CMHD4150 BK Equivalent & Substitute Parts

Part Overview

The CMHD4150 BK is a general-purpose rectifier diode rated for 50 V DC reverse voltage and 250 mA average rectified current in a surface mount SOD-123 package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design requirements and procurement continuity. Substitute parts must maintain electrical compatibility within the specified voltage and current parameters while accommodating the SOD-123 surface mount package format.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	250	mA
Voltage - Forward (Vf) (Max) @ If	1	V @ 200 mA
Reverse Recovery Time (trr)	4	ns
Current - Reverse Leakage @ Vr	100	nA @ 50 V
Capacitance @ Vr, F	4	pF @ 0V, 1MHz
Package / Case	SOD-123	—
Operating Temperature - Junction	-65 to 150	°C
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Compatibility Parameters:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 50 V
Current - Average Rectified (Io): Must equal or exceed 250 mA
Package / Case: Must be SOD-123 surface mount
Operating Temperature Range: Must accommodate -65°C to 150°C junction temperature or higher maximum

Secondary Alignment Parameters:

Voltage - Forward (Vf) (Max) @ If: Preferred alignment at 1 V @ 200 mA or lower
Reverse Recovery Time (trr): Preferred alignment at 4 ns or faster
Current - Reverse Leakage @ Vr: Preferred alignment at 100 nA @ 50 V or lower

Two substitute parts meet the mandatory criteria with variations in secondary parameters:

1N4150W-E3-08 (Vishay): Meets voltage and package requirements. Current rating of 200 mA is below the 250 mA specification; forward voltage and reverse leakage align with the original part. Active product status with ROHS3 compliance.

SBR0560S1-7 (Diodes Incorporated): Exceeds voltage (60 V) and current (500 mA) specifications. Utilizes Super Barrier technology with lower forward voltage (500 mV @ 500 mA). Reverse leakage is higher at 100 µA @ 60 V. Active product status with ROHS3 compliance.

Parameter Comparison

Parameter	CMHD4150 BK	1N4150W-E3-08	SBR0560S1-7
Manufacturer	Central Semiconductor Corp	Vishay General Semiconductor - Diodes Division	Diodes Incorporated
Product Status	Obsolete	Active	Active
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	60 V
Current - Average Rectified (Io)	250 mA	200 mA	500 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 200 mA	1 V @ 200 mA	500 mV @ 500 mA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Small Signal ≤ 200mA, Any Speed	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	4 ns	4 ns	4 ns
Current - Reverse Leakage @ Vr	100 nA @ 50 V	100 nA @ 50 V	100 µA @ 60 V
Capacitance @ Vr, F	4 pF @ 0V, 1MHz	2.5 pF @ 0V, 1MHz	Not specified
Package / Case	SOD-123	SOD-123	SOD-123
Operating Temperature - Junction	-65°C to 150°C	150°C (Max)	-65°C to 150°C
RoHS Status	Request inventory verification	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

1N4150W-E3-08 Selection Criteria:

This substitute is appropriate for applications where the 250 mA current requirement can be reduced to 200 mA without circuit performance degradation. The part maintains identical voltage and forward voltage characteristics to the original CMHD4150 BK. Active product status ensures long-term availability and supply chain stability. ROHS3 compliance satisfies environmental regulatory requirements. The lower capacitance (2.5 pF versus 4 pF) may provide marginal benefits in high-frequency switching applications.

SBR0560S1-7 Selection Criteria:

This substitute is appropriate for applications requiring higher current capacity (500 mA) or higher reverse voltage rating (60 V) than the original specification. The Super Barrier technology provides lower forward voltage drop, reducing power dissipation in high-current circuits. Fast recovery speed classification matches the original part. Active product status and ROHS3 compliance ensure regulatory alignment. The elevated reverse leakage current (100 µA @ 60 V versus 100 nA @ 50 V) must be evaluated in low-leakage circuit applications.

Both substitutes are available in active production with ROHS3 compliance and REACH unaffected status, supporting long-term design continuity.

Frequently Asked Questions (FAQ)

Q: Can 1N4150W-E3-08 directly replace CMHD4150 BK in all applications?

A: The 1N4150W-E3-08 is suitable for applications operating at or below 200 mA average rectified current. If the circuit design requires the full 250 mA rating of the original part, this substitute may not be appropriate without circuit redesign or thermal management modifications.

Q: What is the primary advantage of SBR0560S1-7 over the original CMHD4150 BK?

A: The SBR0560S1-7 provides higher current capacity (500 mA versus 250 mA) and higher reverse voltage rating (60 V versus 50 V). The Super Barrier technology delivers lower forward voltage drop (500 mV @ 500 mA), reducing power dissipation in applications with sustained high current operation.

Q: Are both substitutes available in the same SOD-123 package?

A: Yes. Both 1N4150W-E3-08 and SBR0560S1-7 are supplied in SOD-123 surface mount packages, maintaining mechanical and thermal interface compatibility with the original CMHD4150 BK footprint.

Q: What is the significance of the reverse leakage current difference in SBR0560S1-7?

A: The SBR0560S1-7 exhibits reverse leakage of 100 µA @ 60 V compared to 100 nA @ 50 V in the original part. This 1000-fold increase may impact applications with stringent leakage requirements, such as precision analog circuits or high-impedance signal paths. Circuit evaluation is necessary for such applications.

Q: Do both substitutes meet RoHS and REACH compliance requirements?

A: Yes. Both 1N4150W-E3-08 and SBR0560S1-7 are ROHS3 compliant and REACH unaffected, satisfying environmental and regulatory requirements equivalent to or exceeding the original part specifications.

Q: What is the operating temperature range difference between the substitutes?

A: The 1N4150W-E3-08 specifies a maximum junction temperature of 150°C without a minimum temperature specification. The SBR0560S1-7 specifies -65°C to 150°C, matching the original CMHD4150 BK range. For applications requiring operation below 0°C, the SBR0560S1-7 is the appropriate selection.

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