BD898-S Equivalent & Substitute Parts Reference

Part Overview

The BD898-S from Bourns Inc. is a PNP Darlington bipolar junction transistor (BJT) in the TO-220 package. Core electrical specifications include a 60 V maximum collector-emitter breakdown voltage, a maximum collector current of 8 A, and a minimum DC current gain (hFE) of 750 at 3A, 3V. With a 2 W maximum power dissipation and an operating temperature range of -65°C to 150°C, BD898-S was suitable for high current, general-purpose switching and amplification designs. The product status is listed as obsolete, warranting the need for compatible alternatives or substitutes with equivalent electrical and mechanical parameters.

Substiute Parts

BD898-S

Bourns Inc.In Stock: 1005BD898-S Datasheet

Current PartRFQ

TIP105

NTE Electronics, IncIn Stock: 44255TIP105 Datasheet

SimilarRFQ

TIP125

NTE Electronics, IncIn Stock: 31192TIP125 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for BD898-S are selected strictly based on congruence of the following parameters: transistor type (PNP - Darlington), collector current rating, collector-emitter breakdown voltage, DC current gain, collector cutoff current, mounting type, and package/case format. All substitutes listed offer TO-220-3 packaging and through-hole mounting for direct PCB replacement. Product status, inventory availability, and environmental compliance are also considered for selection.

Parameter Comparison

Engineering Selection Recommendations

The BD898-S is obsolete but supports RoHS3 compliance. Substitute options TIP105 and TIP125 are listed as active and available in high inventory, but they are not RoHS compliant. When substitution decisions require adherence to RoHS or other environmental certifications, TIP105 and TIP125 do not qualify. For applications without compliance restrictions, TIP105 and TIP125 in the TO-220-3 package offer direct mechanical fit and matching electrical characteristics.

Frequently Asked Questions (FAQ)

Q: What are the critical parameters when selecting a substitute for BD898-S?
A: The critical parameters are transistor type (PNP - Darlington), maximum collector-emitter voltage, maximum collector current, DC current gain, collector cutoff current, mounting type, and package/case format.

Q: Are the electrical characteristics of TIP105 and TIP125 compatible with BD898-S?
A: Both TIP105 and TIP125 match the PNP Darlington type, 60 V collector-emitter breakdown voltage, and through-hole TO-220-3 package. Key parameters such as DC current gain and collector cutoff current are provided and align with BD898-S values.

Q: Do substitute parts TIP105 and TIP125 meet RoHS compliance requirements?
A: TIP105 and TIP125 are specified as RoHS non-compliant. If environmental compliance is mandatory, these parts do not qualify as substitutes for BD898-S.

Q: Is the package and mounting style of the TIP105 and TIP125 compatible with BD898-S?
A: All listed substitute parts utilize the TO-220-3 package and through-hole mounting, matching the original mechanical format.

Q: Why is substitution necessary for BD898-S?
A: The BD898-S part status is obsolete, requiring the selection of alternatives based strictly on matching specified electrical and mechanical characteristics.