CMSH3-60M BK PBFREE Equivalent & Substitute Parts

Part Overview

The CMSH3-60M BK PBFREE is a Schottky rectifier diode manufactured by Central Semiconductor Corp, rated for 60V DC reverse voltage and 3A average rectified current in a surface mount SMB (DO-214AA) package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). The part is used in power conversion circuits, rectification applications, and switching power supplies where fast recovery Schottky diodes are required. Equivalent and substitute parts are identified based on matching electrical parameters: 60V reverse voltage rating, fast recovery characteristics (≤500ns), SMB package compatibility, and compatible current ratings that satisfy application requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 60 V
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Operating Temperature - Junction	-65°C ~ 150°C	°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the CMSH3-60M BK PBFREE are grouped based on the following substitution criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 60V (exact match required)
Technology: Schottky (exact match required)
Mounting Type: Surface Mount (exact match required)
Package / Case: DO-214AA, SMB (exact match required)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)
Current - Average Rectified (Io): 1A, 2A, or 3A (equal or higher rating acceptable)

Grouping Logic:

Group 1 - Direct Current Rating Match (3A @ 60V SMB): Parts with identical 3A current rating, 60V voltage rating, and SMB package. These provide one-to-one functional replacement without derating considerations.

Group 2 - Lower Current Rating (2A @ 60V SMB): Parts rated for 2A at 60V in SMB package. These are suitable for applications where the circuit current demand does not exceed 2A, providing cost or availability alternatives.

Group 3 - Lower Current Rating (1A @ 60V SMB): Parts rated for 1A at 60V in SMB package. These are suitable only for applications with maximum circuit current of 1A or less.

Group 4 - Package Variant (2A @ 60V SMA): Parts with 2A rating at 60V but in SMA (DO-214AC) package instead of SMB. These require PCB layout modification due to different package footprint.

All substitute parts maintain the 60V reverse voltage specification, fast recovery speed characteristic, and RoHS3 compliance status of the original part.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Speed	Ir @ Vr	Package	Temp Range	RoHS
CMSH3-60M BK PBFREE	Central Semiconductor Corp	60V	3A	700 mV @ 3A	≤500ns	500 µA @ 60V	DO-214AA, SMB	-65°C ~ 150°C	ROHS3
B160BQ-13-F	Diodes Incorporated	60V	1A	700 mV @ 1A	≤500ns	500 µA @ 60V	DO-214AA, SMB	-65°C ~ 150°C	ROHS3
B260-13-F	Diodes Incorporated	60V	2A	700 mV @ 2A	≤500ns	500 µA @ 60V	DO-214AA, SMB	-65°C ~ 150°C	ROHS3
B260A-13-F	Diodes Incorporated	60V	2A	700 mV @ 2A	≤500ns	500 µA @ 60V	DO-214AC, SMA	-65°C ~ 150°C	ROHS3
B260Q-13-F	Diodes Incorporated	60V	2A	700 mV @ 2A	≤500ns	500 µA @ 60V	DO-214AA, SMB	-65°C ~ 150°C	ROHS3
B360B-E3/52T	Vishay General Semiconductor - Diodes Division	60V	3A	660 mV @ 3A	≤500ns	100 µA @ 60V	DO-214AA, SMB	-55°C ~ 150°C	ROHS3
B360B-E3/5BT	Vishay General Semiconductor - Diodes Division	60V	3A	660 mV @ 3A	≤500ns	100 µA @ 60V	DO-214AA, SMB	-55°C ~ 150°C	ROHS3
SS26-E3/52T	Vishay General Semiconductor - Diodes Division	60V	2A	700 mV @ 2A	≤500ns	400 µA @ 60V	DO-214AA, SMB	-65°C ~ 125°C	ROHS3
SS26-E3/5BT	Vishay General Semiconductor - Diodes Division	60V	2A	700 mV @ 2A	≤500ns	400 µA @ 60V	DO-214AA, SMB	-65°C ~ 125°C	ROHS3
STPS160U	STMicroelectronics	60V	1A	670 mV @ 1A	≤500ns	4 µA @ 60V	DO-214AA, SMB	-40°C ~ 150°C	ROHS3
STPS160UY	STMicroelectronics	60V	1A	670 mV @ 1A	≤500ns	4 µA @ 60V	DO-214AA, SMB	-40°C ~ 150°C	ROHS3

Engineering Selection Recommendations

Direct Replacement (3A @ 60V SMB):

The B360B-E3/52T and B360B-E3/5BT (Vishay General Semiconductor - Diodes Division) are direct functional replacements for the CMSH3-60M BK PBFREE. Both parts maintain the 60V reverse voltage rating, 3A current rating, SMB package, and fast recovery speed specification. The B360B series exhibits lower forward voltage (660 mV @ 3A versus 700 mV @ 3A) and significantly lower reverse leakage current (100 µA @ 60V versus 500 µA @ 60V), resulting in improved thermal performance and reduced power dissipation. Both variants are RoHS3 compliant. The primary difference between B360B-E3/52T and B360B-E3/5BT is packaging format: Cut Tape & Digi-Reel® versus Tape & Reel (TR). Operating temperature range is -55°C ~ 150°C, which is narrower at the lower end compared to the original part (-65°C ~ 150°C).

Current-Reduced Alternatives (2A @ 60V SMB):

The B260-13-F, B260Q-13-F, SS26-E3/52T, and SS26-E3/5BT are suitable substitutes when application current requirements do not exceed 2A. All maintain 60V reverse voltage, SMB package, and fast recovery characteristics. B260-13-F and B260Q-13-F (Diodes Incorporated) provide identical forward voltage (700 mV @ 2A) and reverse leakage (500 µA @ 60V) to the original part. SS26-E3/52T and SS26-E3/5BT (Vishay) offer identical forward voltage but slightly higher reverse leakage (400 µA @ 60V). SS26 variants have a reduced upper operating temperature limit of 125°C compared to 150°C. B260Q-13-F carries AEC-Q101 automotive qualification.

Current-Reduced Alternatives (1A @ 60V SMB):

The B160BQ-13-F, STPS160U, and STPS160UY are suitable only for applications with maximum circuit current of 1A. All maintain 60V reverse voltage, SMB package, and fast recovery characteristics. B160BQ-13-F (Diodes Incorporated) provides forward voltage of 700 mV @ 1A and carries AEC-Q101 automotive qualification. STPS160U and STPS160UY (STMicroelectronics) offer lower forward voltage (670 mV @ 1A) and significantly lower reverse leakage (4 µA @ 60V). STPS160UY carries AEC-Q101 automotive qualification and has operating temperature range of -40°C ~ 150°C.

Package Variant (2A @ 60V SMA):

The B260A-13-F (Diodes Incorporated) is electrically equivalent to B260-13-F but uses SMA (DO-214AC) package instead of SMB (DO-214AA). This part requires PCB layout modification due to different package footprint and is suitable only when application current does not exceed 2A.

All substitute parts are RoHS3 compliant and maintain unlimited moisture sensitivity level (MSL 1).

Frequently Asked Questions (FAQ)

Q1: Can I use a 2A-rated diode (B260-13-F or SS26-E3/52T) as a direct replacement for the 3A-rated CMSH3-60M BK PBFREE?

A: No. The CMSH3-60M BK PBFREE is rated for 3A average rectified current. Using a 2A-rated substitute in an application requiring 3A operation will cause the diode to operate beyond its rated current, resulting in excessive heat generation, reduced component lifetime, and potential circuit failure. A 2A-rated substitute is only acceptable if the actual circuit current demand is confirmed to be 2A or less.

Q2: What is the difference between B260Q-13-F and B260-13-F?

A: Both parts are manufactured by Diodes Incorporated and are electrically identical 60V, 2A Schottky diodes in SMB package with identical electrical parameters. The primary difference is packaging format: B260-13-F is supplied in Cut Tape (CT) & Digi-Reel® format, while B260Q-13-F is supplied in Tape & Reel (TR) format. Additionally, B260Q-13-F carries AEC-Q101 automotive qualification. Selection depends on procurement requirements and application qualification needs.

Q3: Why do the B360B-E3/52T and B360B-E3/5BT show lower forward voltage (660 mV @ 3A) compared to the original CMSH3-60M BK PBFREE (700 mV @ 3A)?

A: Forward voltage variation is a normal characteristic difference between different manufacturers' Schottky diode designs. The lower forward voltage of the B360B series results in reduced power dissipation and improved thermal performance. This is a beneficial characteristic for direct replacement applications. The difference of 40 mV at 3A represents approximately 0.12W less power dissipation in typical applications.

Q4: Can I substitute CMSH3-60M BK PBFREE with STPS160UY in a 3A application?

A: No. STPS160UY is rated for maximum 1A average rectified current. Using this part in a 3A application will cause immediate component failure due to excessive current. STPS160UY is only suitable for applications with maximum circuit current of 1A or less.

Q5: What is the significance of the operating temperature range difference between CMSH3-60M BK PBFREE (-65°C ~ 150°C) and B360B-E3/52T (-55°C ~ 150°C)?

A: The CMSH3-60M BK PBFREE supports operation down to -65°C junction temperature, while B360B-E3/52T supports operation down to -55°C. If the application requires operation below -55°C, the B360B series is not suitable. For applications with minimum operating temperature above -55°C, this difference is not a limiting factor.

Q6: Why is the reverse leakage current specification different between substitute parts?

A: Reverse leakage current is a manufacturing characteristic that varies between different semiconductor manufacturers and process technologies. The CMSH3-60M BK PBFREE specifies 500 µA @ 60V, while B360B series specifies 100 µA @ 60V, and STPS160 series specifies 4 µA @ 60V. Lower reverse leakage current indicates better diode quality and lower power dissipation in reverse bias conditions. All values are within acceptable ranges for Schottky diode applications.

Q7: Can I use B260A-13-F (SMA package) as a substitute for CMSH3-60M BK PBFREE (SMB package)?

A: B260A-13-F is electrically equivalent to the 2A-rated alternatives but uses SMA (DO-214AC) package instead of SMB (DO-214AA). Direct PCB substitution is not possible without layout modification because the package footprints are different. Additionally, B260A-13-F is only suitable for applications with maximum current of 2A, not 3A. Use of this part requires both PCB redesign and confirmation that application current does not exceed 2A.

Q8: What does "Fast Recovery ≤ 500ns, > 200mA (Io)" mean?

A: This specification indicates that the diode has a reverse recovery time of 500 nanoseconds or less when switching from forward conduction to reverse bias at currents greater than 200mA. This fast recovery characteristic is essential for switching power supply applications and high-frequency rectification circuits. All substitute parts listed maintain this specification.

Q9: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are RoHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), matching the compliance status of the original CMSH3-60M BK PBFREE.

Q10: Which substitute part offers the best thermal performance as a direct 3A replacement?

A: Both B360B-E3/52T and B360B-E3/5BT offer superior thermal performance compared to CMSH3-60M BK PBFREE due to lower forward voltage (660 mV @ 3A versus 700 mV @ 3A) and significantly lower reverse leakage current (100 µA @ 60V versus 500 µA @ 60V). The choice between these two variants depends on packaging format requirements: B360B-E3/52T for Cut Tape & Digi-Reel® format or B360B-E3/5BT for Tape & Reel (TR) format.

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