STTH1202FP Equivalent & Substitute Parts

Part Overview

The STTH1202FP is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 200 V DC reverse voltage and 12 A average rectified current in a Through Hole TO-220FPAC package. This component is classified as Obsolete, indicating discontinuation from the manufacturer. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for applications utilizing this diode.

Substiute Parts

STTH1202FP

STMicroelectronicsIn Stock: 2272STTH1202FP Datasheet

Current PartRFQ

STTH1202D

STMicroelectronicsIn Stock: 1165STTH1202D Datasheet

SimilarRFQ

FESF16DTHE3_A/P

Vishay General Semiconductor - Diodes DivisionIn Stock: 772FESF16DTHE3_A/P Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTH1202FP is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
• Current - Average Rectified (Io): Must equal or exceed 12 A
• Voltage - Forward (Vf) (Max) @ If: Must not exceed 1.1 V at rated current
• Reverse Recovery Time (trr): Must equal or be faster than 35 ns
• Current - Reverse Leakage @ Vr: Must not exceed 10 µA @ 200 V
• Speed Classification: Must maintain Fast Recovery characteristics

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole required
• Package / Case: TO-220 family packages acceptable
• Operating Temperature - Junction: Must support 175°C maximum

Compliance Criteria:

• RoHS Status: ROHS3 Compliant required
• Moisture Sensitivity Level (MSL): Level 1 required

Two substitute parts meet these criteria and are listed below.

Parameter Comparison

Engineering Selection Recommendations

STTH1202D (STMicroelectronics)

The STTH1202D is an Active product from the same manufacturer as the obsolete STTH1202FP. Electrical parameters are identical across all critical specifications: 200 V reverse voltage, 12 A average rectified current, 1.1 V forward voltage at 12 A, and 35 ns reverse recovery time. The primary difference is the package variant: STTH1202D uses TO-220AC (standard tab) versus STTH1202FP's TO-220FPAC (full pack). Both packages are Through Hole TO-220-2 configurations with identical electrical performance. STTH1202D maintains ROHS3 compliance, MSL Level 1, and 175°C maximum junction temperature. This part is the direct electrical equivalent with minimal package differentiation.

FESF16DTHE3_A/P (Vishay General Semiconductor - Diodes Division)

The FESF16DTHE3_A/P is an Active product with higher current rating (16 A versus 12 A) and improved forward voltage characteristics (975 mV @ 16 A versus 1.1 V @ 12 A). Reverse voltage (200 V) and reverse recovery time (35 ns) are identical. This part qualifies as an electrical upgrade substitute, providing enhanced current capacity and lower forward voltage drop. The package is ITO-220AC (isolated tab), a Through Hole TO-220-2 variant with isolated tab configuration. FESF16DTHE3_A/P carries Automotive grade qualification (AEC-Q101) and ROHS3 compliance. Operating temperature maximum is 150°C, which is 25°C lower than the main part. This part is suitable for applications where higher current margin or lower forward voltage is beneficial, provided the 150°C junction temperature limit is acceptable.

Frequently Asked Questions (FAQ)

Q: Can STTH1202D directly replace STTH1202FP in existing designs?

A: STTH1202D is electrically identical to STTH1202FP across all critical parameters. The primary difference is the package variant: TO-220AC (standard tab) versus TO-220FPAC (full pack). Both are Through Hole TO-220-2 configurations. Physical mounting compatibility depends on the specific PCB layout and whether the full pack or standard tab configuration is required. Verify package footprint compatibility before substitution.

Q: What is the difference between TO-220FPAC and TO-220AC packages?

A: TO-220FPAC denotes a full pack configuration, while TO-220AC denotes a standard tab configuration. Both are Through Hole TO-220-2 packages with identical electrical performance. The difference is mechanical: full pack provides a larger mounting surface, while standard tab is a conventional configuration. Selection depends on PCB design requirements and thermal management considerations.

Q: Can FESF16DTHE3_A/P be used as a substitute for STTH1202FP?

A: FESF16DTHE3_A/P meets all electrical compatibility criteria and exceeds the current rating (16 A versus 12 A). However, the operating temperature maximum is 150°C compared to 175°C for STTH1202FP. Substitution is valid if the application's maximum junction temperature does not exceed 150°C. The higher current rating and lower forward voltage provide design margin in applications with variable load conditions.

Q: What does ITO-220AC package designation mean?

A: ITO-220AC denotes an isolated tab TO-220 package. The "I" prefix indicates electrical isolation of the tab from the semiconductor die, which is useful in applications requiring isolation between the mounting surface and the diode's electrical circuit. This differs from standard TO-220AC where the tab is electrically connected to one terminal.

Q: Are all three parts RoHS3 compliant?

A: Yes. STTH1202FP, STTH1202D, and FESF16DTHE3_A/P are all ROHS3 Compliant with MSL Level 1 (Unlimited moisture sensitivity). All parts are suitable for applications with RoHS compliance requirements.

Q: What is the significance of AEC-Q101 qualification on FESF16DTHE3_A/P?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. FESF16DTHE3_A/P carries this qualification, indicating it meets automotive reliability and performance standards. This qualification is not present on STTH1202FP or STTH1202D. Selection of FESF16DTHE3_A/P is appropriate for automotive applications requiring AEC-Q101 qualified components.

Q: How do reverse recovery times compare across the three parts?

A: All three parts have identical reverse recovery time (trr) of 35 ns, confirming equivalent Fast Recovery diode performance. This parameter is critical for switching applications and power supply designs. No performance differentiation exists on this specification.

Q: What is the current inventory status for these parts?

A: STTH1202FP (Obsolete): 2200 Pcs New Original In Stock. STTH1202D (Active): 1140 Pcs New Original In Stock. FESF16DTHE3_A/P (Active): 738 Pcs New Original In Stock. Inventory levels are subject to change; verify current availability with supplier.