RD0106T-TL-H Equivalent & Substitute Parts

Part Overview

The RD0106T-TL-H is a general-purpose rectifier diode manufactured by onsemi, rated for 600 V DC reverse voltage and 1 A average rectified current. This component is classified as obsolete, indicating that onsemi has discontinued production. The part is housed in a TO-252-3 DPAK surface mount package with two leads and a tab (SC-63).

Due to the obsolete status of the RD0106T-TL-H, equivalent substitute parts are necessary for ongoing design support, production continuity, and component sourcing. Substitute diodes must maintain electrical compatibility within the application's voltage and current requirements while meeting the same package and mounting specifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	50	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
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the RD0106T-TL-H are selected based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Mandatory Compatibility Parameters:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
Mounting Type: Must be Surface Mount
Package / Case: Must be TO-252-3, DPAK (2 Leads + Tab), SC-63
Speed Classification: Must be Fast Recovery ≤ 500ns, > 200mA (Io)
Moisture Sensitivity Level (MSL): Must be 1 (Unlimited)

Current Rating Consideration: Substitute diodes may have current ratings equal to or greater than 1 A average rectified current. Higher current ratings provide design margin and do not compromise circuit function when the application current demand is 1 A or less.

Forward Voltage and Reverse Leakage: Substitute parts may exhibit forward voltage and reverse leakage characteristics within the range of provided specifications. These parameters do not restrict substitution when the electrical design accommodates the specified values.

Parameter Comparison

Parameter	RD0106T-TL-H (onsemi)	RFN3BGE6STL (Rohm)	STTH506B-TR (STMicroelectronics)
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V
Current - Average Rectified (Io)	1 A	3 A	5 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.55 V @ 3 A	1.85 V @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns	30 ns	50 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V	10 µA @ 600 V	5 µA @ 600 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Operating Temperature - Junction (Max)	150°C	150°C	175°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

RFN3BGE6STL (Rohm Semiconductor)

The RFN3BGE6STL is an active product with 600 V reverse voltage rating and 3 A average rectified current capacity. This part meets all mandatory compatibility parameters: identical package (TO-252-3 DPAK SC-63), surface mount mounting type, fast recovery speed classification, and MSL 1 rating. The part is RoHS3 compliant and REACH unaffected. The 3 A current rating provides design margin above the 1 A requirement of the RD0106T-TL-H. Reverse recovery time of 30 ns is superior to the original specification. This substitute is suitable for direct replacement in applications where the 1 A current demand is maintained.

STTH506B-TR (STMicroelectronics)

The STTH506B-TR is an active product with 600 V reverse voltage rating and 5 A average rectified current capacity. This part meets all mandatory compatibility parameters: identical package (TO-252-3 DPAK SC-63), surface mount mounting type, fast recovery speed classification, and MSL 1 rating. The part is RoHS3 compliant. The 5 A current rating provides substantial design margin. Operating temperature maximum of 175°C exceeds the original 150°C specification. Reverse recovery time of 50 ns matches the original specification. This substitute is suitable for direct replacement in applications where the 1 A current demand is maintained.

Both substitute parts are active products with established supply chains, ensuring long-term component availability compared to the obsolete RD0106T-TL-H.

Frequently Asked Questions (FAQ)

Q: Can the RFN3BGE6STL or STTH506B-TR be used as direct replacements for the RD0106T-TL-H?

A: Both substitute parts are electrically and mechanically compatible with the RD0106T-TL-H. They share identical package specifications (TO-252-3 DPAK SC-63), voltage ratings (600 V), and fast recovery speed classification. The higher current ratings (3 A and 5 A respectively) do not prevent substitution when the application current requirement is 1 A or less.

Q: What is the significance of the higher current ratings on the substitute parts?

A: The RFN3BGE6STL (3 A) and STTH506B-TR (5 A) have current ratings higher than the original RD0106T-TL-H (1 A). In applications where the actual current demand is 1 A, the higher-rated substitutes operate within their safe operating region and provide design margin. No circuit modification is required.

Q: Are there differences in forward voltage between the main part and substitutes?

A: Forward voltage varies with current level. The RD0106T-TL-H specifies 1.3 V @ 1 A, while the RFN3BGE6STL specifies 1.55 V @ 3 A and the STTH506B-TR specifies 1.85 V @ 5 A. When operating at 1 A, the actual forward voltage of the substitute parts will differ from the specified values at their rated currents. Circuit designs must accommodate the forward voltage characteristics of the selected substitute.

Q: What is the difference in reverse recovery time between the parts?

A: The RD0106T-TL-H and STTH506B-TR both specify 50 ns reverse recovery time. The RFN3BGE6STL specifies 30 ns, which is faster. Faster reverse recovery time reduces switching losses in high-frequency applications. This characteristic does not prevent substitution.

Q: Are both substitute parts compliant with environmental regulations?

A: The RFN3BGE6STL is RoHS3 compliant and REACH unaffected. The STTH506B-TR is RoHS3 compliant. Both parts are REACH unaffected. All three parts (original and substitutes) are classified as ECCN EAR99 and HTSUS 8541.10.0080.

Q: What is the MSL rating and why does it matter?

A: All three parts carry MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture absorption concerns. This classification ensures consistent handling and storage requirements across the original and substitute parts.

Q: Can the STTH506B-TR be used in place of the RFN3BGE6STL?

A: Yes. Both parts meet the same mandatory compatibility criteria for substitution of the RD0106T-TL-H. The STTH506B-TR offers a higher current rating (5 A vs. 3 A) and higher maximum junction temperature (175°C vs. 150°C), providing additional design margin in some applications.

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