SMD15PL-TP Equivalent & Substitute Parts

Part Overview

The SMD15PL-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 50V DC reverse voltage and 1A average rectified current in a surface mount SOD-123FL package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Organizations using this diode in active production or maintenance applications require qualified substitute components that maintain functional compatibility while offering improved availability and active product support.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500 µA @ 50 V	µA
Package / Case	SOD-123F	—
Operating Temperature - Junction	-55°C ~ 125°C	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SMD15PL-TP is determined by the following critical parameters:

Voltage Rating: The main part specifies 50V maximum DC reverse voltage. All substitute parts listed operate at 40V maximum reverse voltage, which is lower than the original specification. Substitution is valid only in applications where the actual reverse voltage stress does not exceed 40V.

Current Rating: All substitute parts maintain the 1A average rectified current specification, ensuring equivalent current-handling capability.

Package Type: All substitute parts use the SOD-123F or SOD-123FL package, providing mechanical and electrical compatibility with the original footprint.

Technology: All substitute parts are Schottky diodes with fast recovery characteristics (≤ 500ns), maintaining the switching performance class of the original component.

Temperature Range: The main part operates from -55°C to 125°C. Substitute parts MBR140ESFT1G and NRVB140ESFT1G extend the upper limit to 175°C, while MBR140SFT1G and MBR140SFT3G maintain the -55°C to 125°C range.

Product Status: The main part is "Not For New Designs." All substitute parts carry "Active" product status, ensuring ongoing manufacturer support and availability.

Parameter Comparison

Parameter	SMD15PL-TP	MBR140ESFT1G	MBR140SFT1G	MBR140SFT3G	NRVB140ESFT1G	PMEG4010EH,115
Manufacturer	Micro Commercial Co	onsemi	onsemi	onsemi	onsemi	Nexperia USA Inc.
Voltage - DC Reverse (Vr) (Max)	50 V	40 V	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 1 A	560 mV @ 1 A	550 mV @ 1 A	550 mV @ 1 A	560 mV @ 1 A	640 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 50 V	30 µA @ 40 V	500 µA @ 40 V	500 µA @ 40 V	30 µA @ 40 V	100 µA @ 40 V
Package / Case	SOD-123F	SOD-123F	SOD-123F	SOD-123F	SOD-123F	SOD-123F
Operating Temperature - Junction	-55°C ~ 125°C	-55°C ~ 175°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 175°C	Max 150°C
Product Status	Not For New Designs	Active	Active	Active	Active	Active
RoHS Status	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)

Engineering Selection Recommendations

Voltage Derating Consideration: All substitute parts operate at 40V maximum reverse voltage, compared to the original 50V specification. Selection of a substitute part requires verification that the actual reverse voltage stress in the application does not exceed 40V. This is a critical design constraint that must be evaluated before substitution.

Forward Voltage Characteristics: Substitute parts exhibit lower forward voltage drops (550–640 mV) compared to the original part (700 mV). This improvement reduces power dissipation and heat generation. Circuit designs that depend on specific forward voltage characteristics for biasing or reference functions must be re-evaluated.

Reverse Leakage Current: MBR140ESFT1G and NRVB140ESFT1G offer significantly lower reverse leakage (30 µA @ 40 V) compared to the original part (500 µA @ 50 V). MBR140SFT1G, MBR140SFT3G, and PMEG4010EH,115 maintain higher leakage levels. Applications sensitive to leakage current should prioritize the lower-leakage options.

Temperature Range: MBR140ESFT1G and NRVB140ESFT1G extend the maximum junction temperature to 175°C, providing enhanced thermal margin. NRVB140ESFT1G carries AEC-Q101 automotive qualification, suitable for automotive and high-reliability applications.

Product Availability and Support: All substitute parts carry "Active" product status with substantial inventory levels (12,300 to 100,300 pieces), ensuring long-term availability and manufacturer support compared to the obsolete SMD15PL-TP.

Packaging Variants: MBR140SFT1G is supplied in Cut Tape (CT) & Digi-Reel® packaging, while MBR140ESFT1G, MBR140SFT3G, and NRVB140ESFT1G are supplied in Tape & Reel (TR). PMEG4010EH,115 is supplied in Cut Tape (CT) & Digi-Reel®. Packaging selection depends on assembly equipment and procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the SMD15PL-TP be directly replaced with a 40V-rated substitute in a 50V application?

A: No. Direct substitution is valid only if the actual reverse voltage stress in the application does not exceed 40V. Applications designed for 50V operation require circuit re-evaluation or selection of alternative components with higher voltage ratings.

Q: What is the primary advantage of substituting to MBR140ESFT1G or NRVB140ESFT1G?

A: Both parts offer significantly lower reverse leakage current (30 µA @ 40 V versus 500 µA @ 50 V in the original), reduced forward voltage drop (560 mV versus 700 mV), and extended temperature range to 175°C. NRVB140ESFT1G additionally carries AEC-Q101 automotive qualification.

Q: Are all substitute parts mechanically compatible with the original SMD15PL-TP footprint?

A: Yes. All substitute parts use the SOD-123F or SOD-123FL package, which provides identical mechanical and electrical footprint compatibility. No PCB layout modifications are required.

Q: Which substitute part should be selected for automotive applications?

A: NRVB140ESFT1G is qualified to AEC-Q101 automotive standards and is the appropriate choice for automotive and high-reliability applications requiring formal qualification documentation.

Q: How do forward voltage characteristics differ among the substitute parts?

A: Forward voltage ranges from 550 mV (MBR140SFT1G, MBR140SFT3G) to 640 mV (PMEG4010EH,115) at 1A, compared to 700 mV in the original part. Applications using the diode in precision rectification or biasing circuits must account for these differences in circuit performance.

Q: What is the difference between MBR140SFT1G and MBR140SFT3G?

A: Both parts are electrically identical with 40V rating, 1A current, and identical electrical characteristics. The primary difference is packaging: MBR140SFT1G is supplied in Cut Tape (CT) & Digi-Reel®, while MBR140SFT3G is supplied in Tape & Reel (TR). Selection depends on assembly equipment compatibility.

Q: Is reverse leakage current a critical parameter for this application?

A: Reverse leakage significance depends on circuit function. In precision analog circuits, high-impedance applications, or low-power designs, leakage current is critical. MBR140ESFT1G and NRVB140ESFT1G with 30 µA leakage are preferred. In standard rectification applications, the higher leakage of MBR140SFT1G or MBR140SFT3G may be acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, meeting environmental and regulatory requirements equivalent to the original SMD15PL-TP.

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