STTH2L06U Equivalent & Substitute Parts

Part Overview

The STTH2L06U is a general-purpose fast recovery rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 2 A average rectified current in a surface mount SMB (DO-214AA) package. This diode is designed for applications requiring fast switching characteristics with a reverse recovery time of 85 ns and forward voltage of 1.3 V at 2 A. The part is Active in product status and RoHS3 compliant.

Equivalent and substitute parts are identified based on matching or exceeding the electrical specifications and maintaining compatibility with the SMB surface mount package. Substitutes are necessary when the primary part is unavailable, when alternative manufacturers are preferred for supply chain diversification, or when design requirements allow for components with enhanced performance characteristics within the same package footprint.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	85	ns
Current - Reverse Leakage @ Vr	2	µA @ 600 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction (Max)	175	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the STTH2L06U are grouped based on the following substitution criteria:

Primary Substitution Criteria (Must Match):

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Current - Average Rectified (Io): 2 A minimum
Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB

Secondary Compatibility Factors:

Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): Lower values indicate improved performance
Forward Voltage (Vf): Lower values indicate improved efficiency
Reverse Leakage Current: Lower values indicate improved performance
Operating Temperature Range: Must accommodate application requirements
RoHS and Compliance Status: ROHS3 compliance required for regulated applications

Parts are organized into two categories:

Category A - Direct Equivalents (2 A Rating): Parts with 600 V reverse voltage and 2 A average rectified current, maintaining identical current handling capacity.

Category B - Higher Current Alternatives (3 A Rating): Parts with 600 V reverse voltage and 3 A average rectified current, providing increased current capacity within the same package.

Category C - Lower Current Alternatives (1 A Rating): Parts with 600 V reverse voltage and 1 A average rectified current, suitable only for applications with reduced current requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Package	Product Status
STTH2L06U	STMicroelectronics	600	2	1.3 @ 2A	85	2 @ 600V	175	DO-214AA, SMB	Active
ER2J	Diotec Semiconductor	600	2	1.7 @ 2A	75	5 @ 600V	150	DO-214AA, SMB	Active
ER2J-LTP	Micro Commercial Co	600	2	1.7 @ 2A	35	5 @ 600V	175	DO-214AA, SMB	Active
ER3JB-TP	Micro Commercial Co	600	3	1.7 @ 3A	35	5 @ 600V	150	DO-214AA, SMB	Active
MURS160	Good-Ark Semiconductor	600	2	1.25 @ 1A	75	5 @ 600V	175	DO-214AA, SMB	Active
MURS160-13-F	Diodes Incorporated	600	1	1.25 @ 1A	50	5 @ 600V	175	DO-214AA, SMB	Active
MURS160T3G	onsemi	600	1	1.25 @ 1A	75	5 @ 600V	175	DO-214AA, SMB	Active
MURS260T3G	onsemi	600	2	1.45 @ 2A	75	5 @ 600V	175	DO-214AA, SMB	Active
MURS360BT3G	onsemi	600	3	1.25 @ 3A	75	3 @ 600V	175	DO-214AA, SMB	Active
NRVUS360VBT3G	onsemi	600	3	1.25 @ 3A	75	3 @ 600V	175	DO-214AA, SMB	Not For New Designs
RS1JB-13-F	Diodes Incorporated	600	1	1.3 @ 1A	250	5 @ 600V	150	DO-214AA, SMB	Active

Engineering Selection Recommendations

Direct Equivalent Selection (2 A Rated Parts):

For applications requiring exact current rating replacement of the STTH2L06U, the following parts are recommended:

MURS260T3G (onsemi): Maintains 600 V, 2 A specifications with forward voltage of 1.45 V @ 2 A and reverse recovery time of 75 ns. Operating temperature range extends to 175°C maximum. Product status is Active. RoHS3 compliant with MSL 1 rating.
ER2J-LTP (Micro Commercial Co): Provides 600 V, 2 A specifications with improved reverse recovery time of 35 ns. Operating temperature range is -65°C to 175°C. Product status is Active. RoHS3 compliant with MSL 1 rating and REACH Unaffected status.
ER2J (Diotec Semiconductor): Offers 600 V, 2 A specifications with reverse recovery time of 75 ns. Operating temperature range is -50°C to 150°C. Product status is Active. RoHS3 compliant.

Higher Current Capacity Selection (3 A Rated Parts):

For applications where increased current capacity is acceptable within the same SMB package:

MURS360BT3G (onsemi): Rated for 600 V, 3 A with forward voltage of 1.25 V @ 3 A and reverse recovery time of 75 ns. Operating temperature range is -65°C to 175°C. Product status is Active. RoHS3 compliant with MSL 1 rating.
ER3JB-TP (Micro Commercial Co): Rated for 600 V, 3 A with forward voltage of 1.7 V @ 3 A and improved reverse recovery time of 35 ns. Operating temperature range is -50°C to 150°C. Product status is Active. RoHS3 compliant with MSL 1 rating.

Not Recommended for New Designs:

NRVUS360VBT3G (onsemi): Although electrically compatible as a 600 V, 3 A part, this component carries a "Not For New Designs" product status and is automotive-qualified (AEC-Q101). Selection should be limited to legacy design maintenance or automotive-specific applications.

Lower Current Alternatives (1 A Rated Parts):

The following parts are suitable only for applications with reduced current requirements below 2 A:

MURS160T3G (onsemi): 600 V, 1 A rating with forward voltage of 1.25 V @ 1 A. Operating temperature range is -65°C to 175°C. Product status is Active.
MURS160-13-F (Diodes Incorporated): 600 V, 1 A rating with forward voltage of 1.25 V @ 1 A and reverse recovery time of 50 ns. Operating temperature range is -55°C to 175°C. Product status is Active.
RS1JB-13-F (Diodes Incorporated): 600 V, 1 A rating with forward voltage of 1.3 V @ 1 A. Operating temperature range is -65°C to 150°C. Product status is Active.

Frequently Asked Questions (FAQ)

Q: Can MURS260T3G be used as a direct replacement for STTH2L06U?

A: Yes. Both parts are rated for 600 V reverse voltage and 2 A average rectified current in DO-214AA SMB packages. MURS260T3G has a forward voltage of 1.45 V @ 2 A compared to STTH2L06U's 1.3 V @ 2 A, representing a 0.15 V increase. Both parts are RoHS3 compliant and rated to 175°C maximum junction temperature. The primary difference is the manufacturer (onsemi vs. STMicroelectronics).

Q: What is the advantage of ER2J-LTP over STTH2L06U?

A: ER2J-LTP offers a significantly improved reverse recovery time of 35 ns compared to STTH2L06U's 85 ns, resulting in faster switching characteristics. Both maintain 600 V, 2 A ratings and DO-214AA SMB packaging. ER2J-LTP extends the maximum junction temperature to 175°C (matching STTH2L06U) and provides REACH Unaffected status. The trade-off is a higher forward voltage of 1.7 V @ 2 A versus 1.3 V @ 2 A.

Q: Can I use a 3 A rated diode (MURS360BT3G or ER3JB-TP) in place of the 2 A STTH2L06U?

A: Yes, from an electrical and mechanical standpoint. Both 3 A parts maintain the required 600 V reverse voltage and fit the same DO-214AA SMB package. The higher current rating provides design margin and does not create incompatibility. However, verify that the application circuit design does not depend on the specific current rating of the original part. MURS360BT3G offers superior reverse leakage current (3 µA vs. 2 µA) and lower forward voltage (1.25 V @ 3 A).

Q: Why should I avoid NRVUS360VBT3G?

A: NRVUS360VBT3G carries a "Not For New Designs" product status, indicating that the manufacturer recommends against its use in new circuit designs. While electrically compatible as a 600 V, 3 A part, this designation signals potential obsolescence or limited future availability. This part is suitable only for maintaining existing designs or automotive applications requiring AEC-Q101 qualification. For new designs, select MURS360BT3G or ER3JB-TP instead.

Q: What is the difference between ER2J and ER2J-LTP?

A: Both parts are 600 V, 2 A general-purpose rectifier diodes in DO-214AA SMB packages from Micro Commercial Co. ER2J-LTP offers superior reverse recovery time of 35 ns versus ER2J's 75 ns, enabling faster switching. ER2J-LTP extends the maximum junction temperature to 175°C compared to ER2J's 150°C and provides a wider operating temperature range (-65°C to 175°C vs. -50°C to 150°C). Both have identical forward voltage (1.7 V @ 2 A) and reverse leakage current (5 µA @ 600 V).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed in this reference, including the main part STTH2L06U and all substitutes, are RoHS3 compliant. All parts also carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating they can be stored and handled without special moisture control measures.

Q: Can I use MURS160T3G or MURS160-13-F as replacements?

A: These parts are rated for only 1 A average rectified current, compared to STTH2L06U's 2 A rating. They are suitable only for applications with current requirements below 2 A. Using a 1 A part in a 2 A application will result in component overstress and potential failure. These parts should be selected only when the application circuit has been redesigned or verified to operate at 1 A or below.

Q: What packaging options are available for these substitute parts?

A: All parts listed are available in surface mount DO-214AA SMB packages. Packaging formats vary between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) configurations. Verify the specific packaging format required for your assembly process before final part selection. The SMB package designation remains consistent across all parts, ensuring mechanical compatibility.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage (Vf) differences directly impact power dissipation and voltage drop across the diode during conduction. STTH2L06U specifies 1.3 V @ 2 A, while MURS260T3G specifies 1.45 V @ 2 A—a 0.15 V increase. In high-current or thermally sensitive applications, this difference may affect heat generation and circuit efficiency. Conversely, ER2J-LTP and MURS360BT3G specify 1.7 V and 1.25 V respectively, representing trade-offs between switching speed and forward voltage characteristics. Evaluate the specific application requirements before selecting based on forward voltage alone.

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