OP249GS-REEL Equivalent & Substitute Parts

Part Overview

The OP249GS-REEL is a J-FET operational amplifier manufactured by Analog Devices Inc., configured as a dual-circuit (2-circuit) device in an 8-SOIC surface mount package. This component is classified as a linear amplifier and is currently listed as obsolete. The OP249GS-REEL operates across a wide supply voltage range of 9V to 36V and is designed for applications requiring low input bias current and moderate bandwidth performance. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and system maintenance.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	2	—
Slew Rate	22	V/µs
Gain Bandwidth Product	4.7	MHz
Current - Input Bias	30	pA
Voltage - Input Offset	400	µV
Current - Supply	5.6	mA
Current - Output / Channel	36	mA
Voltage - Supply Span (Min)	9	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the OP249GS-REEL is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Direct Equivalents (Identical Electrical Performance): Parts that maintain the same amplifier type (J-FET), circuit count (2), slew rate (22V/µs), gain bandwidth product (4.7 MHz), input bias current (30 pA), input offset voltage (400 µV), supply current (5.6 mA), output current per channel (36 mA), and supply voltage range (9V to 36V) are classified as direct equivalents. These parts differ only in packaging format (Tape & Reel versus bulk) or product status (Active versus Obsolete).

Functional Alternatives (Compatible Electrical Parameters Within Operating Range): Parts that share the same J-FET amplifier type, dual-circuit configuration, and 8-SOIC package but operate within different electrical performance bands are classified as functional alternatives. These parts maintain compatibility with the 8-SOIC footprint and surface mount assembly process. Functional alternatives may exhibit variations in slew rate, gain bandwidth product, input bias current, input offset voltage, and supply current, provided they remain within acceptable operating ranges for the application.

Performance-Enhanced Alternatives (Superior Specifications): Parts that exceed the electrical performance of the OP249GS-REEL while maintaining J-FET amplifier architecture and 8-SOIC packaging are classified as performance-enhanced alternatives. These parts offer improved slew rate, higher gain bandwidth product, lower input bias current, or reduced input offset voltage, and are suitable for applications requiring enhanced performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
OP249GS-REEL	Analog Devices	J-FET	2	22	4.7	30	400	5.6	36	9	36	-40 to 85	8-SOIC	Obsolete
OP249GSZ-REEL	Analog Devices	J-FET	2	22	4.7	30	400	5.6	36	9	36	-40 to 85	8-SOIC	Active
ADA4610-2BRZ-RL	Analog Devices	J-FET	2	61	16.3	5	200	3.2	79	10	30	-40 to 125	8-SOIC	Active
LT1057IS8#PBF	Analog Devices	J-FET	2	13	5	7	220	3.4	—	20	36	-40 to 85	8-SOIC	Active
LT1057IS8#TRPBF	Analog Devices	J-FET	2	13	5	7	220	3.4	—	20	36	-40 to 85	8-SOIC	Active
LT1057S8#PBF	Analog Devices	J-FET	2	13	5	7	220	3.4	—	20	36	0 to 70	8-SOIC	Active
LT1057S8#TRPBF	Analog Devices	J-FET	2	13	5	7	220	3.4	—	20	36	0 to 70	8-SOIC	Active
LT1113CS8#PBF	Analog Devices	J-FET	2	3.9	5.6	300	550	10.6	—	9	40	-40 to 85	8-SOIC	Active
LT1113CS8#TRPBF	Analog Devices	J-FET	2	3.9	5.6	300	550	10.6	—	9	40	-40 to 85	8-SOIC	Active
LT1169CS8#PBF	Analog Devices	J-FET	2	4.2	5.3	4	600	10.6	—	9	40	0 to 70	8-SOIC	Active
LT1169CS8#TRPBF	Analog Devices	J-FET	2	4.2	5.3	4	600	10.6	—	9	40	0 to 70	8-SOIC	Active

Engineering Selection Recommendations

Direct Replacement (Recommended for Obsolescence Mitigation): The OP249GSZ-REEL is the primary direct replacement for the OP249GS-REEL. Both parts are manufactured by Analog Devices Inc. and maintain identical electrical specifications across all measured parameters: 22V/µs slew rate, 4.7 MHz gain bandwidth product, 30 pA input bias current, 400 µV input offset voltage, 5.6 mA supply current, and 36 mA output current per channel. The OP249GSZ-REEL is currently in Active product status, ensuring long-term availability and supply chain continuity. The primary difference is packaging format: OP249GSZ-REEL is supplied in Tape & Reel format, while OP249GS-REEL was supplied in bulk format. Both parts are RoHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Active Product Alternatives (For Extended Temperature or Enhanced Performance Requirements): The ADA4610-2BRZ-RL offers performance-enhanced specifications suitable for applications requiring superior dynamic performance. This part maintains J-FET amplifier architecture and 8-SOIC packaging but provides 61V/µs slew rate (versus 22V/µs), 16.3 MHz gain bandwidth product (versus 4.7 MHz), and 5 pA input bias current (versus 30 pA). The ADA4610-2BRZ-RL operates across -40°C to 125°C, extending the upper temperature limit by 40°C. Supply voltage range is 10V to 30V, which is narrower than the OP249GS-REEL. This part is RoHS3 Compliant and REACH Unaffected.

Functional Alternatives (For Cost-Optimized or Specialized Applications): The LT1057 series (LT1057IS8#PBF, LT1057IS8#TRPBF, LT1057S8#PBF, LT1057S8#TRPBF) provides functional compatibility with lower slew rate (13V/µs) and reduced input bias current (7 pA). These parts operate across 20V to 36V supply range and are available in both tube and tape & reel packaging. Temperature range varies: industrial grade (-40°C to 85°C) for LT1057IS8 variants and commercial grade (0°C to 70°C) for LT1057S8 variants. All LT1057 variants are RoHS3 Compliant and REACH Unaffected.

The LT1113 series (LT1113CS8#PBF, LT1113CS8#TRPBF) and LT1169 series (LT1169CS8#PBF, LT1169CS8#TRPBF) offer extended supply voltage ranges (9V to 40V) and are suitable for applications with broader voltage requirements. LT1113 operates at -40°C to 85°C with 3.9V/µs slew rate. LT1169 operates at 0°C to 70°C with 4.2V/µs slew rate and exceptionally low input bias current (4 pA). All variants are RoHS3 Compliant and REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can OP249GSZ-REEL be used as a direct replacement for OP249GS-REEL?

A: Yes. The OP249GSZ-REEL is a direct electrical equivalent with identical specifications. The primary difference is packaging format: OP249GSZ-REEL is supplied in Tape & Reel format for automated assembly, while OP249GS-REEL was supplied in bulk format. Both parts are pin-compatible and functionally interchangeable. OP249GSZ-REEL is currently in Active product status, ensuring supply availability.

Q: What is the key difference between OP249GS-REEL and ADA4610-2BRZ-RL?

A: Both are dual J-FET operational amplifiers in 8-SOIC packages, but ADA4610-2BRZ-RL offers significantly enhanced performance. The ADA4610-2BRZ-RL provides 61V/µs slew rate (versus 22V/µs), 16.3 MHz gain bandwidth product (versus 4.7 MHz), and 5 pA input bias current (versus 30 pA). The ADA4610-2BRZ-RL also features rail-to-rail output capability and operates to 125°C (versus 85°C). However, the ADA4610-2BRZ-RL supply voltage range is 10V to 30V, which is narrower than the OP249GS-REEL range of 9V to 36V.

Q: Are the LT1057 series parts suitable replacements for OP249GS-REEL?

A: The LT1057 series provides functional compatibility with the same 8-SOIC package and J-FET amplifier architecture. However, electrical performance differs: LT1057 offers lower slew rate (13V/µs versus 22V/µs) and significantly lower input bias current (7 pA versus 30 pA). The LT1057 supply voltage range is 20V to 36V, which does not support the lower 9V minimum of the OP249GS-REEL. LT1057 is suitable for applications where lower slew rate is acceptable and supply voltage remains above 20V.

Q: What is the difference between tube and tape & reel packaging for these parts?

A: Tube packaging is used for manual assembly and lower-volume applications, with parts supplied in plastic tubes. Tape & Reel packaging is used for automated pick-and-place assembly, with parts supplied on continuous tape wound on reels. Both packaging formats contain identical components; the difference is in handling and assembly method. Tape & Reel format is standard for high-volume production.

Q: Can I use LT1113 or LT1169 series if my application requires 9V minimum supply voltage?

A: Yes. Both LT1113 and LT1169 series support 9V minimum supply voltage, matching the OP249GS-REEL specification. LT1113 operates at -40°C to 85°C with 3.9V/µs slew rate and 300 pA input bias current. LT1169 operates at 0°C to 70°C with 4.2V/µs slew rate and 4 pA input bias current. Both series support supply voltage up to 40V, exceeding the OP249GS-REEL maximum of 36V. Selection depends on temperature range and input bias current requirements.

Q: Are all substitute parts RoHS3 Compliant?

A: Yes. All substitute parts listed (OP249GSZ-REEL, ADA4610-2BRZ-RL, LT1057 series, LT1113 series, and LT1169 series) are RoHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: All parts listed maintain MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly.

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