STTH2R02UY Equivalent & Substitute Parts

Part Overview

The STTH2R02UY is a general-purpose fast recovery rectifier diode manufactured by STMicroelectronics, rated for 200 V DC reverse voltage and 2 A average rectified current in a surface mount SMB (DO-214AA) package. This diode is designed for standard rectification applications requiring fast recovery characteristics with a reverse recovery time of 30 ns. The part is active in production status and carries automotive-grade qualification with full RoHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 2 A
Reverse Recovery Time (trr)	30	ns
Current - Reverse Leakage @ Vr	3	µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	175	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the STTH2R02UY are classified based on the following substitution criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 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)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (required)
RoHS Status: ROHS3 Compliant (required)
Moisture Sensitivity Level (MSL): 1 (Unlimited) (required)

Secondary Parameters (Allowable Variation):

Voltage - Forward (Vf) (Max) @ If: 920 mV to 1000 mV @ 2 A
Reverse Recovery Time (trr): 25 ns to 50 ns
Current - Reverse Leakage @ Vr: 3 µA to 10 µA @ 200 V
Operating Temperature - Junction (Max): 150°C to 175°C

Parts meeting all primary criteria and falling within secondary parameter tolerances are classified as direct substitutes. Parts with current ratings below 2 A or above 2 A are classified as similar alternatives with application-specific considerations.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Package	Technology
STTH2R02UY	STMicroelectronics	200	2	1.0 @ 2A	30	3 @ 200V	175	DO-214AA, SMB	Standard
STTH2R02U	STMicroelectronics	200	2	1.0 @ 2A	30	3 @ 200V	175	DO-214AA, SMB	Standard
CURB203-G	Comchip Technology	200	2	1.0 @ 2A	50	5 @ 200V	150	DO-214AA, SMB	Standard
ER1D-LTP	Micro Commercial Co	200	1	0.95 @ 1A	35	5 @ 200V	175	DO-214AA, SMB	Standard
ER2D-LTP	Micro Commercial Co	200	2	0.95 @ 2A	35	5 @ 200V	175	DO-214AA, SMB	Standard
ER3DB-TP	Micro Commercial Co	200	3	0.95 @ 3A	35	5 @ 200V	150	DO-214AA, SMB	Standard
ES2D	Good-Ark Semiconductor	200	2	0.95 @ 2A	35	10 @ 200V	150	DO-214AA, SMB	Standard
ES2D-13-F	Diodes Incorporated	200	2	0.92 @ 2A	25	5 @ 200V	150	DO-214AA, SMB	Standard
ES3DB-13-F	Diodes Incorporated	200	3	0.90 @ 3A	25	10 @ 200V	150	DO-214AA, SMB	Standard
MB220_R1_00001	Panjit International Inc.	200	2	0.90 @ 2A	—	50 @ 200V	175	DO-214AA, SMB	Schottky
MURS120	Diodes Incorporated	200	1	0.875 @ 1A	25	2 @ 200V	150	DO-214AA, SMB	Standard

Engineering Selection Recommendations

Direct Parametric Equivalent:

STTH2R02U (STMicroelectronics) is a direct parametric equivalent to STTH2R02UY. Both parts share identical electrical specifications (200 V, 2 A, 30 ns reverse recovery time, 1 V forward voltage) and identical package configuration. The primary difference is packaging format: STTH2R02UY is supplied in standard packaging, while STTH2R02U is supplied in Cut Tape (CT) and Digi-Reel® format. Both parts carry ROHS3 compliance, MSL 1 rating, and active product status. Selection between these two variants depends on procurement and assembly requirements.

Functionally Compatible Substitutes (2 A Rating):

ER2D-LTP (Micro Commercial Co), ES2D (Good-Ark Semiconductor), and ES2D-13-F (Diodes Incorporated) are functionally compatible substitutes maintaining the 200 V, 2 A electrical specification. These parts exhibit forward voltage characteristics between 0.92 V and 0.95 V at 2 A, compared to 1.0 V for the STTH2R02UY. Reverse recovery times range from 25 ns to 35 ns, all within the fast recovery classification. All three parts carry ROHS3 compliance and MSL 1 rating. Operating temperature maximums range from 150°C to 175°C. These substitutes are suitable for applications where the lower forward voltage drop and comparable recovery characteristics provide equivalent or improved performance.

CURB203-G (Comchip Technology) maintains 200 V, 2 A specifications with 50 ns reverse recovery time, remaining within the fast recovery classification. Forward voltage is 1.0 V at 2 A. Operating temperature maximum is 150°C. This part is suitable for applications with less stringent thermal requirements.

Higher Current Alternatives (3 A Rating):

ER3DB-TP (Micro Commercial Co) and ES3DB-13-F (Diodes Incorporated) provide 200 V, 3 A ratings in the same DO-214AA, SMB package. These parts offer increased current capacity while maintaining fast recovery characteristics (35 ns and 25 ns respectively). Forward voltages are 0.95 V and 0.90 V at 3 A. Operating temperature maximums are 150°C. These alternatives are applicable in designs requiring higher current margins or where component standardization across multiple current ratings is beneficial.

Lower Current Alternative (1 A Rating):

ER1D-LTP (Micro Commercial Co) and MURS120 (Diodes Incorporated) provide 200 V, 1 A ratings. These parts are suitable for applications with reduced current requirements. MURS120 exhibits superior reverse leakage characteristics (2 µA at 200 V) and faster recovery time (25 ns). Both parts carry ROHS3 compliance and MSL 1 rating.

Technology Variant (Schottky):

MB220_R1_00001 (Panjit International Inc.) is a Schottky diode variant rated 200 V, 2 A in the same DO-214AA, SMB package. Schottky technology provides lower forward voltage (0.90 V at 2 A) compared to the standard rectifier technology of STTH2R02UY. Reverse leakage is higher at 50 µA at 200 V. This part is applicable in designs where reduced forward voltage drop and associated power dissipation are prioritized. Operating temperature maximum is 175°C. ROHS3 compliance and MSL 1 rating are maintained.

All recommended substitutes maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and active product status. Selection should be based on specific application requirements regarding forward voltage drop, reverse recovery time, reverse leakage characteristics, and thermal operating range.

Frequently Asked Questions (FAQ)

Q: Can STTH2R02U be used as a direct replacement for STTH2R02UY?

A: Yes. STTH2R02U is a direct parametric equivalent with identical electrical specifications (200 V, 2 A, 30 ns reverse recovery time, 1 V forward voltage) and package configuration (DO-214AA, SMB). The difference is packaging format: STTH2R02UY uses standard packaging while STTH2R02U uses Cut Tape (CT) and Digi-Reel® format. Both carry ROHS3 compliance and MSL 1 rating.

Q: What is the primary substitution criterion for the STTH2R02UY?

A: The primary substitution criteria are: 200 V DC reverse voltage, 2 A average rectified current, DO-214AA/SMB package, surface mount configuration, fast recovery classification (≤ 500 ns), ROHS3 compliance, and MSL 1 rating. Parts meeting all these criteria are classified as direct substitutes.

Q: Can I use a 1 A rated diode (such as MURS120 or ER1D-LTP) in place of the 2 A STTH2R02UY?

A: No. The STTH2R02UY is rated for 2 A average rectified current. Using a 1 A rated diode would result in operation beyond the component's rated current capacity, creating reliability and thermal management issues. A 1 A diode is suitable only for applications designed for 1 A operation.

Q: Can I use a 3 A rated diode (such as ER3DB-TP or ES3DB-13-F) in place of the 2 A STTH2R02UY?

A: Yes, from an electrical compatibility standpoint. A 3 A rated diode maintains the same 200 V voltage rating and DO-214AA/SMB package, with fast recovery characteristics. The higher current rating provides additional margin. However, application-specific factors such as thermal design, PCB layout, and circuit requirements must be evaluated. The 3 A alternatives have maximum operating temperatures of 150°C compared to 175°C for the STTH2R02UY.

Q: What is the difference between standard rectifier diodes and Schottky diodes in this comparison?

A: The STTH2R02UY is a standard rectifier diode using junction technology. MB220_R1_00001 is a Schottky diode variant. Schottky diodes exhibit lower forward voltage drop (0.90 V versus 1.0 V at 2 A) and higher reverse leakage current (50 µA versus 3 µA at 200 V). Schottky technology is beneficial in applications prioritizing reduced power dissipation from forward voltage drop. Standard rectifier diodes typically offer lower reverse leakage and are preferred in high-impedance circuits.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the compliance status of the STTH2R02UY. All parts also carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What does reverse recovery time (trr) represent, and why does it vary among substitutes?

A: Reverse recovery time is the interval required for a diode to transition from forward conduction to reverse blocking when the applied voltage reverses polarity. The STTH2R02UY specifies 30 ns. Substitute parts range from 25 ns to 50 ns, all within the fast recovery classification (≤ 500 ns). Faster recovery times reduce switching losses in high-frequency applications. Slower recovery times may be acceptable in lower-frequency applications.

Q: What does forward voltage (Vf) represent, and why is variation acceptable?

A: Forward voltage is the voltage drop across the diode when conducting forward current. The STTH2R02UY specifies 1.0 V at 2 A. Substitute parts range from 0.90 V to 0.95 V at 2 A. Lower forward voltage reduces power dissipation and heat generation. Variation within this range is acceptable provided the application's thermal design and voltage regulation accommodate the difference.

Q: What is reverse leakage current, and why does it vary among substitutes?

A: Reverse leakage current is the small current flowing through the diode when reverse voltage is applied. The STTH2R02UY specifies 3 µA at 200 V. Substitute parts range from 2 µA to 50 µA at 200 V. Lower reverse leakage is beneficial in high-impedance circuits and precision applications. Higher leakage (such as in Schottky variants) is acceptable in power conversion applications where leakage current is negligible relative to load current.

Q: Does operating temperature maximum affect substitution suitability?

A: Operating temperature maximum is a design constraint. The STTH2R02UY specifies 175°C maximum junction temperature. Some substitutes (CURB203-G, ER3DB-TP, ES2D, ES2D-13-F, MURS120) specify 150°C maximum. If the application requires operation near or above 150°C, these parts may not be suitable. Parts with 175°C maximum (STTH2R02U, ER1D-LTP, ER2D-LTP, MB220_R1_00001) maintain thermal compatibility with the original specification.

Q: What packaging formats are available, and does this affect substitution?

A: All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and electrical compatibility. Packaging format variations (standard packaging, Cut Tape, Digi-Reel®, Tape & Reel) affect procurement and assembly processes but do not affect electrical performance or board-level compatibility.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message