BCR 162 B6327 Equivalent & Substitute Parts

Part Overview

The BCR 162 B6327 is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Infineon Technologies, designed for surface mount applications in the SOT-23-3 package. This component integrates internal base and emitter resistors, enabling simplified circuit design for switching and amplification applications. The part is rated for 50 V collector-emitter breakdown voltage, 100 mA maximum collector current, and 200 MHz transition frequency with 200 mW maximum power dissipation.

The BCR 162 B6327 is discontinued at DiGi Electronics. Equivalent and substitute parts are available from Rohm Semiconductor and other manufacturers, offering active product status with comparable or enhanced electrical characteristics and identical mechanical compatibility.

Key Parameters

Parameter	BCR 162 B6327	Unit
Transistor Type	PNP - Pre-Biased	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Resistor - Base (R1)	4.7	kOhms
Resistor - Emitter Base (R2)	4.7	kOhms
DC Current Gain (hFE) Min @ Ic, Vce	20 @ 5mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	300mV @ 500µA, 10mA	—
Current - Collector Cutoff (Max)	100	nA
Frequency - Transition	200	MHz
Power - Max	200	mW
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCR 162 B6327 is determined by the following critical parameters:

Mechanical Compatibility: All substitute parts must use the TO-236-3 / SC-59 / SOT-23-3 surface mount package to ensure PCB footprint compatibility.

Electrical Ratings: Substitute parts must meet or exceed the 50 V collector-emitter breakdown voltage and 200 mW power dissipation limits. The maximum collector current requirement (100 mA) defines the minimum current handling capability.

Pre-Biased Configuration: All substitutes must incorporate integrated base and emitter resistors. The internal resistor values (R1 and R2) determine the biasing characteristics and switching behavior. Parts with different resistor values are suitable for applications where the biasing network differs from the original 4.7 kOhm configuration.

Frequency Performance: Transition frequency of 200 MHz or higher ensures compatibility with the original part's switching speed specifications.

Compliance: All substitute parts must maintain RoHS3 compliance and MSL 1 rating for manufacturing and storage compatibility.

The substitute parts are grouped into two categories based on collector current rating:

Category A (100 mA Rating): DTA123EKAT146, DTA143ECAT116, DTA143EKAT146 — Direct current rating equivalents with varying internal resistor configurations.

Category B (Higher Current Rating): DTB113EKT146, DTB114EKT146, DTB123EKT146 — 500 mA rated parts suitable for applications requiring higher current handling with compatible biasing networks.

Category C (Lower Current Rating): DTA114EKAT146, DTA115EKAT146, DTA124EKAT146, DTA144EKAT146 — Reduced current rating parts (20–50 mA) with higher internal resistor values for lower-current applications.

Parameter Comparison

Part Number	Manufacturer	Ic Max (mA)	Vce Breakdown (V)	R1 (kOhms)	R2 (kOhms)	hFE Min @ Ic, Vce	Frequency (MHz)	Power Max (mW)	Package	Status
BCR 162 B6327	Infineon Technologies	100	50	4.7	4.7	20 @ 5mA, 5V	200	200	SOT-23-3	Discontinued
DTA114EKAT146	Rohm Semiconductor	50	50	10	10	30 @ 5mA, 5V	250	200	SOT-23-3	Active
DTA115EKAT146	Rohm Semiconductor	20	50	100	100	82 @ 5mA, 5V	250	200	SOT-23-3	Active
DTA123EKAT146	Rohm Semiconductor	100	50	2.2	2.2	20 @ 20mA, 5V	250	200	SOT-23-3	Active
DTA124EKAT146	Rohm Semiconductor	30	50	22	22	56 @ 5mA, 5V	250	200	SOT-23-3	Active
DTA143ECAT116	Rohm Semiconductor	100	50	4.7	4.7	30 @ 10mA, 5V	250	200	SOT-23-3	Active
DTA143EKAT146	Rohm Semiconductor	100	50	4.7	4.7	30 @ 10mA, 5V	250	200	SOT-23-3	Active
DTA144EKAT146	Rohm Semiconductor	30	50	47	47	68 @ 5mA, 5V	250	200	SOT-23-3	Active
DTB113EKT146	Rohm Semiconductor	500	50	1	1	33 @ 50mA, 5V	200	200	SOT-23-3	Active
DTB114EKT146	Rohm Semiconductor	500	50	10	10	56 @ 50mA, 5V	200	200	SOT-23-3	Active
DTB123EKT146	Rohm Semiconductor	500	50	2.2	2.2	39 @ 50mA, 5V	200	200	SOT-23-3	Active

Engineering Selection Recommendations

Primary Equivalent: DTA143EKAT146 (Rohm Semiconductor) is the recommended direct substitute for the BCR 162 B6327. This part maintains identical internal resistor values (4.7 kOhm R1 and R2), identical maximum collector current (100 mA), and identical voltage and power ratings. The DTA143EKAT146 offers enhanced transition frequency (250 MHz versus 200 MHz) and active product status with high inventory availability (227,300 units). RoHS3 compliance and MSL 1 rating are maintained.

Alternative Equivalent: DTA143ECAT116 (Rohm Semiconductor, SST3 package variant) provides identical electrical characteristics to DTA143EKAT146 with the same 4.7 kOhm resistor configuration and 100 mA current rating. This part is suitable where the SST3 package variant is acceptable.

Current-Matched Alternatives: DTA123EKAT146 (Rohm Semiconductor) matches the 100 mA collector current rating with lower internal resistor values (2.2 kOhm R1 and R2), suitable for applications requiring stronger base drive. This part is active with 125,100 units in stock.

Higher-Current Alternatives: DTB113EKT146, DTB114EKT146, and DTB123EKT146 (Rohm Semiconductor) provide 500 mA maximum collector current with the same 50 V voltage rating and 200 mW power dissipation. These parts are suitable for applications requiring higher current handling while maintaining the same package footprint and compliance certifications.

Lower-Current Alternatives: DTA114EKAT146, DTA115EKAT146, DTA124EKAT146, and DTA144EKAT146 (Rohm Semiconductor) are suitable for applications with reduced current requirements (20–50 mA). These parts feature higher internal resistor values and active product status with substantial inventory availability.

All recommended substitutes maintain RoHS3 compliance, MSL 1 rating, and TO-236-3 / SOT-23-3 package compatibility. Selection should be based on specific application current requirements and internal biasing network specifications.

Frequently Asked Questions (FAQ)

Q: Can DTA143EKAT146 be used as a direct replacement for BCR 162 B6327?

A: Yes. DTA143EKAT146 is electrically and mechanically compatible. Both parts feature 100 mA maximum collector current, 50 V breakdown voltage, 4.7 kOhm internal resistors (R1 and R2), 200 mW power rating, and SOT-23-3 package. DTA143EKAT146 offers higher transition frequency (250 MHz) and active product status.

Q: What is the difference between DTA143EKAT146 and DTA123EKAT146?

A: Both parts have 100 mA maximum collector current and 50 V voltage rating. DTA123EKAT146 features lower internal resistor values (2.2 kOhm R1 and R2) compared to DTA143EKAT146 (4.7 kOhm R1 and R2). Lower resistor values provide stronger base drive and faster switching. Selection depends on application biasing requirements.

Q: When should DTB113EKT146 or DTB114EKT146 be selected instead of DTA143EKAT146?

A: DTB series parts (DTB113EKT146, DTB114EKT146, DTB123EKT146) are rated for 500 mA maximum collector current, compared to 100 mA for DTA143EKAT146. Select DTB series parts only when the application requires collector currents exceeding 100 mA. All parts maintain the same 50 V voltage rating, 200 mW power dissipation, and SOT-23-3 package.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (DTA114EKAT146, DTA115EKAT146, DTA123EKAT146, DTA124EKAT146, DTA143ECAT116, DTA143EKAT146, DTA144EKAT146, DTB113EKT146, DTB114EKT146, DTB123EKT146) are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of internal resistor values (R1 and R2)?

A: Internal resistor values determine the biasing network and switching characteristics. Lower resistor values (1–2.2 kOhm) provide stronger base drive and faster switching. Higher resistor values (22–100 kOhm) reduce base current and are suitable for low-power applications. Selection must match the application circuit design.

Q: Can parts with different internal resistor values be used interchangeably?

A: No. Internal resistor values directly affect circuit biasing and switching behavior. Parts with different R1 and R2 values will produce different base currents and switching speeds. Selection must be based on application requirements and circuit design specifications.

Q: What is the difference between SMT3 and SST3 package designations?

A: Both SMT3 and SST3 refer to surface mount variants of the SOT-23-3 package. DTA143EKAT146 uses SMT3 packaging, while DTA143ECAT116 uses SST3 packaging. Both are mechanically compatible with the same PCB footprint. Selection depends on supplier availability and manufacturing specifications.

Q: Why is the BCR 162 B6327 discontinued?

A: The BCR 162 B6327 is discontinued at DiGi Electronics. Active equivalent parts from Rohm Semiconductor (DTA and DTB series) provide superior or equivalent performance with ongoing manufacturing support and higher inventory availability.

Q: What is the transition frequency, and why does it matter?

A: Transition frequency (fT) is the frequency at which the transistor's current gain drops to unity. Higher transition frequency indicates faster switching capability. BCR 162 B6327 has 200 MHz fT; most Rohm substitutes offer 250 MHz fT, providing improved high-frequency performance.

Q: Are all substitute parts available in the same quantities?

A: No. Inventory availability varies by part number. DTA143EKAT146 has 227,300 units in stock, while DTA143ECAT116 has only 2,214 units. DTB114EKT146 has 107,358 units. Verify current inventory before design selection.

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