RT9612BGS Equivalent & Substitute Parts

Part Overview

The RT9612BGS is a buck regulator positive output step-down DC-DC controller IC manufactured by Richtek USA Inc. in an 8-SOP package. This component functions as a transistor driver for step-down voltage conversion applications with a single output phase and synchronous rectifier capability. The RT9612BGS is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

RT9612BGS

Richtek USA Inc.In Stock: 5385RT9612BGS Datasheet

Current PartRFQ

RT9612BZS

Richtek USA Inc.In Stock: 35145RT9612BZS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The RT9612BGS has one parametric equivalent substitute: RT9612BZS. This substitution is valid based on the following critical parameters that determine functional interchangeability:

• Identical manufacturer (Richtek USA Inc.)
• Identical base product number (RT9612)
• Identical output type, function, and topology (Transistor Driver, Step-Down Buck)
• Identical output configuration and phase count (Positive, 1 output, 1 phase)
• Identical voltage supply range (4.5V ~ 14.6V)
• Identical switching frequency specification (500kHz)
• Identical synchronous rectifier capability
• Identical operating temperature range (-40°C ~ 85°C)
• Identical package and case dimensions (8-SOIC, 0.154", 3.90mm Width)
• Identical RoHS and MSL compliance ratings

The primary distinction between these parts is product status and packaging format, not electrical or mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The RT9612BZS is the direct parametric equivalent for the discontinued RT9612BGS. Both parts share identical electrical specifications, package dimensions, and compliance certifications. The RT9612BZS maintains active product status and is available in higher inventory quantities (35,100 pcs vs. 5,371 pcs for the original part).

Selection of RT9612BZS over RT9612BGS is justified by:

• Continued product availability and active manufacturer support
• Identical RoHS3 compliance and REACH unaffected status
• Identical MSL rating (3, 168 Hours) for moisture-sensitive handling
• Identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications
• Enhanced control features (Dead Time Control addition) providing equivalent or superior functionality
• Identical package footprint and pinout compatibility

No electrical re-qualification is required when substituting RT9612BZS for RT9612BGS in existing designs.

Frequently Asked Questions (FAQ)

Q: Can RT9612BZS be used as a direct replacement for RT9612BGS?

A: Yes. Both parts are manufactured by Richtek USA Inc. with identical electrical specifications, package dimensions (8-SOIC), and compliance ratings. The RT9612BZS is the active equivalent for the discontinued RT9612BGS.

Q: What is the difference between RT9612BGS and RT9612BZS?

A: The primary differences are product status and packaging format. RT9612BGS is discontinued; RT9612BZS is active. RT9612BGS is supplied in bulk packaging; RT9612BZS is supplied in cut tape (CT) format. Electrical specifications and package dimensions are identical.

Q: Are there any pin compatibility concerns?

A: No. Both parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pinout. PCB layouts and footprints require no modification.

Q: Do compliance certifications differ between these parts?

A: No. Both parts carry identical RoHS3 compliance, REACH unaffected status, MSL rating (3, 168 Hours), ECCN (EAR99), and HTSUS (8542.39.0001) classifications.

Q: What is the switching frequency specification for each part?

A: RT9612BGS operates at 500kHz. RT9612BZS operates at up to 500kHz. Both specifications are functionally equivalent for design purposes.

Q: Does RT9612BZS include additional control features?

A: RT9612BZS includes Dead Time Control in addition to Phase Control. RT9612BGS includes Phase Control. This enhancement in RT9612BZS does not affect compatibility or require design changes.