VIPER114HSTR Equivalent & Substitute Parts

Part Overview

The VIPER114HSTR is an offline switching converter IC manufactured by STMicroelectronics, designed for power management applications requiring buck, buck-boost, or flyback topology configurations. This non-isolated PMIC operates at 120kHz switching frequency with integrated internal switches and comprehensive fault protection including current limiting, overload, overvoltage, and short circuit protection. The device is actively produced and ROHS3 compliant, making it suitable for industrial and commercial power supply designs. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, procurement lead times, or design flexibility needs.

Substiute Parts

VIPER114HSTR

STMicroelectronicsIn Stock: 33285VIPER114HSTR Datasheet

Current PartRFQ

VIPER115HSTR

STMicroelectronicsIn Stock: 3461VIPER115HSTR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VIPER114HSTR is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Voltage breakdown rating: 800V
• Supply voltage range: 4.5V ~ 30V
• Start-up voltage: 16V
• Switching frequency: 120kHz
• Power rating: 12W
• Duty cycle: 80%
• Topology support: Buck, Buck-Boost, Flyback
• Fault protection features: Current Limiting, Overload, Overvoltage, Short Circuit
• Control features: Soft Start
• Output isolation: Non-Isolated
• Internal switches: Yes

Mechanical Parameters (Must Match):

• Package type: 10-SOP (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Operating temperature range: -40°C ~ 125°C (TJ)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

The VIPER115HSTR qualifies as a parametric equivalent substitute because all electrical, mechanical, and compliance parameters are identical to the VIPER114HSTR. The only difference is the packaging format (Tape & Reel versus Cut Tape & Digi-Reel®), which does not affect electrical performance or functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both VIPER114HSTR and VIPER115HSTR are active products from STMicroelectronics with identical electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

Packaging and Supply Chain Considerations: The VIPER114HSTR is supplied in Cut Tape and Digi-Reel® format with 33,200 pieces in current inventory. The VIPER115HSTR is supplied in standard Tape & Reel format with 3,429 pieces in current inventory. Choose based on procurement requirements, assembly equipment compatibility, and lead time needs.

Compliance and Regulatory Status: Both parts maintain identical ROHS3 compliance, REACH unaffected status, and moisture sensitivity ratings. Both are suitable for applications requiring regulatory compliance in industrial and commercial environments.

Product Lifecycle: Both parts carry active product status, indicating ongoing manufacturer support and availability. No lifecycle concerns exist for either variant.

Functional Equivalence: The VIPER114HSTR and VIPER115HSTR are functionally interchangeable in all offline switching converter applications supporting buck, buck-boost, or flyback topologies within the specified electrical operating parameters.

Frequently Asked Questions (FAQ)

Q: Can VIPER115HSTR replace VIPER114HSTR in existing designs?

A: Yes. The VIPER115HSTR is a parametric equivalent with identical electrical specifications, voltage ratings, switching frequency, power handling, fault protection, and operating temperature range. The only difference is packaging format (Tape & Reel versus Cut Tape & Digi-Reel®). No circuit modifications are required.

Q: What is the difference between VIPER114HSTR and VIPER115HSTR?

A: The parts are electrically and mechanically identical. The difference is limited to packaging format. VIPER114HSTR uses Cut Tape and Digi-Reel® packaging, while VIPER115HSTR uses standard Tape & Reel packaging. Both are 10-SSOP surface mount packages with identical pin configurations and electrical performance.

Q: Are both parts suitable for buck, buck-boost, and flyback topologies?

A: Yes. Both VIPER114HSTR and VIPER115HSTR support all three topologies: buck, buck-boost, and flyback. Both operate at 120kHz switching frequency with 80% duty cycle and 12W power rating.

Q: What are the voltage operating specifications for these parts?

A: Both parts operate with supply voltage range of 4.5V to 30V, 800V breakdown voltage, and 16V start-up voltage. Operating temperature range is -40°C to 125°C (junction temperature).

Q: Do both parts include the same fault protection features?

A: Yes. Both VIPER114HSTR and VIPER115HSTR include current limiting, overload protection, overvoltage protection, and short circuit protection. Both also feature soft start control.

Q: Which part should I select based on inventory availability?

A: VIPER114HSTR has higher inventory (33,200 pieces) compared to VIPER115HSTR (3,429 pieces). If immediate availability is critical, VIPER114HSTR is the preferred choice. If packaging format requirements favor Tape & Reel, VIPER115HSTR is suitable despite lower inventory levels.

Q: Are both parts RoHS3 compliant?

A: Yes. Both VIPER114HSTR and VIPER115HSTR are ROHS3 compliant with moisture sensitivity level 1 (unlimited) and REACH unaffected status.

Q: Can these parts be used interchangeably on the same PCB assembly line?

A: Electrical and mechanical compatibility is identical. Assembly line compatibility depends on whether your equipment supports both Cut Tape/Digi-Reel and standard Tape & Reel formats. Consult your assembly equipment specifications for packaging format compatibility.