STTH1302CFP Equivalent & Substitute Parts

Part Overview

The STTH1302CFP is a diode array rectifier manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode with 200 V reverse voltage rating and 6.5 A average rectified current per diode. The device is packaged in TO-220-3 Full Pack through-hole configuration and features fast recovery characteristics with 25 ns reverse recovery time.

This part is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where the original part is no longer manufactured or stocked.

Substiute Parts

STTH1302CFP

STMicroelectronicsIn Stock: 2431STTH1302CFP Datasheet

Current PartRFQ

FFPF20UP20DNTU

onsemiIn Stock: 3315FFPF20UP20DNTU Datasheet

SimilarRFQ

MURF1620CTG

onsemiIn Stock: 17223MURF1620CTG Datasheet

SimilarRFQ

RF1001T2D

Rohm SemiconductorIn Stock: 10394RF1001T2D Datasheet

SimilarRFQ

RF1601T2D

Rohm SemiconductorIn Stock: 2124RF1601T2D Datasheet

SimilarRFQ

RF601T2D

Rohm SemiconductorIn Stock: 3412RF601T2D Datasheet

SimilarRFQ

SBR10200CTFP

Diodes IncorporatedIn Stock: 20754SBR10200CTFP Datasheet

SimilarRFQ

SBR20A200CTFP

Diodes IncorporatedIn Stock: 27041SBR20A200CTFP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTH1302CFP is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Diode Configuration: 1 Pair Common Cathode (mandatory match)
• Voltage - DC Reverse (Vr) (Max): 200 V (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Package / Case: TO-220-3 Full Pack (mandatory match)

Secondary Compatibility Parameters:

• Current - Average Rectified (Io) (per Diode): Substitute must equal or exceed 6.5 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory match)
• Reverse Recovery Time (trr): Substitute must equal or be lower than 25 ns
• Voltage - Forward (Vf) (Max) @ If: Lower or equal values indicate improved performance
• Operating Temperature - Junction: Substitute must support minimum 175°C operation

Substitute parts are grouped by current rating capability. Parts rated at 6.5 A or higher with matching voltage, configuration, and package specifications are direct functional equivalents. Parts with higher current ratings provide design margin and are acceptable substitutes provided all other parameters remain compatible.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MURF1620CTG

The MURF1620CTG is the preferred substitute for the STTH1302CFP. This part is manufactured by onsemi and carries Active product status, ensuring long-term availability and supply chain stability. The MURF1620CTG exceeds the current requirement (8 A versus 6.5 A), providing design margin for thermal and electrical stress. The device maintains the same 200 V reverse voltage rating, TO-220-3 Full Pack configuration, and fast recovery speed classification. Forward voltage is lower (0.975 V @ 8 A), indicating improved efficiency. The part is ROHS3 compliant and carries the SWITCHMODE™ series designation, indicating qualification for switching power supply applications.

Secondary Recommendation: SBR20A200CTFP

The SBR20A200CTFP manufactured by Diodes Incorporated is an alternative substitute with Active product status. This part provides the highest current rating (10 A) and matches the maximum junction temperature of the original part (175°C). The Super Barrier technology delivers the lowest forward voltage (0.86 V @ 10 A), resulting in superior thermal performance. The isolated tab package variant (ITO-220AB) provides additional design flexibility for thermal management. ROHS3 compliance and extended temperature range (-65°C to 175°C) support demanding applications.

Tertiary Recommendation: RF1601T2D

The RF1601T2D manufactured by Rohm Semiconductor is an Active product with 8 A current rating and 200 V reverse voltage matching. This part maintains compatibility with the original TO-220-3 Full Pack configuration and provides equivalent reverse recovery time (30 ns). The part is ROHS3 compliant with unlimited moisture sensitivity level, suitable for standard manufacturing environments.

Not Recommended: RF1001T2D and RF601T2D

These Rohm Semiconductor parts have current ratings below the original specification (5 A and 3 A respectively) and do not provide adequate design margin for the 6.5 A requirement of the STTH1302CFP.

Not Recommended: FFPF20UP20DNTU

Although this onsemi part provides 10 A current capability, it carries Obsolete product status, negating the primary benefit of substitution. The reverse recovery time (45 ns) exceeds the original specification, and forward voltage is higher (1.15 V @ 10 A).

Frequently Asked Questions (FAQ)

Q: Can the MURF1620CTG directly replace the STTH1302CFP in existing designs?

A: Yes. The MURF1620CTG maintains identical diode configuration (1 Pair Common Cathode), reverse voltage rating (200 V), mounting type (Through Hole), and package format (TO-220-3 Full Pack). The higher current rating (8 A versus 6.5 A) and lower forward voltage provide improved performance margins without design modification.

Q: What is the difference between TO-220-3 Full Pack and ITO-220AB packaging?

A: Both are through-hole TO-220 packages with three leads. The ITO-220AB variant used in SBR20A200CTFP includes an isolated tab, providing electrical isolation between the mounting tab and the circuit. Standard TO-220-3 Full Pack does not provide this isolation. Selection depends on thermal management and grounding requirements in the target application.

Q: Why do some substitute parts have lower maximum junction temperatures than the original?

A: The STTH1302CFP specifies 175°C maximum junction temperature, while several substitutes (MURF1620CTG, RF1601T2D, SBR10200CTFP) specify 150°C. These parts remain suitable for applications operating below 150°C. For designs requiring operation above 150°C, select SBR20A200CTFP, which matches the 175°C specification.

Q: What does "Fast Recovery ≤ 500ns, > 200mA (Io)" mean?

A: This classification indicates the diode exhibits fast recovery characteristics with reverse recovery time not exceeding 500 nanoseconds at reverse currents greater than 200 milliamps. All substitute parts listed maintain this fast recovery classification, ensuring compatibility with switching power supply and high-frequency rectification applications.

Q: Are there differences in forward voltage between substitute parts?

A: Yes. Forward voltage varies by technology and current rating. The SBR20A200CTFP (Super Barrier technology) exhibits the lowest forward voltage (0.86 V @ 10 A), while the FFPF20UP20DNTU (Avalanche technology) exhibits the highest (1.15 V @ 10 A). Lower forward voltage reduces power dissipation and improves efficiency. Selection should consider thermal budget and efficiency requirements.

Q: Can I use a substitute part with lower current rating than the original?

A: No. The RF1001T2D (5 A) and RF601T2D (3 A) have current ratings below the original 6.5 A specification and do not provide adequate design margin. Using an undersized part risks thermal stress, reduced reliability, and potential failure under normal operating conditions.

Q: What is the significance of "Obsolete" versus "Active" product status?

A: Active products are currently manufactured and supported by the supplier, ensuring long-term availability, consistent quality, and technical support. Obsolete products are no longer manufactured and may have limited remaining inventory. For new designs and long-term production, Active products are strongly preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, meeting environmental and hazardous substance restrictions for electronic components in regulated markets.