BAW56TT1 Equivalent & Substitute Parts

Part Overview

The BAW56TT1 is a general-purpose diode array featuring one pair of common anode diodes rated for 70 V DC reverse voltage and 200 mA average rectified current per diode. Manufactured by onsemi in SC-75 (SOT-416) surface mount packaging, this component is classified as obsolete. Identification of equivalent and substitute parts is necessary to support ongoing design requirements and procurement continuity for applications currently utilizing this diode array configuration.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Anode
Voltage - DC Reverse (Vr) (Max)	70 V
Current - Average Rectified (Io) (per Diode)	200 mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA
Reverse Recovery Time (trr)	6 ns
Current - Reverse Leakage @ Vr	2.5 µA @ 70 V
Operating Temperature - Junction	-55°C ~ 150°C
Package / Case	SC-75, SOT-416
Mounting Type	Surface Mount
Technology	Standard

Substitute Part Grouping Explanation

Substitute parts for the BAW56TT1 are categorized based on electrical parameter compatibility and mechanical form factor alignment. The primary substitution criteria are:

Direct Electrical Equivalence Parameters:

Diode configuration (1 Pair Common Anode)
Voltage rating (70 V DC reverse)
Current rating (200 mA average rectified per diode)
Forward voltage characteristics (1.25 V @ 150 mA)
Reverse recovery time (6 ns)
Reverse leakage current (2.5 µA @ 70 V)
Operating temperature range (-55°C ~ 150°C)

Mechanical Compatibility Parameters:

Surface mount packaging (SC-75, SOT-416)

Parts meeting all electrical and mechanical parameters are classified as direct equivalents. Parts meeting electrical parameters but differing in packaging, current rating, or voltage rating are classified as parametric or similar alternatives, with specific parameter deviations noted.

Parameter Comparison

Parameter	BAW56TT1	BAW56TT1G	SBAW56TT1G	BAS70-06FILM	BAW56M,315
Manufacturer	onsemi	onsemi	onsemi	STMicroelectronics	Nexperia USA Inc.
Product Status	Obsolete	Active	Active	Active	Active
Diode Configuration	1 Pair Common Anode	1 Pair Common Anode	1 Pair Common Anode	1 Pair Common Anode	1 Pair Common Anode
Technology	Standard	Standard	Standard	Schottky	Standard
Voltage - DC Reverse (Vr) (Max)	70 V	70 V	70 V	70 V	90 V
Current - Average Rectified (Io) (per Diode)	200 mA	200 mA	200 mA	70 mA	150 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA	1.25 V @ 150 mA	1.25 V @ 150 mA	1 V @ 15 mA	1.25 V @ 150 mA
Reverse Recovery Time (trr)	6 ns	6 ns	6 ns	Not specified	4 ns
Current - Reverse Leakage @ Vr	2.5 µA @ 70 V	2.5 µA @ 70 V	2.5 µA @ 70 V	10 µA @ 70 V	500 nA @ 80 V
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	150°C (Max)	150°C (Max)
Package / Case	SC-75, SOT-416	SC-75, SOT-416	SC-75, SOT-416	TO-236-3, SC-59, SOT-23-3	SC-101, SOT-883
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Not specified	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

BAW56TT1G and SBAW56TT1G are direct electrical and mechanical equivalents to the BAW56TT1. Both parts maintain identical electrical specifications including 70 V reverse voltage, 200 mA current rating, 1.25 V forward voltage, 6 ns reverse recovery time, and 2.5 µA reverse leakage current. Both are packaged in SC-75 (SOT-416) surface mount form factor. Both parts are active products with ROHS3 compliance, providing superior regulatory status compared to the obsolete BAW56TT1. BAW56TT1G is available in higher inventory (17,200 units) and represents the direct successor to the BAW56TT1. SBAW56TT1G offers equivalent performance with 10,300 units in stock.

Parametric Alternatives (Application-Dependent Substitutes):

BAS70-06FILM (STMicroelectronics) maintains the 70 V reverse voltage and common anode configuration but differs in three critical parameters: current rating is reduced to 70 mA (versus 200 mA), technology is Schottky (versus standard), and package is SOT-23-3 (versus SOT-416). This part is suitable only for applications with current requirements not exceeding 70 mA and where the smaller SOT-23-3 package is acceptable. The Schottky technology provides lower forward voltage (1 V @ 15 mA) but higher reverse leakage (10 µA @ 70 V).

BAW56M,315 (Nexperia USA Inc.) maintains the common anode configuration and standard technology but differs in three parameters: reverse voltage is increased to 90 V, current rating is reduced to 150 mA, and package is SOT-883 (versus SOT-416). This part is suitable for applications requiring higher voltage margin (90 V) and where current requirements do not exceed 150 mA. The SOT-883 package is significantly smaller than SOT-416. This part includes automotive qualification (AEC-Q101) and demonstrates superior reverse leakage performance (500 nA @ 80 V).

Frequently Asked Questions (FAQ)

Q: Can BAW56TT1G be used as a direct replacement for BAW56TT1?

A: Yes. BAW56TT1G is a direct equivalent with identical electrical specifications (70 V, 200 mA, 1.25 V forward voltage, 6 ns recovery time, 2.5 µA leakage) and identical SC-75 (SOT-416) packaging. The primary difference is product status: BAW56TT1G is active with ROHS3 compliance, while BAW56TT1 is obsolete and RoHS non-compliant.

Q: What is the difference between BAW56TT1G and SBAW56TT1G?

A: Both parts are electrical and mechanical equivalents with identical specifications. The primary difference is the base product number (BAW56 versus SBAW56) and manufacturer designation. Both maintain 70 V reverse voltage, 200 mA current, and SC-75 packaging. Selection between these parts is based on availability and supplier preference.

Q: Can BAS70-06FILM replace BAW56TT1 in all applications?

A: No. BAS70-06FILM has a reduced current rating of 70 mA per diode (versus 200 mA) and uses Schottky technology instead of standard diode technology. It is suitable only for applications where the current requirement does not exceed 70 mA. Additionally, the SOT-23-3 package differs from the SC-75 package, requiring PCB layout modification.

Q: Is BAW56M,315 suitable for all BAW56TT1 applications?

A: BAW56M,315 is suitable for applications where the current requirement does not exceed 150 mA per diode. The part offers higher reverse voltage (90 V versus 70 V), which provides additional voltage margin. However, the SOT-883 package is significantly smaller than SC-75, requiring PCB redesign. This part includes automotive qualification (AEC-Q101).

Q: What packaging differences exist among the substitute parts?

A: BAW56TT1, BAW56TT1G, and SBAW56TT1G all use SC-75 (SOT-416) packaging and are pin-compatible. BAS70-06FILM uses SOT-23-3 (smaller package), and BAW56M,315 uses SOT-883 (smallest package). Package differences require PCB layout modification and are not interchangeable without redesign.

Q: Are all substitute parts RoHS compliant?

A: BAW56TT1G, SBAW56TT1G, BAS70-06FILM, and BAW56M,315 are all ROHS3 compliant. The original BAW56TT1 is RoHS non-compliant. For applications subject to RoHS requirements, any of the four substitute parts satisfy regulatory compliance.

Q: What is the inventory status of each substitute part?

A: BAW56TT1G has 17,200 units in stock (highest availability). SBAW56TT1G has 10,300 units. BAS70-06FILM has 23,100 units. BAW56M,315 has 758 units (lowest availability). The original BAW56TT1 has 909 units in stock but is obsolete.

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