2SA1812T100Q Equivalent & Substitute Parts Reference

Part Overview

The 2SA1812T100Q, produced by Rohm Semiconductor, is a PNP bipolar junction transistor within the Transistors, Bipolar (BJT) category. This device is designed for surface mount applications and features a collector-emitter breakdown voltage of 400 V, collector current up to 500 mA, and a transition frequency of 12MHz. The 2SA1812T100Q is currently obsolete, making the identification of alternative models necessary for design continuity, maintenance, or production where this component is required.

Substiute Parts

2SA1812T100Q

Rohm SemiconductorIn Stock: 1586652SA1812T100Q Datasheet

Current PartRFQ

2DA1971-7

Diodes IncorporatedIn Stock: 45882DA1971-7 Datasheet

SimilarRFQ

2SA1971(TE12L,F)

Toshiba Semiconductor and StorageIn Stock: 43312SA1971(TE12L,F) Datasheet

SimilarRFQ

FCX558TA

Diodes IncorporatedIn Stock: 10166FCX558TA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Selection of substitute parts for the 2SA1812T100Q is strictly based on matching the following allowed parameters: transistor type (PNP), maximum collector current, maximum collector-emitter breakdown voltage, Vce saturation, collector cutoff current, minimum DC current gain at specified Ic and Vce, power rating, transition frequency, operating temperature, mounting type, package/case, and compliance (RoHS, MSL, REACH). Only parts matching or exceeding these specifications within the same transistor category are included.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed (2DA1971-7, 2SA1971(TE12L,F), FCX558TA) are active products featuring ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH unaffected status, equivalent to the original 2SA1812T100Q. These compliance attributes ensure suitability for environmental and regulatory requirements matching the source component.

Frequently Asked Questions (FAQ)

Q1: Which key parameters must match for a 2SA1812T100Q substitute?
A: Substitute selection requires matching transistor type, maximum collector current, collector-emitter breakdown voltage, DC current gain, Vce saturation, cutoff current, mounting type, package/case, and applicable compliance standards.

Q2: Are package/case differences significant for direct substitution?
A: All listed substitutes use a TO-243AA package, matching the original for mechanical compatibility in surface mount applications.

Q3: Can a part with lower collector current be a suitable substitute?
A: FCX558TA has a maximum collector current of 200 mA, which may only be suitable if application requirements do not exceed this rating.

Q4: Should compliance attributes be checked for every substitute?
A: Yes, all listed substitutes are ROHS3 compliant, meet MSL 1 (Unlimited), and are REACH unaffected, matching regulatory compliance of the 2SA1812T100Q.

Q5: Does the transition frequency or power rating influence substitution eligibility?
A: Only models matching or exceeding the minimum key parameters and included in the provided list are eligible for substitution. Transition frequency and power rating are included strictly as specified.