BCR141E6327HTSA1 Equivalent & Substitute Parts

Part Overview

The BCR141E6327HTSA1 is a pre-biased NPN bipolar junction transistor (BJT) manufactured by Infineon Technologies in SOT-23-3 surface mount packaging. This device integrates internal biasing resistors (22 kOhms base and 22 kOhms emitter-base) to simplify circuit design in switching and amplification applications. The part operates at 50 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and 250 mW power dissipation capability.

The BCR141E6327HTSA1 is designated as Last Time Buy status, indicating discontinued production. Equivalent substitute parts are available from multiple manufacturers including Diodes Incorporated, onsemi, Nexperia USA Inc., and Rohm Semiconductor, all offering active product status with comparable electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN - Pre-Biased	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Resistor - Base (R1)	22	kOhms
Resistor - Emitter Base (R2)	22	kOhms
DC Current Gain (hFE) Min @ Ic, Vce	50 @ 5mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	300mV @ 500µA, 10mA	—
Current - Collector Cutoff (Max)	100	nA
Frequency - Transition	130	MHz
Power - Max	250	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 BCR141E6327HTSA1 is determined by the following critical parameters:

Primary Substitution Criteria:

Transistor Type: NPN - Pre-Biased
Collector-Emitter Breakdown Voltage: 50 V (minimum requirement)
Maximum Collector Current: 100 mA (minimum requirement)
Package Type: SOT-23-3 / TO-236-3 / SC-59 (mechanical compatibility)
Internal Biasing Resistor Configuration: 22 kOhms base and 22 kOhms emitter-base (functional equivalence)
Surface Mount Mounting Type
RoHS3 Compliance and MSL 1 rating

Secondary Compatibility Parameters:

DC Current Gain (hFE): Minimum 50 @ specified test conditions
Vce Saturation: Maximum 300 mV @ specified test conditions
Power Dissipation: Minimum 250 mW
Frequency - Transition: Minimum 130 MHz

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents: Parts with identical internal biasing resistor values (22 kOhms / 22 kOhms) and matching electrical performance specifications. These include MMUN2212LT1G, NSVMMUN2212LT1G, NSVMUN2212T1G, and SMUN2212T1G from onsemi.

Category B - Functional Equivalents with Modified Biasing: Parts with different internal resistor configurations but meeting or exceeding the 50 V, 100 mA, and 250 mW requirements. These include DDTC114YCA-7-F, DDTC124TCA-7-F, PDTC124TT,215, and Rohm DTC series devices. These parts require circuit evaluation to confirm functional compatibility due to altered biasing characteristics.

Parameter Comparison

Parameter	BCR141E6327HTSA1	MMUN2212LT1G	NSVMMUN2212LT1G	NSVMUN2212T1G	SMUN2212T1G	DDTC124TCA-7-F	PDTC124TT,215
Manufacturer	Infineon	onsemi	onsemi	onsemi	onsemi	Diodes Inc.	Nexperia
Transistor Type	NPN - Pre-Biased	NPN - Pre-Biased	NPN - Pre-Biased	NPN - Pre-Biased	NPN - Pre-Biased	NPN - Pre-Biased	NPN - Pre-Biased
Ic (Max)	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA
Vce Breakdown (Max)	50 V	50 V	50 V	50 V	50 V	50 V	50 V
R1 (Base)	22 kOhms	22 kOhms	22 kOhms	22 kOhms	22 kOhms	22 kOhms	22 kOhms
R2 (Emitter-Base)	22 kOhms	22 kOhms	22 kOhms	22 kOhms	22 kOhms	—	—
hFE (Min) @ Ic, Vce	50 @ 5mA, 5V	60 @ 5mA, 10V	60 @ 5mA, 10V	60 @ 5mA, 10V	60 @ 5mA, 10V	100 @ 1mA, 5V	100 @ 1mA, 5V
Vce Saturation (Max)	300mV @ 500µA, 10mA	250mV @ 300µA, 10mA	250mV @ 300µA, 10mA	250mV @ 300µA, 10mA	250mV @ 300µA, 10mA	300mV @ 500µA, 5mA	150mV @ 500µA, 10mA
Icbo (Max)	100 nA	500 nA	500 nA	500 nA	500 nA	500 nA	1 µA
Frequency - Transition	130 MHz	—	—	—	—	250 MHz	—
Power - Max	250 mW	246 mW	246 mW	230 mW	230 mW	200 mW	250 mW
Package	SOT-23-3	SOT-23-3	SOT-23-3	SC-59	SC-59	SOT-23-3	TO-236AB
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Tier 1 - Direct Substitutes (Recommended for Drop-In Replacement):

MMUN2212LT1G, NSVMMUN2212LT1G, NSVMUN2212T1G, and SMUN2212T1G from onsemi are direct functional equivalents with identical internal biasing resistor values (22 kOhms / 22 kOhms). All four parts maintain 50 V breakdown voltage, 100 mA collector current capability, and surface mount packaging compatible with the BCR141E6327HTSA1. These parts carry Active product status and full RoHS3 compliance with MSL 1 rating. The primary differences are package variants (SOT-23-3 versus SC-59) and minor variations in power dissipation (230–246 mW versus 250 mW original specification). Selection between these four parts depends on PCB layout requirements and available package footprints.

Tier 2 - Functional Equivalents with Biasing Modifications:

DDTC124TCA-7-F (Diodes Incorporated) and PDTC124TT,215 (Nexperia USA Inc.) meet the core voltage and current requirements but feature different internal biasing configurations. DDTC124TCA-7-F contains 22 kOhms base resistor only, while PDTC124TT,215 does not specify emitter-base resistor value in the provided data. Both parts deliver 50 V breakdown, 100 mA collector current, and 250 MHz transition frequency (exceeding the 130 MHz original specification). DDTC124TCA-7-F is available in higher inventory (32,529 pcs) and carries Active status. PDTC124TT,215 includes AEC-Q100 automotive qualification. These parts are suitable for applications where the modified biasing does not conflict with circuit design requirements.

Tier 3 - Current-Limited Alternatives:

DTC114EKAT146 (Rohm Semiconductor) and DTC115EKAT146 (Rohm Semiconductor) provide 50 V breakdown voltage but with reduced maximum collector current (50 mA and 20 mA respectively). These parts are appropriate only for applications where the original 100 mA specification exceeds actual circuit requirements. DTC114EKAT146 offers the highest inventory availability (1,103,100 pcs) among all substitute options.

Compliance and Availability Considerations:

All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original BCR141E6327HTSA1 specifications. onsemi parts (MMUN2212LT1G, NSVMMUN2212LT1G, NSVMUN2212T1G, SMUN2212T1G) provide the most direct functional equivalence with highest inventory availability for NSVMMUN2212LT1G (95,300 pcs). Diodes Incorporated DDTC124TCA-7-F offers strong inventory support (32,529 pcs) with manufacturer recommendation status. Rohm DTC series devices provide the largest inventory pool but with current limitations.

Frequently Asked Questions (FAQ)

Q: Can MMUN2212LT1G directly replace BCR141E6327HTSA1 in existing designs?

A: Yes. MMUN2212LT1G is a direct functional equivalent with identical internal biasing resistor values (22 kOhms / 22 kOhms), matching 50 V breakdown voltage, 100 mA collector current, and surface mount SOT-23-3 packaging. The primary consideration is package footprint compatibility. Both parts use TO-236-3 / SOT-23-3 pinout, ensuring mechanical and electrical compatibility without circuit modification.

Q: What is the difference between SOT-23-3 and SC-59 packages?

A: SOT-23-3 and SC-59 are equivalent package designations for the same three-lead surface mount form factor (TO-236-3). NSVMUN2212T1G and SMUN2212T1G are specified with SC-59 supplier device package designation, while MMUN2212LT1G and NSVMMUN2212LT1G use SOT-23-3 designation. All four parts are mechanically and electrically compatible with the original BCR141E6327HTSA1 SOT-23-3 package.

Q: Why do some substitute parts have different internal resistor configurations?

A: Pre-biased BJTs are available in multiple biasing configurations to serve different application requirements. The BCR141E6327HTSA1 uses 22 kOhms / 22 kOhms biasing for moderate switching speeds and moderate base current requirements. DDTC124TCA-7-F uses 22 kOhms base resistor only, altering the biasing characteristics. DTC114EKAT146 uses 10 kOhms / 10 kOhms for faster switching. DTC123EKAT146 uses 2.2 kOhms / 2.2 kOhms for high-speed applications. Selection depends on circuit requirements for switching speed, base current, and saturation characteristics.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference carry ROHS3 Compliant status, matching the original BCR141E6327HTSA1 specification. All parts also maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture protection requirements during storage or handling.

Q: What is the significance of "Last Time Buy" status for BCR141E6327HTSA1?

A: Last Time Buy status indicates that Infineon Technologies has discontinued production of the BCR141E6327HTSA1. The original inventory of 2,100 pcs represents the final available stock. Substitute parts from onsemi, Diodes Incorporated, Nexperia USA Inc., and Rohm Semiconductor all carry Active product status, ensuring long-term availability and continued manufacturing support.

Q: Can DTC114EKAT146 or DTC115EKAT146 be used as substitutes?

A: DTC114EKAT146 and DTC115EKAT146 are functional alternatives only for applications where the reduced maximum collector current (50 mA and 20 mA respectively) does not exceed circuit requirements. The original BCR141E6327HTSA1 specifies 100 mA maximum collector current. These Rohm parts are not direct substitutes but may be suitable for current-limited applications. DTC123EKAT146 from Rohm maintains the 100 mA specification with different biasing resistors (2.2 kOhms / 2.2 kOhms).

Q: What inventory considerations apply to substitute selection?

A: NSVMMUN2212LT1G (onsemi) offers the highest inventory availability at 95,300 pcs. DDTC124TCA-7-F (Diodes Incorporated) provides 32,529 pcs with manufacturer recommendation status. DTC114EKAT146 (Rohm Semiconductor) offers the largest total inventory pool at 1,103,100 pcs but with reduced collector current specification. MMUN2212LT1G, NSVMUN2212T1G, and SMUN2212T1G from onsemi provide moderate inventory levels (1,440, 4,400, and 698 pcs respectively) with direct functional equivalence.

Q: Are automotive-grade alternatives available?

A: Yes. PDTC124TT,215 (Nexperia USA Inc.) carries AEC-Q100 automotive qualification and Grade designation. This part meets 50 V breakdown, 100 mA collector current, and 250 mW power dissipation specifications with automotive-level reliability certification. PDTC124TT,215 is suitable for automotive and industrial applications requiring AEC-Q100 compliance.

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