161CMQ045 Equivalent & Substitute Parts

Part Overview

The 161CMQ045 is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division, configured as a 1 Pair Common Cathode module rated for 45 V DC reverse voltage and 160 A average rectified current per diode. The device is housed in a TO-249AA chassis mount package and is classified as obsolete. Due to its obsolete product status, identifying equivalent substitute components is necessary to maintain design continuity and ensure supply chain availability for applications requiring this specific electrical and mechanical configuration.

Substiute Parts

161CMQ045

Vishay General Semiconductor - Diodes DivisionIn Stock: 2440161CMQ045 Datasheet

Current PartRFQ

160CMQ045

Vishay General Semiconductor - Diodes DivisionIn Stock: 87016160CMQ045 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 161CMQ045 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 45 V
• Current - Average Rectified (Io) (per Diode): 160 A
• Technology: Schottky
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Current - Reverse Leakage @ Vr: 5 mA @ 45 V
• Operating Temperature - Junction: -55°C ~ 175°C

Mechanical Parameters:

• Mounting Type: Chassis Mount
• Package / Case: TO-249AA

Compliance Parameters:

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

The substitute part 160CMQ045 meets all specified electrical and mechanical requirements. Forward voltage (Vf) at rated current differs slightly (860 mV vs. 880 mV), which remains within acceptable operating margins for this device category and does not preclude functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The 160CMQ045 is the direct substitute for the 161CMQ045. Both components are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical ratings, thermal operating range, and mechanical package specifications. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications subject to environmental and hazardous substance restrictions.

The 160CMQ045 exhibits a lower forward voltage drop (860 mV vs. 880 mV at 160 A), which represents an improvement in thermal efficiency and power dissipation characteristics. This parameter difference does not compromise functional compatibility and may provide marginal performance benefits in power conversion applications.

Both components are classified as obsolete. Component selection should prioritize availability verification through authorized distributors prior to design finalization or production commitment.

Frequently Asked Questions (FAQ)

Q: Can the 160CMQ045 be used as a direct replacement for the 161CMQ045?

A: Yes. The 160CMQ045 meets all specified electrical parameters, thermal ratings, and mechanical package requirements. Both components are Schottky diodes rated for 45 V and 160 A with identical reverse leakage characteristics and operating temperature ranges. The TO-249AA chassis mount package is identical between both parts.

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

A: The 160CMQ045 exhibits a forward voltage of 860 mV at 160 A, compared to 880 mV for the 161CMQ045. This 20 mV difference represents lower power dissipation in the substitute part and does not affect circuit functionality or compatibility. Both values are within acceptable operating parameters for Schottky rectifier applications.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the 161CMQ045 and 160CMQ045 are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions applicable to electronic components.

Q: What is the moisture sensitivity level for these components?

A: Both parts carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. These components do not require special moisture control during storage, handling, or assembly.

Q: Are there any package or mounting differences between these parts?

A: No. Both components use the TO-249AA package with chassis mount configuration. Mechanical compatibility is complete, and no PCB layout or thermal management modifications are required when substituting the 160CMQ045 for the 161CMQ045.

Q: Why are both parts classified as obsolete?

A: Both the 161CMQ045 and 160CMQ045 are obsolete products. Availability is limited to existing inventory held by authorized distributors. Inventory verification is required before committing to production use.