Equivalent & Substitute Parts for 30CPQ050

Part Overview

The 30CPQ050 is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division, configured as a 1 Pair Common Cathode device rated for 50 V DC reverse voltage and 15 A average rectified current per diode. The device is packaged in TO-247-3 through-hole configuration and features fast recovery characteristics with a maximum forward voltage of 600 mV at 15 A.

The 30CPQ050 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Substitute devices must maintain functional compatibility through matching or exceeding critical electrical parameters while maintaining the same physical package and mounting configuration.

Key Parameters

Parameter	30CPQ050 Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io) (per Diode)	15	A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 15 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	800 µA @ 50 V	µA
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-247-3	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the 30CPQ050 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Diode Configuration: 1 Pair Common Cathode (must match exactly)
Technology: Schottky (must match exactly)
Package / Case: TO-247-3 (must match exactly)
Mounting Type: Through Hole (must match exactly)

Electrical Parameter Compatibility:

Voltage - DC Reverse (Vr) (Max): Substitute must equal or exceed 50 V
Current - Average Rectified (Io) (per Diode): Substitute must equal or exceed 15 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (must match)

Substitute parts are grouped based on whether they maintain the 50 V reverse voltage rating of the original device or operate at reduced voltage ratings. Parts with reduced voltage ratings (45 V) are suitable for applications where the system voltage does not exceed the substitute device rating. Parts with increased current ratings (20 A or 30 A) provide enhanced current handling capability and are direct functional upgrades.

Parameter Comparison

Parameter	30CPQ050	MBR3050PT	STPS3045CW	STPS3060CW	STPS30L45CW	STPS4045CWY	STPS60L45CW
Manufacturer	Vishay	Fairchild	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	45 V	60 V	45 V	45 V	45 V
Current - Average Rectified (Io) (per Diode)	15 A	20 A	15 A	15 A	15 A	20 A	30 A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 15 A	750 mV @ 20 A	570 mV @ 15 A	850 mV @ 15 A	550 mV @ 15 A	760 mV @ 20 A	550 mV @ 30 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	800 µA @ 50 V	5 mA @ 50 V	200 µA @ 45 V	150 µA @ 60 V	400 µA @ 45 V	200 µA @ 45 V	1.5 mA @ 45 V
Operating Temperature - Junction	-55 to 150°C	-65 to 150°C	Max 200°C	Max 150°C	Max 150°C	-40 to 175°C	Max 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute - Equivalent Voltage Rating:

MBR3050PT is the recommended substitute for direct replacement in applications requiring 50 V reverse voltage rating. This Fairchild Semiconductor device maintains the 50 V DC reverse voltage specification of the original 30CPQ050 while providing enhanced current capability at 20 A per diode. The MBR3050PT is active in production status and ROHS3 compliant, addressing the obsolescence of the original device. The device is available in bulk packaging with 1437 units in stock.

Alternative Substitutes - Reduced Voltage Rating:

STPS3045CW, STPS30L45CW, STPS4045CWY, and STPS60L45CW are suitable substitutes for applications where the system voltage does not exceed 45 V. These STMicroelectronics devices are all active in production status and ROHS3 compliant. Selection among these alternatives depends on current requirements:

STPS3045CW and STPS30L45CW: 15 A current rating (equivalent to original)
STPS4045CWY: 20 A current rating with automotive qualification (AEC-Q101) and extended temperature range (-40 to 175°C)
STPS60L45CW: 30 A current rating for applications requiring enhanced current handling

Higher Voltage Alternative:

STPS3060CW provides a 60 V reverse voltage rating, exceeding the original 30CPQ050 specification. This device is suitable for applications requiring voltage margin above the 50 V rating while maintaining 15 A current capability. The device is active in production status and ROHS3 compliant.

All substitute devices maintain the TO-247-3 package configuration, 1 Pair Common Cathode diode configuration, Schottky technology, and fast recovery speed characteristics of the original part.

Frequently Asked Questions (FAQ)

Q: Can STPS3045CW be used as a direct replacement for 30CPQ050?

A: STPS3045CW is functionally compatible with 30CPQ050 for applications where the system voltage does not exceed 45 V. Both devices share identical diode configuration (1 Pair Common Cathode), technology (Schottky), current rating (15 A), package (TO-247-3), and mounting type (Through Hole). The 45 V reverse voltage rating of STPS3045CW is lower than the original 50 V rating. Substitution is valid only when the application circuit voltage remains below 45 V.

Q: What is the difference between MBR3050PT and STPS3045CW?

A: MBR3050PT maintains the 50 V reverse voltage rating of the original 30CPQ050 and provides 20 A current capability. STPS3045CW operates at 45 V reverse voltage with 15 A current capability. MBR3050PT is manufactured by Fairchild Semiconductor, while STPS3045CW is manufactured by STMicroelectronics. Both devices are active in production and ROHS3 compliant. Selection depends on whether the application requires the full 50 V voltage rating and whether increased current capability is beneficial.

Q: Is STPS4045CWY suitable for automotive applications?

A: STPS4045CWY is qualified to AEC-Q101 automotive standard and carries automotive grade designation. The device operates at 45 V reverse voltage with 20 A current capability and features an extended operating temperature range of -40 to 175°C. This device is appropriate for automotive applications where the system voltage does not exceed 45 V and where automotive qualification is required.

Q: Can STPS60L45CW replace 30CPQ050 in high-current applications?

A: STPS60L45CW is compatible with 30CPQ050 in terms of package, configuration, and technology. However, the device operates at 45 V reverse voltage compared to the original 50 V rating. STPS60L45CW provides 30 A current capability, which exceeds the original 15 A rating. This device is suitable for applications requiring enhanced current handling where the system voltage does not exceed 45 V.

Q: What is the significance of the TO-247-3 package for substitution?

A: The TO-247-3 package is a through-hole configuration with three leads. All substitute devices listed maintain this identical package specification, ensuring mechanical and electrical compatibility with existing printed circuit board layouts and mounting hardware. Package compatibility is a mandatory requirement for direct substitution without circuit board redesign.

Q: Why is STPS3060CW listed as a substitute if it has a higher voltage rating?

A: STPS3060CW provides a 60 V reverse voltage rating, which exceeds the original 30CPQ050 specification of 50 V. This device is suitable for applications where additional voltage margin is beneficial or where the application circuit voltage may approach the 50 V limit. The higher voltage rating does not prevent substitution; it provides enhanced overvoltage protection. All other critical parameters (configuration, technology, current rating, package, mounting type) remain compatible.

Q: Are all substitute parts RoHS compliant?

A: All substitute devices listed are ROHS3 compliant. The original 30CPQ050 is RoHS non-compliant. Substitution with any of the listed devices addresses both obsolescence and regulatory compliance requirements for new production runs.

Q: What is the impact of forward voltage differences between substitute devices?

A: Forward voltage variations among substitute devices reflect differences in semiconductor design and manufacturing processes. STPS30L45CW and STPS60L45CW exhibit lower forward voltage (550 mV at rated current) compared to the original 30CPQ050 (600 mV at 15 A), resulting in reduced power dissipation. MBR3050PT and STPS4045CWY exhibit higher forward voltage (750 mV and 760 mV respectively at their rated currents). Forward voltage differences affect thermal performance and power efficiency but do not prevent functional substitution.

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