STR5A453D Equivalent & Substitute Parts

Part Overview

The STR5A453D is an AC/DC converter integrated circuit manufactured by Sanken Electric USA Inc., classified as a Power Management (PMIC) component. This offline buck topology converter operates at 60kHz switching frequency and is housed in an 8-DIP through-hole package. The device is currently in active product status with 776 units in stock.

Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across manufacturing cycles. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

STR5A453D

Sanken Electric USA Inc.In Stock: 811STR5A453D Datasheet

Current PartRFQ

STR5A451D

Sanken Electric USA Inc.In Stock: 1126STR5A451D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the STR5A453D are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Topology: Buck
• Output Isolation: Non-Isolated
• Voltage - Breakdown: 650V
• Voltage - Supply (Vcc/Vdd): 8V ~ 32V
• Voltage - Start Up: 29V
• Duty Cycle: 62%
• Frequency - Switching: 60kHz
• Fault Protection: Current Limiting, Over Load, Over Temperature, Over Voltage
• Control Features: Soft Start
• Operating Temperature: -40°C ~ 125°C (TA)
• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Internal Switch(s): Yes

The STR5A451D qualifies as a parametric equivalent substitute, maintaining identical electrical specifications and mechanical compatibility across all critical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the STR5A453D and STR5A451D are active products manufactured by Sanken Electric USA Inc. and maintain full compliance with ROHS3 and REACH regulatory requirements. The devices are electrically and mechanically interchangeable across all specified parameters.

Selection between these parts should be based on:

Inventory Availability: The STR5A451D currently has 1093 units in stock compared to 776 units for the STR5A453D, providing greater supply availability.

Packaging Format: The STR5A453D is supplied in standard packaging, while the STR5A451D is supplied in tube packaging. Tube packaging may offer advantages for automated assembly processes.

Regulatory Compliance: Both parts maintain identical compliance certifications (ROHS3, REACH Unaffected, MSL 1), ensuring equivalent regulatory acceptance in all applications.

Frequently Asked Questions (FAQ)

Q: Can the STR5A451D be used as a direct replacement for the STR5A453D?

A: Yes. The STR5A451D is a parametric equivalent substitute with identical electrical specifications, operating characteristics, and mechanical compatibility. All critical parameters including topology, voltage ratings, switching frequency, fault protection, and package dimensions match exactly.

Q: Are there any differences in the pin configuration between these parts?

A: No. Both parts use the 8-DIP (0.300", 7.62mm) package with through-hole mounting. Pin configuration and spacing are identical.

Q: Do both parts support the same operating temperature range?

A: Yes. Both the STR5A453D and STR5A451D operate across the identical temperature range of -40°C to 125°C (TA).

Q: What is the difference between the packaging formats?

A: The STR5A453D uses standard packaging, while the STR5A451D is supplied in tube packaging. Tube packaging is typically used for automated pick-and-place assembly operations. The electrical and mechanical specifications remain identical regardless of packaging format.

Q: Are both parts RoHS compliant?

A: Yes. Both the STR5A453D and STR5A451D are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, ensuring equivalent environmental and regulatory compliance.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. The identical 8-DIP package dimensions and through-hole mounting specifications ensure direct PCB compatibility without design modifications.

Q: What fault protection features are included in both parts?

A: Both parts include identical fault protection: Current Limiting, Over Load, Over Temperature, and Over Voltage protection, along with Soft Start control features.