STTH110RL Equivalent & Substitute Parts

Part Overview

The STTH110RL is a general-purpose fast recovery rectifier diode manufactured by STMicroelectronics, rated for 1000 V DC reverse voltage and 1 A average rectified current. The device is packaged in DO-41 (DO-204AL) axial through-hole configuration and is classified as Active product status with ROHS3 compliance. This diode is designed for applications requiring fast switching characteristics with a reverse recovery time of 75 nanoseconds, making it suitable for power supply circuits, converter applications, and general rectification tasks. Equivalent and substitute parts are identified based on matching electrical performance parameters and compatible mechanical packaging within the through-hole rectifier diode category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 1 A	V
Reverse Recovery Time (trr)	75	ns
Current - Reverse Leakage @ Vr	10	µA @ 1000 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
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 STTH110RL are classified into two categories based on electrical parameter alignment:

Parametric Equivalent: Parts that match all critical electrical specifications including reverse voltage rating (1000 V), average rectified current (1 A), forward voltage drop (1.7 V @ 1 A), and reverse recovery time (75 ns). These parts are direct functional replacements with identical performance characteristics.

Similar Parts: Parts that maintain the same voltage and current ratings but may differ in secondary parameters such as reverse recovery time (up to 100 ns), reverse leakage current (5 µA versus 10 µA), operating temperature range, or capacitance specifications. These parts are suitable for applications where the primary electrical requirements are met, though performance characteristics may vary slightly.

Substitution eligibility is determined by:

Voltage - DC Reverse (Vr) rating of 1000 V or higher
Current - Average Rectified (Io) rating of 1 A or higher
Fast recovery speed classification (≤ 500ns, > 200mA)
Through-hole mounting configuration
DO-41 or compatible axial package format
Active product status
ROHS3 compliance

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Package	Tj (Max) [°C]	RoHS Status	Inventory [Pcs]
STTH110RL	STMicroelectronics	1000	1	1.7 @ 1 A	75	10 @ 1000 V	DO-41	175	ROHS3	5564
STTH110	STMicroelectronics	1000	1	1.7 @ 1 A	75	10 @ 1000 V	DO-41	175	ROHS3	52288
UF1007-T	Diodes Incorporated	1000	1	1.7 @ 1 A	75	5 @ 1000 V	DO-41	150	ROHS3	5359
UF4007-E3/54	Vishay General Semiconductor - Diodes Division	1000	1	1.7 @ 1 A	75	10 @ 1000 V	DO-204AL (DO-41)	150	ROHS3	38100
UF4007-M3/73	Vishay General Semiconductor - Diodes Division	1000	1	1.7 @ 1 A	75	10 @ 1000 V	DO-204AL (DO-41)	150	ROHS3	5469
UF4007GP-TP	Micro Commercial Co	1000	1	1.7 @ 1 A	75	5 @ 1000 V	DO-41	150	ROHS3	40927
UF4007	Diotec Semiconductor	1000	1	1.7 @ 1 A	75	5 @ 1000 V	DO-41/DO-204AC	175	ROHS3	41532
UF1006-T	Diodes Incorporated	800	1	1.7 @ 1 A	75	5 @ 800 V	DO-41	150	ROHS3	1600
MUR1100ERLG	onsemi	1000	1	1.75 @ 1 A	100	10 @ 1000 V	Axial	175	ROHS3	35100

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent):

STTH110 is the parametric equivalent to STTH110RL, offering identical electrical specifications and performance characteristics. Both devices are manufactured by STMicroelectronics with ROHS3 compliance and Active product status. STTH110 is available in higher inventory quantity (52,288 pieces) compared to STTH110RL (5,564 pieces), making it a preferred alternative for high-volume applications.

Primary Substitute Options (1000 V, 1 A Rating):

UF4007-E3/54 and UF4007-M3/73 (Vishay General Semiconductor - Diodes Division) maintain identical electrical performance with 1000 V reverse voltage, 1 A current rating, 1.7 V forward voltage drop, and 75 ns reverse recovery time. Both variants are ROHS3 compliant and Active status. UF4007-E3/54 offers higher inventory availability (38,100 pieces).

UF4007GP-TP (Micro Commercial Co) provides equivalent electrical specifications with 1000 V rating, 1 A current, 75 ns recovery time, and ROHS3 compliance. Inventory availability is 40,927 pieces.

UF4007 (Diotec Semiconductor) matches all critical electrical parameters with 1000 V reverse voltage, 1 A current, 1.7 V forward voltage, and 75 ns recovery time. Operating temperature maximum of 175°C aligns with STTH110RL. Inventory is 41,532 pieces.

UF1007-T (Diodes Incorporated) provides 1000 V reverse voltage, 1 A current, 1.7 V forward voltage, and 75 ns recovery time with ROHS3 compliance. Operating temperature maximum is 150°C. Inventory is 5,359 pieces.

Secondary Substitute Option (Voltage Derating):

UF1006-T (Diodes Incorporated) is suitable for applications where 800 V reverse voltage rating is acceptable. This device maintains 1 A current rating, 1.7 V forward voltage drop, and 75 ns recovery time. Use of this part requires confirmation that circuit maximum reverse voltage does not exceed 800 V.

Alternative with Modified Recovery Characteristics:

MUR1100ERLG (onsemi) provides 1000 V reverse voltage and 1 A current rating with ROHS3 compliance and Active status. Reverse recovery time is 100 ns (compared to 75 ns for STTH110RL), and forward voltage is 1.75 V @ 1 A. This part is suitable for applications where slightly longer recovery time is acceptable. Inventory is 35,100 pieces.

All recommended substitutes maintain through-hole mounting configuration, fast recovery speed classification, and ROHS3 environmental compliance.

Frequently Asked Questions (FAQ)

Q: Can STTH110 be used as a direct replacement for STTH110RL?

A: Yes. STTH110 is the parametric equivalent with identical electrical specifications: 1000 V reverse voltage, 1 A average rectified current, 1.7 V forward voltage drop @ 1 A, and 75 ns reverse recovery time. Both are manufactured by STMicroelectronics with ROHS3 compliance and Active product status.

Q: What is the primary difference between STTH110RL and UF1007-T?

A: Both devices share identical electrical ratings (1000 V, 1 A, 1.7 V forward voltage, 75 ns recovery time). The primary differences are manufacturer (STMicroelectronics versus Diodes Incorporated), operating temperature maximum (175°C versus 150°C), and reverse leakage current specification (10 µA versus 5 µA @ 1000 V). UF1007-T is suitable for applications within the 150°C junction temperature limit.

Q: Is UF1006-T compatible with STTH110RL applications?

A: UF1006-T is compatible only for applications where the maximum reverse voltage does not exceed 800 V. The device maintains 1 A current rating, 1.7 V forward voltage drop, and 75 ns recovery time. Circuit design review is required to confirm voltage derating is acceptable.

Q: What are the packaging differences among substitute parts?

A: All substitute parts are through-hole mounted in axial configuration. STTH110RL, STTH110, UF1007-T, UF4007GP-TP, and UF1006-T use DO-41 package. UF4007-E3/54 and UF4007-M3/73 use DO-204AL (DO-41 equivalent). UF4007 is available in DO-41/DO-204AC. MUR1100ERLG uses Axial package. All are mechanically compatible for through-hole PCB mounting.

Q: Why does MUR1100ERLG have 100 ns reverse recovery time instead of 75 ns?

A: MUR1100ERLG is manufactured by onsemi using different semiconductor technology within the fast recovery classification (≤ 500ns, > 200mA). The 100 ns recovery time remains within fast recovery specifications and is suitable for applications where this performance level is acceptable. Forward voltage is also slightly higher at 1.75 V @ 1 A.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the environmental compliance requirement of STTH110RL.

Q: What inventory considerations should guide part selection?

A: STTH110 offers the highest inventory availability (52,288 pieces), followed by UF4007 (41,532 pieces) and UF4007GP-TP (40,927 pieces). STTH110RL current inventory is 5,564 pieces. For high-volume production, STTH110 is the preferred equivalent. For lower-volume applications, UF4007 variants provide adequate availability with equivalent electrical performance.

Q: Can reverse recovery time differences affect circuit performance?

A: Reverse recovery time differences between 75 ns and 100 ns may affect switching frequency performance in high-speed converter applications. STTH110RL, STTH110, UF1007-T, UF4007 variants, and UF1006-T all specify 75 ns recovery time. MUR1100ERLG with 100 ns recovery time is suitable for applications where this specification is within design margins.

Q: What is the significance of reverse leakage current specifications?

A: STTH110RL specifies 10 µA @ 1000 V reverse leakage. UF1007-T, UF4007, and UF4007GP-TP specify 5 µA @ 1000 V. Lower leakage current may provide improved performance in high-impedance circuits or precision applications. Both specifications are within acceptable ranges for general-purpose rectification.

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