BAT254,115 Equivalent & Substitute Parts

Part Overview

The BAT254,115 is a Schottky diode manufactured by NXP USA Inc., rated for 30V DC reverse voltage and 200mA average rectified current in a surface mount SOD-110 package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The part is RoHS3 compliant and REACH unaffected, with unlimited moisture sensitivity level (MSL 1).

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	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
Capacitance @ Vr, F	10 pF @ 1V, 1MHz
Technology	Schottky
Mounting Type	Surface Mount
Package / Case	SOD-110
Operating Temperature - Junction (Max)	125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the BAT254,115 is determined by strict electrical and mechanical parameter matching within the Schottky diode category. The following criteria establish substitution validity:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V (exact match required)
Current - Average Rectified (Io): 200 mA (exact match required)
Voltage - Forward (Vf) (Max) @ If: 800 mV @ 100 mA (exact match required)
Reverse Recovery Time (trr): 5 ns (exact match required)
Current - Reverse Leakage @ Vr: 2 µA @ 25 V (exact match required)
Capacitance @ Vr, F: 10 pF @ 1V, 1MHz (exact match required)
Technology: Schottky (exact match required)
Mounting Type: Surface Mount (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

Secondary Considerations:

Package / Case: SOD-110 (original), SOD-123, SOD-323, SOD-323F, DO-214AA (alternative packages acceptable with PCB layout verification)
Product Status: Active or Last Time Buy preferred over obsolete
Operating Temperature Range: Minimum junction temperature capability of 125°C required

Substitutes are classified into two categories: MFR Recommended (manufacturer-endorsed alternatives) and Parametric Equivalents (electrically identical with package variations).

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr	Ir @ Vr	C @ Vr, F	Package	Product Status
BAT254,115	NXP USA Inc.	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	10 pF @ 1V, 1MHz	SOD-110	Obsolete
BAT54HT1G	onsemi	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	10 pF @ 1V, 1MHz	SOD-323	Active
BAT54J,115	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	Not specified	2 µA @ 25 V	10 pF @ 1V, 1MHz	SOD-323F	Active
BAT54W-E3-08	Vishay General Semiconductor - Diodes Division	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	10 pF @ 1V, 1MHz	SOD-123	Active
BAT54W-E3-18	Vishay General Semiconductor - Diodes Division	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	10 pF @ 1V, 1MHz	SOD-123	Active
BAT54W-G3-08	Vishay General Semiconductor - Diodes Division	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	10 pF @ 1V, 1MHz	SOD-123	Active
BAT54W-G3-18	Vishay General Semiconductor - Diodes Division	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	10 pF @ 1V, 1MHz	SOD-123	Active
BAT54W-HE3-08	Vishay General Semiconductor - Diodes Division	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	10 pF @ 1V, 1MHz	SOD-123	Last Time Buy
SS23	Taiwan Semiconductor Corporation	30 V	2 A	500 mV @ 2 A	Not specified	400 µA @ 30 V	Not specified	DO-214AA (SMB)	Active

Engineering Selection Recommendations

MFR Recommended Substitutes (Manufacturer-Endorsed):

The BAT54HT1G (onsemi) and BAT54J,115 (Nexperia USA Inc.) are manufacturer-recommended alternatives. Both maintain identical electrical specifications to the BAT254,115 across all critical parameters: 30V reverse voltage, 200mA current rating, 800mV forward voltage at 100mA, 5ns reverse recovery time, and 2µA reverse leakage current. Both are active products with RoHS3 compliance. The BAT54HT1G uses SOD-323 packaging, while the BAT54J,115 uses SOD-323F packaging. These represent the primary substitution path for obsolete BAT254,115 applications.

Parametric Equivalent Substitutes (Electrically Identical):

The Vishay BAT54W series diodes (BAT54W-E3-08, BAT54W-E3-18, BAT54W-G3-08, BAT54W-G3-18, and BAT54W-HE3-08) are parametric equivalents with identical electrical characteristics to the BAT254,115. All maintain 30V reverse voltage, 200mA current, 800mV forward voltage, 5ns reverse recovery time, 2µA reverse leakage, and 10pF capacitance. These parts use SOD-123 packaging instead of SOD-110. All are RoHS3 compliant. The BAT54W-HE3-08 carries automotive qualification (AEC-Q101) and Last Time Buy status. These substitutes require PCB layout modification to accommodate the SOD-123 package footprint.

Non-Equivalent Alternative:

The SS23 (Taiwan Semiconductor Corporation) does not qualify as a direct substitute. While it maintains the 30V reverse voltage specification, it differs significantly in current rating (2A versus 200mA), forward voltage characteristics (500mV @ 2A versus 800mV @ 100mA), reverse leakage current (400µA @ 30V versus 2µA @ 25V), and package type (DO-214AA/SMB). The SS23 is suitable only for applications requiring higher current capacity and is not interchangeable with the BAT254,115 in existing designs.

Selection Criteria:

For direct replacement in existing PCB designs without layout modification, select BAT54HT1G or BAT54J,115. For new designs permitting package changes, the Vishay BAT54W series offers multiple sourcing options and active product status. For automotive applications, BAT54W-HE3-08 provides AEC-Q101 qualification. All recommended substitutes are RoHS3 compliant and REACH unaffected, matching the original part's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can the BAT54HT1G directly replace the BAT254,115 without PCB modification?

A: The BAT54HT1G is electrically identical to the BAT254,115 but uses SOD-323 packaging instead of SOD-110. PCB footprint modification is required. The SOD-323 package is smaller than SOD-110, necessitating layout changes. Verify PCB pad spacing and trace routing compatibility before implementation.

Q: What is the difference between BAT54J,115 and BAT54HT1G?

A: Both are manufacturer-recommended substitutes with identical electrical specifications. The primary difference is packaging: BAT54J,115 uses SOD-323F while BAT54HT1G uses SOD-323. SOD-323F is a variant with different lead configuration. Select based on PCB layout requirements and available footprint space.

Q: Are the Vishay BAT54W series parts (SOD-123 package) suitable replacements?

A: Yes, the BAT54W-E3-08, BAT54W-E3-18, BAT54W-G3-08, BAT54W-G3-18, and BAT54W-HE3-08 are parametric equivalents with identical electrical performance. All maintain 30V, 200mA, 800mV forward voltage, and 5ns reverse recovery time. The SOD-123 package is smaller than SOD-110, requiring PCB redesign. These parts offer multiple sourcing options and active product status.

Q: Why is the SS23 not recommended as a substitute?

A: The SS23 has different electrical specifications: 2A current rating (versus 200mA), 500mV forward voltage at 2A (versus 800mV at 100mA), and 400µA reverse leakage (versus 2µA). These differences make it unsuitable for applications designed for the BAT254,115. The SS23 is a higher-current alternative for different application requirements.

Q: Which substitute offers the best long-term availability?

A: The Vishay BAT54W series (BAT54W-E3-08, BAT54W-E3-18, BAT54W-G3-08, BAT54W-G3-18) all have active product status with substantial inventory levels (9,024 to 21,315 pieces). The BAT54HT1G (onsemi) also has active status with 275,200 pieces in stock. The BAT54W-HE3-08 carries Last Time Buy status, indicating limited future availability.

Q: Are all recommended substitutes RoHS3 compliant?

A: Yes, all recommended substitutes (BAT54HT1G, BAT54J,115, and the Vishay BAT54W series) are RoHS3 compliant and REACH unaffected, matching the regulatory compliance of the original BAT254,115.

Q: What is the operating temperature range difference between substitutes?

A: The BAT254,115 and most Vishay BAT54W variants specify a maximum junction temperature of 125°C. The BAT54HT1G (onsemi) specifies -55°C to 150°C operating range, providing wider temperature capability. The BAT54J,115 specifies 150°C maximum junction temperature. For applications requiring extended temperature operation, the BAT54HT1G or BAT54J,115 are preferred.

Q: Can I use BAT54W-HE3-08 for new designs?

A: The BAT54W-HE3-08 is electrically suitable and carries AEC-Q101 automotive qualification. However, it has Last Time Buy status, indicating limited future availability. For new designs requiring long-term supply, select BAT54W-E3-08, BAT54W-E3-18, BAT54W-G3-08, or BAT54W-G3-18, which all have active product status.

Q: What packaging considerations apply when switching from SOD-110 to SOD-323 or SOD-123?

A: SOD-110, SOD-323, and SOD-123 are all surface mount packages with different physical dimensions and pad layouts. Switching between these packages requires PCB footprint redesign, trace routing verification, and potential assembly process adjustments. Consult package datasheets for exact dimensions and pad spacing before PCB layout modification.

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