS14L be used as a direct replacement for SS14LHR3G?

A: Yes. The SS14L is a parametric equivalent with identical voltage rating (40V), current rating (1A), forward voltage drop (550 mV @ 1A), reverse leakage current (400 µA @ 40V), and package configuration (DO-219AB Sub SMA). Both components use Schottky technology with fast recovery characteristics. The primary distinction is product status; SS14L is designated "Not For New Designs," making it suitable for maintenance and repair applications only.

Q: What are the key differences between SS14LHR3G and SS1FL4HM3/H?

A: Both components share identical voltage (40V) and current (1A) ratings with DO-219AB packaging. The SS1FL4HM3/H demonstrates improved electrical performance with lower forward voltage drop (500 mV vs. 550 mV @ 1A) and lower reverse leakage current (200 µA vs. 400 µA @ 40V). The SS1FL4HM3/H also provides an extended operating temperature range to 150°C. Both parts carry Active status and AEC-Q101 qualification.

Q: Are all substitute parts automotive qualified?

A: The SS14LHR3G and SS1FL4HM3/H both carry AEC-Q101 automotive qualification. The SS14L does not specify AEC-Q101 qualification in the provided data. For automotive applications requiring AEC-Q101 compliance, selection should be limited to SS14LHR3G or SS1FL4HM3/H.

Q: What is the significance of the DO-219AB package designation?

A: DO-219AB is the standardized package case designation for Sub SMA surface mount diodes. All identified substitutes utilize this identical package, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes. No board redesign or requalification is required when substituting between parts with matching DO-219AB packaging.

Q: Can SS1FL4HM3/H be used in new product designs?

A: Yes. The SS1FL4HM3/H carries Active product status, indicating full availability and manufacturer support for new designs. This part is the recommended substitute for new applications when SS14LHR3G is unavailable, as it provides equivalent or superior electrical performance with extended temperature range capability.

Q: What is the MSL rating and why does it matter?

A: All identified parts carry MSL Level 1 (Unlimited), indicating unlimited shelf life without moisture baking requirements. This classification simplifies inventory management and reduces component handling constraints during manufacturing and assembly processes.

Q: Are there any temperature operating range limitations when substituting?

A: The SS14LHR3G and SS14L both operate from -55°C to 125°C junction temperature. The SS1FL4HM3/H extends this range to -55°C to 150°C. For applications operating above 125°C, only the SS1FL4HM3/H provides adequate thermal margin. For standard operating ranges within -55°C to 125°C, all three parts are functionally equivalent.