BCR 148F E6327 Equivalent & Substitute Parts

Part Overview

The BCR 148F E6327 is a pre-biased NPN bipolar junction transistor (BJT) manufactured by Infineon Technologies in the SOT-723 package. This component integrates internal base and emitter resistors (47 kOhms each) for simplified circuit design in switching and amplification applications. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN - Pre-Biased	—
Maximum Collector Current (Ic)	100	mA
Collector-Emitter Breakdown Voltage (VCEO)	50	V
Base Resistor (R1)	47	kOhms
Emitter-Base Resistor (R2)	47	kOhms
DC Current Gain (hFE) @ Ic, Vce	70 @ 5mA, 5V	—
Saturation Voltage (Vce sat) @ Ib, Ic	300mV @ 500µA, 10mA	—
Transition Frequency (fT)	100	MHz
Maximum Power Dissipation	250	mW
Package Type	SOT-723	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCR 148F E6327 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor type: NPN pre-biased configuration
Maximum collector current: 100 mA
Collector-emitter breakdown voltage: 50 V
Base and emitter-base resistor values: 47 kOhms (primary group) or 22 kOhms (secondary group)
DC current gain range: minimum 60 at specified test conditions
Saturation voltage: 250–300 mV at defined bias points
Mounting type: Surface mount
Moisture sensitivity: MSL 1

Package Compatibility Groups:

Group 1 – SOT-723 Package (Direct Footprint Match):

DTC144EM3T5G (onsemi)
DTC144TM3T5G (onsemi)

Group 2 – SOT-23-3 Package (Mechanical Variant, Same Pin Configuration):

DTC144ECA-TP (Micro Commercial Co)
MMUN2212LT1G (onsemi) – 22 kOhms resistors
MMUN2213LT1G (onsemi) – 47 kOhms resistors
NSVMMUN2212LT1G (onsemi) – 22 kOhms resistors
SMMUN2213LT3G (onsemi) – 47 kOhms resistors, automotive grade
SMUN2213T1G (onsemi) – SC-59 package variant, automotive grade

Group 3 – SC-59 Package (Larger Footprint, Same Pin Configuration):

MUN2213T1G (onsemi)

Substitutes within each group share identical electrical specifications and pin configurations. Cross-group substitution requires PCB layout modification to accommodate different package dimensions.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	VCEO (Max) V	R1 kOhms	R2 kOhms	hFE @ 5mA, 10V	Vce sat (Max) mV	fT MHz	P (Max) mW	Package	Status
BCR 148F E6327	Infineon	100	50	47	47	70 @ 5V	300	100	250	SOT-723	Obsolete
DTC144EM3T5G	onsemi	100	50	47	47	80 @ 10V	250	—	260	SOT-723	Active
DTC144TM3T5G	onsemi	100	50	47	—	120 @ 10V	250	—	260	SOT-723	Active
DTC144ECA-TP	Micro Commercial Co	100	50	47	47	68 @ 5V	300	250	200	SOT-23	Active
MMUN2212LT1G	onsemi	100	50	22	22	60 @ 10V	250	—	246	SOT-23-3	Active
MMUN2213LT1G	onsemi	100	50	47	47	80 @ 10V	250	—	246	SOT-23-3	Active
MUN2213T1G	onsemi	100	50	47	47	80 @ 10V	250	—	338	SC-59	Active
NSVMMUN2212LT1G	onsemi	100	50	22	22	60 @ 10V	250	—	246	SOT-23-3	Active
SMMUN2213LT3G	onsemi	100	50	47	47	80 @ 10V	250	—	246	SOT-23-3	Active
SMUN2213T1G	onsemi	100	50	47	47	80 @ 10V	250	—	230	SC-59	Active

Engineering Selection Recommendations

For Direct Replacement (SOT-723 Package):

DTC144EM3T5G and DTC144TM3T5G are the primary alternatives when PCB layout requires the SOT-723 form factor. Both are manufactured by onsemi with active product status and RoHS3 compliance. DTC144EM3T5G maintains closest electrical alignment with the original BCR 148F E6327, featuring identical 47 kOhm resistor values and comparable DC current gain (80 vs. 70). DTC144TM3T5G offers higher current gain (120) and lower saturation voltage (250 mV), suitable for applications requiring faster switching response.

For SOT-23-3 Package Substitution:

MMUN2213LT1G and SMMUN2213LT3G provide electrical equivalence with 47 kOhm resistor matching. MMUN2213LT1G is standard industrial grade; SMMUN2213LT3G carries automotive qualification (AEC-Q101) for temperature-cycled environments. Both deliver 80 hFE and 250 mV saturation voltage. MMUN2212LT1G and NSVMMUN2212LT1G feature 22 kOhm resistors, altering circuit bias characteristics and requiring application verification before deployment.

For SC-59 Package Substitution:

MUN2213T1G and SMUN2213T1G maintain 47 kOhm resistor configuration with identical electrical parameters. SMUN2213T1G includes automotive qualification (AEC-Q101). The SC-59 package provides larger thermal footprint (338 mW and 230 mW maximum power dissipation respectively) compared to SOT-723 (250 mW), enabling higher power applications.

Compliance Considerations:

All recommended substitutes are RoHS3 compliant and REACH unaffected. MSL rating of 1 (unlimited) applies uniformly across all alternatives, eliminating moisture sensitivity constraints. ECCN classification remains EAR99 for all parts.

Frequently Asked Questions (FAQ)

Q1: Can DTC144EM3T5G directly replace BCR 148F E6327 without circuit modification?

A: Yes, within the constraint that both parts use SOT-723 packaging. Electrical parameters align within acceptable tolerances: identical 47 kOhm resistors, 100 mA collector current, 50 V breakdown voltage, and comparable DC current gain (80 vs. 70). Saturation voltage improves from 300 mV to 250 mV, reducing power dissipation in switching applications. No circuit redesign is required.

Q2: What is the difference between MMUN2213LT1G and MMUN2212LT1G?

A: The primary difference is internal resistor configuration. MMUN2213LT1G contains 47 kOhm base and emitter-base resistors, matching the BCR 148F E6327 bias network. MMUN2212LT1G uses 22 kOhm resistors, resulting in higher base current and faster switching but altered DC operating point. Selection depends on circuit bias requirements; direct substitution is not interchangeable without application analysis.

Q3: Can I use SOT-23-3 package parts as replacements for SOT-723?

A: Electrically, yes. Mechanically, no without PCB redesign. SOT-23-3 and SOT-723 share identical three-pin configurations (base, collector, emitter) and electrical specifications. However, SOT-23-3 has larger physical dimensions. PCB footprint, solder pad layout, and component placement must be modified. Verify available board space before committing to this substitution path.

Q4: What is the advantage of automotive-grade parts (SMMUN2213LT3G, SMUN2213T1G)?

A: Automotive-grade parts carry AEC-Q101 qualification, indicating validation for temperature cycling, thermal shock, and extended operating ranges typical in automotive environments. These parts undergo additional reliability testing. For non-automotive applications, standard industrial-grade equivalents (MMUN2213LT1G, MUN2213T1G) provide identical electrical performance at lower cost.

Q5: Why does DTC144TM3T5G show higher hFE (120) than other alternatives?

A: DTC144TM3T5G is a higher-gain variant within the DTC144 family. The "TM" suffix indicates optimized current gain characteristics. This higher hFE (120 @ 5mA, 10V vs. 70–80 for other parts) results in faster base current response and reduced base drive requirements. Applications sensitive to switching speed benefit from this variant; however, circuit bias networks may require adjustment to maintain stable operating points.

Q6: Are all substitutes RoHS3 compliant?

A: Yes. All recommended substitute parts carry RoHS3 compliance status. The BCR 148F E6327, though obsolete, is also REACH unaffected. Compliance uniformity across all alternatives eliminates regulatory constraints in part selection.

Q7: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. These components do not absorb significant moisture during storage and do not require pre-reflow baking cycles. This simplifies supply chain handling and reduces manufacturing process complexity compared to higher MSL ratings.

Q8: Can I substitute parts across different package types in the same design?

A: No. While SOT-723, SOT-23-3, and SC-59 packages share identical pin configurations, physical dimensions differ significantly. PCB footprints, solder pad spacing, and component placement are package-specific. Cross-package substitution requires full PCB redesign. Within-package substitution (e.g., SOT-723 to SOT-723) requires only component swapping.

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