CMPSH-3C TR Equivalent & Substitute Parts

Part Overview

The CMPSH-3C TR is a Schottky diode array manufactured by Central Semiconductor Corp, configured as 1 pair common cathode in SOT-23 surface mount package. This component is rated for 30 V DC reverse voltage with 100 mA average rectified current per diode and operates across a junction temperature range of -65°C to 150°C. The part is currently in active product status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the original CMPSH-3C TR becomes unavailable due to supply constraints, end-of-life status, or when design requirements permit higher current ratings or enhanced performance characteristics while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io) (per Diode)	100	mA
Voltage - Forward (Vf) (Max) @ If	1	V @ 100 mA
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	—
Current - Reverse Leakage @ Vr	500	nA @ 25 V
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the CMPSH-3C TR is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Diode Configuration: Must be 1 Pair Common Cathode
Technology: Must be Schottky
Voltage - DC Reverse (Vr) (Max): Must be ≥ 30 V
Package / Case: Must be TO-236-3, SC-59, SOT-23-3 (identical physical footprint)
Mounting Type: Must be Surface Mount
RoHS Status: Must be ROHS3 Compliant
Moisture Sensitivity Level: Must be MSL 1

Allowable Parameter Variations:

Current - Average Rectified (Io): Substitute parts may have ≥ 100 mA rating (higher current capability is acceptable)
Voltage - Forward (Vf): Substitute parts may have ≤ 1 V @ 100 mA (lower forward voltage is acceptable)
Current - Reverse Leakage: Substitute parts may have higher leakage within acceptable limits
Operating Temperature - Junction: Substitute parts may have different maximum ratings; minimum operating temperature may vary

All identified substitute parts meet these criteria and are electrically and mechanically compatible with the CMPSH-3C TR in applications where the original part is no longer available or where enhanced current handling is beneficial.

Parameter Comparison

Parameter	CMPSH-3C TR	BAT5405E6327HTSA1	BAT54C-E3-08	BAT54C-E3-18	BAT54C-HE3-08	BAT54C-HE3-18	BAT54CLT1G	BAT54CLT3G	BAT54CTA
Manufacturer	Central Semiconductor Corp	Infineon Technologies	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	onsemi	onsemi	Diodes Incorporated
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	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	30 V	30 V	30 V	30 V	30 V	30 V
Current - Average Rectified (Io) (per Diode)	100 mA	200 mA (DC)	200 mA (DC)	200 mA (DC)	200 mA (DC)	200 mA (DC)	200 mA (DC)	200 mA (DC)	200 mA (DC)
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA	1 V @ 100 mA
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed
Reverse Recovery Time (trr)	—	5 ns	5 ns	5 ns	5 ns	5 ns	5 ns	5 ns	5 ns
Current - Reverse Leakage @ Vr	500 nA @ 25 V	2 µA @ 25 V	2 µA @ 25 V	2 µA @ 25 V	2 µA @ 25 V	2 µA @ 25 V	2 µA @ 25 V	2 µA @ 25 V	4 µA @ 25 V
Operating Temperature - Junction	-65°C to 150°C	150°C (Max)	125°C (Max)	125°C (Max)	125°C (Max)	125°C (Max)	-55°C to 125°C	-55°C to 125°C	125°C (Max)
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Last Time Buy	Last Time Buy	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are electrically and mechanically compatible with the CMPSH-3C TR based on matching diode configuration, Schottky technology, 30 V reverse voltage rating, SOT-23-3 package, and RoHS3 compliance.

Active Product Status Parts (Recommended for New Designs):

BAT5405E6327HTSA1 (Infineon Technologies): Active status with 200 mA current rating and 150°C maximum junction temperature, matching the original part's upper temperature limit.
BAT54C-E3-08 (Vishay General Semiconductor): Active status with 200 mA current rating.
BAT54C-E3-18 (Vishay General Semiconductor): Active status with 200 mA current rating.
BAT54CLT1G (onsemi): Active status with 200 mA current rating and -55°C to 125°C operating range.
BAT54CLT3G (onsemi): Active status with 200 mA current rating and -55°C to 125°C operating range.
BAT54CTA (Diodes Incorporated): Active status with 200 mA current rating and forward voltage matching the original specification at 1 V @ 100 mA.

Last Time Buy Status Parts (Suitable for Replacement Only):

BAT54C-HE3-08 (Vishay General Semiconductor): Last Time Buy status with AEC-Q101 automotive qualification and 200 mA current rating.
BAT54C-HE3-18 (Vishay General Semiconductor): Last Time Buy status with AEC-Q101 automotive qualification and 200 mA current rating.

For applications requiring automotive-grade components with AEC-Q101 qualification, BAT54C-HE3-08 and BAT54C-HE3-18 are available; however, their Last Time Buy status indicates limited future availability. For new designs and long-term supply assurance, selection from the active product status group is recommended.

Frequently Asked Questions (FAQ)

Q: Can BAT54C series parts directly replace the CMPSH-3C TR?

A: Yes. All BAT54C variants listed are direct replacements. They share identical diode configuration (1 pair common cathode), Schottky technology, 30 V reverse voltage rating, SOT-23-3 package footprint, and RoHS3 compliance. Physical and electrical compatibility is confirmed.

Q: What is the primary difference between the CMPSH-3C TR and its substitutes?

A: The main difference is current rating. The CMPSH-3C TR is rated for 100 mA average rectified current per diode, while all listed substitutes are rated for 200 mA. This represents a 2× increase in current handling capability. All substitutes are backward compatible for applications operating at or below 100 mA.

Q: Are there temperature range considerations when substituting?

A: The CMPSH-3C TR operates from -65°C to 150°C junction temperature. Most substitutes have maximum ratings of 125°C or 150°C. For applications requiring operation below -55°C, BAT54CLT1G and BAT54CLT3G (onsemi) specify -55°C minimum. For applications requiring the full -65°C lower limit, BAT5405E6327HTSA1 (Infineon) with 150°C maximum is the closest match.

Q: What does "Last Time Buy" status mean for BAT54C-HE3-08 and BAT54C-HE3-18?

A: Last Time Buy status indicates these parts are being discontinued. Existing inventory is available for purchase, but no new production is planned. These parts are suitable for replacement applications but not recommended for new product designs requiring long-term component availability.

Q: Is the forward voltage difference significant?

A: Most substitutes specify 800 mV forward voltage @ 100 mA, compared to 1 V for the CMPSH-3C TR. This 200 mV reduction represents improved efficiency and lower power dissipation. BAT54CTA (Diodes Incorporated) matches the original 1 V specification. The difference is not significant for most applications but should be verified in power-sensitive designs.

Q: Do all substitutes have the same reverse leakage characteristics?

A: No. The CMPSH-3C TR specifies 500 nA @ 25 V reverse leakage. Most substitutes specify 2 µA @ 25 V (4× higher), and BAT54CTA specifies 4 µA @ 25 V (8× higher). For applications with strict leakage requirements, this parameter should be evaluated against circuit specifications.

Q: Are automotive-qualified versions available?

A: Yes. BAT54C-HE3-08 and BAT54C-HE3-18 carry AEC-Q101 automotive qualification. These parts are suitable for automotive applications but are in Last Time Buy status. For new automotive designs, consult with manufacturers for current automotive-qualified alternatives.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in multiple packaging formats: Cut Tape (CT), Tape & Reel (TR), and Cut Tape & Digi-Reel combinations. All maintain the same SOT-23-3 component package. Selection of packaging format depends on assembly volume and handling requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message