160CMQ045 Equivalent & Substitute Parts

Part Overview

The 160CMQ045 is a Schottky diode rated for 45 V DC reverse voltage and 160 A average rectified current in a TO-249AA chassis mount package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The part is ROHS3 compliant and carries unlimited moisture sensitivity level classification.

Substiute Parts

160CMQ045

Vishay General Semiconductor - Diodes DivisionIn Stock: 87016160CMQ045 Datasheet

Current PartRFQ

160CMQ045

Vishay General Semiconductor - Diodes DivisionIn Stock: 87016160CMQ045 Datasheet

MFR RecommendedRFQ

161CMQ045

Vishay General Semiconductor - Diodes DivisionIn Stock: 2440161CMQ045 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 160CMQ045 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 45 V
• Current - Average Rectified (Io): 160 A per diode
• Package / Case: TO-249AA
• Mounting Type: Chassis Mount
• Technology: Schottky
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Within component design tolerance
• Current - Reverse Leakage @ Vr: Within component design tolerance
• Diode Configuration: Single diode or diode array configurations with equivalent per-diode ratings

The 161CMQ045 qualifies as a substitute part. Although configured as a 1 Pair Common Cathode diode array, each diode element maintains the required 45 V reverse voltage and 160 A current rating per diode, matching the electrical performance envelope of the single-diode 160CMQ045.

Parameter Comparison

Engineering Selection Recommendations

Both the 160CMQ045 and 161CMQ045 are classified as obsolete products. Selection between these parts is based on circuit configuration requirements and application topology.

160CMQ045 Selection Criteria:

• Single diode applications requiring 45 V / 160 A Schottky rectification
• Designs with point-of-load rectification or single-phase applications
• Circuits where individual diode control is required

161CMQ045 Selection Criteria:

• Applications utilizing common cathode diode pair configurations
• Bridge rectifier topologies or dual-diode switching applications
• Designs where matched diode pairs provide performance advantages

Both parts maintain identical compliance certifications: ROHS3 compliant, REACH unaffected, and unlimited moisture sensitivity level. Forward voltage differential (20 mV maximum at 160 A) is within typical component tolerance and does not preclude substitution in thermal or efficiency-critical applications without circuit re-evaluation.

Frequently Asked Questions (FAQ)

Q: Can the 161CMQ045 directly replace the 160CMQ045 in all applications?

A: The 161CMQ045 is electrically equivalent on a per-diode basis, matching the 45 V reverse voltage and 160 A current rating. However, the 161CMQ045 is configured as a 1 Pair Common Cathode diode array. Direct substitution is valid only in applications where the diode pair configuration is compatible with the circuit topology. Single-diode applications may require circuit redesign to utilize the array configuration.

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

A: The 160CMQ045 specifies 860 mV maximum forward voltage at 160 A, while the 161CMQ045 specifies 880 mV at the same current. This 20 mV difference falls within normal component manufacturing tolerance for Schottky diodes and does not constitute a substitution barrier. Power dissipation impact is negligible in most applications.

Q: Are both parts available for new procurement?

A: Both the 160CMQ045 and 161CMQ045 are classified as obsolete. Procurement availability is limited to existing inventory. Current inventory levels are 86,966 pieces for the 160CMQ045 and 2,400 pieces for the 161CMQ045 as of the data provided.

Q: Do these parts require different thermal management approaches?

A: Both parts are rated for identical reverse voltage (45 V), current (160 A), and reverse leakage (5 mA @ 45 V) specifications. Thermal management requirements are equivalent. The forward voltage differential of 20 mV produces negligible additional heat generation and does not alter thermal design calculations.

Q: What is the impact of the TO-249AA package on substitution?

A: The TO-249AA chassis mount package is identical for both parts. Mechanical mounting, thermal interface, and electrical connection methods are interchangeable. No package-related substitution constraints exist.

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

A: Both parts carry identical compliance certifications: ROHS3 compliant, REACH unaffected, EAR99 export classification, and unlimited moisture sensitivity level (MSL 1). No regulatory or compliance barriers to substitution exist.