2SA2186-AN Equivalent & Substitute Parts

Part Overview

The 2SA2186-AN is a PNP bipolar junction transistor manufactured by onsemi, rated for 50 V collector-emitter breakdown voltage and 2 A maximum collector current. This component is designed for through-hole mounting in the SC-71 package configuration and operates at frequencies up to 420 MHz with a maximum power dissipation of 900 mW.

The 2SA2186-AN is classified as an obsolete product. Locating equivalent or substitute components is necessary for applications requiring continued supply, design updates, or system maintenance where original inventory is depleted or unavailable.

Substiute Parts

2SA2186-AN

onsemiIn Stock: 70362SA2186-AN Datasheet

Current PartRFQ

2SA2126-H

onsemiIn Stock: 9352SA2126-H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SA2186-AN is evaluated based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Transistor type must be PNP
• Voltage - Collector Emitter Breakdown (Max) must be equal to or greater than 50 V
• Current - Collector (Ic) (Max) must be equal to or greater than 2 A
• DC Current Gain (hFE) (Min) must meet or exceed 200 @ 100mA, 2V
• Operating Temperature (TJ) must be equal to or greater than 150°C

Mechanical Compatibility Criteria:

• Mounting type must be Through Hole
• Package configuration must support through-hole installation

The 2SA2126-H satisfies all electrical requirements with equal or superior ratings and maintains through-hole mounting compatibility. Both components share identical collector-emitter breakdown voltage (50 V), minimum DC current gain (200 @ 100mA, 2V), and maximum operating temperature (150°C). The 2SA2126-H provides higher maximum collector current (3 A versus 2 A), making it suitable for applications requiring equal or lower current demands.

Parameter Comparison

Engineering Selection Recommendations

The 2SA2186-AN is an obsolete product with limited availability. The 2SA2126-H is an equivalent substitute that meets all specified electrical parameters and maintains through-hole mounting compatibility.

Selection Basis:

The 2SA2126-H provides electrical equivalence with the following characteristics:

• Identical collector-emitter breakdown voltage (50 V)
• Identical minimum DC current gain (200 @ 100mA, 2V)
• Identical maximum operating temperature (150°C)
• Higher maximum collector current (3 A) accommodates applications requiring 2 A or less
• Comparable transition frequency (390 MHz versus 420 MHz)

Both components are classified as REACH Unaffected and carry EAR99 export classification. The 2SA2126-H is RoHS3 Compliant, providing additional regulatory compliance for new designs and manufacturing environments requiring RoHS certification.

Package differences exist between the two components (SC-71 for 2SA2186-AN versus TO-251-3 Short Leads, IPak, TO-251AA for 2SA2126-H). Physical board layout and PCB footprint modifications are required when implementing the 2SA2126-H as a substitute.

Frequently Asked Questions (FAQ)

Q: Can the 2SA2126-H directly replace the 2SA2186-AN without circuit modifications?

A: Electrical substitution is valid based on matching or exceeding all critical parameters: collector-emitter breakdown voltage, maximum collector current, DC current gain, and operating temperature. However, package differences (SC-71 versus TO-251-3 Short Leads, IPak, TO-251AA) require PCB footprint and board layout modifications. No circuit topology changes are necessary if the physical mounting accommodation is addressed.

Q: What are the key electrical differences between these two parts?

A: The 2SA2126-H provides higher maximum collector current (3 A versus 2 A) and slightly lower transition frequency (390 MHz versus 420 MHz). Maximum power dissipation is lower in the 2SA2126-H (800 mW versus 900 mW). All other critical parameters—voltage rating, current gain, and operating temperature—are identical.

Q: Are there package compatibility considerations?

A: Yes. The 2SA2186-AN uses SC-71 package, while the 2SA2126-H uses TO-251-3 Short Leads, IPak, TO-251AA package. These are physically different configurations requiring different PCB footprints and mounting hole patterns. Mechanical redesign of the board layout is necessary for substitution.

Q: What is the inventory status of these components?

A: The 2SA2186-AN has 7006 pieces in stock as new original inventory. The 2SA2126-H has 869 pieces in stock as new original inventory. Both are classified as obsolete products.

Q: Are there regulatory or compliance differences?

A: The 2SA2126-H is RoHS3 Compliant, while the 2SA2186-AN does not specify RoHS compliance status. Both components are REACH Unaffected and carry EAR99 export classification. For applications requiring RoHS certification, the 2SA2126-H provides documented compliance.