BAT54CTT1 Equivalent & Substitute Parts

Part Overview

The BAT54CTT1 is a Schottky diode array featuring one pair of common cathode configuration rated for 30 V DC reverse voltage and 200 mA average rectified current per diode. Manufactured by onsemi, this component is housed in an SC-75 (SOT-416) surface mount package and is classified as obsolete. The obsolete status necessitates identification of equivalent and substitute components to maintain design continuity and ensure procurement availability for new production and repair applications.

Substiute Parts

BAT54CTT1

onsemiIn Stock: 1017BAT54CTT1 Datasheet

Current PartRFQ

BAT54CTT1G

onsemiIn Stock: 59407BAT54CTT1G Datasheet

DirectRFQ

SBAT54CTT1G

onsemiIn Stock: 4323SBAT54CTT1G Datasheet

Parametric EquivalentRFQ

BAT5405WH6327XTSA1

Infineon TechnologiesIn Stock: 112886BAT5405WH6327XTSA1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT54CTT1 is determined by strict equivalence across the following critical parameters: diode configuration (1 Pair Common Cathode), technology (Schottky), maximum reverse voltage (30 V), average rectified current per diode (200 mA DC), forward voltage (800 mV @ 100 mA), reverse recovery time (5 ns), reverse leakage current (2 µA @ 25 V), and operating temperature range (-55°C to 125°C). Surface mount mounting type and MSL rating (1 - Unlimited) are also required for substitution compatibility.

Substitute parts are grouped into two categories:

Direct Equivalents: Parts that maintain identical electrical specifications and package form factor (SC-75, SOT-416), differing only in product status and packaging format (Cut Tape & Digi-Reel versus standard packaging).

Parametric Equivalents with Package Variation: Parts that maintain all electrical specifications but utilize an alternative surface mount package (SC-70, SOT-323) with enhanced thermal performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

BAT54CTT1G (onsemi): This part is the primary direct equivalent to the BAT54CTT1. It maintains identical electrical specifications and SC-75 (SOT-416) package form factor. The BAT54CTT1G carries Active product status and ROHS3 compliance, addressing the regulatory limitations of the obsolete BAT54CTT1. Packaging is available in Cut Tape (CT) & Digi-Reel format with significantly higher inventory availability (59,300 units). This part is suitable for direct replacement in existing designs without PCB layout modifications.

SBAT54CTT1G (onsemi): This part provides parametric equivalence with identical electrical specifications and SC-75 (SOT-416) package form factor. The SBAT54CTT1G carries Active product status and ROHS3 compliance. Packaging is available in Tape & Reel (TR) format with moderate inventory availability (4,300 units). This part is suitable for direct replacement in existing designs without PCB layout modifications.

BAT5405WH6327XTSA1 (Infineon Technologies): This part provides parametric equivalence with identical electrical specifications but utilizes an SC-70 (SOT-323) package, which is physically smaller than the SC-75 (SOT-416) package. The BAT5405WH6327XTSA1 carries Active product status and ROHS3 compliance. Operating temperature maximum is extended to 150°C compared to 125°C for the BAT54CTT1. Packaging is available in Tape & Reel (TR) format with the highest inventory availability (112,817 units). This part requires PCB layout modification due to package size difference but offers enhanced thermal performance and superior component availability.

Frequently Asked Questions (FAQ)

Q: Can BAT54CTT1G be used as a direct replacement for BAT54CTT1?

A: Yes. The BAT54CTT1G maintains identical electrical specifications (30 V reverse voltage, 200 mA average rectified current, 800 mV forward voltage at 100 mA, 5 ns reverse recovery time, 2 µA reverse leakage current) and uses the same SC-75 (SOT-416) package. No circuit modifications or PCB layout changes are required. The primary differences are product status (Active versus Obsolete) and RoHS compliance (ROHS3 Compliant versus non-compliant).

Q: What is the difference between BAT54CTT1G and SBAT54CTT1G?

A: Both parts are parametric equivalents with identical electrical specifications and SC-75 (SOT-416) package form factor. The primary difference is packaging format: BAT54CTT1G is supplied in Cut Tape (CT) & Digi-Reel format, while SBAT54CTT1G is supplied in Tape & Reel (TR) format. Both carry Active product status and ROHS3 compliance. Selection between these parts depends on procurement and assembly requirements.

Q: Can BAT5405WH6327XTSA1 replace BAT54CTT1 without PCB modifications?

A: No. The BAT5405WH6327XTSA1 uses an SC-70 (SOT-323) package, which is physically smaller than the SC-75 (SOT-416) package used by BAT54CTT1. PCB layout modifications are required to accommodate the different package footprint. However, all electrical specifications are maintained, and the part offers extended operating temperature range (150°C maximum junction temperature versus 125°C) and superior component availability.

Q: Are all substitute parts RoHS compliant?

A: The BAT54CTT1 is RoHS non-compliant. All three substitute parts (BAT54CTT1G, SBAT54CTT1G, and BAT5405WH6327XTSA1) are ROHS3 Compliant. This compliance upgrade is beneficial for applications subject to RoHS regulations and environmental standards.

Q: What is the moisture sensitivity level for these diode arrays?

A: All parts, including the main part BAT54CTT1 and all substitutes, carry MSL rating of 1 (Unlimited). This indicates no moisture sensitivity restrictions and no special storage or handling requirements.

Q: Which substitute part offers the best inventory availability?

A: The BAT5405WH6327XTSA1 (Infineon Technologies) offers the highest inventory availability with 112,817 units in stock, followed by BAT54CTT1G with 59,300 units and SBAT54CTT1G with 4,300 units. Selection should balance availability with package compatibility requirements.