BCR 191L3 E6327 Equivalent & Substitute Parts

Part Overview

The BCR 191L3 E6327 is a pre-biased PNP bipolar junction transistor manufactured by Infineon Technologies, designed for surface mount applications in the SC-101/SOT-883 package. This component integrates internal base and emitter resistors (22 kOhms each) to simplify circuit design and reduce component count in switching and amplification applications.

The BCR 191L3 E6327 is currently discontinued at DiGi Electronics. Equivalent substitute parts are available from active manufacturers, providing functional alternatives with comparable electrical and mechanical specifications for ongoing production and maintenance applications.

Substiute Parts

BCR 191L3 E6327

Infineon TechnologiesIn Stock: 831BCR 191L3 E6327 Datasheet

Current PartRFQ

DTA124ECAT116

Rohm SemiconductorIn Stock: 3028DTA124ECAT116 Datasheet

MFR RecommendedRFQ

PDTA124EM,315

Nexperia USA Inc.In Stock: 10952PDTA124EM,315 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BCR 191L3 E6327 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Transistor Type: PNP - Pre-Biased configuration
• Base Resistor (R1): 22 kOhms
• Emitter-Base Resistor (R2): 22 kOhms
• Maximum Collector Current: 100 mA
• Package Type: Surface mount with compatible pinout (SC-101/SOT-883 or equivalent)
• RoHS3 Compliance and MSL Level 1

Allowable Parameter Variations:

• Collector-Emitter Breakdown Voltage: Equal to or greater than 50 V (higher voltage rating acceptable)
• DC Current Gain (hFE): Minimum 50 or higher at specified test conditions
• Vce Saturation: Equal to or lower than 300 mV (lower saturation voltage acceptable)
• Maximum Power Dissipation: Equal to or greater than 250 mW
• Transition Frequency: Equal to or greater than 200 MHz

Two substitute parts meet these criteria and are available from active manufacturers with current production status.

Parameter Comparison

Engineering Selection Recommendations

PDTA124EM,315 (Nexperia USA Inc.) is the primary recommended substitute for the BCR 191L3 E6327. This part maintains identical voltage rating (50 V), identical package designation (SC-101/SOT-883), and identical power rating (250 mW). The PDTA124EM,315 offers improved performance with lower Vce saturation (150 mV vs. 300 mV) and higher transition frequency (250 MHz vs. 200 MHz). The part carries AEC-Q100 automotive qualification and is currently in active production with 10,847 pieces in stock. RoHS3 compliance and MSL Level 1 rating match the original specification.

DTA124ECAT116 (Rohm Semiconductor) is an alternative substitute with active production status and 2,944 pieces in stock. This part meets all mandatory criteria with matching internal resistor values and collector current rating. However, the maximum Collector-Emitter Breakdown Voltage is rated at 20 V, which is below the original 50 V specification. The DTA124ECAT116 is suitable only for applications where the circuit operates at voltages not exceeding 20 V. The package type differs (TO-236-3/SC-59/SOT-23-3 vs. SC-101/SOT-883), requiring PCB layout verification. Maximum power dissipation is 200 mW, which is lower than the original 250 mW rating.

For applications requiring the full 50 V voltage rating and identical package footprint, PDTA124EM,315 is the direct equivalent. For voltage-constrained applications below 20 V with package compatibility verification, DTA124ECAT116 provides an alternative.

Frequently Asked Questions (FAQ)

Q: Can the DTA124ECAT116 be used as a direct replacement for the BCR 191L3 E6327?

A: The DTA124ECAT116 meets the core pre-biased PNP configuration and internal resistor requirements. However, it has a maximum Collector-Emitter Breakdown Voltage of 20 V compared to the original 50 V. Use this part only in circuits where the maximum applied voltage does not exceed 20 V. Additionally, the package type differs (SOT-23-3 vs. SOT-883), requiring PCB footprint verification before implementation.

Q: Why is the PDTA124EM,315 recommended over the DTA124ECAT116?

A: The PDTA124EM,315 maintains the original 50 V voltage rating and identical SOT-883 package, eliminating voltage derating concerns and PCB layout modifications. It also provides superior electrical performance with lower saturation voltage (150 mV vs. 300 mV) and higher transition frequency (250 MHz vs. 200 MHz). The part is in active production with higher inventory availability.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both DTA124ECAT116 and PDTA124EM,315 are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original BCR 191L3 E6327 environmental specifications.

Q: What is the impact of the lower power rating on the DTA124ECAT116?

A: The DTA124ECAT116 has a maximum power dissipation of 200 mW compared to the original 250 mW. In applications where the transistor dissipates power approaching or exceeding 200 mW, thermal management must be verified. For typical switching applications with brief on-times, this difference may not be significant. Thermal analysis of the specific application is required.

Q: Can the package difference between DTA124ECAT116 and the original part affect circuit performance?

A: Package differences (SOT-23-3 vs. SOT-883) affect PCB footprint, trace routing, and thermal characteristics. The electrical performance of the transistor itself is not affected. However, PCB layout must be redesigned to accommodate the different package pinout and dimensions. Verify that the new package footprint is compatible with your PCB design before implementation.

Q: Is the PDTA124EM,315 suitable for automotive applications?

A: Yes. The PDTA124EM,315 carries AEC-Q100 automotive qualification, making it suitable for automotive-grade applications. The original BCR 191L3 E6327 does not specify automotive qualification.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: (1) PNP pre-biased transistor configuration, (2) 22 kOhm base and emitter-base resistors, (3) 100 mA maximum collector current, (4) compatible surface mount package, (5) RoHS3 compliance, and (6) MSL Level 1 rating. Voltage rating, power dissipation, and frequency response must meet or exceed the original specifications for the application.