BAT54C_G Equivalent & Substitute Parts

Part Overview

The BAT54C_G is a Schottky diode array manufactured by onsemi, configured as 1 pair common cathode with a maximum reverse voltage of 30 V and average rectified current of 200 mA per diode. This component is packaged in a surface mount TO-236-3 (SOT-23-3) configuration and is classified as obsolete. Due to its obsolete status, equivalent substitute parts with active product status are necessary for new designs and ongoing production requirements.

Substiute Parts

BAT54C_G

onsemiIn Stock: 838BAT54C_G Datasheet

Current PartRFQ

BAT54CLT1G

onsemiIn Stock: 206097BAT54CLT1G Datasheet

DirectRFQ

BAT54C-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 12127BAT54C-E3-08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BAT54C_G are qualified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io) (per Diode): 200 mA
• Voltage - Forward (Vf) (Max) @ If: 800 mV @ 100 mA
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 2 µA @ 25 V
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these electrical and mechanical requirements. Variations in operating temperature range and product status are noted but do not affect functional substitution within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

BAT54CLT1G (onsemi) is the primary substitute for BAT54C_G. This part maintains identical electrical specifications and is manufactured by the same original equipment manufacturer. BAT54CLT1G carries active product status with ROHS3 compliance and is available in high volume inventory. The operating temperature range is reduced to -55°C ~ 125°C compared to the original -55°C ~ 150°C specification; this difference applies only to applications requiring sustained operation above 125°C junction temperature.

BAT54C-E3-08 (Vishay General Semiconductor - Diodes Division) is a secondary substitute offering equivalent electrical performance and identical package configuration. This part is manufactured by an alternative qualified supplier and carries active product status with ROHS3 compliance. The operating temperature maximum is specified as 125°C. Selection of this part is appropriate when supply chain diversification or Vishay component standardization is required.

Both substitute parts satisfy all critical electrical and mechanical parameters required for direct functional replacement of the obsolete BAT54C_G.

Frequently Asked Questions (FAQ)

Q: Can BAT54CLT1G be used as a direct replacement for BAT54C_G?

A: Yes. BAT54CLT1G meets all electrical specifications including reverse voltage (30 V), rectified current (200 mA), forward voltage (800 mV @ 100 mA), reverse recovery time (5 ns), and reverse leakage current (2 µA @ 25 V). Package configuration and mounting type are identical. The primary difference is product status (active versus obsolete) and operating temperature range (-55°C ~ 125°C versus -55°C ~ 150°C).

Q: What is the difference between BAT54CLT1G and BAT54C-E3-08?

A: Both parts are electrically equivalent and use identical SOT-23-3 packaging. The primary differences are manufacturer (onsemi versus Vishay) and packaging format (Cut Tape & Digi-Reel versus Tape & Reel). Both carry ROHS3 compliance and active product status. Selection between these parts depends on supplier availability, procurement preferences, and component standardization requirements.

Q: Are there any temperature limitations when substituting BAT54CLT1G for BAT54C_G?

A: BAT54CLT1G specifies a maximum junction operating temperature of 125°C, compared to 150°C for the original BAT54C_G. Applications requiring sustained junction temperatures above 125°C require thermal analysis to confirm compatibility. For applications operating within -55°C to 125°C, no thermal limitations apply.

Q: Is the SOT-23-3 package identical across all three parts?

A: Yes. BAT54C_G, BAT54CLT1G, and BAT54C-E3-08 all use the TO-236-3 (SC-59, SOT-23-3) surface mount package. Pin configuration and footprint are identical, enabling direct PCB layout compatibility.

Q: What is the significance of the "1 Pair Common Cathode" configuration?

A: This configuration indicates the diode array contains two independent Schottky diodes with a shared cathode connection. This topology is used in applications requiring dual diode functionality with a common return path, such as OR-ing circuits, protection networks, and signal switching applications.

Q: Are BAT54CLT1G and BAT54C-E3-08 suitable for new product designs?

A: Yes. Both parts carry active product status and ROHS3 compliance, making them appropriate for new designs. BAT54CLT1G is recommended as the primary choice due to manufacturer continuity with the original BAT54C_G. BAT54C-E3-08 is suitable when multi-source qualification or Vishay standardization is required.