STTA806D Equivalent & Substitute Parts

Part Overview

The STTA806D is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 8 A average rectified current in a TO-220AC through-hole package. This device is part of the TURBOSWITCH™ series and features fast recovery characteristics with a reverse recovery time of 52 ns. The STTA806D is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

STTA806D

STMicroelectronicsIn Stock: 4598STTA806D Datasheet

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STTH8L06D

STMicroelectronicsIn Stock: 1431STTH8L06D Datasheet

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STTH8R06D

STMicroelectronicsIn Stock: 65384STTH8R06D Datasheet

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BYR29-600,127

WeEn SemiconductorsIn Stock: 783BYR29-600,127 Datasheet

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MUR860-BP

Micro Commercial CoIn Stock: 26854MUR860-BP Datasheet

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SDUR860

SMC Diode SolutionsIn Stock: 1777SDUR860 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTA806D is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 8 A
• Mounting Type: Through Hole
• Package / Case: TO-220-2
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Substitute parts may vary within the fast recovery diode specification range
• Reverse Recovery Time (trr): Substitute parts may vary within the fast recovery classification
• Current - Reverse Leakage @ Vr: Substitute parts may vary; lower leakage is acceptable
• Operating Temperature - Junction (Max): Substitute parts rated at 150°C or higher are acceptable

All identified substitute parts meet the mandatory matching parameters. Variations in forward voltage, reverse recovery time, and reverse leakage current remain within acceptable ranges for general-purpose rectification applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance):

STTH8L06D and STTH8R06D are both active STMicroelectronics products with ROHS3 compliance. STTH8L06D offers the lowest forward voltage (1.3 V @ 8 A) and reduced reverse leakage (8 µA @ 600 V), with an elevated maximum junction temperature of 175°C. STTH8R06D provides the fastest reverse recovery time (45 ns) and lowest reverse leakage (30 µA @ 600 V), also rated to 175°C.

BYR29-600,127 from WeEn Semiconductors is an active product with RoHS compliance, forward voltage of 1.5 V @ 8 A, and reverse recovery time of 75 ns. Operating temperature maximum is 150°C, matching the STTA806D specification.

MUR860-BP from Micro Commercial Co is an active product with the lowest reverse leakage current (5 µA @ 600 V) and reverse recovery time of 50 ns. Operating temperature range is specified as −55°C to 150°C.

SDUR860 from SMC Diode Solutions is an active product with ROHS3 compliance. Forward voltage is 1.7 V @ 8 A and reverse recovery time is 50 ns. Operating temperature range is −55°C to 150°C. Current - Average Rectified (Io) is not specified in available data.

Compliance Considerations:

All substitute parts maintain the mandatory electrical parameters (600 V, 8 A, TO-220-2, fast recovery). The STTA806D is obsolete; all identified substitutes are active products. RoHS and REACH compliance status varies by manufacturer and should be verified against specific procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can STTH8L06D directly replace STTA806D in all applications?

A: STTH8L06D meets all mandatory electrical parameters: 600 V reverse voltage, 8 A average rectified current, TO-220-2 package, and fast recovery classification. Forward voltage is lower (1.3 V vs. 1.75 V), reverse leakage is lower (8 µA vs. 100 µA), and maximum junction temperature is higher (175°C vs. 150°C). These characteristics are compatible with applications designed for the STTA806D.

Q: What is the significance of reverse recovery time variation among substitutes?

A: All substitute parts maintain fast recovery classification (≤ 500 ns, > 200 mA). Reverse recovery times range from 45 ns (STTH8R06D) to 105 ns (STTH8L06D). Shorter reverse recovery times reduce switching losses in high-frequency applications. The STTA806D specifies 52 ns; substitutes with comparable or faster recovery times (MUR860-BP at 50 ns, STTH8R06D at 45 ns, SDUR860 at 50 ns) are directly compatible.

Q: Are there packaging differences between substitute parts?

A: All substitute parts use TO-220-2 through-hole packages, identical to the STTA806D. Packaging variations (Tube, Bulk) refer to supplier packaging for procurement and do not affect electrical or mechanical compatibility in circuit applications.

Q: Why does SDUR860 not specify Current - Average Rectified (Io)?

A: SDUR860 data provided does not include explicit Io specification. However, it is listed as a substitute for the STTA806D and maintains 600 V reverse voltage rating and TO-220-2 package. Verification of 8 A current rating through the manufacturer datasheet is required before selection.

Q: Which substitute offers the best performance for low-leakage applications?

A: MUR860-BP and SDUR860 both specify 5 µA reverse leakage current at 600 V, compared to 100 µA for the STTA806D. STTH8L06D specifies 8 µA. These lower leakage values are suitable for applications requiring minimal standby current.

Q: Are all substitutes RoHS compliant?

A: STTH8L06D, STTH8R06D, BYR29-600,127, and SDUR860 are confirmed RoHS compliant (ROHS3 or RoHS). MUR860-BP compliance status is not specified in provided data. REACH status varies: STMicroelectronics and MUR860-BP are REACH Unaffected; SDUR860 is REACH Affected. Verify compliance requirements for your specific application and procurement standards.