BAT54WT1 Equivalent & Substitute Parts

Part Overview

The BAT54WT1 is a Schottky detector/switching diode manufactured by onsemi, rated for 30 V DC reverse voltage with 200 mA average rectified current in a surface mount SC-70-3 (SOT323) package. This component is classified as obsolete product status. Locating equivalent and substitute parts is necessary to support ongoing production requirements, design updates, and supply chain continuity. Substitute parts must maintain electrical performance across voltage, current, and switching characteristics while accommodating package and compliance variations.

Substiute Parts

BAT54WT1

onsemiIn Stock: 762BAT54WT1 Datasheet

Current PartRFQ

BAT54WT1G

onsemiIn Stock: 20169BAT54WT1G Datasheet

DirectRFQ

BAT54E6327HTSA1

Infineon TechnologiesIn Stock: 30371BAT54E6327HTSA1 Datasheet

SimilarRFQ

BAT54WT-TP

Micro Commercial CoIn Stock: 4357BAT54WT-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT54WT1 is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io): 200 mA
• Voltage - Forward (Vf) (Max) @ If: 800 mV @ 100 mA (or within acceptable tolerance)
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 2 µA @ 25 V
• Capacitance @ Vr, F: 10 pF @ 1 V, 1 MHz (or within acceptable tolerance)
• Technology: Schottky
• Speed Classification: Small Signal ≤ 200 mA (Io), Any Speed

Mechanical Equivalence Criteria:

• Mounting Type: Surface Mount
• Package / Case: SC-70 / SOT-323 or compatible surface mount packages
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories: Direct Equivalents (identical package and electrical specifications) and Similar Equivalents (matching electrical specifications with package variations). All substitute parts share the same base product number (BAT54) and maintain Schottky diode technology classification.

Parameter Comparison

Engineering Selection Recommendations

BAT54WT1G (onsemi) is the primary direct equivalent substitute. This part maintains identical electrical specifications and package configuration (SC-70-3 SOT323) while offering active product status and ROHS3 compliance. The BAT54WT1G is available in Cut Tape and Digi-Reel packaging formats, providing supply chain flexibility. This substitute is recommended for applications requiring exact package compatibility and onsemi manufacturer continuity.

BAT54E6327HTSA1 (Infineon Technologies) is a similar equivalent with matching electrical performance across all critical parameters. This part uses the SOT-23-3 package (TO-236-3, SC-59 designation), which differs from the original SC-70-3 footprint. The BAT54E6327HTSA1 offers active product status, ROHS3 compliance, and a higher maximum junction temperature rating (150°C). This substitute is suitable for applications where package footprint variation is acceptable and Infineon sourcing is preferred.

BAT54WT-TP (Micro Commercial Co) is a similar equivalent maintaining the SC-70 SOT-323 package footprint with active product status and ROHS3 compliance. Forward voltage specification differs slightly (1 V @ 100 mA versus 800 mV @ 100 mA), and capacitance measurement conditions vary (0 V versus 1 V). This substitute is applicable for applications tolerating minor forward voltage variation and supporting Micro Commercial Co sourcing.

All substitute parts share RoHS3 compliance and REACH unaffected status, providing regulatory alignment for modern production environments. The obsolete status of the original BAT54WT1 necessitates transition to one of these active alternatives.

Frequently Asked Questions (FAQ)

Q: Can BAT54WT1G be used as a direct replacement for BAT54WT1?

A: Yes. The BAT54WT1G maintains identical electrical specifications (30 V reverse voltage, 200 mA current, 800 mV forward voltage @ 100 mA, 5 ns reverse recovery time) and package configuration (SC-70-3 SOT323). Both parts are manufactured by onsemi and share the same base product number (BAT54). The primary difference is product status: BAT54WT1G is active while BAT54WT1 is obsolete.

Q: What is the difference between BAT54WT1G and BAT54E6327HTSA1?

A: Both parts meet the same electrical specifications for voltage, current, and switching characteristics. The primary differences are manufacturer (onsemi versus Infineon Technologies), package designation (SC-70-3 SOT323 versus PG-SOT23 / SOT-23-3), and maximum junction temperature (not specified for BAT54WT1G versus 150°C for BAT54E6327HTSA1). Package footprint variation requires PCB layout verification before substitution.

Q: Is BAT54WT-TP compatible with the original BAT54WT1 design?

A: BAT54WT-TP maintains the SC-70 SOT-323 package footprint and shares all critical electrical parameters. However, forward voltage specification is 1 V @ 100 mA compared to 800 mV @ 100 mA for BAT54WT1. Capacitance measurement conditions also differ (0 V versus 1 V). These variations are within typical Schottky diode tolerance ranges but should be verified against circuit performance requirements.

Q: Why do substitute parts have different packaging formats?

A: Packaging format (Cut Tape, Digi-Reel, Tape & Reel) reflects distribution and manufacturing convenience rather than electrical or mechanical performance. All formats are compatible with standard surface mount assembly processes. Selection depends on production volume and procurement workflow.

Q: Are all substitute parts RoHS compliant?

A: Yes. BAT54WT1G, BAT54E6327HTSA1, and BAT54WT-TP are all ROHS3 compliant. The original BAT54WT1 is RoHS non-compliant. Transition to any substitute part provides regulatory alignment for modern manufacturing and environmental standards.

Q: Can I use BAT54E6327HTSA1 if my PCB is designed for SC-70-3 package?

A: No. BAT54E6327HTSA1 uses SOT-23-3 package (TO-236-3, SC-59 designation), which has different pin spacing and footprint compared to SC-70-3. PCB layout modification is required. For direct footprint compatibility, use BAT54WT1G or BAT54WT-TP.

Q: What is the base product number and why is it relevant?

A: The base product number is BAT54. All substitute parts share this designation, indicating they belong to the same product family with equivalent core functionality. This commonality ensures electrical and functional compatibility across the substitution group.

Q: Are there temperature rating differences between substitutes?

A: Yes. BAT54WT1G and BAT54WT-TP specify operating junction temperature range of -55°C to 125°C. BAT54E6327HTSA1 specifies maximum junction temperature of 150°C. For applications requiring extended high-temperature operation, BAT54E6327HTSA1 offers superior thermal performance.