SS215H Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS215H is an active-status Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 150V DC reverse voltage and 2A average rectified current in a surface mount DO-214AA (SMB) package. This component is designed for fast recovery applications with switching speeds ≤500ns and operates across a junction temperature range of -55°C to 150°C. The part carries AEC-Q101 automotive qualification and ROHS3 compliance.

Equivalent and substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the SS215H within the Schottky diode rectifier category. Substitutes are selected from manufacturers offering compatible packaging, voltage ratings, and thermal performance characteristics.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A	mV
Speed	Fast Recovery ≤500ns, >200mA (Io)	ns
Current - Reverse Leakage @ Vr	100	µA @ 150 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution logic for the SS215H is based on the following criteria:

Primary Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 150V minimum
Package / Case: DO-214AA or SMB surface mount
Technology: Schottky rectifier diode
Speed: Fast Recovery ≤500ns, >200mA (Io)
RoHS Status: ROHS3 Compliant
Mounting Type: Surface Mount

Current Rating Consideration: Substitute parts are grouped by average rectified current (Io) capacity. Parts rated at 2A or higher are direct substitutes for the SS215H 2A rating. Parts rated below 2A (such as the 1A CDBB1150-HF) are listed as lower-capacity alternatives suitable only for applications with reduced current requirements.

Thermal Performance: Operating temperature ranges vary among substitutes. The SS215H operates to 150°C junction maximum. Substitutes with extended temperature ranges (-50°C to 175°C or -40°C to 175°C) provide additional thermal margin.

Leakage Current: The SS215H specifies 100µA reverse leakage at 150V. Substitute parts from STMicroelectronics (STPS series) exhibit significantly lower leakage (2µA), while Comchip Technology parts specify 500µA. Selection depends on application leakage requirements.

Parameter Comparison

Parameter	SS215H (Main)	CDBB1150-HF	CDBB2150-HF	CDBB3150-HF	SBR3150SB-13	STPS3150U	STPS3150UY
Manufacturer	Taiwan Semiconductor	Comchip Technology	Comchip Technology	Comchip Technology	Diodes Incorporated	STMicroelectronics	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	150 V	150 V	150 V	150 V	150 V	150 V	150 V
Current - Average Rectified (Io)	2 A	1 A	2 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A	870 mV @ 1 A	875 mV @ 2 A	870 mV @ 30 A	820 mV @ 3 A	820 mV @ 3 A	820 mV @ 3 A
Speed	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA
Current - Reverse Leakage @ Vr	100 µA @ 150 V	500 µA @ 150 V	500 µA @ 150 V	500 µA @ 150 V	500 µA @ 150 V	2 µA @ 150 V	2 µA @ 150 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature - Junction	-55 to 150°C	-50 to 175°C	-50 to 175°C	-50 to 175°C	Max 150°C	Max 175°C	-40 to 175°C
Grade	Automotive	—	—	—	—	—	Automotive
RoHS Status	ROHS3 Compliant	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)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent (2A Current Rating): The CDBB2150-HF from Comchip Technology is the closest functional equivalent to the SS215H, matching the 2A current rating and 150V voltage specification in identical DO-214AA packaging. Both parts are active-status products with ROHS3 compliance. The CDBB2150-HF operates across -50°C to 175°C, providing extended upper temperature margin compared to the SS215H's 150°C maximum.

Higher Current Capacity Substitutes (3A Rating): The CDBB3150-HF, SBR3150SB-13, STPS3150U, and STPS3150UY all provide 3A current capacity, exceeding the SS215H's 2A specification. These parts are suitable for applications where increased current headroom is required. All maintain 150V voltage rating and DO-214AA/SMB packaging compatibility.

Automotive-Grade Selection: For applications requiring automotive qualification, the SS215H carries AEC-Q101 certification. Among substitutes, only the STPS3150UY explicitly lists automotive grade qualification. The STPS3150UY also provides the lowest reverse leakage current (2µA) and extended operating temperature range (-40°C to 175°C).

Leakage Current Consideration: Applications sensitive to reverse leakage current should prioritize STMicroelectronics STPS series parts (2µA leakage), which significantly outperform the SS215H (100µA) and Comchip alternatives (500µA).

Forward Voltage Performance: The STPS3150U and STPS3150UY exhibit the lowest forward voltage drop (820mV @ 3A), compared to the SS215H (950mV @ 2A). This characteristic reduces power dissipation in high-frequency switching applications.

Lower Current Requirement: The CDBB1150-HF is rated for 1A average rectified current and is suitable only for applications with current requirements below 2A. This part is not recommended as a substitute for the SS215H in 2A-rated circuits.

Frequently Asked Questions (FAQ)

Q: Can the CDBB2150-HF directly replace the SS215H in production? A: Yes. The CDBB2150-HF matches the SS215H in voltage rating (150V), current capacity (2A), package type (DO-214AA/SMB), and compliance status (ROHS3). Both are active-status products. The CDBB2150-HF provides extended operating temperature range (-50°C to 175°C versus -55°C to 150°C), which is compatible with the SS215H's thermal envelope.

Q: What is the difference between the STPS3150U and STPS3150UY? A: Both parts share identical electrical specifications (150V, 3A, 820mV forward voltage, 2µA leakage). The STPS3150UY is designated as automotive-grade with operating temperature range -40°C to 175°C, while the STPS3150U specifies maximum junction temperature of 175°C without explicit automotive qualification. For automotive applications, STPS3150UY is the appropriate selection.

Q: Why does the SS215H have higher forward voltage (950mV) than substitute parts (820-875mV)? A: Forward voltage specifications are measured at different current levels. The SS215H is specified at 2A, while higher-capacity substitutes (STPS series) are measured at 3A. Forward voltage characteristics vary with current density and die design. Lower forward voltage in substitutes reduces power dissipation but does not affect functional compatibility at the SS215H's 2A operating point.

Q: Is the CDBB1150-HF suitable as a substitute for the SS215H? A: No. The CDBB1150-HF is rated for 1A average rectified current, which is below the SS215H's 2A specification. This part is suitable only for applications with maximum current requirements of 1A or less. Using the CDBB1150-HF in a 2A circuit would exceed its current rating.

Q: What is the significance of reverse leakage current differences between parts? A: Reverse leakage current affects power consumption during the diode's blocking state. The SS215H specifies 100µA leakage, while STMicroelectronics STPS parts specify 2µA. Lower leakage reduces standby power dissipation and heat generation. Comchip parts specify 500µA, which is higher than the SS215H. Selection depends on application sensitivity to leakage current and thermal constraints.

Q: Are all substitute parts available in the same packaging? A: Yes. All listed substitutes use DO-214AA or SMB surface mount packaging, which are mechanically and electrically compatible. Footprint and PCB layout remain unchanged during substitution.

Q: Does the SS215H's automotive grade (AEC-Q101) requirement limit substitute selection? A: The SS215H carries AEC-Q101 automotive qualification. Among substitutes, only the STPS3150UY explicitly lists automotive grade. For non-automotive applications, all substitutes are acceptable. For automotive applications requiring AEC-Q101 compliance, the STPS3150UY is the qualified alternative.

Q: What is the operating temperature range difference between the SS215H and substitutes? A: The SS215H operates from -55°C to 150°C junction temperature. Comchip substitutes (CDBB series) operate -50°C to 175°C. STMicroelectronics STPS3150U operates to 175°C maximum. STPS3150UY operates -40°C to 175°C. All substitutes provide equal or extended upper temperature limits, ensuring thermal compatibility.

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