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LM2941T/LF08 Equivalent & Substitute Parts
Part Overview
The LM2941T/LF08 is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 1A output current with an adjustable voltage range from 5V to 20V and features integrated protection against over-temperature, reverse polarity, and short-circuit conditions. The device operates across the industrial temperature range of -40°C to 125°C and is packaged in TO-220-5 formed leads for through-hole mounting.
The LM2941T/LF08 carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this regulator.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Package / Case | TO-220-5 Formed Leads |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Voltage - Input (Max) | 26V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | 20V |
| Current - Output | 1A |
| Voltage Dropout (Max) | 1V @ 1A |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Through Hole |
| Protection Features | Over Temperature, Reverse Polarity, Short Circuit |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the LM2941T/LF08 is determined by strict equivalence across the following critical parameters:
- Output configuration (Positive)
- Output type (Adjustable)
- Voltage specifications (Input Max: 26V; Output range: 5V–20V)
- Current rating (1A output)
- Voltage dropout (1V @ 1A)
- Package type (TO-220-5 Formed Leads)
- Protection features (Over Temperature, Reverse Polarity, Short Circuit)
- Operating temperature range (-40°C ~ 125°C)
- Compliance certifications (ROHS3, REACH Unaffected)
The LM2941T/LF03 meets all these criteria and qualifies as a parametric equivalent substitute. The primary distinction between these parts is packaging format (Tube for LM2941T/LF03 versus unspecified for LM2941T/LF08) and product status (Active versus Obsolete).
Parameter Comparison
| Parameter | LM2941T/LF08 | LM2941T/LF03 |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Base Product Number | LM2941 | LM2941 |
| Package / Case | TO-220-5 Formed Leads | TO-220-5 Formed Leads |
| Supplier Device Package | TO-220-5 | TO-220-5 |
| Output Configuration | Positive | Positive |
| Output Type | Adjustable | Adjustable |
| Number of Regulators | 1 | 1 |
| Voltage - Input (Max) | 26V | 26V |
| Voltage - Output (Min/Fixed) | 5V | 5V |
| Voltage - Output (Max) | 20V | 20V |
| Current - Output | 1A | 1A |
| Voltage Dropout (Max) | 1V @ 1A | 1V @ 1A |
| Current - Quiescent (Iq) | 10 mA | 10 mA |
| Current - Supply (Max) | 15 mA | 15 mA |
| Control Features | Enable | Enable |
| Protection Features | Over Temperature, Reverse Polarity, Short Circuit | Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Through Hole | Through Hole |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The LM2941T/LF03 is the direct parametric equivalent for the LM2941T/LF08. Both devices share identical electrical specifications, protection features, and compliance certifications (ROHS3 Compliant, REACH Unaffected). The LM2941T/LF03 maintains active product status with Texas Instruments, ensuring ongoing availability and supply chain support.
For applications currently specified with LM2941T/LF08, the LM2941T/LF03 provides functional and electrical interchangeability without design modification. Pin configuration, thermal characteristics, and regulatory compliance remain equivalent across both part numbers.
Frequently Asked Questions (FAQ)
Q: Can LM2941T/LF03 be used as a direct replacement for LM2941T/LF08?
A: Yes. Both parts share identical electrical specifications, output characteristics, protection features, and operating temperature range. The devices are pin-compatible in TO-220-5 packaging and require no circuit modifications.
Q: What is the difference between LM2941T/LF08 and LM2941T/LF03?
A: The primary differences are product status (Obsolete versus Active) and packaging format (Tube for LM2941T/LF03). All electrical and mechanical parameters are identical.
Q: Are there any compliance or certification differences?
A: No. Both parts carry ROHS3 compliance, REACH Unaffected status, and identical moisture sensitivity levels (MSL 1 - Unlimited).
Q: Is the TO-220-5 package identical between both parts?
A: Yes. Both devices use TO-220-5 formed leads for through-hole mounting with identical pin configuration and thermal characteristics.
Q: Why is LM2941T/LF08 marked as obsolete?
A: Product status reflects Texas Instruments' lifecycle management. The LM2941T/LF03 remains in active production and is the recommended source for new designs and replacements.
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