BCR 108F E6327 Equivalent & Substitute Parts

Part Overview

The BCR 108F E6327 is a pre-biased NPN bipolar junction transistor (BJT) manufactured by Infineon Technologies in the PG-TSFP-3 package. This component is classified as obsolete, indicating discontinued production and limited availability. The part operates at 50 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and is designed for surface mount applications requiring integrated base bias resistors.

Due to obsolete product status, sourcing equivalent or substitute components is necessary for ongoing production, maintenance, and new design implementations. Active substitute parts with identical or compatible electrical and mechanical parameters are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN - Pre-Biased	—
Collector Current (Ic) Max	100	mA
Collector-Emitter Breakdown Voltage (Vce)	50	V
Base Resistor (R1)	2.2	kOhms
Emitter-Base Resistor (R2)	47	kOhms
DC Current Gain (hFE) Min	70	@ 5mA, 5V
Vce Saturation Max	300	mV @ 500µA, 10mA
Collector Cutoff Current (Icbo) Max	100	nA
Transition Frequency	170	MHz
Power Dissipation Max	250	mW
Package Type	SOT-723 (PG-TSFP-3)	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCR 108F E6327 is determined by strict equivalence in the following critical parameters:

Electrical Equivalence Criteria:

Transistor type: NPN pre-biased configuration
Collector current rating: 100 mA maximum
Collector-emitter breakdown voltage: 50 V
Base resistor (R1): 2.2 kOhms
Emitter-base resistor (R2): 47 kOhms (primary criterion) or 2.2 kOhms (alternative configuration)
DC current gain (hFE): minimum 70 or higher
Vce saturation: 300 mV or lower
Collector cutoff current: 100 nA or lower
Transition frequency: 170 MHz or higher

Mechanical Equivalence Criteria:

Surface mount technology
Package compatibility: SOT-723, SOT-23-3, or SC-59 (all physically compatible in most applications)
Moisture sensitivity level: 1 (Unlimited)

Compliance Criteria:

REACH compliance status
RoHS compliance status (preferred for active parts)
ECCN classification: EAR99

Substitute parts are grouped into two categories based on emitter-base resistor configuration: R2 = 47 kOhms (direct equivalents) and R2 = 2.2 kOhms (alternative configuration with different biasing characteristics).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Ic Max (mA)	Vce (V)	R1 (kOhms)	R2 (kOhms)	hFE Min	Vce Sat Max (mV)	Icbo Max (nA)	Freq (MHz)	Power Max (mW)	Package	Status
BCR 108F E6327	Infineon Technologies	100	50	2.2	47	70	300	100	170	250	SOT-723	Obsolete
DDTC123JCA-7-F	Diodes Incorporated	100	50	2.2	47	80	300	500	250	200	SOT-23-3	Active
DTC123EM3T5G	onsemi	100	50	2.2	2.2	8	250	500	—	260	SOT-723	Active
DTC123JCAT116	Rohm Semiconductor	100	50	2.2	47	80	300	500	250	200	SOT-23-3	Active
DTC123JKAT146	Rohm Semiconductor	100	50	2.2	47	80	300	500	250	200	SOT-23-3	Active
DTC123JM3T5G	onsemi	100	50	2.2	47	80	250	500	—	260	SOT-723	Active
MMUN2235LT1G	onsemi	100	50	2.2	47	80	250	500	—	246	SOT-23-3	Active
MUN2235T1G	onsemi	100	50	2.2	47	80	250	500	—	230	SC-59	Active
NSVMMUN2235LT1G	onsemi	100	50	2.2	47	80	250	500	—	246	SOT-23-3	Active
PDTC123JT,215	Nexperia USA Inc.	100	50	2.2	47	100	100	1000	—	250	TO-236AB	Active
PDTC123JT,235	Nexperia USA Inc.	100	50	2.2	47	100	100	1000	—	250	TO-236AB	Active

Engineering Selection Recommendations

Primary Substitutes (R2 = 47 kOhms, Direct Equivalents):

The following parts maintain identical base and emitter-base resistor values (2.2 kOhms and 47 kOhms respectively) and are recommended as direct replacements:

DDTC123JCA-7-F (Diodes Incorporated): Active status, SOT-23-3 package, 250 MHz transition frequency, RoHS3 compliant. Suitable for applications requiring higher frequency performance than the original 170 MHz specification.
DTC123JCAT116 (Rohm Semiconductor): Active status, SOT-23-3 package, 250 MHz transition frequency, RoHS3 compliant. High inventory availability (1094 pcs).
DTC123JKAT146 (Rohm Semiconductor): Active status, SOT-23-3 package, 250 MHz transition frequency, RoHS3 compliant. Highest inventory availability among Rohm options (50400 pcs).
DTC123JM3T5G (onsemi): Active status, SOT-723 package (same as original), 260 mW power rating, RoHS3 compliant. Maintains original package form factor.
MMUN2235LT1G (onsemi): Active status, SOT-23-3 package, 246 mW power rating, RoHS3 compliant. High inventory availability (44400 pcs).
MUN2235T1G (onsemi): Active status, SC-59 package, 230 mW power rating, RoHS3 compliant.
NSVMMUN2235LT1G (onsemi): Active status, SOT-23-3 package, AEC-Q101 automotive qualification, RoHS3 compliant. Suitable for automotive applications.
PDTC123JT,215 (Nexperia USA Inc.): Active status, TO-236AB package, superior Vce saturation (100 mV vs. 300 mV), RoHS3 compliant. High inventory availability (105052 pcs).
PDTC123JT,235 (Nexperia USA Inc.): Active status, TO-236AB package, superior Vce saturation (100 mV vs. 300 mV), RoHS3 compliant. High inventory availability (101449 pcs).

Alternative Configuration (R2 = 2.2 kOhms):

DTC123EM3T5G (onsemi): Active status, SOT-723 package, alternative biasing configuration. Not recommended as direct replacement due to different emitter-base resistor value affecting circuit biasing characteristics.

Package Compatibility Notes:

All substitute parts are surface mount devices with compatible pinouts. SOT-723 packages are physically smaller than SOT-23-3 and SC-59 packages. TO-236AB is equivalent to SOT-23-3. PCB layout modifications may be required when transitioning between different package types.

Compliance Status:

All active substitute parts are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original BCR 108F E6327 is REACH unaffected but lacks RoHS certification due to obsolete status.

Frequently Asked Questions (FAQ)

Q1: Can I use PDTC123JT,215 or PDTC123JT,235 as direct replacements for BCR 108F E6327?

A: Yes, these parts are electrically compatible. Both maintain the required 2.2 kOhms base resistor and 47 kOhms emitter-base resistor. The Nexperia parts offer superior Vce saturation performance (100 mV vs. 300 mV), which may improve switching speed in some applications. The TO-236AB package is mechanically compatible with SOT-23-3 footprints on most PCBs.

Q2: What is the difference between DTC123JCAT116 and DTC123JKAT146?

A: Both are Rohm Semiconductor pre-biased NPN transistors with identical electrical specifications (100 mA, 50 V, 2.2 kOhms/47 kOhms resistors, 250 MHz). The primary difference is packaging designation (SST3 vs. SMT3) and inventory availability. DTC123JKAT146 has significantly higher stock (50400 pcs vs. 1094 pcs).

Q3: Why is DTC123EM3T5G listed as a substitute if it has different resistor values?

A: DTC123EM3T5G is included in the provided substitute list but is not recommended as a direct replacement. The emitter-base resistor value of 2.2 kOhms (versus 47 kOhms in the original) creates different biasing characteristics and circuit behavior. This part is suitable only for applications specifically designed for the alternative resistor configuration.

Q4: Can I interchange SOT-723, SOT-23-3, and SC-59 packages on the same PCB?

A: No. While all three are surface mount packages with compatible electrical pinouts, they have different physical dimensions and footprints. PCB layout modifications are required when changing package types. SOT-723 is the smallest, SOT-23-3 and SC-59 are larger. Verify footprint compatibility before substitution.

Q5: Which substitute offers the best performance improvement over the original BCR 108F E6327?

A: The Nexperia PDTC123JT series (PDTC123JT,215 and PDTC123JT,235) offers the most significant performance improvement with Vce saturation of 100 mV compared to the original 300 mV specification. This reduces power dissipation in saturation mode and improves switching characteristics. Additionally, these parts have superior collector cutoff current specifications (1 µA vs. 100 nA).

Q6: Are automotive-grade substitutes available?

A: Yes. NSVMMUN2235LT1G from onsemi is AEC-Q101 qualified for automotive applications. This part maintains all electrical equivalence parameters and is suitable for automotive circuit designs requiring pre-biased NPN transistors.

Q7: What is the significance of the 170 MHz vs. 250 MHz transition frequency difference?

A: Transition frequency (fT) indicates the frequency at which current gain drops to unity. The original BCR 108F E6327 specifies 170 MHz. Most active substitutes offer 250 MHz or higher, providing greater frequency headroom. For applications operating below 170 MHz, this difference is not critical. For higher-frequency applications, the improved specification is beneficial.

Q8: Should I prioritize inventory availability when selecting a substitute?

A: Inventory availability is a practical consideration for production continuity. Parts with higher stock levels (PDTC123JT,235 with 101449 pcs, DTC123JKAT146 with 50400 pcs) offer better supply security. However, electrical and mechanical compatibility must remain the primary selection criteria.

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