STTH602CFP Equivalent & Substitute Parts

Part Overview

The STTH602CFP is a diode array rectifier manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode with 200 V reverse voltage rating and 3 A average rectified current per diode. The device is packaged in TO-220-3 Full Pack through-hole format and features fast recovery characteristics with 30 ns reverse recovery time.

The STTH602CFP is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array configuration.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io) (per Diode)	3	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A	—
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	—
Reverse Recovery Time (trr)	30	ns
Current - Reverse Leakage @ Vr	3	µA @ 200 V
Operating Temperature - Junction (Max)	175	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3 Full Pack	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the STTH602CFP is determined by the following critical parameters:

Mandatory Matching Criteria:

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

Current Rating Consideration: The STTH602CFP operates at 3 A average rectified current per diode. Substitute parts with equal or higher current ratings (3 A, 5 A, 8 A, or 10 A) are functionally compatible, as they provide equivalent or superior current handling capability within the same voltage and package constraints.

Technology Variants: Substitute parts may employ different diode technologies (Standard, Super Barrier, or Avalanche) while maintaining the same electrical performance envelope. Technology differences do not preclude substitution when voltage, current, and package specifications align.

Compliance and Status: All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence with the original part.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) [V]	trr [ns]	Tj (Max) [°C]	Package	Status
STTH602CFP	STMicroelectronics	200	3	1.1 @ 3 A	30	175	TO-220-3 Full Pack	Obsolete
RF601T2D	Rohm Semiconductor	200	3	0.93 @ 3 A	25	150	TO-220-3 Full Pack	Active
RF1001T2D	Rohm Semiconductor	200	5	0.93 @ 5 A	30	150	TO-220-3 Full Pack	Active
RF1601T2D	Rohm Semiconductor	200	8	0.93 @ 8 A	30	150	TO-220-3 Full Pack	Active
SBR10200CTFP	Diodes Incorporated	200	5	0.9 @ 5 A	20	150	TO-220-3 Full Pack, Isolated Tab	Active
SBR20A200CTFP	Diodes Incorporated	200	10	0.86 @ 10 A	30	175	TO-220-3 Full Pack, Isolated Tab	Active
MURF1620CTG	onsemi	200	8	0.975 @ 8 A	35	150	TO-220-3 Full Pack	Active
FFPF20UP20DNTU	onsemi	200	10	1.15 @ 10 A	45	150	TO-220-3 Full Pack	Obsolete

Engineering Selection Recommendations

Direct Equivalent (Matched Current Rating): RF601T2D is the primary equivalent substitute for STTH602CFP. Both devices operate at 3 A average rectified current with 200 V reverse voltage rating in TO-220-3 Full Pack configuration. RF601T2D is active product status, ensuring long-term availability and supply chain support.

Higher Current Rating Substitutes (Uprating): RF1001T2D (5 A), RF1601T2D (8 A), SBR10200CTFP (5 A), SBR20A200CTFP (10 A), and MURF1620CTG (8 A) provide increased current capacity while maintaining 200 V voltage rating and through-hole TO-220-3 packaging. These parts are suitable for applications where current margin or design flexibility is required. All listed higher-current substitutes maintain active product status.

Compliance Alignment: All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original STTH602CFP. Moisture Sensitivity Level (MSL) varies between parts; RF601T2D, RF1001T2D, and RF1601T2D maintain MSL 1 (Unlimited) classification consistent with the original part.

Package Consideration: SBR10200CTFP and SBR20A200CTFP feature isolated tab configuration (ITO-220AB) versus standard TO-220-3 Full Pack. Isolated tab design provides electrical isolation between the tab and the diode cathode, which may be required in specific thermal management or safety-critical applications. Standard TO-220-3 Full Pack alternatives (RF601T2D, RF1001T2D, RF1601T2D, MURF1620CTG) maintain direct mechanical and electrical compatibility without tab isolation.

Frequently Asked Questions (FAQ)

Q: Can RF601T2D directly replace STTH602CFP without circuit modification?

A: Yes. RF601T2D is a direct equivalent substitute. Both devices share identical diode configuration (1 Pair Common Cathode), voltage rating (200 V), current rating (3 A), and package format (TO-220-3 Full Pack). RF601T2D is active product status, providing superior supply chain continuity compared to the obsolete STTH602CFP.

Q: What is the difference between standard TO-220-3 Full Pack and isolated tab (ITO-220AB) packages?

A: Standard TO-220-3 Full Pack (RF601T2D, RF1001T2D, RF1601T2D, MURF1620CTG) features a conductive tab electrically connected to the diode cathode. Isolated tab configuration (SBR10200CTFP, SBR20A200CTFP) electrically isolates the tab from the cathode, enabling independent thermal management without affecting circuit operation. Isolated tab design is required in applications where the mounting surface must be isolated from the diode cathode potential.

Q: Can I use a higher current-rated substitute such as RF1601T2D (8 A) in place of STTH602CFP (3 A)?

A: Yes. Higher current-rated substitutes are functionally compatible when voltage rating, diode configuration, and package format remain constant. RF1601T2D operates at 8 A average rectified current, providing increased current margin and design flexibility. The circuit will operate within the electrical envelope of the substitute part. No circuit modification is required.

Q: What is the significance of reverse recovery time (trr) differences between substitute parts?

A: Reverse recovery time affects switching speed and switching losses in rectifier applications. STTH602CFP specifies 30 ns trr. Substitute parts range from 20 ns (SBR10200CTFP) to 45 ns (FFPF20UP20DNTU). Faster recovery times (20–30 ns) reduce switching losses and heat generation. Slower recovery times (35–45 ns) are acceptable in applications where switching frequency is low or switching losses are not critical. Selection depends on application-specific thermal and efficiency requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (RF601T2D, RF1001T2D, RF1601T2D, SBR10200CTFP, SBR20A200CTFP, MURF1620CTG, FFPF20UP20DNTU) are ROHS3 compliant and REACH unaffected, matching the regulatory status of STTH602CFP.

Q: What is the difference between Standard, Super Barrier, and Avalanche diode technologies in these substitutes?

A: Technology classification reflects internal diode structure and performance characteristics. Standard technology (RF601T2D, RF1001T2D, RF1601T2D, MURF1620CTG) provides baseline rectification performance. Super Barrier technology (SBR10200CTFP, SBR20A200CTFP) reduces forward voltage drop and reverse recovery time, improving efficiency. Avalanche technology (FFPF20UP20DNTU) provides additional overvoltage protection. All three technologies are functionally compatible within the specified voltage and current envelope. Technology selection depends on application-specific efficiency and protection requirements.

Q: Which substitute part offers the lowest forward voltage drop?

A: SBR20A200CTFP specifies 0.86 V forward voltage drop at 10 A, the lowest among listed substitutes. SBR10200CTFP specifies 0.9 V at 5 A. Lower forward voltage drop reduces power dissipation and heat generation, improving overall circuit efficiency. Selection of low-Vf parts is beneficial in high-current or thermally constrained applications.

Q: Is FFPF20UP20DNTU a suitable substitute despite being classified as obsolete?

A: FFPF20UP20DNTU meets all electrical and mechanical substitution criteria (200 V, 10 A, TO-220-3 Full Pack, 1 Pair Common Cathode configuration). However, obsolete product status indicates limited or discontinued manufacturing. Active product alternatives (RF1601T2D, SBR20A200CTFP, MURF1620CTG) are preferred for new designs and ongoing production to ensure long-term supply chain availability.

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