Part Details for LM138K by Linear Technology
Results Overview of LM138K by Linear Technology
- Distributor Offerings: (1 listing)
- Number of FFF Equivalents: (4 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (10 options)
- CAD Models: (Request Part)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
LM138K Information
LM138K by Linear Technology is a Linear Regulator IC.
Linear Regulator ICs are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Price & Stock for LM138K
| Part # | Distributor | Description | Stock | Price | Buy | |
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Quest Components | IC,VOLT REGULATOR,ADJUSTABLE,+1.2 TO +32V,BIPOLAR,TO-204/-3,3PIN,METAL | 2 |
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$15.1840 | Buy Now |
US Tariff Estimator: LM138K by Linear Technology
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
Part Details for LM138K
LM138K Part Data Attributes
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LM138K
Linear Technology
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Datasheet
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Compare Parts:
LM138K
Linear Technology
Adjustable Positive Standard Regulator, 1.2V Min, 32V Max, BIPolar, MBFM2
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| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Part Package Code | TO-204AA | |
| Package Description | Metal Can, To-3, 3 Pin | |
| Pin Count | 2 | |
| Reach Compliance Code | Unknown | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Adjustability | Adjustable | |
| Dropout Voltage1-Nom | 3 V | |
| Input-Output Voltage Differential-Max | 35 V | |
| Input-Output Voltage Differential-Min | 3 V | |
| JESD-30 Code | O-MBFM-P2 | |
| JESD-609 Code | e0 | |
| Line Regulation-Max (%/V) | 0.04 | |
| Load Regulation-Max(%) | 0.6% | |
| Moisture Sensitivity Level | 1 | |
| Number of Functions | 1 | |
| Number of Outputs | 1 | |
| Number of Terminals | 2 | |
| Operating Temperature TJ-Max | 150 °C | |
| Operating Temperature TJ-Min | -55 °C | |
| Output Current1-Max | 5 A | |
| Output Voltage1-Max | 32 V | |
| Output Voltage1-Min | 1.2 V | |
| Package Body Material | Metal | |
| Package Code | BFM | |
| Package Equivalence Code | TO-204/-3 | |
| Package Shape | Round | |
| Package Style | Flange Mount | |
| Qualification Status | Not Qualified | |
| Regulator Type | Adjustable Positive Single Output Standard Regulator | |
| Surface Mount | No | |
| Technology | Bipolar | |
| Terminal Finish | Tin Lead | |
| Terminal Form | Pin/Peg | |
| Terminal Position | Bottom |
Alternate Parts for LM138K
This table gives cross-reference parts and alternative options found for LM138K. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM138K, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
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| 5962-3811706BYB | Linear Technology | Check for Price | Adjustable Positive Standard Regulator | LM138K vs 5962-3811706BYB |
| LM338KSTEEL | Texas Instruments | Check for Price | Adjustable Positive Standard Regulator, 1.24V Min, 32V Max, BIPolar, MBFM2 | LM138K vs LM338KSTEEL |
| M38510/11706SYA | Linear Technology | Check for Price | Adjustable Positive Standard Regulator, 1.2V Min, 32V Max, BIPolar | LM138K vs M38510/11706SYA |
| LM138K-MIL/NOPB | Texas Instruments | Check for Price | Adjustable Positive Standard Regulator, 1.2V Min, 32V Max, MBFM2 | LM138K vs LM138K-MIL/NOPB |
LM138K Frequently Asked Questions (FAQ)
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The LM138K can handle input voltages up to 40V, but it's recommended to keep the input voltage at least 2V higher than the output voltage to ensure proper regulation.
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The LM138K is an adjustable voltage regulator, which means you can set the output voltage using an external resistor divider network. The output voltage can be set between 1.2V and 37V, depending on the application requirements.
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The LM138K can regulate properly with a minimum load current of 5mA. However, it's recommended to have a load current of at least 10mA to ensure stable operation.
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The LM138K has a maximum operating temperature range of -40°C to 125°C. However, the device's performance and reliability may degrade at high temperatures. It's recommended to derate the output current and voltage at high temperatures to ensure reliable operation.
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You can use a transient voltage suppressor (TVS) diode or a zener diode in parallel with the input capacitor to protect the LM138K from input voltage transients and spikes. Additionally, you can add a series resistor and a capacitor to the input to filter out high-frequency noise.