SSL22 R5G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SSL22 R5G is a 20V, 2A Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation in DO-214AA (SMB) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs. The SSL22 R5G operates across a junction temperature range of -55°C to 125°C and meets ROHS3 compliance standards with unlimited moisture sensitivity rating (MSL 1).

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	410 mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	400 µA @ 20 V
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 125°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SSL22 R5G is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 20 V (exact match required)
Current - Average Rectified (Io): 2 A (exact match required)
Package / Case: DO-214AA, SMB (exact match required)
Mounting Type: Surface Mount (exact match required)
Technology: Schottky (exact match required)

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: 410 mV to 500 mV @ 2 A (acceptable range for functional equivalence)
Current - Reverse Leakage @ Vr: 400 µA to 500 µA @ 20 V (acceptable range)
Operating Temperature - Junction: -55°C minimum and 125°C minimum (must meet or exceed)
RoHS Status: ROHS3 Compliant (preferred for regulatory alignment)

Parts are classified into three categories:

Parametric Equivalents: Identical electrical specifications and package, manufactured by Taiwan Semiconductor Corporation (SSL22, SSL22H).

Direct Manufacturer Equivalents: Identical electrical specifications and package, manufactured by Vishay General Semiconductor - Diodes Division (SL22-E3/52T, SL22-E3/5BT, SL22-M3/52T).

Similar Alternatives: Meet primary substitution criteria but exhibit variations in forward voltage, reverse leakage, or operating temperature range (5817SMJ/TR13, B220-13-F, B220A-13-F, B220Q-13-F, B320B-13-F).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Reverse Leakage @ Vr	Package	Product Status	RoHS Status
SSL22 R5G	Taiwan Semiconductor Corporation	20 V	2 A	410 mV @ 2 A	400 µA @ 20 V	DO-214AA, SMB	Discontinued	ROHS3 Compliant
SSL22	Taiwan Semiconductor Corporation	20 V	2 A	410 mV @ 2 A	400 µA @ 20 V	DO-214AA, SMB	Active	ROHS3 Compliant
SSL22H	Taiwan Semiconductor Corporation	20 V	2 A	410 mV @ 2 A	400 µA @ 20 V	DO-214AA, SMB	Active	ROHS3 Compliant
SL22-E3/52T	Vishay General Semiconductor - Diodes Division	20 V	2 A	440 mV @ 2 A	400 µA @ 20 V	DO-214AA, SMB	Active	ROHS3 Compliant
SL22-E3/5BT	Vishay General Semiconductor - Diodes Division	20 V	2 A	440 mV @ 2 A	400 µA @ 20 V	DO-214AA, SMB	Active	ROHS3 Compliant
SL22-M3/52T	Vishay General Semiconductor - Diodes Division	20 V	2 A	440 mV @ 2 A	400 µA @ 20 V	DO-214AA, SMB	Active	ROHS3 Compliant
5817SMJ/TR13	Microchip Technology	20 V	1 A	450 mV @ 1 A	1 mA @ 20 V	DO-214AA, SMB	Active	RoHS non-compliant
B220-13-F	Diodes Incorporated	20 V	2 A	500 mV @ 2 A	500 µA @ 20 V	DO-214AA, SMB	Active	ROHS3 Compliant
B220A-13-F	Diodes Incorporated	20 V	2 A	500 mV @ 2 A	500 µA @ 20 V	DO-214AC, SMA	Active	ROHS3 Compliant
B220Q-13-F	Diodes Incorporated	20 V	2 A	500 mV @ 2 A	500 µA @ 20 V	DO-214AA, SMB	Active	ROHS3 Compliant
B320B-13-F	Diodes Incorporated	20 V	3 A	500 mV @ 3 A	500 µA @ 20 V	DO-214AA, SMB	Active	ROHS3 Compliant

Engineering Selection Recommendations

Preferred Direct Replacements:

SSL22 and SSL22H (Taiwan Semiconductor Corporation) are parametric equivalents with identical electrical specifications to the SSL22 R5G. Both parts are currently in active production status with ROHS3 compliance. SSL22H carries AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components. These parts provide the most direct substitution path with no electrical performance deviation.

Vishay Alternatives:

SL22-E3/52T, SL22-E3/5BT, and SL22-M3/52T (Vishay General Semiconductor - Diodes Division) meet all primary substitution criteria with forward voltage specifications of 440 mV @ 2 A, representing a 30 mV increase over the SSL22 R5G baseline. All three parts maintain 20 V reverse voltage rating, 2 A average rectified current, and ROHS3 compliance. These components are suitable for applications where the marginal forward voltage increase does not impact circuit performance.

Diodes Incorporated Options:

B220-13-F and B220Q-13-F (Diodes Incorporated) provide 20 V, 2 A Schottky rectification in DO-214AA SMB package with ROHS3 compliance. Forward voltage specification is 500 mV @ 2 A, representing a 90 mV increase relative to the SSL22 R5G. B220Q-13-F carries AEC-Q101 automotive qualification. These parts are suitable for applications tolerating higher forward voltage dissipation.

B220A-13-F (Diodes Incorporated) is packaged in DO-214AC SMA format rather than DO-214AA SMB, requiring PCB layout modification and is not recommended for direct mechanical substitution.

Current-Rated Alternative:

5817SMJ/TR13 (Microchip Technology) is rated for 1 A average rectified current, representing a 50% reduction from the SSL22 R5G 2 A specification. This part is not suitable for applications requiring 2 A continuous rectification. Additionally, this part carries RoHS non-compliant status. Substitution is not recommended.

Over-Rated Alternative:

B320B-13-F (Diodes Incorporated) is rated for 3 A average rectified current, exceeding the SSL22 R5G 2 A specification. This part is electrically compatible and suitable for applications where higher current capacity provides design margin. ROHS3 compliance and AEC-Q101 automotive qualification are provided.

Frequently Asked Questions (FAQ)

Q: Can SSL22 R5G be directly replaced with SSL22 or SSL22H?

A: Yes. SSL22 and SSL22H are parametric equivalents with identical electrical specifications (20 V, 2 A, 410 mV forward voltage @ 2 A, 400 µA reverse leakage @ 20 V) and package format (DO-214AA SMB). Both are in active production status. SSL22H includes AEC-Q101 automotive qualification if required by application.

Q: What is the difference between Vishay SL22-E3/52T and Diodes B220-13-F?

A: Both parts meet the primary substitution criteria of 20 V reverse voltage, 2 A average rectified current, and DO-214AA SMB package. The primary difference is forward voltage specification: SL22-E3/52T is rated 440 mV @ 2 A while B220-13-F is rated 500 mV @ 2 A. The 60 mV difference results in higher power dissipation with the B220-13-F. Selection depends on thermal design constraints and acceptable voltage drop in the application circuit.

Q: Why is B220A-13-F not recommended as a direct substitute?

A: B220A-13-F is packaged in DO-214AC SMA format, not DO-214AA SMB. This package difference requires PCB layout modification and is not a direct mechanical substitute. The electrical specifications are compatible, but physical footprint incompatibility prevents drop-in replacement.

Q: Is 5817SMJ/TR13 suitable for SSL22 R5G replacement?

A: No. The 5817SMJ/TR13 is rated for 1 A average rectified current, which is 50% below the SSL22 R5G 2 A specification. Additionally, this part carries RoHS non-compliant status. Substitution would result in inadequate current capacity and regulatory non-compliance.

Q: Can B320B-13-F be used instead of SSL22 R5G?

A: Yes, with design consideration. B320B-13-F is rated for 3 A average rectified current, exceeding the SSL22 R5G 2 A requirement. All other electrical parameters (20 V reverse voltage, 500 mV forward voltage @ 3 A, fast recovery speed, DO-214AA SMB package) are compatible. This part provides higher current capacity margin and includes AEC-Q101 automotive qualification. Use is appropriate when over-rating provides design benefit.

Q: What is the significance of AEC-Q101 qualification on SSL22H and B220Q-13-F?

A: AEC-Q101 is an automotive electronics qualification standard. Parts carrying this qualification have undergone additional reliability testing and are approved for automotive applications. If the design application requires automotive-grade components, SSL22H or B220Q-13-F are appropriate selections. Non-automotive applications do not require this qualification.

Q: How does forward voltage affect circuit performance?

A: Forward voltage (Vf) determines the voltage drop across the diode during conduction. The SSL22 R5G specifies 410 mV @ 2 A. Vishay alternatives specify 440 mV @ 2 A (30 mV higher), and Diodes alternatives specify 500 mV @ 2 A (90 mV higher). Higher forward voltage results in greater power dissipation and reduced output voltage in rectifier circuits. Selection depends on whether the application circuit can tolerate the increased voltage drop without performance degradation.

Q: Are all recommended substitutes ROHS3 compliant?

A: No. The 5817SMJ/TR13 (Microchip Technology) is RoHS non-compliant and should not be used in applications requiring RoHS compliance. All other recommended parts (SSL22, SSL22H, SL22-E3/52T, SL22-E3/5BT, SL22-M3/52T, B220-13-F, B220Q-13-F, B320B-13-F) are ROHS3 compliant.

Q: What is the difference between SSL22 and SSL22H?

A: Both parts are manufactured by Taiwan Semiconductor Corporation with identical electrical specifications (20 V, 2 A, 410 mV forward voltage @ 2 A). The primary difference is that SSL22H carries AEC-Q101 automotive qualification, making it suitable for automotive applications. SSL22 is the standard industrial-grade version. Selection depends on application requirements.

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