UD0506T-TL-H Equivalent & Substitute Parts

Part Overview

The UD0506T-TL-H is a general-purpose rectifier diode manufactured by onsemi, rated for 600 V DC reverse voltage and 5 A average rectified current in a surface mount TO-252-3 (DPAK) package. This component is classified as obsolete, indicating that onsemi has discontinued production. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 5 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	10	µA @ 600 V
Mounting Type	Surface Mount	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the UD0506T-TL-H are selected based on strict electrical and mechanical compatibility criteria. All substitute candidates must satisfy the following parameters:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 5 A or greater
Mounting Type: Surface Mount
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Technology: Standard

Allowable Variations:

Voltage - Forward (Vf) (Max) @ If: Substitute parts may exhibit forward voltage values between 1.3 V and 2.02 V at rated current without compromising circuit functionality
Reverse Recovery Time (trr): Substitute parts may range from 20 ns to 150 ns, with faster recovery times providing improved switching performance
Current - Reverse Leakage @ Vr: Substitute parts may range from 5 µA to 50 µA at 600 V without affecting circuit operation
Operating Temperature - Junction (Max): Substitute parts rated at 150°C or higher are acceptable
RoHS and REACH Compliance: All substitute parts must maintain ROHS3 compliance; REACH status variations are acceptable

Substitute parts are organized into two categories: direct substitutes (matching all critical parameters) and parametric equivalents (meeting all critical parameters with allowable variations in secondary electrical characteristics).

Parameter Comparison

Parameter	UD0506T-TL-H (onsemi)	STTH5L06B-TR (STMicroelectronics)	STTH506B-TR (STMicroelectronics)	VS-5EWH06FN-M3 (Vishay)	RFNL5BGE6STL (Rohm)	RFNL5BM6SFHTL (Rohm)	BYV25D-600,118 (WeEn)	DSEP6-06AS-TRL (IXYS)
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	5 A	5 A	5 A	5 A	5 A	5 A	5 A	6 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 5 A	1.3 V @ 5 A	1.85 V @ 5 A	1.85 V @ 5 A	1.3 V @ 5 A	1.3 V @ 5 A	1.3 V @ 5 A	2.02 V @ 6 A
Reverse Recovery Time (trr)	150 ns	95 ns	50 ns	25 ns	60 ns	60 ns	60 ns	20 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V	50 µA @ 600 V	50 µA @ 600 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Operating Temperature - Junction (Max)	150°C	175°C	175°C	175°C	150°C	150°C	150°C	175°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

Primary Substitute Candidates (Direct Electrical Match):

STTH5L06B-TR (STMicroelectronics) and RFNL5BGE6STL (Rohm Semiconductor) are the preferred substitutes for the UD0506T-TL-H. Both parts maintain identical forward voltage characteristics (1.3 V @ 5 A), matching the original specification exactly. Both are active products with ROHS3 compliance and MSL 1 ratings. STTH5L06B-TR offers improved reverse recovery time (95 ns versus 150 ns), while RFNL5BGE6STL maintains the original reverse recovery time specification (60 ns). Both support surface mount assembly in the identical TO-252-3 DPAK package.

Secondary Substitute Candidates (Acceptable Electrical Variation):

RFNL5BM6SFHTL (Rohm Semiconductor) is electrically identical to RFNL5BGE6STL but includes automotive-grade qualification (AEC-Q101). This part is suitable for applications requiring automotive compliance. VS-5EWH06FN-M3 (Vishay) and STTH506B-TR (STMicroelectronics) exhibit higher forward voltage (1.85 V @ 5 A) but offer significantly faster reverse recovery times (25 ns and 50 ns respectively), making them suitable for high-frequency switching applications where the forward voltage increase is acceptable.

Tertiary Substitute Candidates (Extended Current Rating):

DSEP6-06AS-TRL (IXYS) provides a 6 A current rating with identical 600 V voltage specification, offering design margin for applications approaching the 5 A limit. This part exhibits the fastest reverse recovery time (20 ns) among all candidates. However, forward voltage is elevated to 2.02 V @ 6 A, and MSL rating is 3 (168 Hours), requiring controlled storage conditions.

Parametric Equivalent (Acceptable Variation):

BYV25D-600,118 (WeEn Semiconductors) matches all critical electrical parameters with identical forward voltage (1.3 V @ 5 A) and acceptable reverse recovery time (60 ns). However, reverse leakage current is elevated to 50 µA @ 600 V (versus 10 µA in the original), and REACH status is affected. This part is suitable for applications where leakage current is not a limiting factor.

Recommendation Priority:

STTH5L06B-TR for improved performance with identical electrical characteristics
RFNL5BGE6STL for direct specification match with high inventory availability
RFNL5BM6SFHTL for automotive applications requiring AEC-Q101 qualification
VS-5EWH06FN-M3 or STTH506B-TR for high-frequency switching applications
DSEP6-06AS-TRL for applications requiring extended current margin

Frequently Asked Questions (FAQ)

Q: Can STTH5L06B-TR directly replace UD0506T-TL-H without circuit modification?

A: Yes. STTH5L06B-TR maintains identical voltage ratings (600 V), current rating (5 A), forward voltage (1.3 V @ 5 A), and package configuration (TO-252-3 DPAK). The improved reverse recovery time (95 ns versus 150 ns) provides enhanced switching performance without requiring design changes.

Q: What is the difference between RFNL5BGE6STL and RFNL5BM6SFHTL?

A: Both parts are electrically identical with matching voltage, current, forward voltage, and reverse recovery time specifications. RFNL5BM6SFHTL includes automotive-grade qualification (AEC-Q101) and is designated for automotive applications. RFNL5BGE6STL is the standard industrial version. Selection depends on application requirements.

Q: Why does DSEP6-06AS-TRL have a higher forward voltage (2.02 V) than the original part?

A: DSEP6-06AS-TRL is rated for 6 A average rectified current, compared to 5 A for the UD0506T-TL-H. Forward voltage specifications are measured at rated current; the higher voltage reflects operation at the higher current level. At 5 A operation, forward voltage would be lower than the specified 2.02 V @ 6 A value.

Q: Is the MSL 3 rating of DSEP6-06AS-TRL a concern?

A: MSL 3 (168 Hours) requires controlled storage conditions and limits shelf life compared to MSL 1 (Unlimited). For applications with standard warehouse storage and handling procedures, MSL 1 parts (STTH5L06B-TR, RFNL5BGE6STL, RFNL5BM6SFHTL, VS-5EWH06FN-M3, BYV25D-600,118) are preferred. DSEP6-06AS-TRL is suitable only if moisture control procedures are implemented.

Q: Can I use VS-5EWH06FN-M3 in a circuit designed for UD0506T-TL-H?

A: VS-5EWH06FN-M3 is electrically compatible with identical voltage and current ratings. However, forward voltage is 1.85 V @ 5 A versus 1.3 V in the original design. This 0.55 V increase results in higher power dissipation and heat generation. Circuit thermal analysis is required to confirm acceptability. The significantly faster reverse recovery time (25 ns) benefits high-frequency switching applications.

Q: What is the significance of reverse recovery time differences?

A: Reverse recovery time (trr) affects switching speed and electromagnetic interference (EMI) characteristics. Faster recovery times (20–50 ns) reduce switching losses and EMI in high-frequency applications. Slower recovery times (95–150 ns) are acceptable in low-frequency rectification circuits. Selection depends on operating frequency and EMI requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Seven of eight substitute parts are ROHS3 compliant. BYV25D-600,118 is RoHS compliant but not specifically ROHS3 certified. For applications requiring ROHS3 compliance, use STTH5L06B-TR, STTH506B-TR, VS-5EWH06FN-M3, RFNL5BGE6STL, RFNL5BM6SFHTL, or DSEP6-06AS-TRL.

Q: Can I use a substitute part with higher operating temperature rating?

A: Yes. Substitute parts rated for 175°C maximum junction temperature (STTH5L06B-TR, STTH506B-TR, VS-5EWH06FN-M3, DSEP6-06AS-TRL) provide extended thermal margin compared to the original 150°C rating. This allows operation in higher ambient temperature environments without exceeding junction temperature limits.

Q: What inventory considerations apply to these substitute parts?

A: STTH5L06B-TR has the highest inventory availability (50,200 pcs), followed by RFNL5BGE6STL (10,300 pcs) and DSEP6-06AS-TRL (5,266 pcs). For long-term supply security, STTH5L06B-TR and RFNL5BGE6STL are recommended due to high stock levels and active product status.

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