BAV70_D87Z Equivalent & Substitute Parts

Part Overview

The BAV70_D87Z is a general-purpose diode array manufactured by onsemi, configured as 1 pair common cathode with a maximum reverse voltage of 70 V and average rectified current of 200 mA per diode. The device is housed in a surface mount SOT-23-3 package and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts maintain the same diode configuration and package type while offering comparable or enhanced electrical performance characteristics.

Key Parameters

Parameter	BAV70_D87Z
Diode Configuration	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	70 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
Operating Temperature - Junction (Max)	150°C
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the BAV70_D87Z is determined by the following critical parameters: diode configuration (1 pair common cathode), package type (SOT-23-3), mounting method (surface mount), and electrical ratings (reverse voltage, average rectified current, forward voltage, and reverse recovery time). Substitute parts must maintain identical diode configuration and package compatibility to ensure direct replacement in existing PCB layouts.

Substitute parts are grouped into two categories:

Direct Substitutes (Similar Manufacturer Part Numbers): Parts that maintain the 70 V reverse voltage rating with 200 mA current capability or higher, ensuring full compatibility with the original design specifications.

Parametric Equivalents: Parts from alternative manufacturers that meet the core electrical requirements with minor variations in secondary parameters such as reverse leakage current or operating temperature range, while maintaining the same package and configuration.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Package	Product Status
BAV70_D87Z	onsemi	70 V	200 mA	1.25 V @ 150 mA	6 ns	SOT-23-3	Obsolete
BAV70LT1G	onsemi	100 V	200 mA (DC)	1.25 V @ 150 mA	6 ns	SOT-23-3	Active
BAV70LT3G	onsemi	100 V	200 mA (DC)	1.25 V @ 150 mA	6 ns	SOT-23-3	Active
BAV70-7-F	Diodes Incorporated	75 V	150 mA	1.25 V @ 150 mA	4 ns	SOT-23-3	Active
BAV70-E3-08	Vishay General Semiconductor - Diodes Division	70 V	250 mA (DC)	1.25 V @ 150 mA	6 ns	SOT-23-3	Active
BAV70-TP	Micro Commercial Co	75 V	150 mA	855 mV @ 10 mA	4 ns	SOT-23-3	Active
BAV70E6433HTMA1	Infineon Technologies	80 V	200 mA (DC)	1.25 V @ 150 mA	4 ns	SOT-23-3	Last Time Buy
ACDST-70-G	Comchip Technology	70 V	200 mA	1.25 V @ 150 mA	6 ns	SOT-23-3	Active
BAV70 RFG	Taiwan Semiconductor Corporation	70 V	200 mA	1.25 V @ 150 mA	6 ns	SOT-23-3	Active

Engineering Selection Recommendations

For Direct Replacement with Enhanced Voltage Rating: BAV70LT1G and BAV70LT3G from onsemi are active products with 100 V reverse voltage rating, providing increased design margin over the original 70 V specification. Both parts maintain identical current and forward voltage characteristics. BAV70LT1G has significantly higher inventory availability (605,400 pcs) compared to BAV70LT3G (75,400 pcs). Both are RoHS3 compliant and suitable for new designs.

For Exact Voltage and Current Match: BAV70-E3-08 from Vishay General Semiconductor maintains the 70 V reverse voltage rating with enhanced current capability (250 mA versus 200 mA), providing additional design margin. This part is active and RoHS3 compliant with substantial inventory (305,200 pcs).

For Parametric Equivalence with Automotive Qualification: ACDST-70-G from Comchip Technology matches the original 70 V and 200 mA specifications exactly and includes AEC-Q101 automotive qualification. This part is active with 72,300 pcs in inventory and is suitable for applications requiring automotive-grade components.

For Alternative Manufacturer Options: BAV70 RFG from Taiwan Semiconductor Corporation provides exact electrical equivalence to the original part with active product status and RoHS3 compliance. This option is suitable when supply diversification is required.

Parts with Reduced Current Rating: BAV70-7-F from Diodes Incorporated and BAV70-TP from Micro Commercial Co both feature 75 V reverse voltage with reduced current rating (150 mA). These parts are suitable only for applications where the 150 mA current limit is acceptable.

Parts with Limited Availability: BAV70E6433HTMA1 from Infineon Technologies is classified as Last Time Buy and should not be selected for new designs requiring long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can BAV70LT1G replace BAV70_D87Z directly? A: Yes. BAV70LT1G maintains identical diode configuration, package type, and current rating. The 100 V reverse voltage rating exceeds the original 70 V specification, providing enhanced voltage margin. Forward voltage and reverse recovery time are identical. The part is active with high inventory availability.

Q: What is the difference between BAV70LT1G and BAV70LT3G? A: Both parts are electrically identical with 100 V reverse voltage, 200 mA current, and SOT-23-3 packaging. The primary difference is inventory availability: BAV70LT1G has 605,400 pcs in stock versus 75,400 pcs for BAV70LT3G. Both are active onsemi products with RoHS3 compliance.

Q: Why do some substitute parts have lower current ratings? A: BAV70-7-F and BAV70-TP are rated for 150 mA average rectified current compared to the original 200 mA. These parts are suitable only for applications where circuit current requirements do not exceed 150 mA. Verify circuit design requirements before selection.

Q: Is ACDST-70-G suitable for automotive applications? A: Yes. ACDST-70-G includes AEC-Q101 automotive qualification and is specifically designed for automotive-grade applications. It matches the original 70 V and 200 mA specifications exactly.

Q: What is the significance of "Last Time Buy" status for BAV70E6433HTMA1? A: Last Time Buy status indicates that the manufacturer will discontinue production after a specified date. This part should not be selected for new designs requiring long-term supply assurance. Active alternatives such as BAV70LT1G or ACDST-70-G are recommended.

Q: Are all substitute parts RoHS3 compliant? A: All active substitute parts listed are RoHS3 compliant. The original BAV70_D87Z does not specify RoHS status due to its obsolete classification. Verify RoHS compliance requirements for your specific application.

Q: Can BAV70-E3-08 be used in place of BAV70_D87Z? A: Yes. BAV70-E3-08 maintains the 70 V reverse voltage rating and provides enhanced current capability (250 mA versus 200 mA). All other electrical parameters match the original specification. The part is active and RoHS3 compliant.

Q: What packaging options are available for substitutes? A: All substitute parts use the same SOT-23-3 package (also designated TO-236-3 or SC-59). Packaging variations exist only in tape format: Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR). Verify your assembly process requirements when selecting packaging format.

Q: Is BAV70 RFG a suitable alternative? A: Yes. BAV70 RFG from Taiwan Semiconductor Corporation provides exact electrical equivalence with 70 V reverse voltage and 200 mA current rating. The part is active with RoHS3 compliance and is suitable when supply diversification from multiple manufacturers is required.

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