STTH5R06D Equivalent & Substitute Parts

Part Overview

The STTH5R06D is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 5 A average rectified current in a Through Hole TO-220AC package. This diode is classified as a fast recovery device with a reverse recovery time of 40 ns and is designed for standard rectification applications requiring high voltage and moderate current handling. The part is Active in product status and fully RoHS3 compliant.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified voltage, current, and thermal operating ranges while maintaining compatible mechanical packaging and mounting characteristics.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	2.9 @ 5 A	V
Reverse Recovery Time (trr)	40	ns
Current - Reverse Leakage @ Vr	20	µA @ 600 V
Mounting Type	Through Hole	-
Package / Case	TO-220-2	-
Operating Temperature - Junction (Max)	175	°C
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-

Substitute Part Grouping Explanation

Substitution eligibility for the STTH5R06D is determined by the following critical parameters:

Voltage Compatibility: The DC reverse voltage rating must equal or exceed 600 V to maintain dielectric integrity in the application circuit.

Current Capacity: The average rectified current rating must equal or exceed 5 A to handle the specified load without thermal stress.

Package Compatibility: All substitute parts must use Through Hole mounting with TO-220-2 package configuration to ensure mechanical and thermal interface compatibility.

Speed Classification: All substitute parts must maintain Fast Recovery classification (≤ 500ns, > 200mA) to preserve switching characteristics in rectification circuits.

Forward Voltage: Forward voltage drop at rated current should remain within acceptable limits to minimize power dissipation variance.

Thermal Rating: Operating temperature junction rating influences thermal management requirements and long-term reliability.

Substitute parts are grouped into two categories:

Category A - Full Electrical Equivalents: Parts meeting or exceeding all critical parameters (600 V, 5 A or higher, Fast Recovery, TO-220AC package).

Category B - Reduced Current Equivalents: Parts meeting voltage and package requirements but with lower current ratings (3 A), suitable only for applications with reduced current demands.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Package
STTH5R06D	STMicroelectronics	600	5	2.9 @ 5 A	40	20 @ 600 V	175	TO-220-2
LXA06T600	Power Integrations	600	6	2.94 @ 6 A	23	250 @ 600 V	150	TO-220-2
BYC5-600,127	WeEn Semiconductors	500	5	2.9 @ 5 A	50	100 @ 600 V	150	TO-220-2
LQA03TC600	Power Integrations	600	3	3.1 @ 3 A	13	20 @ 600 V	150	TO-220-2
QH03TZ600	Power Integrations	600	3	3.0 @ 3 A	9.8	250 @ 600 V	150	TO-220-2
SDUR560	SMC Diode Solutions	600	-	1.55 @ 5 A	50	5 @ 600 V	150	TO-220-2

Engineering Selection Recommendations

Primary Substitute - LXA06T600 (Power Integrations):

The LXA06T600 provides full electrical equivalence with superior performance characteristics. It exceeds the 5 A current requirement at 6 A, maintains 600 V reverse voltage rating, and delivers improved reverse recovery time of 23 ns compared to the STTH5R06D at 40 ns. Forward voltage drop is comparable at 2.94 V @ 6 A. The part is RoHS Compliant, REACH Unaffected, and maintains Through Hole TO-220-2 package compatibility. The reduced junction temperature maximum of 150°C versus 175°C requires thermal design verification for high-ambient applications.

Secondary Substitute - BYC5-600,127 (WeEn Semiconductors):

The BYC5-600,127 matches the 5 A current rating and forward voltage characteristics of the STTH5R06D. However, the reverse voltage rating is reduced to 500 V, making this part suitable only for applications with maximum operating voltages below 500 V. The part is RoHS3 Compliant but REACH Affected. Reverse recovery time is 50 ns, slightly longer than the STTH5R06D. Through Hole TO-220-2 package compatibility is maintained.

Reduced Current Alternatives - LQA03TC600 and QH03TZ600 (Power Integrations):

Both parts are rated for 3 A average rectified current at 600 V reverse voltage. These are suitable only for applications with current demands of 3 A or less. LQA03TC600 offers reverse recovery time of 13 ns, while QH03TZ600 provides 9.8 ns. Both maintain 600 V voltage rating and TO-220-2 package compatibility. Forward voltage at 3 A is 3.1 V and 3.0 V respectively, representing increased drop compared to the STTH5R06D at 5 A operation.

Alternative - SDUR560 (SMC Diode Solutions):

The SDUR560 maintains 600 V reverse voltage and TO-220-2 package compatibility with forward voltage of 1.55 V @ 5 A, indicating superior forward conduction characteristics. However, average rectified current rating is not specified in available documentation, limiting definitive current capacity assessment. Reverse recovery time is 50 ns. The part is RoHS3 Compliant but REACH Affected.

Frequently Asked Questions (FAQ)

Q: Can the LXA06T600 directly replace the STTH5R06D in all applications?

A: The LXA06T600 provides electrical equivalence with enhanced current capacity (6 A versus 5 A) and improved reverse recovery time (23 ns versus 40 ns). The reduced maximum junction temperature (150°C versus 175°C) requires verification that thermal design accommodates this lower rating. Mechanical package compatibility (TO-220-2) is identical.

Q: Is the BYC5-600,127 suitable for 600 V applications?

A: No. The BYC5-600,127 is rated for maximum 500 V reverse voltage. It is suitable only for applications with peak reverse voltages not exceeding 500 V. Using this part in a 600 V circuit exceeds its voltage rating and creates reliability risk.

Q: What is the significance of the 3 A current rating in LQA03TC600 and QH03TZ600?

A: These parts are rated for 3 A average rectified current, which is 60% of the STTH5R06D rating. They are suitable only for applications with current demands of 3 A or less. Exceeding this rating causes thermal stress and reduced component life.

Q: Why does SDUR560 show lower forward voltage than other substitutes?

A: The SDUR560 exhibits forward voltage of 1.55 V @ 5 A, which is lower than the STTH5R06D at 2.9 V @ 5 A. This represents superior forward conduction efficiency and reduced power dissipation. However, the unspecified average rectified current rating prevents full electrical equivalence confirmation.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts listed use Through Hole mounting with TO-220-2 package configuration, ensuring mechanical and thermal interface compatibility with the STTH5R06D footprint.

Q: What compliance differences exist between substitute parts?

A: The STTH5R06D and LXA06T600 are REACH Unaffected. The BYC5-600,127 and SDUR560 are REACH Affected. All listed parts are RoHS3 Compliant or RoHS Compliant. Regulatory requirements for the application determine which compliance status is acceptable.

Q: How does reverse recovery time affect circuit performance?

A: Reverse recovery time (trr) determines the speed at which the diode transitions from conducting to blocking state. The STTH5R06D at 40 ns is slower than LXA06T600 at 23 ns or QH03TZ600 at 9.8 ns. Faster recovery reduces switching losses and improves efficiency in high-frequency rectification circuits. Slower recovery (50 ns in BYC5-600,127 and SDUR560) is acceptable in lower-frequency applications.

Q: Can reverse leakage current differences impact circuit design?

A: Reverse leakage current varies significantly among substitutes, ranging from 5 µA (SDUR560) to 250 µA (LXA06T600 and QH03TZ600). Higher leakage increases standby power consumption and heat generation. The STTH5R06D at 20 µA represents moderate leakage. Applications with stringent standby power requirements should prioritize lower leakage alternatives.

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