Equivalent & Substitute Parts for 5819SMJ/TR13

Part Overview

The 5819SMJ/TR13 is a Schottky rectifier diode manufactured by Microchip Technology, rated for 40 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active product status and is RoHS non-compliant. Equivalent and substitute parts are identified based on matching or exceeding electrical performance parameters while maintaining compatible package form factors and mounting characteristics. Substitutes enable design flexibility, address supply chain availability, and accommodate alternative sourcing strategies when the primary part is unavailable.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	1 mA @ 40 V	mA
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitute parts for the 5819SMJ/TR13 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical electrical specifications (40 V reverse voltage, 1 A average rectified current, 550 mV forward voltage at 1 A, fast recovery speed) and are interchangeable at the circuit level. These parts differ only in packaging format (Tape & Reel versus Cut Tape) or manufacturer designation.

Similar Substitutes share the same reverse voltage rating (40 V) and package form factor (DO-214AA/SMB) but differ in one or more of the following parameters: average rectified current rating, forward voltage characteristics, reverse leakage current, or operating temperature range. These parts are suitable for applications where the circuit design permits higher current ratings or where performance variations fall within acceptable design margins.

Key substitution criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 40 V
Mounting Type: Surface Mount (required)
Package / Case: DO-214AA or SMB compatible
Technology: Schottky (required)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (required)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Tj (Operating) [°C]	Package	RoHS Status
5819SMJ/TR13	Microchip Technology	40	1	550 @ 1 A	1000 @ 40 V	-55 ~ 150	DO-214AA, SMB	Non-compliant
5819SMJE3/TR13	Microchip Technology	40	1	550 @ 1 A	1000 @ 40 V	-55 ~ 150	DO-214AA, SMB	ROHS3 Compliant
B140B-13-F	Diodes Incorporated	40	1	500 @ 1 A	500 @ 40 V	-65 ~ 150	DO-214AA, SMB	ROHS3 Compliant
B140HB-13-F	Diodes Incorporated	40	1	530 @ 1 A	100 @ 40 V	-55 ~ 150	DO-214AA, SMB	ROHS3 Compliant
B150B-13-F	Diodes Incorporated	50	1	700 @ 1 A	500 @ 50 V	-65 ~ 150	DO-214AA, SMB	ROHS3 Compliant
CDBB340-HF	Comchip Technology	40	3	500 @ 3 A	500 @ 40 V	-40 ~ 70	DO-214AA, SMB	ROHS3 Compliant
SD2114S040S5R0	KYOCERA AVX	40	5	550 @ 5 A	500 @ 40 V	-55 ~ 125	2-SMD, No Lead	ROHS3 Compliant
SD2114S040S8R0	KYOCERA AVX	40	8	550 @ 8 A	500 @ 40 V	-55 ~ 125	2-SMD, No Lead	ROHS3 Compliant
SK34B-LTP	Micro Commercial Co	40	3	500 @ 3 A	500 @ 40 V	-55 ~ 150	DO-214AA, SMB	ROHS3 Compliant
SK44BL-TP	Micro Commercial Co	40	4	450 @ 4 A	500 @ 40 V	-55 ~ 150	DO-214AA, SMB	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalent: The 5819SMJE3/TR13 (Microchip Technology) is the direct parametric equivalent to the 5819SMJ/TR13, with identical electrical specifications and operating temperature range. The primary distinction is packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and RoHS3 compliance status. This part is suitable for direct substitution in all applications where the 5819SMJ/TR13 is specified.

Compliant Alternatives with Matched Ratings: The B140HB-13-F (Diodes Incorporated) provides equivalent 40 V / 1 A performance with forward voltage of 530 mV at 1 A and superior reverse leakage characteristics (100 µA versus 1000 µA). This part maintains the operating temperature range of -55°C to 150°C and is ROHS3 compliant. The B140B-13-F variant offers lower forward voltage (500 mV at 1 A) with extended low-temperature operation (-65°C) but exhibits higher reverse leakage (500 µA).

Higher Current Capacity Alternatives: Parts rated for 3 A, 4 A, 5 A, or 8 A average rectified current (CDBB340-HF, SK34B-LTP, SK44BL-TP, SD2114S040S5R0, SD2114S040S8R0) are suitable for applications where circuit design permits higher current handling. These parts maintain 40 V reverse voltage rating and fast recovery characteristics. Selection depends on thermal design requirements and actual circuit current demands.

Voltage Derating Consideration: The B150B-13-F (Diodes Incorporated) provides 50 V reverse voltage rating with 1 A current capacity, suitable for applications requiring voltage margin above the 40 V specification. Forward voltage is elevated to 700 mV at 1 A.

All recommended substitutes are ROHS3 compliant and maintain Schottky technology with fast recovery speed characteristics. Selection should be based on specific application requirements for current capacity, forward voltage performance, reverse leakage characteristics, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 5819SMJE3/TR13 be used as a direct replacement for the 5819SMJ/TR13?

A: Yes. The 5819SMJE3/TR13 is a parametric equivalent with identical electrical specifications (40 V, 1 A, 550 mV forward voltage at 1 A) and operating temperature range (-55°C to 150°C). The difference is packaging format and RoHS3 compliance status. Both parts are surface mount DO-214AA/SMB packages and are electrically interchangeable.

Q: What is the difference between the B140B-13-F and B140HB-13-F?

A: Both are 40 V / 1 A Schottky diodes from Diodes Incorporated in DO-214AA/SMB packages. The B140HB-13-F has lower reverse leakage (100 µA versus 500 µA at 40 V) and slightly higher forward voltage (530 mV versus 500 mV at 1 A). The B140B-13-F supports extended low-temperature operation (-65°C versus -55°C). Selection depends on whether leakage current or low-temperature performance is the priority.

Q: Can I use a higher current rated diode (3 A, 4 A, 5 A, or 8 A) in place of the 1 A 5819SMJ/TR13?

A: Yes, if the circuit design permits. Higher current-rated diodes maintain the 40 V reverse voltage and fast recovery characteristics. They are suitable for applications where the actual circuit current is lower than the diode rating. Verify that forward voltage characteristics and reverse leakage specifications are acceptable for the specific application. Operating temperature range should also be confirmed.

Q: What does RoHS compliance status mean for this diode?

A: The original 5819SMJ/TR13 is RoHS non-compliant, while most substitute parts are ROHS3 compliant. ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements and does not contain restricted materials such as lead, cadmium, or hexavalent chromium. For applications subject to RoHS regulations, ROHS3 compliant alternatives (5819SMJE3/TR13, B140B-13-F, B140HB-13-F, or others listed) are required.

Q: Are the KYOCERA AVX SD2114S040S5R0 and SD2114S040S8R0 compatible with the original DO-214AA package footprint?

A: The KYOCERA AVX parts use a 2-SMD, No Lead package format (2114/DO-214AA) which differs from the standard DO-214AA/SMB package. While both are surface mount packages with similar physical dimensions, PCB footprint verification is required before substitution. Consult package drawings to confirm compatibility with existing PCB layouts.

Q: What is the significance of reverse leakage current differences among substitutes?

A: Reverse leakage current (specified at maximum reverse voltage) indicates the small current that flows through the diode when reverse biased. The 5819SMJ/TR13 has 1 mA leakage at 40 V. Substitutes range from 100 µA (B140HB-13-F) to 1000 µA (5819SMJE3/TR13). Lower leakage is beneficial in precision analog circuits and low-power applications. Higher leakage may be acceptable in power conversion applications where leakage current is negligible relative to forward current.

Q: Can the B150B-13-F (50 V rated) be used in a 40 V application?

A: Yes. The B150B-13-F is rated for 50 V reverse voltage, which exceeds the 40 V requirement of the original circuit. This provides voltage margin and is suitable for applications where additional voltage headroom is beneficial. However, forward voltage is higher (700 mV at 1 A versus 550 mV), which may affect circuit performance in precision applications. Verify that the higher forward voltage drop is acceptable for the specific circuit design.

Q: What packaging formats are available for substitutes?

A: Substitutes are available in Tape & Reel (TR), Cut Tape (CT) & Digi-Reel, and standard DO-214AA/SMB surface mount packages. Tape & Reel packaging is standard for high-volume production. Cut Tape & Digi-Reel formats are suitable for lower-volume applications. All formats are compatible with automated assembly equipment. Confirm packaging availability with your supplier based on production volume requirements.

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