S-8340C30AFT-T2-U Equivalent & Substitute Parts

Part Overview

The S-8340C30AFT-T2-U is a Boost Regulator Positive Output Step-Up DC-DC Controller IC manufactured by ABLIC Inc. in 8-TSSOP surface mount packaging. This component functions as a transistor driver for step-up (boost) topology power management applications with a single positive output phase. The part is classified as obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Manufacturer	ABLIC Inc.
Category	Power Management (PMIC)
Function	Step-Up (Boost) DC-DC Controller
Output Type	Transistor Driver
Output Configuration	Positive
Number of Outputs	1
Output Phases	1
Voltage Supply Range (Vcc/Vdd)	0.8V ~ 6V
Switching Frequency	300kHz
Duty Cycle (Max)	89%
Control Features	Current Limit, Enable, Soft Start
Operating Temperature Range	-40°C ~ 85°C (TA)
Package / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the S-8340C30AFT-T2-U is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Output Type: Transistor Driver
Function: Step-Up (Boost)
Output Configuration: Positive
Number of Outputs: 1
Output Phases: 1
Voltage Supply Range: 0.8V ~ 6V
Duty Cycle (Max): 89%
Control Features: Current Limit, Enable, Soft Start
Operating Temperature Range: -40°C ~ 85°C (TA)
Package / Case: 8-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Variable Parameters (Allowed Differences):

Switching Frequency: 30kHz, 300kHz, or 600kHz
Base Product Number: S-8340 or S-8341
Packaging Format: Cut Tape (CT) or standard packaging

All substitute parts listed maintain identical electrical and mechanical specifications except for switching frequency and base product designation, which are application-dependent variables.

Parameter Comparison

Part Number	Manufacturer	Switching Frequency	Voltage Supply (Vcc/Vdd)	Duty Cycle (Max)	Operating Temperature	Package	Inventory Status
S-8340C30AFT-T2-U	ABLIC Inc.	300kHz	0.8V ~ 6V	89%	-40°C ~ 85°C	8-TSSOP	897 Pcs
S-8340A50AFT-T2-U	ABLIC Inc.	600kHz	0.8V ~ 6V	89%	-40°C ~ 85°C	8-TSSOP	900 Pcs
S-8340B00AFT-T2-U	ABLIC Inc.	600kHz	0.8V ~ 6V	89%	-40°C ~ 85°C	8-TSSOP	909 Pcs
S-8340C50AFT-T2-U	ABLIC Inc.	300kHz	0.8V ~ 6V	89%	-40°C ~ 85°C	8-TSSOP	1085 Pcs
S-8341A50AFT-T2-U	ABLIC Inc.	600kHz	0.8V ~ 6V	89%	-40°C ~ 85°C	8-TSSOP	828 Pcs
S-8341B00AFT-T2-U	ABLIC Inc.	600kHz	0.8V ~ 6V	89%	-40°C ~ 85°C	8-TSSOP	5270 Pcs
S-8341C33AFT-T2-U	ABLIC Inc.	30kHz	0.8V ~ 6V	89%	-40°C ~ 85°C	8-TSSOP	789 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain full compliance with ROHS3 and REACH requirements. Selection between S-8340C30AFT-T2-U and its equivalents depends on application-specific switching frequency requirements:

300kHz Switching Frequency (Matches Original): S-8340C30AFT-T2-U and S-8340C50AFT-T2-U provide identical switching characteristics. S-8340C50AFT-T2-U offers higher inventory availability (1085 Pcs vs. 897 Pcs).

600kHz Switching Frequency (Higher Frequency): S-8340A50AFT-T2-U, S-8340B00AFT-T2-U, S-8341A50AFT-T2-U, and S-8341B00AFT-T2-U are suitable for applications requiring faster switching response. S-8341B00AFT-T2-U provides maximum inventory depth (5270 Pcs).

30kHz Switching Frequency (Lower Frequency): S-8341C33AFT-T2-U is applicable for applications requiring reduced switching frequency operation.

All parts share identical electrical performance parameters, package specifications, and regulatory compliance status. Selection should be based on circuit design requirements for switching frequency and component availability.

Frequently Asked Questions (FAQ)

Q: Can S-8340C30AFT-T2-U be directly replaced with S-8340C50AFT-T2-U?

A: Yes. Both parts operate at 300kHz switching frequency and share identical electrical and mechanical specifications. The primary difference is inventory availability and packaging format.

Q: What is the impact of switching frequency differences between substitute parts?

A: Switching frequency affects the size and performance of external filter components (inductors and capacitors) in the boost converter circuit. Higher frequencies (600kHz) typically allow smaller passive components, while lower frequencies (30kHz) require larger components. Circuit design must accommodate the selected switching frequency.

Q: Are all substitute parts compatible with the same PCB layout?

A: Yes. All substitute parts use identical 8-TSSOP packaging with 0.173" width and 4.40mm dimensions. PCB footprints and pin assignments are compatible across all listed parts.

Q: Why are there S-8340 and S-8341 base product numbers in the substitute list?

A: Both S-8340 and S-8341 series share identical functional specifications, electrical performance, and package specifications. The base product number variation does not affect electrical compatibility or performance in boost regulator applications.

Q: Are all substitute parts ROHS3 and REACH compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original S-8340C30AFT-T2-U.

Q: What is the Moisture Sensitivity Level (MSL) for all substitute parts?

A: All parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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