LM185BH Equivalent & Substitute Parts

Part Overview

The LM185BH is a shunt voltage reference IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This adjustable shunt voltage reference operates with a fixed output of 1.24V and maximum output of 5.3V, delivering up to 20mA with ±1% tolerance. The device is housed in a TO-99-8 metal can package and is designed for through-hole mounting applications. The LM185BH maintains Active product status with 1145 units currently in stock as new original inventory. Identifying equivalent and substitute parts is necessary when addressing supply chain constraints, regional availability limitations, or specific procurement requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

LM185BH

Texas InstrumentsIn Stock: 1185LM185BH Datasheet

Current PartRFQ

LM185BH

National SemiconductorIn Stock: 1253LM185BH Datasheet

Parametric EquivalentRFQ

LM185BH

National SemiconductorIn Stock: 1253LM185BH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM185BH are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain identical:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 1.24V
• Voltage - Output (Max): 5.3V
• Current - Output: 20mA
• Tolerance: ±1%
• Temperature Coefficient: 150ppm/°C
• Noise (10Hz to 10kHz): 50µVrms
• Current - Cathode: 45µA
• Operating Temperature: -55°C to 125°C (TA)
• Mounting Type: Through Hole
• Product Status: Active

The LM185BH from National Semiconductor meets all parametric requirements for direct substitution. Both the main part and substitute maintain identical electrical performance characteristics, compliance certifications, and operational specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Texas Instruments LM185BH and National Semiconductor LM185BH are Active status products with identical electrical specifications and parametric performance. Selection between these parts should be based on:

• Procurement availability and lead time requirements
• Regional supplier relationships and inventory access
• Compliance certifications: Both parts maintain ROHS3 compliance and EAR99 export classification
• Moisture Sensitivity Level: Both rated at MSL 1 (Unlimited), indicating no moisture sensitivity constraints
• Package compatibility: Verify mechanical fit within the application, as National Semiconductor variant lists TO-206AB and TO-46-3 package options alongside TO-99-8

Frequently Asked Questions (FAQ)

Q: Can the National Semiconductor LM185BH replace the Texas Instruments LM185BH in existing designs?

A: Yes. Both parts are parametrically equivalent across all critical electrical specifications including output voltage range (1.24V to 5.3V), output current (20mA), tolerance (±1%), temperature coefficient (150ppm/°C), and operating temperature range (-55°C to 125°C). Both are Active status products with identical compliance certifications.

Q: Are there package compatibility considerations between these substitutes?

A: Both parts are through-hole mounted in metal can packages. The Texas Instruments variant specifies TO-99-8, while the National Semiconductor variant lists TO-206AB, TO-46-3, and TO-99-8 options. Verify the specific package variant selected matches your PCB footprint and mechanical requirements.

Q: What parameters determine substitutability for the LM185BH?

A: Direct substitution requires matching all of the following: shunt reference type, adjustable output type, 1.24V minimum output voltage, 5.3V maximum output voltage, 20mA output current, ±1% tolerance, 150ppm/°C temperature coefficient, 50µVrms noise specification, 45µA cathode current, and -55°C to 125°C operating temperature range.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the Texas Instruments and National Semiconductor LM185BH are ROHS3 compliant, REACH affected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001. Both maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the base product number for these parts?

A: The base product number for both variants is LM185, with the BH suffix indicating the specific performance grade and packaging configuration.