LP395Z/LFT4 Equivalent & Substitute Parts

Part Overview

The LP395Z/LFT4 is a Bipolar (BJT) Transistor, NPN type, rated for 36 V collector-emitter breakdown voltage, housed in a Through Hole TO-92-3 package. This component is classified as Obsolete, indicating discontinued production by Texas Instruments. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this transistor.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	36 V
Operating Temperature Range	0°C ~ 125°C (TA)
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package	TO-92-3
Product Status	Obsolete
RoHS Status	RoHS non-compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the LP395Z/LFT4 is determined by strict equivalence across the following electrical and mechanical parameters:

Transistor Type: NPN configuration
Voltage Rating: 36 V collector-emitter breakdown voltage (maximum)
Package Type: TO-92-3 Through Hole configuration
Operating Temperature Range: 0°C ~ 125°C (TA)
Base Product Number: LP395 family designation

The LP395Z/NOPB qualifies as a direct substitute based on identical electrical specifications, matching package configuration, and common base product lineage. The primary distinction between the main part and substitute relates to product status (Obsolete versus Active) and packaging format (Formed Leads versus Bulk), with no impact on electrical or mechanical compatibility.

Parameter Comparison

Parameter	LP395Z/LFT4 (Main Part)	LP395Z/NOPB (Substitute)
Manufacturer	Texas Instruments	Texas Instruments
Category	Transistors, Bipolar (BJT)	Transistors, Bipolar (BJT)
Transistor Type	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	36 V	36 V
Operating Temperature	0°C ~ 125°C (TA)	0°C ~ 125°C (TA)
Mounting Type	Through Hole	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package	TO-92-3	TO-92-3
Base Product Number	LP395	LP395
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.29.0095	8541.29.0095

Engineering Selection Recommendations

The LP395Z/NOPB is the direct substitute for the obsolete LP395Z/LFT4. Selection of the substitute part is based on the following engineering criteria:

Product Status: The LP395Z/LFT4 is classified as Obsolete, making continued procurement from original inventory sources unsustainable. The LP395Z/NOPB maintains Active product status with Texas Instruments, ensuring long-term availability and supply chain reliability.

Electrical Equivalence: Both parts share identical electrical specifications, including NPN transistor type, 36 V collector-emitter breakdown voltage rating, and 0°C ~ 125°C operating temperature range. No circuit redesign or performance degradation results from substitution.

Mechanical Compatibility: Both parts utilize the TO-92-3 Through Hole package configuration, enabling direct board-level replacement without PCB layout modification.

Compliance Status: The LP395Z/NOPB achieves ROHS3 compliance, whereas the LP395Z/LFT4 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the substitute part satisfies compliance obligations. Both parts maintain REACH Unaffected status and EAR99 export classification.

Packaging Format: The LP395Z/LFT4 features Formed Leads packaging, while the LP395Z/NOPB is supplied in Bulk format. This distinction affects procurement and handling procedures but does not impact electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the LP395Z/NOPB be used as a direct replacement for the LP395Z/LFT4 in existing circuit designs?

A: Yes. The LP395Z/NOPB is electrically and mechanically equivalent to the LP395Z/LFT4. Both parts are NPN transistors with 36 V collector-emitter breakdown voltage, identical operating temperature ranges, and TO-92-3 Through Hole packages. No circuit modifications are required.

Q: What is the primary reason for substituting the LP395Z/LFT4?

A: The LP395Z/LFT4 is classified as Obsolete by Texas Instruments, indicating discontinued production. The LP395Z/NOPB is the Active equivalent, ensuring continued availability and supply chain support.

Q: Are there differences in RoHS compliance between these parts?

A: Yes. The LP395Z/LFT4 is RoHS non-compliant, while the LP395Z/NOPB is ROHS3 compliant. For applications subject to RoHS regulatory requirements, the LP395Z/NOPB satisfies compliance obligations.

Q: Does the packaging format difference (Formed Leads versus Bulk) affect electrical performance?

A: No. Packaging format relates to procurement and handling procedures only. Electrical and mechanical specifications remain identical between Formed Leads and Bulk packaging variants.

Q: Are both parts available from the same manufacturer?

A: Yes. Both the LP395Z/LFT4 and LP395Z/NOPB are manufactured by Texas Instruments and share the same base product number (LP395).

Q: What is the operating temperature range for both parts?

A: Both parts operate across the temperature range of 0°C ~ 125°C (TA).

Q: Can the LP395Z/NOPB be soldered directly into PCBs designed for the LP395Z/LFT4?

A: Yes. Both parts use the TO-92-3 Through Hole package configuration with identical pin assignments and lead spacing, enabling direct board-level replacement without PCB modification.

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