STPS640CBY-TR Equivalent & Substitute Parts

Part Overview

The STPS640CBY-TR is an active Schottky diode array manufactured by STMicroelectronics, configured as 1 pair common cathode with a maximum reverse voltage rating of 40 V and average rectified current of 3 A per diode. The device is packaged in TO-252-3 DPAK surface mount configuration and is qualified to AEC-Q101 automotive standards. This part is suitable for applications requiring fast recovery rectification in automotive and industrial environments. Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when procurement requirements necessitate alternative packaging or supplier configurations.

Substiute Parts

STPS640CBY-TR

STMicroelectronicsIn Stock: 10262STPS640CBY-TR Datasheet

Current PartRFQ

STPS640CB-TR

STMicroelectronicsIn Stock: 10156STPS640CB-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPS640CBY-TR is determined by equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Diode configuration: 1 Pair Common Cathode
• Technology: Schottky
• Maximum reverse voltage (Vr): 40 V
• Average rectified current (Io): 3 A per diode
• Forward voltage (Vf): 630 mV @ 3 A
• Reverse leakage current: 100 µA @ 40 V
• Recovery speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters (Must Match):

• Package type: TO-252-3, DPAK (2 Leads + Tab), SC-63
• Mounting type: Surface Mount

Compliance Parameters (Must Match):

• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowed Variation:

• Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® configurations are interchangeable for the same base part number
• Operating temperature maximum: Substitute parts with identical or higher maximum junction temperature are acceptable

The STPS640CB-TR is identified as a parametric equivalent based on identical electrical and mechanical specifications with variation only in packaging format.

Parameter Comparison

Engineering Selection Recommendations

The STPS640CB-TR is a direct parametric equivalent to the STPS640CBY-TR. Both parts share identical electrical characteristics, mechanical packaging, and compliance certifications. Selection between these parts is determined by procurement and supply chain requirements rather than technical performance differences.

Selection Criteria:

1. Packaging Format Requirement: The STPS640CBY-TR is supplied in Tape & Reel (TR) format, suitable for high-volume automated assembly. The STPS640CB-TR is supplied in Cut Tape (CT) & Digi-Reel® format, suitable for lower-volume or mixed-component orders.

2. Inventory Availability: Both parts maintain active product status with STMicroelectronics. Current inventory levels are 10,200 pcs for STPS640CBY-TR and 10,100 pcs for STPS640CB-TR.

3. Compliance Assurance: Both parts are AEC-Q101 qualified, ROHS3 compliant, and rated for automotive applications. Both maintain MSL 1 (Unlimited) moisture sensitivity classification.

4. Supply Chain Continuity: The STPS640CB-TR provides alternative sourcing when STPS640CBY-TR availability is constrained. Both parts are manufactured by STMicroelectronics and share the same base product number (STPS640), ensuring long-term design continuity.

Frequently Asked Questions (FAQ)

Q: Can STPS640CB-TR be used as a direct replacement for STPS640CBY-TR in existing designs?

A: Yes. The STPS640CB-TR is a parametric equivalent with identical electrical specifications, forward voltage characteristics, reverse voltage rating, current capacity, and package configuration. The only difference is the packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). No circuit redesign or board layout modification is required.

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

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on a reel, optimized for high-speed automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging supplies components on cut tape segments or alternative reel formats, suitable for lower-volume production or mixed-component orders. Both formats contain identical components in the same TO-252-3 DPAK package.

Q: Are both parts suitable for automotive applications?

A: Yes. Both STPS640CBY-TR and STPS640CB-TR are automotive-grade components qualified to AEC-Q101 standards. Both are suitable for automotive rectification circuits operating within the specified voltage and current parameters.

Q: What is the operating temperature range for these parts?

A: Both parts operate across a junction temperature range of -40°C to 150°C, suitable for automotive and industrial environments with extended temperature requirements.

Q: Do these parts require special handling or storage considerations?

A: Both parts are classified as MSL 1 (Unlimited), indicating unlimited shelf life and no moisture sensitivity restrictions. Standard electronic component handling practices apply.

Q: Can these Schottky diodes be used in reverse polarity protection circuits?

A: These parts are configured as a 1 pair common cathode diode array. Application suitability depends on circuit topology and voltage/current requirements. Verify that the 40 V reverse voltage rating and 3 A current capacity meet the specific circuit requirements.

Q: What is the forward voltage drop at rated current?

A: The maximum forward voltage is 630 mV at 3 A for both parts. This specification determines power dissipation and thermal management requirements in rectification applications.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. Both maintain identical regulatory and environmental compliance status.