BCR523UE6433HTMA1 Equivalent & Substitute Parts

Part Overview

The BCR523UE6433HTMA1 is a pre-biased dual NPN bipolar transistor manufactured by Infineon Technologies in SC-74 surface mount packaging. This component integrates two NPN transistors with internal biasing resistors, designed for applications requiring compact switching and amplification functionality.

The BCR523UE6433HTMA1 carries a "Not For New Designs" product status, indicating that Infineon has discontinued active development and support for this part number. This status necessitates identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility while offering active product support and improved availability.

Substiute Parts

BCR523UE6433HTMA1

Infineon TechnologiesIn Stock: 809BCR523UE6433HTMA1 Datasheet

Current PartRFQ

PIMN31,115

Nexperia USA Inc.In Stock: 38754PIMN31,115 Datasheet

DirectRFQ

PIMC31,115

Nexperia USA Inc.In Stock: 262780PIMC31,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BCR523UE6433HTMA1 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Transistor configuration: 2 NPN - Pre-Biased (Dual)
• Maximum collector current: 500 mA
• Maximum collector-emitter breakdown voltage: 50 V
• Base resistor (R1): 1 kOhms
• Emitter-base resistor (R2): 10 kOhms
• DC current gain (hFE) minimum: 70 @ 50mA, 5V
• Vce saturation maximum: 300 mV @ 2.5mA, 50mA
• Package type: SC-74 / SOT-457 surface mount

Identified Substitutes:

PIMN31,115 (Nexperia USA Inc.) qualifies as a direct electrical substitute. This part maintains identical electrical specifications across all critical parameters and is housed in the same SC-74 / SOT-457 package. The PIMN31,115 is classified as Active product status with AEC-Q100 automotive qualification, providing enhanced reliability and ongoing manufacturer support.

PIMC31,115 (Nexperia USA Inc.) represents an alternative configuration substitute. While this part shares the same electrical performance envelope and package type, it differs in transistor configuration: it contains 1 NPN and 1 PNP transistor rather than 2 NPN transistors. This configuration difference restricts its use to applications where the complementary transistor pair functionality is required or beneficial. The PIMC31,115 is Active product status with AEC-Q100 automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Configuration):

The PIMN31,115 is the primary substitute for the BCR523UE6433HTMA1. Both parts maintain the 2 NPN pre-biased dual transistor configuration with identical electrical specifications. The PIMN31,115 offers the advantage of Active product status, ensuring ongoing manufacturer support, improved long-term availability, and compliance with automotive qualification standards (AEC-Q100). The increased maximum power rating (420 mW versus 330 mW) provides additional thermal margin without affecting circuit operation. This part is suitable for direct pin-for-pin replacement in existing designs.

For Alternative Configuration Applications:

The PIMC31,115 is applicable only in designs where the complementary NPN/PNP configuration provides functional benefit or where circuit topology specifically requires mixed transistor types. This part shares identical electrical performance parameters and package compatibility but introduces a different transistor pairing. Selection of PIMC31,115 requires circuit-level analysis to confirm functional equivalence. Both Nexperia substitutes carry Active product status and AEC-Q100 automotive qualification.

Compliance Considerations:

All three parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and identical regulatory classifications (ECCN: EAR99; HTSUS: 8541.21.0095). The transition from Infineon BCR523UE6433HTMA1 to Nexperia alternatives does not introduce compliance barriers for existing applications.

Frequently Asked Questions (FAQ)

Q: Can PIMN31,115 replace BCR523UE6433HTMA1 in existing designs without circuit modification?

A: Yes. The PIMN31,115 maintains identical transistor configuration (2 NPN pre-biased), electrical specifications, and SC-74 / SOT-457 package geometry. Pin-for-pin replacement is supported without circuit redesign.

Q: What is the difference between PIMN31,115 and PIMC31,115?

A: PIMN31,115 contains two NPN transistors (matching BCR523UE6433HTMA1 configuration). PIMC31,115 contains one NPN and one PNP transistor. Both share identical electrical performance parameters and package type. Selection depends on circuit topology requirements.

Q: Why does the BCR523UE6433HTMA1 carry "Not For New Designs" status?

A: This status indicates Infineon has discontinued active development and support for this part. Nexperia alternatives (PIMN31,115 and PIMC31,115) carry Active status with ongoing manufacturer support and improved availability.

Q: Are the Nexperia substitutes compatible with automotive applications?

A: Yes. Both PIMN31,115 and PIMC31,115 carry AEC-Q100 automotive qualification and Automotive grade designation, meeting automotive reliability and qualification requirements.

Q: What is the significance of the increased power rating in substitute parts (420 mW vs. 330 mW)?

A: The higher power rating in PIMN31,115 and PIMC31,115 provides additional thermal margin and operational headroom. This does not affect circuit operation in designs originally specified for 330 mW; it only provides enhanced reliability under thermal stress conditions.

Q: Do the substitute parts require different PCB footprints?

A: No. All three parts use SC-74 / SOT-457 package geometry. PCB footprints and assembly processes remain unchanged.

Q: What inventory considerations apply to these substitutes?

A: PIMN31,115 maintains 38,699 units in stock. PIMC31,115 maintains 262,680 units in stock. Both represent significantly higher availability compared to the legacy BCR523UE6433HTMA1 (757 units, Not For New Designs status).