SK220-LTP Equivalent & Substitute Parts

Part Overview

The SK220-LTP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 200V 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. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, higher current ratings, extended temperature ranges, or improved electrical characteristics while maintaining functional compatibility within the same package and voltage class.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 2 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 200 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 125	°C
Technology	Schottky	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SK220-LTP is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200V
Current - Average Rectified (Io): Must equal or exceed 2A
Package / Case: Must be DO-214AA (SMB) surface mount
Technology: Must be Schottky diode
Mounting Type: Must be Surface Mount

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: Lower values indicate improved efficiency
Current - Reverse Leakage @ Vr: Lower values indicate superior reverse blocking
Operating Temperature - Junction: Extended ranges provide design flexibility
RoHS Status: Must maintain ROHS3 compliance

Parts are grouped as follows:

Upgrade Substitute: CDBB2200-HF meets all primary criteria with identical electrical ratings and improved reverse leakage performance (30pF vs. 170pF capacitance).

Similar Substitutes: S320 and STPS2200U meet primary criteria with variations in current rating, forward voltage, or temperature range that require design verification for specific applications.

Parameter Comparison

Parameter	SK220-LTP (Main)	CDBB2200-HF (Upgrade)	S320 (Similar)	STPS2200U (Similar)
Manufacturer	Micro Commercial Co	Comchip Technology	onsemi	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	2 A	2 A	3 A	2 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 2 A	900 mV @ 2 A	900 mV @ 3 A	800 mV @ 2 A
Speed	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 @ 200 V	500 µA @ 200 V	7 µA @ 200 V	5 µA @ 200 V
Capacitance @ Vr, F	170 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz	—	—
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature - Junction	-55 to 125 °C	-50 to 175 °C	-65 to 150 °C	-40 to 175 °C
Product Status	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

CDBB2200-HF (Comchip Technology): This part is the direct upgrade substitute for SK220-LTP. It maintains identical voltage and current ratings, identical forward voltage characteristics, and identical fast recovery speed. The CDBB2200-HF offers superior capacitance performance (30pF vs. 170pF) and an extended operating temperature range (-50 to 175°C vs. -55 to 125°C). Both parts are Active product status and ROHS3 compliant. The CDBB2200-HF is suitable for direct replacement in new designs and existing applications.

STPS2200U (STMicroelectronics): This part meets the primary substitution criteria with identical voltage and current ratings in the same DO-214AA package. The STPS2200U provides improved forward voltage performance (800 mV vs. 900 mV @ 2A) and significantly lower reverse leakage current (5 µA vs. 500 µA @ 200V). The operating temperature range extends to 175°C. Both parts are Active product status and ROHS3 compliant. The STPS2200U is suitable for applications where lower forward voltage drop and reduced leakage are beneficial.

S320 (onsemi): This part exceeds the primary substitution criteria with a higher current rating (3A vs. 2A) while maintaining the 200V voltage rating and DO-214AA package. The S320 offers significantly lower reverse leakage current (7 µA vs. 500 µA @ 200V) and an extended lower temperature limit (-65°C). However, the S320 is classified as Not For New Designs. This part is suitable only for legacy system maintenance or replacement applications where new design qualification is not required.

Frequently Asked Questions (FAQ)

Q: Can CDBB2200-HF be used as a direct replacement for SK220-LTP?

A: Yes. The CDBB2200-HF is a direct substitute with identical voltage (200V), current (2A), forward voltage (900 mV @ 2A), and package (DO-214AA SMB) specifications. Both parts are Active status and ROHS3 compliant. The CDBB2200-HF offers improved capacitance characteristics and extended temperature range.

Q: What is the difference between the SK220-LTP and STPS2200U?

A: Both parts share identical voltage (200V), current (2A), speed (fast recovery ≤ 500ns), and package (DO-214AA SMB) ratings. The STPS2200U provides lower forward voltage (800 mV vs. 900 mV @ 2A) and significantly lower reverse leakage current (5 µA vs. 500 µA @ 200V). The STPS2200U operating temperature range extends to 175°C compared to 125°C for SK220-LTP.

Q: Why is S320 listed as "Not For New Designs"?

A: The S320 is classified as Not For New Designs by onsemi. This designation indicates the manufacturer no longer recommends this part for new product development. The S320 remains available for legacy system support and replacement applications only. For new designs, CDBB2200-HF or STPS2200U are recommended alternatives.

Q: Are all substitute parts available in the same packaging format?

A: No. SK220-LTP and CDBB2200-HF are supplied in Tape & Reel (TR) packaging. S320 and STPS2200U are supplied in Cut Tape (CT) & Digi-Reel® packaging. Packaging format selection depends on assembly process requirements and volume specifications.

Q: What does "Fast Recovery ≤ 500ns, > 200mA (Io)" mean?

A: This specification indicates the diode exhibits fast recovery characteristics with reverse recovery time not exceeding 500 nanoseconds when the forward current exceeds 200 milliamps. All listed parts meet this specification, ensuring consistent switching performance in high-frequency applications.

Q: Can S320 (3A rating) be used in place of SK220-LTP (2A rating)?

A: Yes, from an electrical standpoint. The S320 exceeds the current requirement (3A vs. 2A) and maintains the same voltage rating (200V) and package (DO-214AA SMB). However, the S320 is Not For New Designs. For new applications, CDBB2200-HF or STPS2200U are preferred alternatives.

Q: Which substitute part offers the lowest forward voltage drop?

A: The STPS2200U offers the lowest forward voltage at 800 mV @ 2A, compared to 900 mV @ 2A for both SK220-LTP and CDBB2200-HF. Lower forward voltage reduces power dissipation in rectification applications.

Q: Are all parts RoHS3 compliant?

A: Yes. SK220-LTP, CDBB2200-HF, S320, and STPS2200U are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message