BAS70-HF Equivalent & Substitute Parts

Part Overview

The BAS70-HF is an active Schottky diode manufactured by Comchip Technology, designed for surface mount applications in the SOT-23-3 package. This component operates at 70V reverse voltage with 70mA average rectified current, serving as a small-signal rectifier in electronic circuits. The part is RoHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility across multiple manufacturers is required while maintaining identical electrical and mechanical performance.

Substiute Parts

BAS70-HF

Comchip TechnologyIn Stock: 641BAS70-HF Datasheet

Current PartRFQ

BAS70 RFG

Taiwan Semiconductor CorporationIn Stock: 691BAS70 RFG Datasheet

Parametric EquivalentRFQ

BAS70-7-F

Diodes IncorporatedIn Stock: 125133BAS70-7-F Datasheet

Parametric EquivalentRFQ

BAS70-TP

Micro Commercial CoIn Stock: 24253BAS70-TP Datasheet

Parametric EquivalentRFQ

BAS70HE3-TP

Micro Commercial CoIn Stock: 5659BAS70HE3-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAS70-HF is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 70 V
• Current - Average Rectified (Io): 70 mA
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 15 mA
• Reverse Recovery Time (trr): 5 ns
• Technology: Schottky

Mechanical Parameters (Must Match):

• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 125°C

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All substitute parts listed maintain these core parameters. Minor variations in reverse leakage current and capacitance measurement conditions do not affect functional substitution. Packaging format (Tape & Reel vs. Cut Tape) represents a supply chain variation only and does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance, ensuring regulatory alignment with the BAS70-HF. Selection among equivalent parts is determined by supply availability and packaging format requirements:

BAS70 RFG (Taiwan Semiconductor Corporation): Parametric equivalent with 673 units in stock. Suitable for applications requiring standard-grade Schottky diodes with unrestricted supply chain sourcing.

BAS70-7-F (Diodes Incorporated): Parametric equivalent with highest inventory availability (125,100 units). Supplied in Cut Tape and Digi-Reel format. Appropriate for high-volume production runs and applications with flexible packaging requirements.

BAS70-TP (Micro Commercial Co): Parametric equivalent with 24,150 units in stock. Supplied in Tape & Reel format matching the BAS70-HF packaging specification. Direct format compatibility with existing assembly processes.

BAS70HE3-TP (Micro Commercial Co): Parametric equivalent with automotive-grade qualification (AEC-Q101) and 5,618 units in stock. Designated for automotive and mission-critical applications requiring enhanced reliability certification. Supplied in Tape & Reel format.

All parts operate across the identical temperature range (-55°C to 125°C) and maintain MSL 1 (Unlimited) moisture sensitivity rating, eliminating environmental handling constraints during assembly and storage.

Frequently Asked Questions (FAQ)

Q: Can BAS70-7-F replace BAS70-HF in existing designs?

A: Yes. The BAS70-7-F maintains identical electrical parameters (70V reverse voltage, 70mA average rectified current, 1V forward voltage at 15mA, 5ns reverse recovery time) and operates across the same temperature range (-55°C to 125°C). Both are RoHS3 compliant with MSL 1 rating. The primary difference is packaging format (Cut Tape vs. Tape & Reel) and manufacturer, which do not affect circuit performance.

Q: What is the difference between BAS70-TP and BAS70HE3-TP?

A: Both parts are manufactured by Micro Commercial Co and share identical electrical specifications. The BAS70HE3-TP carries automotive-grade qualification (AEC-Q101) and is designated for automotive and high-reliability applications. The BAS70-TP is standard-grade. Selection depends on application requirements; automotive applications require the AEC-Q101 qualified variant.

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

A: All substitute parts use the TO-236-3 / SC-59 / SOT-23-3 package for surface mount assembly. Packaging format (Tape & Reel vs. Cut Tape) varies by manufacturer and supplier but does not affect mechanical compatibility or PCB assembly processes.

Q: Does reverse leakage current variation affect substitution?

A: The BAS70-HF specifies 200 nA @ 50V reverse leakage. Substitute parts specify either 100 nA @ 50V or 200 nA @ 70V. These variations remain within acceptable operating margins for small-signal Schottky diode applications and do not prevent functional substitution.

Q: Can BAS70HE3-TP be used in non-automotive applications?

A: Yes. The BAS70HE3-TP maintains all standard electrical and mechanical specifications of the BAS70-HF. AEC-Q101 qualification represents an additional certification level and does not restrict use in non-automotive circuits. The part is fully compatible with standard-grade applications.

Q: What is the significance of capacitance measurement conditions?

A: The BAS70-HF specifies capacitance at 1V, while substitute parts specify capacitance at 0V. Both measurements are taken at 1MHz. This variation reflects different test conditions and does not affect circuit performance in typical small-signal rectifier applications.

Q: Are all substitute parts REACH compliant?

A: The BAS70-HF does not specify REACH status in provided documentation. Substitute parts BAS70 RFG, BAS70-7-F, BAS70-TP, and BAS70HE3-TP all carry REACH Unaffected status, indicating compliance with REACH regulations.