STTH152RL Equivalent & Substitute Parts

Part Overview

The STTH152RL is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 200 V DC reverse voltage and 1.5 A average rectified current in a DO-15 axial through-hole package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating package and mounting variations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1.5 A	mV
Reverse Recovery Time (trr)	32	ns
Current - Reverse Leakage @ Vr	1.5	µA @ 200 V
Operating Temperature - Junction (Max)	175	°C
Mounting Type	Through Hole	-
Package / Case	DO-204AC, DO-15, Axial	-
Technology	Standard	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the STTH152RL are selected based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 1.5 A minimum
Operating Temperature - Junction: 175°C maximum or higher
Technology: Standard rectifier diode technology

Mechanical Parameters:

Mounting Type: Through Hole
Package / Case: DO-15 (DO-204AC) or DO-41 (DO-204AL) axial packages
RoHS Compliance: ROHS3 Compliant

Secondary Considerations:

Reverse Recovery Time (trr): Fast recovery (≤500 ns) preferred for performance optimization
Forward Voltage (Vf): Lower values indicate improved efficiency
Reverse Leakage Current: Lower values indicate superior performance

Substitute parts are grouped into two categories: direct package equivalents (DO-15) and package-compatible alternatives (DO-41), both maintaining the required electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1.5A [mV]	trr [ns]	Ir @ 200V [µA]	Tj (Max) [°C]	Package	Product Status
STTH152RL	STMicroelectronics	200	1.5	950	32	1.5	175	DO-15	Obsolete
STTH1R02	STMicroelectronics	200	1.5	1000	30	3	175	DO-41	Active
1N5393-E3/54	Vishay General Semiconductor	200	1.5	1400	2000	5	150	DO-41	Active
FR153GP-AP	Micro Commercial Co	200	1.5	1300	150	5	150	DO-15	Active
GP15D-E3/54	Vishay General Semiconductor	200	1.5	1100	3500	5	175	DO-15	Active
GP15D-E3/73	Vishay General Semiconductor	200	1.5	1100	3500	5	175	DO-15	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

GP15D-E3/54 and GP15D-E3/73 (Vishay General Semiconductor) are the preferred direct substitutes for STTH152RL. Both parts maintain identical electrical specifications (200 V, 1.5 A, 175°C maximum junction temperature) and preserve the DO-15 package form factor. These parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating. The GP15D series is designated as SUPERECTIFIER® technology, providing proven reliability in production environments.

Secondary Substitutes (Package-Compatible Alternatives):

STTH1R02 (STMicroelectronics) provides an active alternative from the original manufacturer with equivalent electrical performance (200 V, 1.5 A, 175°C). This part uses the DO-41 package, which is mechanically compatible with through-hole PCB designs but requires board layout modification. The STTH1R02 offers superior reverse recovery time (30 ns) compared to the original STTH152RL (32 ns).

FR153GP-AP (Micro Commercial Co) is an active DO-15 package equivalent with matching voltage and current ratings. Operating temperature is limited to 150°C maximum, which is acceptable for applications not requiring the full 175°C thermal headroom of the original part.

1N5393-E3/54 (Vishay General Semiconductor) is an active DO-41 package alternative with 200 V and 1.5 A ratings. This part operates at a maximum junction temperature of 150°C and exhibits standard recovery characteristics (2 µs), making it suitable for non-critical switching applications. Forward voltage is elevated at 1.4 V, resulting in higher power dissipation compared to fast-recovery alternatives.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification consistent with the original STTH152RL. Moisture sensitivity level is 1 (unlimited) across all alternatives, eliminating special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can STTH1R02 replace STTH152RL in existing PCB designs without modification?

A: STTH1R02 uses the DO-41 package while STTH152RL uses DO-15. Both are axial through-hole packages with identical lead spacing (0.4 inches), allowing direct insertion into existing PCB holes. However, the physical package dimensions differ, which may affect board layout aesthetics and thermal management. Electrical performance is fully compatible.

Q: What is the difference between fast recovery and standard recovery diodes in these substitutes?

A: Fast recovery diodes (STTH152RL, STTH1R02, FR153GP-AP) have reverse recovery times ≤500 ns, suitable for high-frequency switching applications. Standard recovery diodes (1N5393-E3/54, GP15D series) have reverse recovery times >500 ns, appropriate for low-frequency rectification. Selection depends on circuit switching frequency requirements.

Q: Are GP15D-E3/54 and GP15D-E3/73 interchangeable?

A: Yes. Both parts are electrically and mechanically identical, with identical part specifications across all parameters. The difference in part number suffix (-E3/54 versus -E3/73) reflects different packaging or distribution channels from Vishay, not functional differences.

Q: Does forward voltage difference affect circuit performance?

A: Forward voltage variations (950 mV to 1400 mV at 1.5 A) directly impact power dissipation and voltage drop across the diode. In low-voltage circuits or high-current applications, higher forward voltage increases heat generation. STTH152RL (950 mV) and STTH1R02 (1000 mV) offer the lowest forward voltage, while 1N5393-E3/54 (1400 mV) exhibits the highest. Selection should account for thermal budget and voltage regulation requirements.

Q: Can I use a 150°C rated diode in place of a 175°C rated diode?

A: Substitution is acceptable only if the application's maximum junction temperature does not exceed 150°C. Verify that circuit design, ambient temperature, and thermal management ensure the diode junction remains below this limit. For designs requiring full 175°C headroom, use GP15D-E3/54, GP15D-E3/73, or STTH1R02.

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

A: Reverse leakage current (1.5 µA to 5 µA at 200 V) represents the small current flowing through the diode in reverse bias. Lower leakage indicates superior blocking characteristics and reduced power loss in standby conditions. STTH152RL (1.5 µA) has the lowest leakage; all active substitutes exhibit 3–5 µA, which is acceptable for general-purpose rectification.

Q: Are all substitute parts suitable for high-temperature applications?

A: GP15D-E3/54, GP15D-E3/73, and STTH1R02 support 175°C maximum junction temperature, matching the original STTH152RL. FR153GP-AP and 1N5393-E3/54 are limited to 150°C, restricting use in high-temperature environments. Verify application thermal requirements before selection.

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