SSL22 Schottky Diode 20V 2A DO-214AA Equivalent & Substitute Parts

Part Overview

The SSL22 is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 20V DC reverse voltage and 2A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary SSL22 becomes unavailable due to supply constraints, inventory depletion, or manufacturing discontinuation. Alternative components meeting identical or compatible electrical and mechanical specifications enable design continuity and production scheduling flexibility.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution eligibility for the SSL22 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

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

Acceptable Variation Parameters:

Voltage - Forward (Vf) Maximum @ If: Substitute parts may exceed the SSL22 specification of 410 mV @ 2A, provided the forward voltage does not compromise circuit performance
Current - Reverse Leakage @ Vr: Substitute parts may exceed the SSL22 specification of 400 µA @ 20V within acceptable leakage tolerances
Operating Temperature - Junction: Substitute parts with extended temperature ranges (-65°C to 150°C) are compatible with applications requiring -55°C to 125°C operation

Compliance Requirements:

RoHS3 Compliant status required
MSL 1 (Unlimited) moisture sensitivity level required
REACH Unaffected status required

Parts meeting these criteria are classified as direct electrical and mechanical equivalents suitable for drop-in replacement in the SSL22 application.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) mV @ If	Ir (Max) µA @ Vr	Package	Product Status	Temp Range °C
SSL22	Taiwan Semiconductor Corporation	20	2	410 @ 2A	400 @ 20V	DO-214AA, SMB	Active	-55 to 125
SL22-E3/52T	Vishay General Semiconductor - Diodes Division	20	2	440 @ 2A	400 @ 20V	DO-214AA, SMB	Active	-55 to 125
SS22-E3/52T	Vishay General Semiconductor - Diodes Division	20	2	500 @ 2A	400 @ 20V	DO-214AA, SMB	Active	-65 to 125
SS22-E3/5BT	Vishay General Semiconductor - Diodes Division	20	2	500 @ 2A	400 @ 20V	DO-214AA, SMB	Active	-65 to 125
B220-13-F	Diodes Incorporated	20	2	500 @ 2A	500 @ 20V	DO-214AA, SMB	Active	-65 to 150
B220A-13-F	Diodes Incorporated	20	2	500 @ 2A	500 @ 20V	DO-214AC, SMA	Active	-65 to 150
B220Q-13-F	Diodes Incorporated	20	2	500 @ 2A	500 @ 20V	DO-214AA, SMB	Active	-65 to 150
SK12-LTP	Micro Commercial Co	20	1	500 @ 1A	500 @ 20V	DO-214AA, SMB	Not For New Designs	-55 to 125
SK32B-LTP	Micro Commercial Co	20	3	500 @ 3A	500 @ 20V	DO-214AA, SMB	Not For New Designs	-55 to 150
SK32B-TP	Micro Commercial Co	20	3	500 @ 3A	500 @ 20V	DO-214AA, SMB	Obsolete	-55 to 125
SK42BL-TP	Micro Commercial Co	20	4	450 @ 4A	500 @ 20V	DO-214AA, SMB	Not For New Designs	-55 to 150

Engineering Selection Recommendations

Direct Equivalents (Active Status, Identical Current Rating 2A):

The following parts are classified as direct electrical and mechanical equivalents to the SSL22:

SL22-E3/52T (Vishay): Active product status. Identical 20V/2A ratings and DO-214AA SMB package. Forward voltage specification of 440 mV @ 2A is within acceptable tolerance above the SSL22 specification of 410 mV @ 2A. Operating temperature range -55°C to 125°C matches SSL22 requirements. RoHS3 compliant. Recommended for applications requiring Vishay component qualification.
SS22-E3/52T (Vishay): Active product status. Identical 20V/2A ratings and DO-214AA SMB package. Forward voltage specification of 500 mV @ 2A represents acceptable variation. Extended operating temperature range of -65°C to 125°C provides additional thermal margin. RoHS3 compliant. Recommended for applications with extended low-temperature requirements.
SS22-E3/5BT (Vishay): Active product status. Identical 20V/2A ratings and DO-214AA SMB package. Forward voltage specification of 500 mV @ 2A represents acceptable variation. Extended operating temperature range of -65°C to 125°C provides additional thermal margin. RoHS3 compliant. Cut Tape & Digi-Reel packaging option available.
B220-13-F (Diodes Incorporated): Active product status. Identical 20V/2A ratings and DO-214AA SMB package. Forward voltage specification of 500 mV @ 2A represents acceptable variation. Extended operating temperature range of -65°C to 150°C provides additional thermal margin. RoHS3 compliant. Recommended for applications requiring Diodes Incorporated component qualification.
B220Q-13-F (Diodes Incorporated): Active product status. Identical 20V/2A ratings and DO-214AA SMB package. Forward voltage specification of 500 mV @ 2A represents acceptable variation. Extended operating temperature range of -65°C to 150°C provides additional thermal margin. AEC-Q101 automotive qualification available. RoHS3 compliant. Recommended for automotive applications.

Package Variant (Active Status, Identical Current Rating 2A):

B220A-13-F (Diodes Incorporated): Active product status. Identical 20V/2A electrical ratings. Package variant: DO-214AC SMA instead of DO-214AA SMB. This part is electrically equivalent but requires PCB layout modification due to different package footprint. Extended operating temperature range of -65°C to 150°C. RoHS3 compliant. Use only when SMA package footprint is available on PCB.

Non-Recommended Parts (Obsolete or Not For New Designs Status):

The following parts do not meet current product status requirements and are not recommended for new designs:

SK12-LTP (Micro Commercial Co): Product status "Not For New Designs." Current rating of 1A is below SSL22 specification of 2A. Electrical substitution is not valid.
SK32B-LTP (Micro Commercial Co): Product status "Not For New Designs." Current rating of 3A exceeds SSL22 specification of 2A. While electrically compatible, this part is not recommended for new designs.
SK32B-TP (Micro Commercial Co): Product status "Obsolete." Current rating of 3A exceeds SSL22 specification of 2A. This part is not suitable for any new applications.
SK42BL-TP (Micro Commercial Co): Product status "Not For New Designs." Current rating of 4A exceeds SSL22 specification of 2A. While electrically compatible, this part is not recommended for new designs.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher current rating than the SSL22?

A: Parts with current ratings exceeding 2A (such as SK32B-LTP at 3A or SK42BL-TP at 4A) are electrically compatible with the SSL22 application from a voltage and package perspective. However, higher current-rated devices are not recommended for direct substitution in circuits designed for 2A operation. Use only when circuit design explicitly permits higher current capability and when the substitute part maintains Active product status.

Q: What is the difference between DO-214AA SMB and DO-214AC SMA packages?

A: Both are surface mount Schottky diode packages with identical electrical specifications. The primary difference is mechanical footprint. DO-214AA (SMB) and DO-214AC (SMA) have different land patterns on the PCB. The B220A-13-F uses DO-214AC SMA package and requires a different PCB footprint than the SSL22 DO-214AA SMB package. Verify PCB layout compatibility before selecting this substitute.

Q: Why do some substitute parts have higher forward voltage specifications?

A: Forward voltage (Vf) variation is a normal characteristic of Schottky diode manufacturing. The SSL22 specifies 410 mV @ 2A, while substitute parts such as SS22-E3/52T and B220-13-F specify 500 mV @ 2A. This 90 mV difference is within acceptable tolerance for most rectifier applications. Verify circuit design margins if forward voltage drop is critical to application performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are RoHS3 compliant and REACH unaffected, matching the SSL22 compliance status. MSL 1 (Unlimited) moisture sensitivity level is maintained across all equivalents.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging is supplied on continuous reel format suitable for automated pick-and-place assembly. Cut Tape (CT) packaging is supplied in individual tape segments. Both formats contain identical components. Selection depends on manufacturing process requirements and inventory management preferences.

Q: Can I use B220Q-13-F in non-automotive applications?

A: Yes. B220Q-13-F is AEC-Q101 automotive qualified, meaning it meets automotive reliability standards. This qualification does not restrict use in non-automotive applications. The part is fully compatible with standard industrial and consumer applications.

Q: Why is SK12-LTP listed as a substitute if it has only 1A current rating?

A: SK12-LTP is listed in the SSL22 substitute field from the provided input data, but it does not meet substitution criteria due to insufficient current rating (1A versus 2A required). This part is not a valid equivalent and should not be used as a replacement for SSL22 in 2A applications.

Q: What is the operating temperature range difference between SSL22 and substitute parts?

A: The SSL22 operates from -55°C to 125°C junction temperature. Several substitute parts (SS22-E3/52T, SS22-E3/5BT, B220-13-F, B220A-13-F, B220Q-13-F) extend the upper temperature limit to 150°C. This extended range provides additional thermal margin in high-temperature applications but does not affect compatibility in standard -55°C to 125°C operating conditions.

Q: Is SL22-E3/52T identical to SS22-E3/52T?

A: Both are Vishay Schottky diodes with identical 20V/2A ratings and DO-214AA SMB package. The primary difference is forward voltage specification: SL22-E3/52T specifies 440 mV @ 2A, while SS22-E3/52T specifies 500 mV @ 2A. Both are Active status and RoHS3 compliant. Selection depends on circuit design requirements for forward voltage drop.

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