SRF2040 Equivalent & Substitute Parts

Part Overview

The SRF2040 is a Schottky diode array in a 1 Pair Common Cathode configuration, manufactured by Taiwan Semiconductor Corporation. This component is rated for 40 V DC reverse voltage with 20 A average rectified current per diode and features fast recovery characteristics. The device is housed in a TO-220-3 Full Pack with isolated tab through-hole package. The SRF2040 maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io) (per Diode)	20	A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 10 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Through Hole	—
Package / Case	TO-220-3 Full Pack, Isolated Tab	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SRF2040 is based on strict equivalence of the following critical parameters:

Diode Configuration: 1 Pair Common Cathode topology must be maintained
Technology: Schottky diode technology required
Voltage Rating: 40 V DC reverse voltage (Vr) maximum
Current Rating: 20 A average rectified current per diode (Io)
Forward Voltage: 550 mV maximum at 10 A forward current
Speed Characteristic: Fast Recovery ≤ 500ns with > 200mA (Io)
Package: TO-220-3 Full Pack through-hole mounting with isolated tab
Compliance: ROHS3 compliance and REACH Unaffected status

The SB2040FCT_T0_00001 manufactured by Panjit International Inc. satisfies all substitution criteria through identical electrical specifications and mechanical compatibility.

Parameter Comparison

Parameter	SRF2040 (Taiwan Semiconductor)	SB2040FCT_T0_00001 (Panjit International)	Compatibility
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	Equivalent
Technology	Schottky	Schottky	Equivalent
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	Equivalent
Current - Average Rectified (Io) (per Diode)	20 A	20 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	550 mV @ 10 A	550 mV @ 10 A	Equivalent
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Current - Reverse Leakage @ Vr	500 µA @ 40 V	200 µA @ 40 V	SB2040FCT_T0_00001 Superior
Operating Temperature - Junction	-55°C ~ 125°C	-55°C ~ 150°C	SB2040FCT_T0_00001 Extended Range
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

Both the SRF2040 and SB2040FCT_T0_00001 are Active product status components with full ROHS3 compliance and REACH Unaffected regulatory status. The SB2040FCT_T0_00001 demonstrates superior performance characteristics in reverse leakage current (200 µA versus 500 µA at 40 V) and extended operating temperature range (-55°C to 150°C versus -55°C to 125°C). Both components meet identical electrical and mechanical substitution requirements for TO-220-3 through-hole Schottky diode array applications rated at 40 V and 20 A. Selection between these parts is determined by availability, supply chain requirements, and application-specific thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the SB2040FCT_T0_00001 be used as a direct replacement for the SRF2040 in existing designs?

A: Yes. The SB2040FCT_T0_00001 is a parametric equivalent with identical voltage rating (40 V), current rating (20 A per diode), forward voltage (550 mV @ 10 A), and package configuration (TO-220-3 through-hole). Both components feature 1 Pair Common Cathode Schottky diode arrays with fast recovery characteristics.

Q: What are the key differences between these substitute parts?

A: The SB2040FCT_T0_00001 exhibits lower reverse leakage current (200 µA versus 500 µA at 40 V) and an extended maximum junction operating temperature (150°C versus 125°C). These represent performance enhancements rather than deviations from the SRF2040 specification.

Q: Are both parts available in the same package configuration?

A: Both components use TO-220-3 Full Pack through-hole packages. The SRF2040 specifies an isolated tab feature, while the SB2040FCT_T0_00001 package designation does not explicitly reference tab isolation. Mechanical compatibility for PCB mounting and thermal management is maintained across both parts.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the SRF2040 and SB2040FCT_T0_00001 are ROHS3 compliant and REACH Unaffected, meeting identical environmental and regulatory requirements for electronic component applications.

Q: Which part should be selected for high-temperature applications?

A: The SB2040FCT_T0_00001 supports junction temperatures up to 150°C, compared to 125°C for the SRF2040. For applications requiring sustained operation above 125°C, the SB2040FCT_T0_00001 is the appropriate selection.

Q: Are there any electrical performance trade-offs when substituting these parts?

A: No trade-offs exist. The SB2040FCT_T0_00001 maintains all critical electrical parameters (voltage, current, forward voltage, recovery speed) while providing superior reverse leakage characteristics and thermal range.

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