BAW156-F Equivalent & Substitute Parts

Part Overview

The BAW156-F is a general-purpose diode array manufactured by Diodes Incorporated, configured as 1 pair common anode with a maximum reverse voltage of 85 V and average rectified current of 140 mA per diode. The device is housed in a SOT-23-3 surface mount package and operates across a junction temperature range of -65°C to 150°C.

The BAW156-F is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts must maintain functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Anode	—
Voltage - DC Reverse (Vr) (Max)	85	V
Current - Average Rectified (Io) (per Diode)	140	mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 50 mA	—
Reverse Recovery Time (trr)	3	µs
Current - Reverse Leakage @ Vr	5 nA @ 75 V	—
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the BAW156-F is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Diode configuration: 1 Pair Common Anode
Mounting type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3
Technology: Standard

Electrical Performance Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 85 V
Current - Average Rectified (Io) (per Diode): Must equal or exceed 140 mA
Operating Temperature - Junction: Must encompass -65°C to 150°C range

Substitute parts are classified into three categories based on their relationship to the BAW156-F:

Parametric Equivalent: Parts that maintain identical electrical specifications and packaging. These parts are direct functional replacements with no design modifications required.

Direct Manufacturer Alternative: Parts that meet or exceed the electrical requirements but may originate from different manufacturers. These parts satisfy the functional requirements within the specified parameter ranges.

MFR Recommended Alternative: Parts recommended by manufacturers as functional substitutes. These parts may have enhanced specifications or additional certifications while maintaining core compatibility.

Parameter Comparison

Parameter	BAW156-F (Main)	BAW156-7-F	BAW156-TP	BAW156,215	BAW56LT1G	BAW56LT3G
Manufacturer	Diodes Incorporated	Diodes Incorporated	Micro Commercial Co	Nexperia USA Inc.	onsemi	onsemi
Product Status	Obsolete	Active	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	1 Pair Common Anode
Voltage - DC Reverse (Vr) (Max)	85 V	85 V	75 V	75 V	70 V	70 V
Current - Average Rectified (Io) (per Diode)	140 mA (DC)	140 mA (DC)	160 mA	160 mA (DC)	200 mA (DC)	200 mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 50 mA	1.1 V @ 50 mA	Not specified	1.25 V @ 150 mA	1.25 V @ 150 mA	1.25 V @ 150 mA
Reverse Recovery Time (trr)	3 µs	3 µs	3 µs	3 µs	6 ns	6 ns
Current - Reverse Leakage @ Vr	5 nA @ 75 V	5 nA @ 75 V	5 nA @ 75 V	5 nA @ 75 V	2.5 µA @ 70 V	2.5 µA @ 70 V
Operating Temperature - Junction	-65 to 150°C	-65 to 150°C	-65 to 150°C	150°C (Max)	-55 to 150°C	-55 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Not specified	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

BAW156-7-F (Parametric Equivalent - Diodes Incorporated)

The BAW156-7-F is the direct parametric equivalent of the BAW156-F. Both parts are manufactured by Diodes Incorporated and maintain identical electrical specifications: 85 V reverse voltage, 140 mA average rectified current, 1.1 V forward voltage at 50 mA, and 3 µs reverse recovery time. The BAW156-7-F is currently in active production status with 125,100 units in stock. The primary difference is packaging format: BAW156-7-F is supplied in Tape & Reel (TR) configuration, whereas the BAW156-F was supplied in standard packaging. This part is suitable for direct substitution in all applications where the BAW156-F was originally specified. ROHS3 compliance and MSL 1 rating are maintained.

BAW156-TP (Direct Manufacturer Alternative - Micro Commercial Co)

The BAW156-TP is manufactured by Micro Commercial Co and provides enhanced electrical performance relative to the BAW156-F. The part maintains the same 1 Pair Common Anode configuration, SOT-23-3 package, and 3 µs reverse recovery time. The BAW156-TP exceeds the BAW156-F specifications with 160 mA average rectified current (versus 140 mA) and maintains a 75 V reverse voltage rating. The operating temperature range (-65°C to 150°C) is identical. This part is currently in active production with 968 units in stock. The BAW156-TP is suitable for applications where the BAW156-F was specified, provided the 75 V reverse voltage rating is acceptable for the circuit design.

BAW156,215 (MFR Recommended Alternative - Nexperia USA Inc.)

The BAW156,215 is manufactured by Nexperia USA Inc. and is designated as a manufacturer-recommended substitute. This part maintains the 1 Pair Common Anode configuration and SOT-23-3 package. The BAW156,215 provides 160 mA average rectified current and 75 V reverse voltage, exceeding the BAW156-F current rating while operating at a lower voltage rating. The part includes AEC-Q100 automotive qualification and is ROHS3 compliant with MSL 1 rating. The BAW156,215 is currently in active production with 39,586 units in stock. This part is suitable for applications where automotive-grade qualification is required or where the 75 V reverse voltage rating is acceptable.

BAW56LT1G (MFR Recommended Alternative - onsemi)

The BAW56LT1G is manufactured by onsemi and is designated as a manufacturer-recommended substitute. This part maintains the 1 Pair Common Anode configuration and SOT-23-3 package. The BAW56LT1G provides enhanced current handling with 200 mA average rectified current and operates at 70 V reverse voltage. The reverse recovery time is improved to 6 ns (versus 3 µs for the BAW156-F). The operating temperature range is -55°C to 150°C. The part is supplied in Cut Tape (CT) & Digi-Reel® packaging and is currently in active production with 305,200 units in stock. ROHS3 compliance and MSL 1 rating are maintained. This part is suitable for applications where the BAW156-F was specified, provided the 70 V reverse voltage rating is acceptable and the improved switching characteristics are compatible with the circuit design.

BAW56LT3G (MFR Recommended Alternative - onsemi)

The BAW56LT3G is manufactured by onsemi and is designated as a manufacturer-recommended substitute. This part is electrically identical to the BAW56LT1G with 200 mA average rectified current, 70 V reverse voltage, and 6 ns reverse recovery time. The primary difference is packaging format: BAW56LT3G is supplied in Tape & Reel (TR) configuration. The operating temperature range is -55°C to 150°C. The part is currently in active production with 90,100 units in stock. ROHS3 compliance and MSL 1 rating are maintained. This part is suitable for applications where the BAW156-F was specified, provided the 70 V reverse voltage rating is acceptable and the improved switching characteristics are compatible with the circuit design.

Frequently Asked Questions (FAQ)

Q: Can the BAW156-7-F be used as a direct replacement for the BAW156-F?

A: Yes. The BAW156-7-F is a parametric equivalent with identical electrical specifications and package type. The only difference is the packaging format (Tape & Reel versus standard packaging). No circuit modifications are required.

Q: What is the key difference between the BAW156-F and the BAW156-TP?

A: The BAW156-TP has a lower reverse voltage rating (75 V versus 85 V) but provides higher average rectified current (160 mA versus 140 mA). Both parts use the same SOT-23-3 package and have identical reverse recovery time. The BAW156-TP is suitable if the circuit operates below 75 V and requires the additional current capacity.

Q: Are the BAW56LT1G and BAW56LT3G interchangeable?

A: Yes, electrically. Both parts have identical electrical specifications: 70 V reverse voltage, 200 mA average rectified current, and 6 ns reverse recovery time. The difference is packaging format: BAW56LT1G is supplied in Cut Tape & Digi-Reel®, while BAW56LT3G is supplied in Tape & Reel. Selection depends on assembly equipment compatibility.

Q: Can I use a BAW56LT1G in place of the BAW156-F?

A: The BAW56LT1G meets the core functional requirements (1 Pair Common Anode, SOT-23-3 package, surface mount) and exceeds the current rating (200 mA versus 140 mA). However, the reverse voltage rating is lower (70 V versus 85 V). Substitution is acceptable only if the circuit operates below 70 V reverse voltage. The improved reverse recovery time (6 ns versus 3 µs) is compatible with standard applications.

Q: What is the significance of the reverse voltage rating difference?

A: The reverse voltage rating indicates the maximum voltage the diode can withstand in reverse bias without breakdown. The BAW156-F is rated for 85 V, while the BAW56LT series is rated for 70 V. If the circuit design requires operation above 70 V in reverse bias, the BAW56LT series is not suitable. The BAW156-7-F or BAW156-TP maintain higher voltage ratings.

Q: Does the BAW156,215 have any special certifications?

A: Yes. The BAW156,215 includes AEC-Q100 automotive qualification, making it suitable for automotive applications. All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the difference between reverse recovery time specifications?

A: The BAW156-F and BAW156-TP have 3 µs reverse recovery time, while the BAW56LT1G and BAW56LT3G have 6 ns reverse recovery time. The faster recovery time of the BAW56 series indicates improved switching performance. This difference is compatible with standard rectifier applications but may affect high-frequency circuit behavior.

Q: Which substitute part has the highest current capacity?

A: The BAW56LT1G and BAW56LT3G both provide 200 mA average rectified current, which is the highest among all substitute options. The BAW156-TP provides 160 mA, and the BAW156-7-F provides 140 mA (matching the original BAW156-F).

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant except the BAW156-TP, for which RoHS status is not specified in the provided data. All parts maintain REACH Unaffected status and EAR99 ECCN classification.

Q: What packaging options are available for the substitute parts?

A: BAW156-7-F is supplied in Tape & Reel (TR). BAW156-TP is supplied in Bulk. BAW156,215 is supplied in Tape & Reel (TR). BAW56LT1G is supplied in Cut Tape (CT) & Digi-Reel®. BAW56LT3G is supplied in Tape & Reel (TR). Selection depends on assembly equipment and production volume requirements.

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