LM20CIM7 Temperature Sensor Equivalent & Substitute Parts

Part Overview

The LM20CIM7 is an analog local temperature sensor manufactured by Texas Instruments, designed for applications requiring temperature measurement across a -55°C to 130°C range with 11.77mV/°C output resolution. The device operates on a 2.4V to 5.5V supply and features shutdown mode capability in a 5-TSSOP (SC-70-5) surface mount package.

This part is classified as obsolete. Locating equivalent or substitute components is necessary for new designs, production continuity, or system upgrades where the original part is no longer readily available or preferred.

Substiute Parts

LM20CIM7

Texas InstrumentsIn Stock: 1820LM20CIM7 Datasheet

Current PartRFQ

LM20CIM7/NOPB

Texas InstrumentsIn Stock: 5394LM20CIM7/NOPB Datasheet

DirectRFQ

STLM20W87F

STMicroelectronicsIn Stock: 4788STLM20W87F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM20CIM7 is determined by the following critical parameters:

• Sensor Type & Output: Must be analog local temperature sensor with analog voltage output
• Temperature Range: Must cover -55°C to 130°C minimum
• Resolution: Must maintain 11.77mV/°C output
• Supply Voltage: Must operate within or be compatible with 2.4V ~ 5.5V range
• Features: Must include shutdown mode capability
• Mounting & Package: Must be surface mount with compatible 5-pin package footprint

Two substitute parts meet these criteria:

1. LM20CIM7/NOPB (Texas Instruments) — Direct equivalent with identical electrical specifications and RoHS3 compliance upgrade
2. STLM20W87F (STMicroelectronics) — Cross-manufacturer equivalent with improved accuracy and active product status

Parameter Comparison

Engineering Selection Recommendations

LM20CIM7/NOPB is the direct equivalent substitute for LM20CIM7. Both parts share identical electrical specifications, temperature range, resolution, and package configuration. The primary distinction is RoHS3 compliance status; LM20CIM7/NOPB meets ROHS3 requirements while the original LM20CIM7 does not. Both parts are classified as obsolete. Selection of LM20CIM7/NOPB is appropriate when RoHS compliance is required or when the original part becomes unavailable.

STLM20W87F is a cross-manufacturer equivalent from STMicroelectronics. It maintains functional compatibility across all critical parameters: identical temperature range, resolution, shutdown mode, and 5-pin surface mount package. The STLM20W87F offers two significant advantages: active product status (ongoing availability) and superior accuracy specification (±1.5°C versus ±4°C). The minimum supply voltage is 2.7V compared to 2.4V for the LM20CIM7, which may require verification in applications operating below 2.7V. Both STLM20W87F and LM20CIM7/NOPB are ROHS3 compliant and REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can LM20CIM7/NOPB be used as a direct replacement for LM20CIM7?

A: Yes. LM20CIM7/NOPB is electrically and mechanically identical to LM20CIM7. Both parts feature the same temperature range (-55°C to 130°C), resolution (11.77mV/°C), supply voltage (2.4V ~ 5.5V), accuracy (±4°C), and 5-TSSOP package. The primary difference is RoHS3 compliance status.

Q: Is STLM20W87F compatible with LM20CIM7 in existing designs?

A: STLM20W87F is functionally compatible with LM20CIM7 for applications where the minimum supply voltage of 2.7V is acceptable. Both parts operate across -55°C to 130°C, provide 11.77mV/°C resolution, include shutdown mode, and use identical 5-pin surface mount packages. The improved accuracy of STLM20W87F (±1.5°C) may benefit precision-critical applications.

Q: What is the package compatibility between these parts?

A: All three parts (LM20CIM7, LM20CIM7/NOPB, and STLM20W87F) use 5-pin surface mount packages designated as 5-TSSOP, SC-70-5, or SOT-353. These designations refer to the same physical package footprint, ensuring PCB layout compatibility.

Q: Why is STLM20W87F listed as active while the others are obsolete?

A: STLM20W87F is manufactured by STMicroelectronics and remains in active production. LM20CIM7 and LM20CIM7/NOPB are Texas Instruments parts that have reached end-of-life status. For new designs or long-term production requirements, STLM20W87F offers supply continuity advantages.

Q: Are there supply voltage considerations when substituting these parts?

A: LM20CIM7 and LM20CIM7/NOPB operate on 2.4V ~ 5.5V supply. STLM20W87F requires 2.7V ~ 5.5V minimum. Applications operating below 2.7V must use LM20CIM7 or LM20CIM7/NOPB. For applications operating at 2.7V or above, all three parts are compatible.