LM20BIM7 Equivalent & Substitute Parts

Part Overview

The LM20BIM7 is an analog local temperature sensor manufactured by Texas Instruments, designed for applications requiring temperature measurement across a -55°C to 130°C range. The device features a 11.77mV/°C output resolution and operates from a 2.4V to 5.5V supply voltage in a 5-TSSOP (SC-70-5) surface mount package. The LM20BIM7 is classified as "Not For New Designs," indicating it has been superseded. Finding equivalent or substitute parts is necessary for ongoing production support, legacy system maintenance, and design continuity where this sensor specification remains applicable.

Key Parameters

Parameter	Value
Sensor Type	Analog, Local
Sensing Temperature Range	-55°C ~ 130°C
Output Type	Analog Voltage
Supply Voltage	2.4V ~ 5.5V
Resolution	11.77mV/°C
Accuracy	±1.5°C (±2.5°C)
Features	Shutdown Mode
Mounting Type	Surface Mount
Package	5-TSSOP, SC-70-5, SOT-353

Substitute Part Grouping Explanation

Substitution eligibility for the LM20BIM7 is determined by the following critical parameters:

Sensor type must be Analog, Local
Temperature sensing range must cover -55°C ~ 130°C
Output type must be Analog Voltage
Resolution must be 11.77mV/°C
Accuracy specification must be ±1.5°C (±2.5°C)
Features must include Shutdown Mode
Mounting type must be Surface Mount
Package must be compatible with 5-TSSOP footprint variants

Two substitute parts meet these criteria: LM20BIM7/NOPB (direct equivalent from Texas Instruments) and STLM20W87F (cross-manufacturer substitute from STMicroelectronics). Both maintain identical electrical performance specifications while differing in supply voltage range, package designation, and compliance status.

Parameter Comparison

Parameter	LM20BIM7	LM20BIM7/NOPB	STLM20W87F
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics
Sensor Type	Analog, Local	Analog, Local	Analog, Local
Sensing Temperature Range	-55°C ~ 130°C	-55°C ~ 130°C	-55°C ~ 130°C
Output Type	Analog Voltage	Analog Voltage	Analog Voltage
Supply Voltage	2.4V ~ 5.5V	2.4V ~ 5.5V	2.7V ~ 5.5V
Resolution	11.77mV/°C	11.77mV/°C	11.77mV/°C
Accuracy	±1.5°C (±2.5°C)	±1.5°C (±2.5°C)	±1.5°C (±2.5°C)
Features	Shutdown Mode	Shutdown Mode	Shutdown Mode
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353
Supplier Device Package	SC-70-5	SC-70-5	SOT-323-5
Product Status	Not For New Designs	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Affected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

LM20BIM7/NOPB is the direct equivalent part from Texas Instruments, maintaining identical electrical specifications and the same SC-70-5 package designation. This part is classified as Obsolete but offers ROHS3 compliance and REACH unaffected status, providing regulatory advantages over the original LM20BIM7. Inventory availability is higher at 40,300 pieces.

STLM20W87F is a cross-manufacturer substitute from STMicroelectronics with Active product status, ensuring long-term availability and ongoing manufacturer support. It maintains all critical electrical parameters and shutdown mode functionality. The supply voltage range extends to 2.7V minimum (versus 2.4V for the LM20BIM7), which is compatible with most applications. The package designation differs (SOT-323-5 versus SC-70-5), but both are 5-TSSOP footprint variants. STLM20W87F carries ROHS3 compliance and REACH unaffected status. Current inventory is 4,770 pieces.

For new production or long-term support requirements, STLM20W87F is preferred due to Active status. For legacy system maintenance where existing inventory or design documentation references the original part, LM20BIM7/NOPB provides direct compatibility.

Frequently Asked Questions (FAQ)

Q: Can LM20BIM7/NOPB be used as a direct replacement for LM20BIM7?

A: Yes. Both parts share identical electrical specifications, including temperature range (-55°C ~ 130°C), resolution (11.77mV/°C), accuracy (±1.5°C / ±2.5°C), and supply voltage range (2.4V ~ 5.5V). The primary difference is product status and compliance certifications. LM20BIM7/NOPB is ROHS3 compliant and REACH unaffected, whereas LM20BIM7 is RoHS non-compliant and REACH affected.

Q: Is STLM20W87F compatible with LM20BIM7 in terms of package footprint?

A: Both parts use 5-TSSOP surface mount packages. LM20BIM7 uses SC-70-5 designation while STLM20W87F uses SOT-323-5 designation. These are compatible footprint variants for PCB layout purposes. Pin configuration and electrical function are equivalent.

Q: What is the minimum supply voltage difference between LM20BIM7 and STLM20W87F?

A: LM20BIM7 operates from 2.4V minimum, while STLM20W87F operates from 2.7V minimum. Applications requiring operation below 2.7V must use LM20BIM7 or LM20BIM7/NOPB. For applications operating at 2.7V or higher, STLM20W87F is fully compatible.

Q: Why is STLM20W87F recommended for new designs despite being from a different manufacturer?

A: STLM20W87F carries Active product status, ensuring ongoing manufacturer support and long-term availability. Both LM20BIM7 and LM20BIM7/NOPB are classified as Not For New Designs or Obsolete, respectively. STLM20W87F also provides ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements.

Q: Are there any differences in shutdown mode functionality between these parts?

A: All three parts include Shutdown Mode as a standard feature. Functionality is equivalent across LM20BIM7, LM20BIM7/NOPB, and STLM20W87F.

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