Equivalent & Substitute Parts for SMC Diode Solutions 6A1

Part Overview

The SMC Diode Solutions 6A1 is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 6 A average rectified current in an R-6 axial through-hole package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. The 6A1 employs standard recovery technology suitable for general rectification applications requiring moderate switching speeds.

Substiute Parts

6A1

SMC Diode SolutionsIn Stock: 8396A1 Datasheet

Current PartRFQ

6A01B-G

Comchip TechnologyIn Stock: 7766A01B-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SMC Diode Solutions 6A1 is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 100 V minimum
• Current - Average Rectified (Io): 6 A minimum
• Speed Classification: Standard Recovery >500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 10 µA @ 100 V maximum
• Mounting Type: Through Hole

Mechanical Equivalence Criteria:

• Package / Case: R-6, Axial
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute part 6A01B-G manufactured by Comchip Technology meets all electrical and mechanical equivalence criteria. Both parts share identical voltage and current ratings, recovery speed classification, reverse leakage specifications, and R-6 axial through-hole packaging. Substitution is valid based on these parameters alone.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SMC Diode Solutions 6A1 is classified as obsolete. The Comchip Technology 6A01B-G is classified as active, ensuring ongoing availability and manufacturing support for new designs and production continuity.

Compliance and Certification: Both parts carry REACH Unaffected status and EAR99 ECCN classification. The Comchip 6A01B-G additionally carries RoHS3 Compliance certification, providing enhanced environmental and regulatory alignment for applications subject to RoHS requirements.

Electrical Performance: The Comchip 6A01B-G exhibits a forward voltage drop of 1 V at 6 A, compared to 950 mV for the SMC 6A1. This 50 mV difference results in marginally higher power dissipation in the substitute part. The lower capacitance of the Comchip part (100 pF versus 150 pF) may provide improved high-frequency performance in switching applications.

Temperature Range: The SMC 6A1 supports a wider operating temperature range (-65°C to 175°C) compared to the Comchip 6A01B-G (-55°C to 125°C). Applications requiring operation below -55°C or above 125°C require verification against actual circuit operating conditions.

Inventory and Availability: The Comchip 6A01B-G is available in active production with 714 pieces in stock, compared to 812 pieces of the obsolete SMC 6A1. Selection of the active substitute ensures long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the Comchip 6A01B-G directly replace the SMC 6A1 in existing designs?

A: Yes, the Comchip 6A01B-G is electrically and mechanically equivalent to the SMC 6A1 across all critical parameters: 100 V reverse voltage rating, 6 A average rectified current, standard recovery speed, R-6 axial through-hole package, and identical reverse leakage specifications. Direct substitution is valid for applications operating within the Comchip part's temperature range of -55°C to 125°C.

Q: What is the significance of the forward voltage difference between the two parts?

A: The Comchip 6A01B-G exhibits a forward voltage of 1 V at 6 A, compared to 950 mV for the SMC 6A1. This 50 mV difference increases power dissipation by approximately 300 mW at full rated current. For applications with tight thermal budgets or high-frequency switching, this difference should be evaluated against circuit design margins.

Q: Are there temperature limitations when substituting the Comchip part?

A: The Comchip 6A01B-G operates over -55°C to 125°C, which is narrower than the SMC 6A1 range of -65°C to 175°C. Applications requiring operation below -55°C or above 125°C must use the original SMC 6A1 or identify alternative parts with extended temperature ratings.

Q: Does the lower capacitance of the Comchip part affect circuit performance?

A: The Comchip 6A01B-G has a capacitance of 100 pF at 4 V and 1 MHz, compared to 150 pF for the SMC 6A1. Lower capacitance generally reduces charge storage effects and may improve switching speed in high-frequency applications. For most general-purpose rectification circuits, this difference is not significant.

Q: What packaging considerations apply to both parts?

A: Both the SMC 6A1 and Comchip 6A01B-G use R-6 axial through-hole packaging, ensuring identical mechanical fit and PCB layout compatibility. Both parts carry MSL 1 (Unlimited) moisture sensitivity classification, requiring no special moisture control during storage or handling.

Q: Why is the Comchip part preferred for new designs?

A: The Comchip 6A01B-G is classified as active with ongoing manufacturing support, whereas the SMC 6A1 is obsolete. The Comchip part also carries RoHS3 Compliance certification, providing regulatory alignment for applications subject to RoHS requirements. Active product status ensures long-term availability and supply chain continuity.