BAS70-04-7 Equivalent & Substitute Parts

Part Overview

The BAS70-04-7 is a Schottky diode array in a 1 Pair Series Connection configuration, rated for 70 V DC reverse voltage and 70 mA average rectified current per diode. Manufactured by Diodes Incorporated, this component is packaged in the TO-236-3 (SOT-23-3) surface mount form factor and is designed for small signal applications with switching speeds up to 200 mA.

The BAS70-04-7 is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production requirements. Multiple manufacturers offer functionally compatible alternatives that maintain the core electrical specifications while providing active product status and improved compliance certifications.

Substiute Parts

BAS70-04-7

Diodes IncorporatedIn Stock: 932BAS70-04-7 Datasheet

Current PartRFQ

BAS70-04-7-F

Diodes IncorporatedIn Stock: 35251BAS70-04-7-F Datasheet

Parametric EquivalentRFQ

BAS70-04,215

Nexperia USA Inc.In Stock: 36403BAS70-04,215 Datasheet

UpgradeRFQ

BAS7004E6327HTSA1

Infineon TechnologiesIn Stock: 23371BAS7004E6327HTSA1 Datasheet

UpgradeRFQ

BAS7004E6433HTMA1

Infineon TechnologiesIn Stock: 16580BAS7004E6433HTMA1 Datasheet

UpgradeRFQ

BAS70-04FILM

STMicroelectronicsIn Stock: 59284BAS70-04FILM Datasheet

MFR RecommendedRFQ

BAS70-04W,115

Nexperia USA Inc.In Stock: 98493BAS70-04W,115 Datasheet

MFR RecommendedRFQ

BAS70-04 RFG

Taiwan Semiconductor CorporationIn Stock: 5911BAS70-04 RFG Datasheet

Parametric EquivalentRFQ

BAS70-04-TP

Micro Commercial CoIn Stock: 5102BAS70-04-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAS70-04-7 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Series Connection
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 70 V
• Current - Average Rectified (Io) (per Diode): 70 mA (DC)
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 15 mA
• Speed Classification: Small Signal ≤ 200 mA (Io), Any Speed
• Mounting Type: Surface Mount
• Package / Case: TO-236-3, SC-59, SOT-23-3 (or equivalent form factor)
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Acceptable Variations:

• Operating Temperature - Junction: May exceed the original -55°C ~ 125°C range (higher maximum ratings are acceptable)
• Reverse Recovery Time (trr): Variations from 5 ns to 100 ps are acceptable
• Current - Reverse Leakage @ Vr: Variations from 100 nA @ 50 V to 10 µA @ 70 V are acceptable
• RoHS Status: RoHS3 Compliant status is preferred over non-compliant original
• Packaging Format: Cut Tape (CT), Digi-Reel®, or Tape & Reel (TR) are all acceptable

Package Form Factor Consideration: The BAS70-04W,115 uses SOT-323 (SC-70) package instead of SOT-23-3. This represents a different physical form factor and is listed as a substitute only when package compatibility is not a constraint.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Electrical and Package Specifications):

The BAS70-04-7-F from Diodes Incorporated is the direct equivalent to the discontinued BAS70-04-7. It maintains identical electrical parameters (70 V, 70 mA, 1 V forward voltage, 5 ns recovery time) and the same SOT-23-3 package form factor. The primary difference is active product status and RoHS3 compliance certification. This part is the preferred choice for direct substitution without design modification.

Active Alternatives with Identical Package (SOT-23-3):

BAS70-04FILM (STMicroelectronics) and BAS70-04 RFG (Taiwan Semiconductor Corporation) both maintain the SOT-23-3 package and core electrical specifications. BAS70-04FILM offers extended maximum junction temperature (150°C vs. 125°C) with higher reverse leakage current (10 µA @ 70 V). BAS70-04 RFG maintains the original thermal and leakage specifications while providing active status and RoHS3 compliance.

Extended Temperature Performance:

BAS70-04-TP (Micro Commercial Co) extends the maximum junction temperature to 150°C while maintaining SOT-23-3 packaging and the original 5 ns recovery time. Reverse leakage current is specified at 200 nA @ 50 V, which is acceptable within the defined parameter range.

Alternative Package Consideration:

BAS70-04W,115 (Nexperia USA Inc.) uses the SOT-323 (SC-70) package instead of SOT-23-3. This part is suitable only when PCB layout and footprint compatibility with SOT-323 is confirmed. Forward voltage specification differs (410 mV @ 1 mA vs. 1 V @ 15 mA), indicating different measurement conditions but equivalent functional performance.

Manufacturer Alternatives with Enhanced Specifications:

BAS7004E6327HTSA1 and BAS7004E6433HTMA1 (Infineon Technologies) provide improved reverse recovery time (100 ps vs. 5 ns) and extended maximum junction temperature (150°C). Both maintain the core 70 V / 70 mA specifications and are available in active status with RoHS3 compliance. These parts are suitable when faster switching performance is beneficial.

BAS70-04,215 (Nexperia USA Inc.) offers extended maximum junction temperature (150°C) and maintains TO-236AB packaging compatibility with SOT-23-3 footprints.

Product Status and Compliance:

All recommended substitutes are in active product status with RoHS3 compliance certification, providing long-term supply assurance and regulatory compliance advantages over the discontinued, non-compliant original part.

Frequently Asked Questions (FAQ)

Q: Can BAS70-04-7-F be used as a direct replacement for BAS70-04-7?

A: Yes. BAS70-04-7-F is electrically and mechanically identical to BAS70-04-7, with the same SOT-23-3 package, 70 V rating, 70 mA current rating, and 1 V forward voltage specification. The primary differences are active product status and RoHS3 compliance. No design modification is required.

Q: What is the difference between the various Infineon part numbers (BAS7004E6327HTSA1 and BAS7004E6433HTMA1)?

A: Both Infineon parts maintain identical electrical specifications (70 V, 70 mA, 1 V forward voltage) and packaging (PG-SOT23). The difference is in packaging format: BAS7004E6327HTSA1 is supplied in Cut Tape (CT) & Digi-Reel® format, while BAS7004E6433HTMA1 is supplied in Tape & Reel (TR) format. Electrical performance and compatibility are identical.

Q: Is BAS70-04W,115 compatible with the original BAS70-04-7 PCB layout?

A: No. BAS70-04W,115 uses the SOT-323 (SC-70) package, which has a different physical footprint than the SOT-23-3 package of the original part. PCB layout modification is required for this substitution. Use this part only when package compatibility has been confirmed or when PCB redesign is acceptable.

Q: What is the significance of the extended temperature rating (150°C vs. 125°C) in substitute parts?

A: Extended maximum junction temperature ratings indicate improved thermal performance and reliability margin. Parts rated to 150°C (such as BAS70-04FILM, BAS70-04-TP, and the Infineon alternatives) provide additional operational headroom in high-temperature environments. This is a beneficial enhancement over the original 125°C specification and does not affect compatibility.

Q: How do reverse recovery time differences (5 ns vs. 100 ps) affect circuit performance?

A: Reverse recovery time (trr) determines how quickly the diode transitions from conducting to blocking state. The Infineon parts with 100 ps recovery time switch faster than the original 5 ns specification. This faster switching reduces switching losses and is beneficial in high-frequency applications. For standard low-frequency applications, both specifications are functionally equivalent.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts carry RoHS3 compliance certification. The original BAS70-04-7 is RoHS non-compliant. Substitution provides regulatory compliance improvement for new designs and production runs.

Q: What is the difference between Cut Tape (CT), Digi-Reel®, and Tape & Reel (TR) packaging formats?

A: These are supply and handling formats that do not affect electrical performance or component functionality. Cut Tape and Digi-Reel® formats are suitable for lower-volume applications and manual assembly. Tape & Reel format is optimized for high-volume automated assembly. Selection depends on production volume and assembly equipment compatibility, not electrical requirements.

Q: Can I use BAS70-04-TP if my application requires -55°C minimum operating temperature?

A: Yes. BAS70-04-TP specifies operating temperature range of -55°C ~ 150°C, which includes the -55°C minimum requirement. The extended upper temperature limit (150°C vs. 125°C) does not affect low-temperature performance.

Q: What does "1 Pair Series Connection" mean in the diode configuration?

A: This indicates the component contains two Schottky diodes internally connected in series. This configuration is used for applications requiring series-connected diode functionality, such as certain protection and switching circuits. All substitute parts maintain this same internal configuration.

Q: Is there a performance difference between STMicroelectronics BAS70-04FILM and Diodes Incorporated BAS70-04-7-F?

A: Both parts meet the core 70 V / 70 mA specifications and SOT-23-3 packaging. BAS70-04FILM has extended maximum junction temperature (150°C vs. 125°C) and higher reverse leakage current (10 µA @ 70 V vs. 100 nA @ 50 V). For most applications, these differences are not significant. Selection depends on thermal requirements and acceptable leakage current levels for the specific circuit design.