SC4211STRT Equivalent & Substitute Parts

Part Overview

The SC4211STRT is a linear voltage regulator IC from Semtech designed for positive adjustable (fixed) output applications. It delivers 1A output current in an 8-SOIC surface mount package with integrated protection features including over-current, over-temperature, and reverse polarity protection. The device is classified as obsolete, making identification of compatible substitute parts essential for ongoing production support and design continuity.

Key Parameters

Parameter	Value
Manufacturer	Semtech
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Number of Regulators	1
Voltage - Input (Max)	6V
Voltage - Output (Min/Fixed)	0.5V
Voltage - Output (Max)	5.5V
Voltage Dropout (Max)	0.5V @ 1A
Current - Output	1A
Current - Quiescent (Iq)	50 µA
Current - Supply (Max)	3 mA
Control Features	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SC4211STRT are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Output configuration (Positive)
Output type (Adjustable/Fixed)
Number of regulators (1)
Voltage specifications (Input Max: 6V; Output Min/Fixed: 0.5V; Output Max: 5.5V)
Dropout voltage (0.5V @ 1A)
Output current (1A)
Quiescent current (50 µA)
Protection features (Over Current, Over Temperature, Reverse Polarity)
Operating temperature range (-40°C ~ 85°C)
Package type (8-SOIC with Exposed Pad)

The SC4211HSTRT meets all these criteria and is classified as a parametric equivalent. The primary difference is packaging format (Tape & Reel vs. standard packaging) and product status (Not For New Designs vs. Obsolete).

Parameter Comparison

Parameter	SC4211STRT	SC4211HSTRT
Manufacturer	Semtech	Semtech Corporation
Output Configuration	Positive	Positive
Output Type	Adjustable (Fixed)	Adjustable (Fixed)
Number of Regulators	1	1
Voltage - Input (Max)	6V	6V
Voltage - Output (Min/Fixed)	0.5V	0.5V
Voltage - Output (Max)	5.5V	5.5V
Voltage Dropout (Max)	0.5V @ 1A	0.5V @ 1A
Current - Output	1A	1A
Current - Quiescent (Iq)	50 µA	50 µA
Current - Supply (Max)	3 mA	3 mA
Control Features	Enable	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width) Exposed Pad	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Not For New Designs
Packaging Format	Standard	Tape & Reel (TR)
RoHS Status	Not specified	RoHS Compliant

Engineering Selection Recommendations

The SC4211HSTRT is a direct parametric equivalent to the SC4211STRT. Both devices share identical electrical specifications and package geometry, ensuring functional interchangeability in circuit applications.

Product Status Consideration: The SC4211STRT is classified as obsolete, while the SC4211HSTRT is marked as "Not For New Designs." For ongoing production support of existing designs, the SC4211HSTRT provides continued availability with identical performance characteristics.

Compliance Advantage: The SC4211HSTRT carries RoHS Compliant certification, whereas RoHS status is not specified for the SC4211STRT. This distinction may be relevant for applications subject to environmental compliance requirements.

Packaging Format: The SC4211HSTRT is supplied in Tape & Reel format, which is standard for high-volume manufacturing operations. The original SC4211STRT packaging format is not specified in the available data.

Frequently Asked Questions (FAQ)

Q: Can SC4211HSTRT replace SC4211STRT in existing designs? A: Yes. The SC4211HSTRT is a parametric equivalent with identical electrical specifications, output current rating (1A), voltage ranges (0.5V to 5.5V output), dropout voltage (0.5V @ 1A), protection features, and 8-SOIC package geometry. Direct substitution is supported without circuit modification.

Q: What is the difference between SC4211STRT and SC4211HSTRT? A: The devices are electrically identical. Primary differences are: (1) Product status—SC4211STRT is obsolete while SC4211HSTRT is not for new designs; (2) Packaging format—SC4211HSTRT is supplied in Tape & Reel; (3) RoHS compliance—SC4211HSTRT is RoHS compliant.

Q: Are there any package compatibility concerns? A: No. Both parts use the same 8-SOIC (0.154", 3.90mm Width) Exposed Pad package. PCB footprints and assembly processes are identical.

Q: Which part should be selected for new production? A: The SC4211HSTRT is the appropriate choice for new production due to its "Not For New Designs" status being less restrictive than the SC4211STRT's obsolete classification, combined with RoHS compliance certification and standard Tape & Reel packaging availability.

Q: Are the protection features identical? A: Yes. Both devices include over-current, over-temperature, and reverse polarity protection. Enable control features are present on both variants.

Q: What is the operating temperature range for both parts? A: Both SC4211STRT and SC4211HSTRT operate across -40°C to 85°C (TA), ensuring compatibility across industrial and commercial temperature specifications.

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