2N5087RLRAG Equivalent & Substitute Parts

Part Overview

The 2N5087RLRAG is a PNP bipolar junction transistor (BJT) manufactured by onsemi, designed for general-purpose switching and amplification applications. This device features a 50 V collector-emitter breakdown voltage rating and a maximum collector current of 50 mA, housed in a through-hole TO-92 package. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across key parameters including voltage ratings, current specifications, and DC current gain characteristics.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) (Max)	50	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Vce Saturation (Max) @ Ib, Ic	300mV @ 1mA, 10mA	—
Current - Collector Cutoff (Max)	50	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	250 @ 100µA, 5V	—
Frequency - Transition	40	MHz
Operating Temperature Range	-55 to 150	°C
Power - Max	625	mW

Substitute Part Grouping Explanation

Substitution of the 2N5087RLRAG is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Transistor type must be PNP
Maximum collector current (Ic) must be 50 mA or greater
Collector-emitter breakdown voltage (VCEO) must be 50 V or greater
Vce saturation characteristics must match: 300 mV @ 1 mA, 10 mA
DC current gain (hFE) minimum must be 250 @ 100 µA, 5 V
Transition frequency must be 40 MHz or greater
Operating temperature range must encompass -55°C to 150°C
Collector cutoff current (ICBO) must be 50 nA or less

Mechanical Compatibility: Substitutes may differ in mounting type (through-hole versus surface mount) and package configuration, provided the electrical parameters remain equivalent. Package differences require circuit board redesign and assembly process modification.

Parameter Comparison

Parameter	2N5087RLRAG	MMBT5087LT1G	Match Status
Transistor Type	PNP	PNP	Equivalent
Current - Collector (Ic) (Max)	50 mA	50 mA	Equivalent
Voltage - Collector Emitter Breakdown (Max)	50 V	50 V	Equivalent
Vce Saturation (Max) @ Ib, Ic	300mV @ 1mA, 10mA	300mV @ 1mA, 10mA	Equivalent
Current - Collector Cutoff (Max)	50 nA	50 nA	Equivalent
DC Current Gain (hFE) (Min) @ Ic, Vce	250 @ 100µA, 5V	250 @ 100µA, 5V	Equivalent
Frequency - Transition	40 MHz	40 MHz	Equivalent
Operating Temperature Range	-55°C to 150°C	-55°C to 150°C	Equivalent
Power - Max	625 mW	300 mW	Substitute Rated Lower
Mounting Type	Through Hole	Surface Mount	Different
Package / Case	TO-92-3	SOT-23-3	Different
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

MMBT5087LT1G as Primary Substitute:

The MMBT5087LT1G is electrically equivalent to the 2N5087RLRAG across all critical transistor parameters: collector current, breakdown voltage, saturation characteristics, current gain, and transition frequency. Both devices operate across the identical temperature range and maintain equivalent DC and AC performance specifications.

The MMBT5087LT1G holds active product status from onsemi, ensuring continued availability and manufacturing support. This part is RoHS3 compliant, whereas the 2N5087RLRAG status is not specified. Both devices carry identical REACH and ECCN classifications.

Package and Mounting Considerations:

The primary difference between these parts is packaging: the 2N5087RLRAG uses a through-hole TO-92 package, while the MMBT5087LT1G uses a surface-mount SOT-23 package. This difference requires circuit board layout modification and assembly process changes. The MMBT5087LT1G is available in higher inventory quantities (125,200 pieces versus 5,300 pieces), supporting production scalability.

Power Dissipation:

The MMBT5087LT1G is rated for 300 mW maximum power dissipation, compared to 625 mW for the 2N5087RLRAG. Applications requiring sustained power dissipation above 300 mW must conduct thermal analysis to confirm the substitute part operates within safe limits.

Frequently Asked Questions (FAQ)

Q: Can the MMBT5087LT1G directly replace the 2N5087RLRAG in existing circuit boards?

A: Electrical substitution is valid; however, direct board replacement is not possible due to package differences. The 2N5087RLRAG uses a through-hole TO-92 package, while the MMBT5087LT1G uses a surface-mount SOT-23 package. Circuit board redesign and assembly process modification are required.

Q: Are the electrical characteristics identical between these two parts?

A: Yes. Both devices are PNP transistors with identical maximum collector current (50 mA), collector-emitter breakdown voltage (50 V), saturation characteristics (300 mV @ 1 mA, 10 mA), DC current gain (250 @ 100 µA, 5 V), and transition frequency (40 MHz). Operating temperature ranges are also identical (-55°C to 150°C).

Q: What is the significance of the power rating difference?

A: The 2N5087RLRAG is rated for 625 mW maximum power dissipation, while the MMBT5087LT1G is rated for 300 mW. For applications operating below 300 mW, both parts are equivalent. Applications requiring sustained power dissipation between 300 mW and 625 mW must verify that the MMBT5087LT1G thermal characteristics remain acceptable in the specific circuit environment.

Q: Why is the 2N5087RLRAG classified as obsolete?

A: The 2N5087RLRAG is listed as obsolete by the manufacturer. The MMBT5087LT1G, which is electrically equivalent and carries active product status, is the recommended alternative for new designs and ongoing production support.

Q: Are there compliance differences between these parts?

A: The MMBT5087LT1G is RoHS3 compliant. The 2N5087RLRAG compliance status is not specified in available documentation. Both parts are REACH unaffected and carry identical EAR99 ECCN classification.

Q: What inventory considerations should influence part selection?

A: The MMBT5087LT1G has significantly higher inventory availability (125,200 pieces) compared to the 2N5087RLRAG (5,300 pieces). For production continuity and supply chain stability, the MMBT5087LT1G is the preferred choice.

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