STPR1620CT Equivalent & Substitute Parts

Part Overview

The STPR1620CT is a diode array rectifier manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode design rated for 200 V DC reverse voltage and 8 A average rectified current per diode. The component is housed in a TO-220-3 through-hole package and features fast recovery characteristics with a 30 ns reverse recovery time. The STPR1620CT is classified as obsolete, necessitating identification of functionally equivalent active alternatives for new designs and ongoing production requirements.

Key Parameters

Parameter	STPR1620CT Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io) (per Diode)	8	A
Voltage - Forward (Vf) (Max) @ If	990 mV @ 8 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	30	ns
Current - Reverse Leakage @ Vr	50	µA @ 200 V
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the STPR1620CT is determined by the following critical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode (electrical interface requirement)
Voltage - DC Reverse (Vr) (Max): 200 V (minimum voltage rating)
Mounting Type: Through Hole (mechanical interface requirement)
Package / Case: TO-220-3 (physical form factor requirement)

Secondary Compatibility Parameters:

Current - Average Rectified (Io) (per Diode): Equal to or greater than 8 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Technology: Standard or Schottky (both acceptable for general-purpose rectification)

Substitute parts must satisfy all primary criteria and maintain compatibility with secondary parameters. Parts with higher current ratings, lower forward voltage, or improved reverse recovery characteristics are acceptable as direct replacements. Parts with different diode configurations, lower voltage ratings, or incompatible package types are not suitable substitutes.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) [mV]	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Technology	Product Status
STPR1620CT	STMicroelectronics	200	8	990 @ 8A	30	50 @ 200V	150	Standard	Obsolete
STTH1602CT	STMicroelectronics	200	10	1100 @ 8A	26	6 @ 200V	175	Standard	Active
BYQ30E-200,127	WeEn Semiconductors	200	16	1250 @ 16A	25	30 @ 200V	150	Standard	Active
BYV32-200G	onsemi	200	8	1150 @ 20A	35	50 @ 200V	175	Standard	Active
DPG20C200PB	IXYS	200	10	1270 @ 10A	35	1 @ 200V	175	Standard	Active
MUR1620CT-BP	Micro Commercial Co	200	16	975 @ 8A	35	5 @ 200V	150	Standard	Active
MUR1620CTG	onsemi	200	8	975 @ 8A	35	5 @ 200V	175	Standard	Active
SDUR1620CT	SMC Diode Solutions	200	—	1200 @ 8A	—	5 @ 200V	150	Schottky	Active
SF1004GHC0G	Taiwan Semiconductor Corporation	200	10	975 @ 5A	35	10 @ 200V	150	Standard	Active

Engineering Selection Recommendations

Direct Replacement (Equivalent Current Rating):

The MUR1620CTG manufactured by onsemi provides the closest electrical equivalence to the STPR1620CT. Both components are rated for 8 A average rectified current per diode at 200 V reverse voltage with identical forward voltage characteristics (975 mV @ 8 A). The MUR1620CTG is active in production, ROHS3 compliant, and features an extended operating temperature range (-65°C to 175°C) compared to the STPR1620CT (maximum 150°C). The reverse recovery time is slightly longer (35 ns versus 30 ns), and reverse leakage current is significantly lower (5 µA versus 50 µA), both favorable characteristics for reliability.

The BYV32-200G from onsemi also matches the 8 A current rating and 200 V voltage specification. This component is part of the SWITCHMODE™ series and offers comparable performance with a 35 ns reverse recovery time and identical reverse leakage current specification.

Higher Current Rating Alternatives:

For applications where increased current capacity is acceptable, the STTH1602CT (STMicroelectronics, 10 A), DPG20C200PB (IXYS, 10 A), and SF1004GHC0G (Taiwan Semiconductor Corporation, 10 A) provide 25% higher current ratings while maintaining 200 V voltage specification and TO-220-3 packaging. These components are suitable for designs with thermal margin or where future current requirements may increase.

The BYQ30E-200,127 (WeEn Semiconductors) and MUR1620CT-BP (Micro Commercial Co) offer 16 A current ratings, providing 100% higher current capacity. These components are appropriate for applications requiring significant thermal headroom or where component consolidation across multiple current levels is desired.

Schottky Technology Alternative:

The SDUR1620CT from SMC Diode Solutions represents a Schottky diode array alternative. Schottky technology provides lower forward voltage drop (1.2 V @ 8 A) compared to standard rectifier diodes, reducing power dissipation in high-frequency switching applications. However, Schottky diodes exhibit higher reverse leakage current and lower maximum junction temperature ratings. The SDUR1620CT is suitable only for applications where the lower forward voltage benefit justifies the trade-offs in leakage current and thermal performance.

Compliance and Availability:

All recommended substitute parts are ROHS3 compliant and REACH unaffected. The MUR1620CTG and BYV32-200G offer the highest inventory availability (91,202 and 50,950 units respectively), ensuring supply chain continuity. The STTH1602CT provides an alternative from the original manufacturer (STMicroelectronics) with active product status and substantial inventory (44,200 units).

Frequently Asked Questions (FAQ)

Q: Can the STPR1620CT be replaced with a higher current-rated diode such as the BYQ30E-200,127 (16 A)?

A: Yes. The BYQ30E-200,127 maintains the same 200 V reverse voltage rating, 1 Pair Common Cathode configuration, and TO-220-3 package. The higher 16 A current rating is a superset of the 8 A requirement and does not create incompatibility. The component will operate within specification in any circuit designed for the STPR1620CT.

Q: What is the difference between the MUR1620CTG and the STTH1602CT as replacements?

A: Both are active alternatives with 200 V ratings and TO-220-3 packaging. The MUR1620CTG matches the original 8 A current rating with identical forward voltage (975 mV @ 8 A). The STTH1602CT provides 10 A current capacity with slightly higher forward voltage (1.1 V @ 8 A) and lower reverse leakage (6 µA versus 5 µA). The STTH1602CT offers a higher maximum junction temperature (175°C versus 175°C for MUR1620CTG). Selection depends on whether the additional current capacity of the STTH1602CT is beneficial for the application.

Q: Is the SDUR1620CT (Schottky) a suitable replacement for the STPR1620CT (Standard)?

A: The SDUR1620CT is electrically compatible in terms of voltage rating, configuration, and package. However, Schottky diodes exhibit fundamentally different characteristics: lower forward voltage drop (1.2 V @ 8 A versus 990 mV @ 8 A for the original) and higher reverse leakage current. Schottky technology is beneficial in high-frequency switching applications where forward voltage drop dominates power loss. For general-purpose rectification at lower frequencies, standard rectifier diodes are typically preferred. Substitution with SDUR1620CT requires circuit analysis to confirm performance improvement.

Q: Can I use the SF1004GHC0G as a replacement if my application requires automotive qualification?

A: Yes. The SF1004GHC0G is AEC-Q101 qualified and rated for automotive applications. It provides 10 A current capacity, 200 V reverse voltage, and TO-220-3 packaging. The component is ROHS3 compliant and suitable for automotive-grade designs. The forward voltage specification (975 mV @ 5 A) is comparable to the STPR1620CT, and the reverse recovery time (35 ns) is acceptable for standard rectification circuits.

Q: What is the impact of reverse recovery time differences between substitute parts?

A: Reverse recovery time (trr) affects switching speed and electromagnetic interference (EMI) characteristics. The STPR1620CT specifies 30 ns. Substitute parts range from 25 ns (BYQ30E-200,127) to 35 ns (BYV32-200G, DPG20C200PB, MUR1620CT-BP, MUR1620CTG, SF1004GHC0G). Faster recovery times (lower trr values) reduce switching losses and EMI in high-frequency applications. For standard 50/60 Hz rectification, differences within this range are negligible. For switching frequencies above 10 kHz, verify that the substitute part's trr specification meets circuit requirements.

Q: Are all substitute parts available in the same TO-220-3 package?

A: Yes. All substitute parts listed are housed in TO-220-3 through-hole packages. Some manufacturers designate the package as TO-220 or TO-220AB, which are equivalent designations for the same physical form factor. Pin configuration and mounting footprint are identical across all listed alternatives, enabling direct mechanical substitution without PCB redesign.

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

A: Reverse leakage current (Ir) affects power dissipation and circuit performance at maximum reverse voltage. The STPR1620CT specifies 50 µA @ 200 V. Substitute parts range from 1 µA (DPG20C200PB) to 50 µA (BYV32-200G). Lower leakage current reduces standby power consumption and improves circuit efficiency. For most general-purpose rectification applications, this difference is minor. For precision analog circuits or battery-powered systems, lower leakage current (DPG20C200PB at 1 µA) provides measurable benefit.

Q: Can I mix different substitute parts in the same circuit?

A: Yes, provided all parts meet the circuit's minimum electrical requirements (200 V reverse voltage, 8 A or greater current rating, fast recovery speed, and 1 Pair Common Cathode configuration). Mixing parts with different forward voltage or reverse leakage characteristics may result in unequal current distribution in parallel configurations. For series or single-diode applications, mixing is acceptable. For parallel diode arrays, use identical part numbers to ensure balanced current sharing.

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