SK25-TP Schottky Diode Equivalent & Substitute Parts

Part Overview

The SK25-TP is a 50V, 2A Schottky rectifier diode manufactured by Micro Commercial Co in a DO-214AA (SMB) surface mount package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The SK25-TP serves as a fast recovery rectifier suitable for applications requiring low forward voltage drop and rapid switching characteristics in surface mount configurations.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 50 V
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Operating Temperature - Junction	-55°C ~ 125°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SK25-TP is determined by strict electrical and mechanical parameter matching within the Schottky diode rectifier category. The primary substitution criteria are:

Electrical Parameters (Must Match or Exceed):

Voltage - DC Reverse (Vr): Minimum 50 V
Current - Average Rectified (Io): Minimum 2 A
Forward voltage drop (Vf): Acceptable at 700 mV @ 2 A or lower
Reverse leakage current: Acceptable at 500 µA @ 50 V or lower
Speed classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters (Must Match):

Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB

Compliance Parameters:

RoHS3 Compliant
REACH Unaffected

Parts are grouped into two categories: Direct Equivalents (matching all electrical specifications at 50V, 2A) and Functional Alternatives (meeting core electrical requirements with voltage or current derating considerations).

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Reverse Leakage @ Vr	Speed	Package	Product Status	RoHS3
SK25-TP	Micro Commercial Co	50 V	2 A	700 mV @ 2 A	500 µA @ 50 V	Fast Recovery ≤ 500ns	DO-214AA, SMB	Obsolete	Yes
B250Q-13	Diodes Incorporated	50 V	2 A	700 mV @ 2 A	500 µA @ 50 V	Fast Recovery ≤ 500ns	DO-214AA, SMB	Active	Yes
B250-13-F	Diodes Incorporated	50 V	2 A	700 mV @ 2 A	500 µA @ 50 V	Fast Recovery ≤ 500ns	DO-214AA, SMB	Active	Yes
B250Q-13-F	Diodes Incorporated	50 V	2 A	700 mV @ 2 A	500 µA @ 50 V	Fast Recovery ≤ 500ns	DO-214AA, SMB	Active	Yes
B240Q-13-F	Diodes Incorporated	40 V	2 A	500 mV @ 2 A	500 µA @ 40 V	Fast Recovery ≤ 500ns	DO-214AA, SMB	Active	Yes
MBRS2040LT3G	onsemi	40 V	2 A	430 mV @ 2 A	800 µA @ 40 V	Fast Recovery ≤ 500ns	DO-214AA, SMB	Active	Yes
MBRS240LT3G	onsemi	40 V	2 A	430 mV @ 2 A	2 mA @ 40 V	Fast Recovery ≤ 500ns	DO-214AA, SMB	Active	Yes

Engineering Selection Recommendations

Direct Equivalents (50V, 2A Rating):

The parts B250Q-13, B250-13-F, and B250Q-13-F from Diodes Incorporated are direct electrical and mechanical equivalents to the SK25-TP. All three maintain the 50V reverse voltage rating, 2A average rectified current, 700 mV forward voltage drop at 2A, and identical fast recovery speed characteristics. These parts are in active production status, ensuring long-term availability and supply chain stability. B250Q-13-F and B250Q-13 carry AEC-Q101 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

Functional Alternatives (40V Rating):

The B240Q-13-F, MBRS2040LT3G, and MBRS240LT3G are functional alternatives suitable for applications where the reverse voltage requirement does not exceed 40V. These parts maintain the 2A current rating and fast recovery speed. B240Q-13-F offers improved forward voltage characteristics (500 mV @ 2A) and AEC-Q101 qualification. MBRS2040LT3G and MBRS240LT3G provide superior forward voltage performance (430 mV @ 2A) but differ in reverse leakage characteristics. Selection among these alternatives depends on specific circuit voltage requirements and thermal management considerations.

Compliance and Availability:

All substitute parts listed are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Inventory availability is confirmed for all active parts, with B250Q-13-F, B250-13-F, and B250Q-13 from Diodes Incorporated offering the highest stock levels (17,100 to 18,186 units) and immediate procurement capability.

Frequently Asked Questions (FAQ)

Q: Can B240Q-13-F be used as a direct replacement for SK25-TP?

A: B240Q-13-F is a functional alternative, not a direct replacement. It operates at 40V maximum reverse voltage compared to SK25-TP's 50V rating. Use B240Q-13-F only in applications where the circuit voltage does not exceed 40V. For circuits designed for 50V operation, use B250Q-13, B250-13-F, or B250Q-13-F instead.

Q: What is the difference between B250Q-13 and B250-13-F?

A: Both parts meet identical electrical specifications (50V, 2A, 700 mV Vf). B250-13-F does not carry AEC-Q101 automotive qualification, while B250Q-13-F does. For non-automotive applications, either part is acceptable. For automotive or mission-critical applications, B250Q-13-F is preferred.

Q: Are MBRS2040LT3G and MBRS240LT3G interchangeable?

A: Both parts share the same 40V, 2A electrical rating and fast recovery speed. However, MBRS240LT3G exhibits higher reverse leakage current (2 mA @ 40V) compared to MBRS2040LT3G (800 µA @ 40V). In low-leakage applications, MBRS2040LT3G is preferred. Both are suitable for 40V maximum circuit operation.

Q: Does the SK25-TP obsolete status affect substitute part selection?

A: Yes. The SK25-TP obsolete status necessitates transition to active production parts. B250Q-13, B250-13-F, and B250Q-13-F from Diodes Incorporated are recommended as primary replacements due to active production status, confirmed inventory availability, and identical electrical specifications. These parts ensure long-term supply chain continuity.

Q: Can I use a 40V rated diode in a 50V circuit?

A: No. Using a 40V rated diode (B240Q-13-F, MBRS2040LT3G, or MBRS240LT3G) in a circuit designed for 50V operation exceeds the component's voltage rating and creates reliability and safety risks. Use only 50V rated parts (B250Q-13, B250-13-F, or B250Q-13-F) for 50V applications.

Q: What is the significance of the SMB package designation?

A: SMB (Surface Mount Package) is the mechanical form factor designation for the DO-214AA package. All listed substitute parts use identical SMB packaging, ensuring mechanical compatibility with existing PCB layouts and assembly processes. No board redesign is required when substituting between these parts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (B250Q-13, B250-13-F, B250Q-13-F, B240Q-13-F, MBRS2040LT3G, and MBRS240LT3G) are RoHS3 compliant and REACH unaffected, meeting current environmental regulations for electronic component manufacturing and use.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message