LM337BD2TG Equivalent & Substitute Parts

Part Overview

The LM337BD2TG is a linear voltage regulator IC designed for negative adjustable output applications, delivering 1.5A output current in a D2PAK-3 surface mount package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The LM337 series provides negative voltage regulation with adjustable output levels, making it suitable for applications requiring negative rail generation in power management circuits.

Substiute Parts

LM337BD2TG

onsemiIn Stock: 1360LM337BD2TG Datasheet

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LM337D2TR4G

onsemiIn Stock: 1284LM337D2TR4G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM337BD2TG is determined by strict equivalence across the following critical parameters:

• Output configuration (negative polarity)
• Output type (adjustable regulation)
• Voltage input and output ranges (-40V input max, -1.2V to -37V output)
• Output current capability (1.5A)
• Quiescent current (6 mA)
• Power supply rejection ratio (77dB at 120Hz)
• Protection features (over current and over temperature)
• Package type (D2PAK-3 / TO-263-3)
• Surface mount compatibility
• RoHS3 compliance

The LM337D2TR4G meets all these criteria and qualifies as a direct functional equivalent. The primary distinction between these parts is product status and operating temperature range, which do not affect electrical substitutability for the specified application parameters.

Parameter Comparison

Engineering Selection Recommendations

The LM337D2TR4G is the qualified substitute for the LM337BD2TG. Both components share identical electrical specifications and package configurations. The LM337D2TR4G maintains active product status with onsemi, ensuring continued availability and manufacturing support. Both parts are ROHS3 compliant and carry equivalent regulatory certifications (REACH Unaffected, ECCN EAR99).

The operating temperature range difference (-40°C to 125°C for LM337BD2TG versus 0°C to 125°C for LM337D2TR4G) must be evaluated against application requirements. Applications requiring operation below 0°C require the LM337BD2TG specification. For applications within the 0°C to 125°C range, the LM337D2TR4G provides equivalent performance with the advantage of active product status.

Frequently Asked Questions (FAQ)

Q: Can LM337D2TR4G directly replace LM337BD2TG in existing designs?

A: Yes, for applications operating within 0°C to 125°C. Both parts are electrically identical with matching output voltage ranges (-1.2V to -37V), output current (1.5A), and protection features. Pin configuration and package footprint (D2PAK-3) are identical, enabling direct PCB substitution.

Q: What is the significance of the product status difference?

A: LM337BD2TG is classified as obsolete, indicating onsemi has discontinued active manufacturing and support. LM337D2TR4G maintains active status, ensuring ongoing availability, manufacturing consistency, and technical support from the manufacturer.

Q: Are there temperature range limitations for substitution?

A: The LM337D2TR4G operates from 0°C to 125°C, while LM337BD2TG operates from -40°C to 125°C. Applications requiring operation below 0°C cannot use the LM337D2TR4G as a substitute. Verify application temperature requirements before selection.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both LM337BD2TG and LM337D2TR4G are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Regulatory compliance is equivalent for both parts.

Q: Is the D2PAK-3 package identical between both parts?

A: Yes. Both parts use the TO-263-3 D2PAK package with 2 leads plus tab configuration. Surface mount footprint and land pattern requirements are identical.