STPR1020CB-TR Equivalent & Substitute Parts

Part Overview

The STPR1020CB-TR is a general-purpose diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode with 200 V reverse voltage rating and 5 A average rectified current per diode. The device is housed in a TO-252-3 DPAK surface mount package with fast recovery characteristics (≤500 ns). This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, production continuity, and system maintenance.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io) (per Diode)	5	A
Voltage - Forward (Vf) (Max) @ If	990 mV @ 5 A	—
Speed Classification	Fast Recovery ≤500 ns, >200 mA (Io)	—
Reverse Recovery Time (trr)	30	ns
Current - Reverse Leakage @ Vr	50	µA @ 200 V
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the STPR1020CB-TR is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Diode configuration (1 Pair Common Cathode)
Voltage rating (200 V DC reverse minimum)
Current rating (5 A average rectified per diode minimum)
Package type (TO-252-3 DPAK)
Speed classification (Fast Recovery ≤500 ns)
Surface mount technology

Substitution Categories:

Direct Equivalent (Preferred): Parts that match or exceed all critical parameters while maintaining identical or superior electrical performance. The STTH1002CB-TR qualifies as a direct equivalent, offering higher current capacity (8 A), improved reverse recovery time (25 ns), and active product status.

Functional Equivalent (Current-Limited): Parts that match voltage, package, and configuration but operate at reduced current ratings (3 A). These include MSRD620CTG, MSRD620CTT4G, and SBR6200CTL-13. These are suitable for applications where the 5 A requirement can be reduced to 3 A without system impact.

Functional Equivalent (Current-Matched): Parts that match voltage, package, configuration, and current rating (5 A) but employ alternative diode technology (Super Barrier). The SBR10200CTL-13 represents this category with comparable forward voltage and operating temperature range.

Partial Compatibility (Single Diode): The SDURD1020 and SDURD1020CT are single-diode or diode-array alternatives with matching voltage and package specifications but incomplete current rating data in the provided parameters.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) [mV]	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Technology	Status
STPR1020CB-TR	STMicroelectronics	200	5	990 @ 5A	30	50 @ 200V	150	Standard	Obsolete
STTH1002CB-TR	STMicroelectronics	200	8	1100 @ 5A	25	5 @ 200V	175	Standard	Active
MSRD620CTG	onsemi	200	3	1150 @ 3A	55	5 @ 200V	175	Standard	Obsolete
MSRD620CTT4G	onsemi	200	3	1150 @ 3A	55	5 @ 200V	175	Standard	Active
SBR10200CTL-13	Diodes Incorporated	200	5	940 @ 5A	—	100 @ 200V	150	Super Barrier	Active
SBR6200CTL-13	Diodes Incorporated	200	3	850 @ 3A	—	100 @ 200V	175	Super Barrier	Active
SDURD1020CT	SMC Diode Solutions	200	—	975 @ 5A	35	10 @ 200V	150	Standard	Active

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The STTH1002CB-TR from STMicroelectronics is the primary recommended substitute. It maintains the same manufacturer lineage, identical package specification (TO-252-3 DPAK), and common cathode configuration. The STTH1002CB-TR exceeds the original specification with 8 A current capacity versus 5 A, improved reverse recovery time (25 ns versus 30 ns), and significantly reduced reverse leakage current (5 µA versus 50 µA). The part carries active product status with AEC-Q101 automotive qualification and ROHS3 compliance, ensuring long-term availability and supply chain stability.

For Current-Constrained Applications (3 A Maximum):

The MSRD620CTT4G from onsemi is recommended for designs where the application current requirement does not exceed 3 A. This part maintains active product status, ROHS3 compliance, and identical package specifications. The MSRD620CTT4G is available in Tape & Reel packaging, matching the original STPR1020CB-TR format. The onsemi SWITCHMODE™ series provides proven reliability in switching applications.

For Improved Forward Voltage Performance:

The SBR10200CTL-13 from Diodes Incorporated offers superior forward voltage characteristics (940 mV @ 5 A versus 990 mV @ 5 A), reducing power dissipation in rectification circuits. This Super Barrier technology device maintains the 5 A current rating and 200 V voltage specification with active product status and ROHS3 compliance. The trade-off is higher reverse leakage current (100 µA versus 50 µA).

For Extended Temperature Range:

Both MSRD620CTT4G and SBR6200CTL-13 support maximum junction temperatures of 175°C, compared to the original 150°C specification. These parts are suitable for applications requiring enhanced thermal margin, though current ratings are reduced to 3 A.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status. The STTH1002CB-TR and MSRD620CTT4G carry active product status, ensuring continued manufacturing and supply availability. Parts with obsolete status (MSRD620CTG) should be avoided for new designs despite technical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the STTH1002CB-TR directly replace the STPR1020CB-TR without circuit modification?

A: Yes. The STTH1002CB-TR is a direct mechanical and electrical substitute. Both devices share identical package specifications (TO-252-3 DPAK), diode configuration (1 Pair Common Cathode), and voltage rating (200 V). The STTH1002CB-TR's higher current rating (8 A versus 5 A) and improved reverse recovery time (25 ns versus 30 ns) provide enhanced performance without requiring design changes. The lower reverse leakage current (5 µA versus 50 µA) may improve circuit performance in high-impedance applications.

Q: What is the impact of using a 3 A rated diode (MSRD620CTT4G) in a circuit designed for 5 A?

A: Using a 3 A rated device in a 5 A application exceeds the component's absolute maximum rating and will result in excessive junction temperature, accelerated aging, and potential device failure. The MSRD620CTT4G is suitable only for applications where the actual operating current does not exceed 3 A. Circuit redesign or current limiting is required if this part is selected.

Q: How do Super Barrier diodes (SBR series) differ from Standard technology diodes?

A: Super Barrier technology reduces forward voltage drop, resulting in lower power dissipation during conduction. The SBR10200CTL-13 exhibits 940 mV forward voltage at 5 A compared to 990 mV for the STPR1020CB-TR. The trade-off is higher reverse leakage current (100 µA versus 50 µA). Super Barrier devices are advantageous in high-current, low-voltage applications where efficiency is critical.

Q: Are there packaging differences between the STPR1020CB-TR and its substitutes?

A: All recommended substitutes use the TO-252-3 DPAK package specification. However, packaging format (Cut Tape, Tape & Reel, or Digi-Reel®) may differ. The STPR1020CB-TR is supplied in Tape & Reel format. The STTH1002CB-TR is available in Cut Tape & Digi-Reel® format. Verify packaging compatibility with your procurement and assembly processes before selection.

Q: Why is the STPR1020CB-TR classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and removed the part from active product lines. This classification necessitates identification of active alternatives to ensure long-term design support and supply chain continuity. The STTH1002CB-TR represents the recommended active alternative from the same manufacturer.

Q: Can I use SDURD1020CT as a substitute if current rating data is not provided?

A: The SDURD1020CT lacks specified average rectified current data in the provided parameters, creating uncertainty regarding its suitability for 5 A applications. While the part shares voltage rating (200 V) and package specification (TO-252-3 DPAK), the incomplete electrical specification prevents definitive substitution confirmation. Consult the manufacturer datasheet for complete current rating information before selection.

Q: What is the significance of reverse recovery time (trr) in diode selection?

A: Reverse recovery time determines how quickly a diode transitions from forward conduction to reverse blocking when the applied voltage reverses. Shorter trr values (25 ns for STTH1002CB-TR versus 30 ns for STPR1020CB-TR) reduce switching losses and electromagnetic interference in high-frequency applications. The STPR1020CB-TR's 30 ns specification qualifies as fast recovery (≤500 ns), as do all recommended substitutes.

Q: Are there temperature rating implications when selecting substitutes?

A: The STPR1020CB-TR operates to 150°C maximum junction temperature. The STTH1002CB-TR extends this to 175°C, providing additional thermal margin. The MSRD620CTT4G and SBR6200CTL-13 also support 175°C operation. For applications operating near thermal limits, selecting a substitute with higher temperature rating improves reliability margin. Conversely, if the original design operates well below 150°C, temperature rating differences are not critical.

Q: What compliance certifications should I verify for substitute parts?

A: All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original STPR1020CB-TR. The STTH1002CB-TR carries additional AEC-Q101 automotive qualification, indicating enhanced reliability screening and qualification for automotive applications. Verify compliance requirements specific to your application before final part selection.

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