LB4310AAPG Equivalent & Substitute Parts

Part Overview

The LB4310AAPG is a general purpose amplifier manufactured by Diodes Incorporated, featuring two circuits in an 8-SOIC surface mount package. This device is classified as obsolete, indicating it is no longer in active production. The LB4310AAPG operates across a wide supply voltage range of 3V to 36V and maintains performance across industrial temperature ranges from -40°C to 105°C.

Due to its obsolete status, locating new original inventory of the LB4310AAPG presents supply chain challenges. Identifying equivalent substitute parts with matching electrical and mechanical specifications is essential for design continuity and production support.

Key Parameters

Parameter	Value
Amplifier Type	General Purpose
Number of Circuits	2
Slew Rate	0.5 V/µs
Gain Bandwidth Product	1 MHz
Current - Input Bias	20 nA
Voltage - Input Offset	500 µV
Current - Supply	200 µA
Current - Output / Channel	40 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C to 105°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LB4310AAPG is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

Amplifier type classification (General Purpose)
Number of integrated circuits (2 circuits)
Slew rate (0.5 V/µs)
Gain bandwidth product (1 MHz)
Input bias current (20 nA)
Input offset voltage (500 µV)
Supply current (200 µA)
Output current per channel (40 mA)
Supply voltage range (3V to 36V)
Operating temperature range (-40°C to 105°C)

Mechanical Specifications:

Surface mount mounting type
8-SOIC package with 0.154" width (3.90mm)

Compliance Requirements:

ROHS3 compliance

The AP4310EMTR-G1 satisfies all electrical and mechanical parameters specified for the LB4310AAPG. Both devices are manufactured by Diodes Incorporated and share identical functional characteristics within the general purpose amplifier category.

Parameter Comparison

Parameter	LB4310AAPG	AP4310EMTR-G1	Match
Manufacturer	Diodes Incorporated	Diodes Incorporated	Yes
Amplifier Type	General Purpose	General Purpose	Yes
Number of Circuits	2	2	Yes
Slew Rate	0.5 V/µs	0.5 V/µs	Yes
Gain Bandwidth Product	1 MHz	1 MHz	Yes
Current - Input Bias	20 nA	20 nA	Yes
Voltage - Input Offset	500 µV	500 µV	Yes
Current - Supply	200 µA	200 µA	Yes
Current - Output / Channel	40 mA	40 mA	Yes
Voltage - Supply Span (Min)	3 V	3 V	Yes
Voltage - Supply Span (Max)	36 V	36 V	Yes
Operating Temperature	-40°C to 105°C	-40°C to 105°C	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Product Status	Obsolete	Active	Different

Engineering Selection Recommendations

The AP4310EMTR-G1 is the direct substitute for the LB4310AAPG based on complete electrical and mechanical parameter equivalence. The primary distinction between these devices is product status: the LB4310AAPG is obsolete while the AP4310EMTR-G1 is active in production.

Selection Basis:

The AP4310EMTR-G1 maintains full compatibility with applications designed for the LB4310AAPG. Both devices are ROHS3 compliant and manufactured by Diodes Incorporated. The AP4310EMTR-G1 offers the additional advantage of active product status, ensuring ongoing availability and supply chain reliability.

For new designs or production requiring general purpose amplifier functionality with the specified electrical characteristics and 8-SOIC packaging, the AP4310EMTR-G1 is the appropriate selection. For legacy system support where the LB4310AAPG is currently deployed, the AP4310EMTR-G1 provides direct functional replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the AP4310EMTR-G1 directly replace the LB4310AAPG in existing designs?

A: Yes. The AP4310EMTR-G1 is electrically and mechanically equivalent to the LB4310AAPG across all specified parameters. No circuit modifications are required for substitution.

Q: What is the primary reason for seeking a substitute for the LB4310AAPG?

A: The LB4310AAPG is classified as obsolete, meaning it is no longer manufactured. The AP4310EMTR-G1 is an active product with ongoing production and availability.

Q: Are the package dimensions identical between these two parts?

A: Yes. Both the LB4310AAPG and AP4310EMTR-G1 use the 8-SOIC package with 0.154" width (3.90mm). PCB footprints are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LB4310AAPG and AP4310EMTR-G1 are ROHS3 compliant. The AP4310EMTR-G1 additionally carries REACH Unaffected status and EAR99 ECCN classification.

Q: What are the critical electrical parameters that define substitution compatibility?

A: Substitution is based on matching amplifier type, circuit count, slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, supply voltage range, and operating temperature range. All parameters are identical between the LB4310AAPG and AP4310EMTR-G1.

Q: Is the AP4310EMTR-G1 available in higher inventory quantities?

A: Yes. The AP4310EMTR-G1 is currently in active production with 17,111 pieces in stock, compared to 691 pieces of the obsolete LB4310AAPG.

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