LM119H Equivalent & Substitute Parts

Part Overview

The LM119H is a general-purpose comparator IC manufactured by Texas Instruments, housed in a TO-100-10 metal can package for through-hole mounting. This device features dual comparator elements with DTL, open-collector, RTL, and TTL output types, operating across a wide supply voltage range of 5V to 36V (single supply) or ±2.5V to 18V (dual supply). The LM119H maintains active product status with full ROHS3 compliance and unlimited moisture sensitivity rating, making it suitable for legacy and new design applications requiring general-purpose comparison functionality.

Substitute parts are identified when component availability is constrained, inventory levels require diversification, or supply chain optimization is necessary while maintaining identical electrical and mechanical performance.

Substiute Parts

LM119H

Texas InstrumentsIn Stock: 1543LM119H Datasheet

Current PartRFQ

LM119H/NOPB

Texas InstrumentsIn Stock: 1563LM119H/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM119H is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters establish the substitution criteria:

• Electrical Performance: Voltage supply range (5V ~ 36V single, ±2.5V ~ 18V dual), input offset voltage (4mV @ ±15V), input bias current (0.5µA @ ±15V), output current (25mA typical), and quiescent current (11.5mA maximum) must remain identical.
• Functional Architecture: Dual-element general-purpose comparator configuration with DTL, open-collector, RTL, and TTL output types.
• Mechanical Compatibility: TO-100-10 metal can package with through-hole mounting.
• Compliance & Certification: ROHS3 compliance and MSL 1 rating required.
• Product Status: Active status ensures ongoing availability and support.

Only parts meeting all these criteria qualify as direct parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

Both the LM119H and LM119H/NOPB are active products from Texas Instruments with identical electrical specifications and mechanical packaging. The designation "/NOPB" indicates lead-free plating compliance, reflecting manufacturing process variation rather than functional difference. Selection between these parts should be based on:

• Supply Chain Availability: Current inventory levels (LM119H: 1470 pcs, LM119H/NOPB: 1531 pcs) may influence procurement decisions.
• Compliance Requirements: Both parts meet ROHS3 and REACH compliance standards, suitable for applications with environmental regulatory requirements.
• Manufacturing Process Compatibility: The /NOPB variant incorporates lead-free plating and is preferred for new designs and manufacturing processes requiring lead-free component qualification.

Both parts are direct substitutes with no functional or performance differentiation.

Frequently Asked Questions (FAQ)

Q: Can LM119H/NOPB be used as a direct replacement for LM119H?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical parameters, output types, supply voltage ranges, and TO-100-10 metal can packaging. The /NOPB designation indicates lead-free plating and does not affect functional performance or compatibility.

Q: What does the "/NOPB" designation mean?

A: NOPB stands for "No Plumbum" (no lead). This designation indicates the component uses lead-free plating in its manufacturing process, complying with ROHS3 requirements. Functionally, the part is identical to the standard LM119H.

Q: Are there any package or pinout differences between LM119H and LM119H/NOPB?

A: No. Both parts use the TO-100-10 metal can package with identical pinout and through-hole mounting configuration. PCB layout and socket compatibility are identical.

Q: What are the critical parameters for substitution eligibility?

A: Substitution requires matching: dual-element general-purpose comparator architecture, DTL/open-collector/RTL/TTL output types, 5V ~ 36V single supply or ±2.5V ~ 18V dual supply operation, 4mV input offset voltage, 0.5µA input bias current, 25mA output current, 11.5mA quiescent current, -55°C ~ 125°C operating temperature range, TO-100-10 metal can package, and ROHS3 compliance.

Q: Can these parts be used in legacy designs originally specified for LM119H?

A: Yes. Both parts maintain active product status and full backward compatibility with existing LM119H designs. No circuit modifications or re-qualification are required.