BAW56_D87Z Equivalent & Substitute Parts

Part Overview

The BAW56_D87Z is a general-purpose diode array manufactured by onsemi, configured as 1 pair common anode with 85 V reverse voltage rating and 200 mA average rectified current per diode. The device is housed in a SOT-23-3 surface mount package. This part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Anode
Voltage - DC Reverse (Vr) (Max)	85 V
Current - Average Rectified (Io) (per Diode)	200 mA
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 (Max)	150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BAW56_D87Z is determined by the following critical parameters:

Configuration Match: All substitute parts maintain the 1 pair common anode diode configuration and SOT-23-3 surface mount package, ensuring mechanical and electrical compatibility at the circuit board level.

Voltage Rating Compatibility: Substitute parts are grouped based on reverse voltage (Vr) ratings. Parts with equal or higher Vr ratings (85 V or greater) provide direct substitution capability. Parts with lower Vr ratings (70 V, 75 V) are suitable only for applications where the circuit voltage does not exceed the substitute part's rating.

Current Rating Compatibility: Substitute parts with equal or higher average rectified current ratings (200 mA or greater) provide direct substitution. Parts with lower current ratings (140 mA) are suitable only for applications where circuit current does not exceed the substitute part's rating.

Speed Classification: The BAW56_D87Z is classified as small signal with any speed. Substitute parts maintaining this classification or faster recovery characteristics remain functionally compatible.

Temperature Range: Operating temperature maximum of 150°C is maintained across all substitute options.

Product Status and Compliance: Active product status and RoHS3 compliance are preferred for new designs and long-term availability.

Parameter Comparison

Parameter	BAW56_D87Z (Main)	BAW156-7-F	BAW56-7-F	BAW56-E3-08	BAW56-TP	MMBD3004A-7-F
Manufacturer	onsemi	Diodes Incorporated	Diodes Incorporated	Vishay General Semiconductor	Micro Commercial Co	Diodes Incorporated
Product Status	Obsolete	Active	Active	Active	Active	Obsolete
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	70 V	75 V	300 V
Current - Average Rectified (Io) (per Diode)	200 mA	140 mA	300 mA	250 mA	250 mA	225 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA	1.1 V @ 50 mA	1.25 V @ 150 mA	1.25 V @ 150 mA	855 mV @ 10 mA	1.25 V @ 200 mA
Reverse Recovery Time (trr)	6 ns	3 µs	4 ns	6 ns	4 ns	50 ns
Current - Reverse Leakage @ Vr	2.5 µA @ 70 V	5 nA @ 75 V	2.5 µA @ 75 V	2.5 µA @ 70 V	2.5 µA @ 75 V	100 nA @ 240 V
Operating Temperature - Junction	150°C (Max)	-65°C ~ 150°C	-65°C ~ 150°C	150°C (Max)	-55°C ~ 150°C	-65°C ~ 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	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Substitutes (Equal or Superior Ratings):

BAW156-7-F and BAW56-TP are the primary substitutes for the BAW56_D87Z. Both parts maintain the 85 V / 75 V reverse voltage rating and provide equal or superior current handling (140 mA and 250 mA respectively). BAW156-7-F is manufactured by Diodes Incorporated with active product status and RoHS3 compliance, offering long-term availability. BAW56-TP is manufactured by Micro Commercial Co, also with active status and RoHS3 compliance. Both are available in high inventory quantities.

Conditional Substitutes (Lower Voltage Rating):

BAW56-7-F and BAW56-E3-08 feature reduced reverse voltage ratings (75 V and 70 V respectively) compared to the BAW56_D87Z (85 V). These parts are suitable only for applications where the maximum circuit voltage does not exceed their respective ratings. Both maintain active product status and RoHS3 compliance. BAW56-7-F provides superior current handling at 300 mA.

Alternative with Higher Voltage Rating:

MMBD3004A-7-F provides a significantly higher reverse voltage rating of 300 V, suitable for high-voltage applications. However, this part is classified as obsolete, limiting its suitability for new designs despite its technical compatibility. The higher voltage rating introduces potential design trade-offs in forward voltage characteristics.

Compliance and Availability:

For new designs and long-term procurement, BAW156-7-F and BAW56-TP are recommended due to active product status, RoHS3 compliance, and substantial inventory availability. These parts eliminate obsolescence risk associated with the BAW56_D87Z.

Frequently Asked Questions (FAQ)

Q: Can BAW156-7-F directly replace BAW56_D87Z in all applications?

A: BAW156-7-F maintains the same 85 V reverse voltage rating and 1 pair common anode configuration. However, its current rating is 140 mA compared to the BAW56_D87Z's 200 mA. Direct replacement is suitable only for applications where circuit current does not exceed 140 mA per diode.

Q: What is the difference between BAW56-7-F and BAW56-TP?

A: Both parts are based on the BAW56 platform with 75 V reverse voltage and 250 mA current ratings. BAW56-7-F is manufactured by Diodes Incorporated, while BAW56-TP is manufactured by Micro Commercial Co. Both are active products with RoHS3 compliance. Selection between them depends on supplier availability and procurement preferences.

Q: Can I use BAW56-E3-08 as a substitute if my circuit operates at 85 V?

A: No. BAW56-E3-08 has a maximum reverse voltage rating of 70 V. Using this part in a circuit with 85 V operation exceeds its voltage specification and may result in device failure or reduced reliability.

Q: Why is MMBD3004A-7-F listed as a substitute if it is obsolete?

A: MMBD3004A-7-F is included in the substitute list based on the provided input data. However, its obsolete status makes it unsuitable for new designs. For ongoing applications currently using this part, BAW156-7-F or BAW56-TP are recommended as active alternatives.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts use the SOT-23-3 surface mount package, ensuring mechanical compatibility with the BAW56_D87Z. Packaging formats (Tape & Reel, Cut Tape) vary by supplier but do not affect circuit board integration.

Q: What is the significance of the reverse recovery time (trr) differences?

A: The BAW56_D87Z has a trr of 6 ns, classified as small signal. Substitute parts with faster recovery times (BAW56-7-F and BAW56-TP at 4 ns) provide improved switching performance. BAW156-7-F at 3 µs represents slower recovery but remains functionally compatible for small signal applications.

Q: Do all substitute parts meet RoHS3 compliance?

A: All active substitute parts (BAW156-7-F, BAW56-7-F, BAW56-E3-08, BAW56-TP) are RoHS3 compliant. The BAW56_D87Z RoHS status is not specified in the provided data. MMBD3004A-7-F is RoHS3 compliant but obsolete.

Q: What is the operating temperature range for each substitute?

A: BAW56_D87Z and BAW56-E3-08 specify a maximum junction temperature of 150°C without a minimum. BAW156-7-F, BAW56-7-F, BAW56-TP, and MMBD3004A-7-F specify operating ranges from -65°C to -55°C minimum to 150°C maximum, providing broader temperature coverage.

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