SS13LH Equivalent & Substitute Parts

Part Overview

The SS13LH is a 1A, 30V Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation in SOD-123 surface mount packaging. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The part is automotive-grade with AEC-Q101 qualification and ROHS3 compliance. Due to its discontinued status, identifying equivalent substitute parts with compatible electrical and mechanical characteristics is necessary for ongoing production support and design continuity.

Substiute Parts

SS13LH

Taiwan Semiconductor CorporationIn Stock: 939SS13LH Datasheet

Current PartRFQ

SS14LWH

Taiwan Semiconductor CorporationIn Stock: 39889SS14LWH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS13LH is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Voltage rating must equal or exceed 30V DC reverse voltage
• Current rating must equal or exceed 1A average rectified current
• Forward voltage drop must be within acceptable circuit tolerance
• Reverse leakage current characteristics must be compatible with circuit design
• Fast recovery speed characteristic (≤ 500ns, > 200mA) must be maintained

Mechanical & Packaging Requirements:

• Surface mount technology (SMD) mounting type
• Package footprint compatibility with SOD-123 or equivalent form factor
• Operating temperature range must support -55°C to 125°C minimum

Compliance & Status Requirements:

• ROHS3 compliance required
• Automotive-grade classification preferred for direct replacement
• Active product status preferred for long-term availability

The SS14LWH meets these substitution criteria with enhanced electrical ratings and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SS14LWH is the manufacturer-recommended substitute for the SS13LH based on the following engineering criteria:

Electrical Suitability: The SS14LWH maintains identical current rating (1A) and fast recovery speed characteristics. The 40V reverse voltage rating exceeds the 30V requirement, providing design margin. The forward voltage increase of 50 mV (from 500 mV to 550 mV) must be evaluated within specific circuit requirements; this difference is typical between Schottky diode variants and generally acceptable in rectifier applications.

Compliance & Availability: Both parts maintain ROHS3 compliance and REACH unaffected status. The SS14LWH holds active product status with 39,824 units in stock, ensuring long-term availability compared to the discontinued SS13LH. The SS14LWH includes Moisture Sensitivity Level (MSL) 1 rating, indicating unlimited shelf life.

Thermal Performance: The SS14LWH supports an extended operating temperature range (-55°C to 150°C) compared to the SS13LH (-55°C to 125°C), providing additional thermal margin for automotive applications.

Package Consideration: The SS14LWH uses SOD-123W packaging versus the SS13LH SOD-123 package. PCB layout verification is required to confirm footprint compatibility, as SOD-123W represents a variant of the SOD-123 form factor.

Frequently Asked Questions (FAQ)

Q: Can the SS14LWH directly replace the SS13LH without circuit modification?

A: The SS14LWH is electrically compatible as a drop-in substitute for the SS13LH in most applications. The higher voltage rating (40V vs. 30V) and lower reverse leakage current represent improvements. However, the 50 mV increase in forward voltage drop must be evaluated within circuit tolerance specifications. PCB footprint compatibility between SOD-123 and SOD-123W packages must be confirmed before implementation.

Q: What is the significance of the "Not For New Designs" status on the SS13LH?

A: This designation indicates the SS13LH has reached end-of-life and is no longer recommended for new product development. Existing inventory remains available for production support. The SS14LWH, with active product status, is the appropriate choice for new designs and ongoing production continuity.

Q: Are there electrical performance differences between the SS13LH and SS14LWH that affect circuit operation?

A: The primary electrical difference is the forward voltage drop: 500 mV (SS13LH) versus 550 mV (SS14LWH) at 1A. This 50 mV difference is within typical Schottky diode manufacturing variation and acceptable in most rectifier circuits. The SS14LWH exhibits superior reverse leakage characteristics (100 µA vs. 400 µA), which improves circuit performance. Both parts maintain identical fast recovery speed and current ratings.

Q: What packaging considerations apply when substituting the SS14LWH for the SS13LH?

A: The SS13LH uses SOD-123 packaging while the SS14LWH uses SOD-123W packaging. Both are surface mount packages with similar form factors, but SOD-123W represents a variant with different dimensional specifications. PCB layout and reflow profile compatibility must be verified. Consult package datasheets for precise footprint dimensions and land pattern requirements.

Q: Are both parts suitable for automotive applications?

A: The SS13LH carries automotive-grade classification with AEC-Q101 qualification. The SS14LWH does not explicitly list automotive-grade designation in the provided specifications. For applications requiring automotive-grade components, verify the SS14LWH's automotive qualification status with the manufacturer before implementation.

Q: What is the shelf life difference between these parts?

A: The SS13LH specifications do not include Moisture Sensitivity Level (MSL) data. The SS14LWH is rated MSL 1 (Unlimited), indicating indefinite shelf life under standard storage conditions. This represents an advantage for inventory management and long-term availability.