MBRX120-TP Equivalent & Substitute Parts

Part Overview

The MBRX120-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 20V DC reverse voltage and 1A average rectified current in a surface mount SOD-123 package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical performance within the specified operating parameters while accommodating available packaging options.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Technology	Schottky	—
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—
Operating Temperature - Junction	-55°C ~ 125°C	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MBRX120-TP is determined by equivalence in the following critical parameters:

Voltage Rating: All substitute parts maintain 20V DC reverse voltage maximum
Current Rating: All substitute parts support 1A average rectified current
Technology: All substitute parts utilize Schottky rectifier technology
Speed Classification: All substitute parts meet fast recovery specifications (≤ 500ns, > 200mA)
Mounting Type: All substitute parts are surface mount configurations
Compliance: All substitute parts maintain ROHS3 compliance and REACH unaffected status

The identified substitute parts operate within the electrical envelope of the MBRX120-TP while offering active product status and improved availability. Package variations (SOD-123 vs. SOD-123F/SOD-123FL) represent mechanical compatibility considerations for PCB layout and assembly processes.

Parameter Comparison

Parameter	MBRX120-TP	SM5817PL-TP	PMEG2010EH,115
Manufacturer	Micro Commercial Co	Micro Commercial Co	Nexperia USA Inc.
Product Status	Obsolete	Active	Active
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V
Current - Average Rectified (Io)	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	450 mV @ 1 A	500 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	300 µA @ 20 V	100 µA @ 20 V	200 µA @ 20 V
Capacitance @ Vr, F	30 pF @ 4V, 1MHz	110 pF @ 4V, 1MHz	80 pF @ 1V, 1MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123	SOD-123F	SOD-123F
Operating Temperature - Junction	-55°C ~ 125°C	-65°C ~ 125°C	150°C (Max)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SM5817PL-TP is the primary direct substitute for MBRX120-TP applications. Both components are manufactured by Micro Commercial Co and share identical electrical ratings. The SM5817PL-TP offers improved reverse leakage characteristics (100 µA vs. 300 µA) and lower forward voltage drop (450 mV vs. 500 mV), resulting in reduced power dissipation. The extended operating temperature range (-65°C to 125°C vs. -55°C to 125°C) provides additional thermal margin. The SOD-123F package is mechanically compatible with SOD-123 footprints in most PCB designs. Active product status ensures long-term availability and supply chain continuity.

PMEG2010EH,115 is an alternative substitute manufactured by Nexperia USA Inc. This component maintains identical voltage and current ratings with equivalent forward voltage characteristics. The PMEG2010EH,115 includes automotive-grade qualification (AEC-Q100) and supports higher maximum junction temperature (150°C), making it suitable for applications requiring automotive compliance or elevated thermal environments. The SOD-123F package provides mechanical compatibility. Active product status supports procurement requirements.

Selection between SM5817PL-TP and PMEG2010EH,115 depends on application-specific requirements: SM5817PL-TP for general-purpose rectification with optimized leakage performance, and PMEG2010EH,115 for automotive or high-temperature applications requiring AEC-Q100 qualification.

Frequently Asked Questions (FAQ)

Q: Can SM5817PL-TP directly replace MBRX120-TP on existing PCBs?

A: Yes. Both components share identical electrical specifications (20V, 1A, Schottky technology). The SOD-123F package used by SM5817PL-TP is mechanically compatible with SOD-123 footprints. Verify PCB layout accommodates the slightly different package dimensions if required.

Q: What is the difference between SOD-123 and SOD-123F packages?

A: SOD-123F is a variant of the SOD-123 package with modified lead geometry. Both packages are surface mount configurations with compatible PCB footprints for most applications. Consult component datasheets for precise dimensional specifications if layout constraints exist.

Q: Does PMEG2010EH,115 require different circuit design considerations?

A: No. PMEG2010EH,115 maintains the same electrical ratings and operating characteristics as MBRX120-TP. The automotive-grade qualification and higher maximum junction temperature represent additional capabilities rather than design requirement changes.

Q: Why does SM5817PL-TP show lower reverse leakage current?

A: SM5817PL-TP exhibits 100 µA reverse leakage at 20V compared to 300 µA for MBRX120-TP. This represents improved device performance in the active substitute part and results in reduced power dissipation during reverse bias operation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both SM5817PL-TP and PMEG2010EH,115 maintain ROHS3 compliance and REACH unaffected status, matching the environmental compliance profile of MBRX120-TP.

Q: What is the significance of the -65°C lower operating temperature limit for SM5817PL-TP?

A: SM5817PL-TP supports operation down to -65°C compared to -55°C for MBRX120-TP. This extended range provides additional thermal margin for applications operating in cold environments or requiring broader temperature specifications.

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