STTH1R06RL Equivalent & Substitute Parts

Part Overview

The STTH1R06RL is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole package. This fast recovery diode is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical ratings, recovery characteristics, and mechanical compatibility to enable direct component selection in applications requiring 600 V, 1 A rectification with fast recovery performance.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 1 A	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	45	ns
Current - Reverse Leakage @ Vr	1	µA @ 600 V
Mounting Type	Through Hole	-
Package / Case	DO-204AL, DO-41, Axial	-
Operating Temperature - Junction (Max)	175	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the STTH1R06RL are grouped based on the following critical electrical and mechanical parameters:

Primary Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 1 A
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial

Secondary Matching Criteria:

Speed Classification: Fast Recovery (≤ 500ns, > 200mA) or Standard Recovery (>500ns, > 200mA)
Reverse Recovery Time (trr): Specified in nanoseconds
Forward Voltage (Vf): Maximum forward voltage drop at rated current
Reverse Leakage Current: Maximum reverse leakage at rated reverse voltage
Operating Temperature Range: Junction temperature capability
RoHS Compliance: ROHS3 Compliant status

Parts are classified as Parametric Equivalent when all electrical ratings and recovery characteristics match exactly. Parts are classified as Similar when voltage, current, and package specifications match but recovery speed, forward voltage, leakage current, or temperature range differ within acceptable engineering tolerances for general-purpose rectification applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Tj (Max) [°C]	Product Status	RoHS
STTH1R06RL	STMicroelectronics	600	1	1.7 @ 1 A	Fast Recovery ≤ 500ns	45	1 @ 600 V	DO-41	175	Active	ROHS3
STTH1R06	STMicroelectronics	600	1	1.7 @ 1 A	Fast Recovery ≤ 500ns	45	1 @ 600 V	DO-41	175	Active	ROHS3
1N4005-T	Diodes Incorporated	600	1	1 @ 1 A	Standard Recovery >500ns	-	5 @ 600 V	DO-41	150	Last Time Buy	ROHS3
1N4937-T	Diodes Incorporated	600	1	1.2 @ 1 A	Fast Recovery ≤ 500ns	200	5 @ 600 V	DO-41	150	Active	ROHS3
1N4937G	Taiwan Semiconductor Corporation	600	1	1.2 @ 1 A	Fast Recovery ≤ 500ns	200	5 @ 600 V	DO-204AL (DO-41)	150	Active	ROHS3
MUR160G	onsemi	600	1	1.25 @ 1 A	Fast Recovery ≤ 500ns	75	5 @ 600 V	Axial	175	Active	ROHS3
MUR160RLG	onsemi	600	1	1.25 @ 1 A	Fast Recovery ≤ 500ns	75	5 @ 600 V	Axial	175	Active	ROHS3
UF1005-T	Diodes Incorporated	600	1	1.7 @ 1 A	Fast Recovery ≤ 500ns	75	5 @ 600 V	DO-41	150	Active	ROHS3
UF4005	Fairchild Semiconductor	600	1	1.7 @ 1 A	Fast Recovery ≤ 500ns	75	5 @ 600 V	DO-41	175	Active	-

Engineering Selection Recommendations

Parametric Equivalent Selection: STTH1R06 is a parametric equivalent to STTH1R06RL with identical electrical specifications and fast recovery characteristics. Both parts are manufactured by STMicroelectronics, carry Active product status, and are ROHS3 compliant. Selection between these two parts depends on packaging format availability and inventory requirements.

Fast Recovery Substitute Selection: For applications requiring fast recovery performance (≤ 500ns) with 600 V, 1 A ratings, the following parts are suitable substitutes:

1N4937-T and 1N4937G: Both offer fast recovery characteristics with 200 ns reverse recovery time. 1N4937-T is manufactured by Diodes Incorporated with Active status. 1N4937G is manufactured by Taiwan Semiconductor Corporation with Active status. Both are ROHS3 compliant. Operating temperature range is -65°C to 150°C, which is lower than the STTH1R06RL maximum of 175°C.
MUR160G and MUR160RLG: Both are onsemi SWITCHMODE™ series fast recovery diodes with 75 ns reverse recovery time and 1.25 V forward voltage. Both carry Active product status and ROHS3 compliance. Operating temperature range extends to 175°C, matching the STTH1R06RL. Package format is Axial, requiring mechanical layout consideration.
UF1005-T and UF4005: Both offer fast recovery characteristics with 75 ns reverse recovery time and 1.7 V forward voltage matching the STTH1R06RL. UF1005-T is manufactured by Diodes Incorporated with Active status and ROHS3 compliance. UF4005 is manufactured by Fairchild Semiconductor with Active status. Operating temperature range for UF1005-T is -65°C to 150°C; for UF4005 is -50°C to 175°C.

Standard Recovery Alternative: 1N4005-T is a standard recovery diode (>500ns) with lower forward voltage (1 V) and higher reverse leakage (5 µA). This part carries Last Time Buy product status and is not recommended for new designs. It is suitable only for legacy system maintenance where recovery speed is not a critical parameter.

Product Status Consideration: All recommended substitutes carry Active product status except 1N4005-T, which is designated Last Time Buy. Active status parts are preferred for new designs and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can STTH1R06 be used as a direct replacement for STTH1R06RL?

A: Yes. STTH1R06 is a parametric equivalent with identical electrical specifications, recovery characteristics, and operating temperature range. Both are manufactured by STMicroelectronics and are ROHS3 compliant. Selection depends on packaging format and inventory availability.

Q: What is the primary difference between fast recovery and standard recovery diodes in this group?

A: Fast recovery diodes have reverse recovery time ≤ 500 ns, while standard recovery diodes exceed 500 ns. The STTH1R06RL has 45 ns reverse recovery time. Fast recovery diodes reduce switching losses and are suitable for high-frequency switching applications. The 1N4005-T is a standard recovery alternative with >500 ns recovery time and lower forward voltage but higher reverse leakage current.

Q: Are MUR160G and MUR160RLG interchangeable with STTH1R06RL?

A: MUR160G and MUR160RLG are electrically equivalent substitutes with matching 600 V, 1 A ratings and fast recovery characteristics. The primary difference is package format: MUR160 series uses Axial package, while STTH1R06RL uses DO-41 package. Mechanical layout and PCB footprint must be verified before substitution.

Q: What is the significance of reverse recovery time (trr) in selecting a substitute?

A: Reverse recovery time determines how quickly the diode transitions from forward conduction to reverse blocking. Lower trr values reduce switching losses and electromagnetic interference. STTH1R06RL has 45 ns trr. Substitutes with higher trr values (such as 1N4937-T at 200 ns) may increase switching losses but remain functionally compatible for general-purpose rectification.

Q: Can 1N4005-T be used as a substitute for STTH1R06RL?

A: 1N4005-T meets the 600 V, 1 A electrical requirements but uses standard recovery technology (>500ns) instead of fast recovery. It carries Last Time Buy product status, indicating discontinued production. It is not recommended for new designs. Use only for legacy system maintenance where recovery speed is not critical.

Q: What packaging considerations apply when substituting with MUR160RLG?

A: MUR160RLG uses Axial package format, while STTH1R06RL uses DO-41 package. Axial packages have leads extending from opposite ends of the component body, requiring different PCB footprints and mounting hole spacing. Mechanical layout verification is required before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts except UF4005 carry explicit ROHS3 compliance certification. UF4005 does not list RoHS status in the provided specifications. Verify RoHS compliance requirements for your application before selecting UF4005.

Q: What is the operating temperature range difference between STTH1R06RL and its substitutes?

A: STTH1R06RL operates to 175°C maximum junction temperature. Substitutes vary: 1N4937-T and 1N4937G operate to 150°C; UF1005-T operates to 150°C; MUR160G and MUR160RLG operate to 175°C; UF4005 operates to 175°C. Applications requiring operation near 175°C should use parts with matching temperature ratings.

Q: How does forward voltage (Vf) affect substitute selection?

A: Forward voltage determines voltage drop across the diode during conduction. STTH1R06RL has 1.7 V Vf @ 1 A. Substitutes range from 1 V (1N4005-T) to 1.7 V (UF1005-T, UF4005). Lower Vf reduces power dissipation; higher Vf increases heat generation. Select based on thermal design and efficiency requirements of the application.

Q: What is the significance of reverse leakage current (Ir) in this comparison?

A: Reverse leakage current represents unwanted current flow when the diode is reverse-biased. STTH1R06RL has 1 µA @ 600 V leakage. Most substitutes have 5 µA leakage. Higher leakage increases standby power consumption and heat generation. Applications with stringent leakage requirements should prioritize STTH1R06RL or STTH1R06.

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