BCR 135F E6327 Equivalent & Substitute Parts

Part Overview

The BCR 135F E6327 is a pre-biased NPN bipolar junction transistor (BJT) manufactured by Infineon Technologies in the PG-TSFP-3 surface mount package. This device is designed for general-purpose switching and amplification applications with a maximum collector current of 100 mA and collector-emitter breakdown voltage of 50 V. The part is classified as obsolete, making identification of active equivalent and substitute components essential for ongoing production and design continuity. Substitute parts must maintain electrical compatibility across critical parameters including collector current rating, breakdown voltage, internal bias resistor values, and saturation characteristics.

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)	10	kOhms
Resistor - Emitter Base (R2)	47	kOhms
DC Current Gain (hFE) Min @ Ic, Vce	70 @ 5mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	300mV @ 500µA, 10mA	—
Current - Collector Cutoff (Max)	100	nA
Frequency - Transition	150	MHz
Power - Max	250	mW
Mounting Type	Surface Mount	—
Package / Case	SOT-723	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCR 135F E6327 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Transistor type: NPN pre-biased configuration
Maximum collector current: 100 mA
Collector-emitter breakdown voltage: 50 V minimum
Base resistor (R1): 10 kOhms
Emitter-base resistor (R2): 47 kOhms (where specified)
Saturation voltage: 300 mV or lower at specified test conditions
Collector cutoff current: 500 nA or lower
Mounting type: Surface mount
Moisture sensitivity: MSL 1 (Unlimited)

Secondary Compatibility Factors:

Package form factor: SOT-723, SOT-23-3, or SC-59 packages are mechanically compatible with appropriate PCB layout modifications
Transition frequency: 150 MHz minimum (higher frequencies acceptable)
Power dissipation: 200 mW or higher (higher ratings acceptable)
Product status: Active preferred; obsolete parts require inventory verification

Substitute parts are grouped by package type and internal bias resistor configuration. Parts with identical R1 and R2 values (10 kOhms / 47 kOhms) provide direct functional equivalence. Parts with modified R2 values (such as 10 kOhms) maintain electrical compatibility but exhibit different bias characteristics and must be evaluated for specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	R1 (kOhms)	R2 (kOhms)	hFE Min @ 5mA	Vce Sat (Max) mV	Icbo (Max) nA	Fт (MHz)	P (Max) mW	Package	Status
BCR 135F E6327	Infineon	100	50	10	47	70	300	100	150	250	SOT-723	Obsolete
DDTC114YCA-7-F	Diodes Inc.	100	50	10	47	68	300	500	250	200	SOT-23-3	Active
DTC114EM3T5G	onsemi	100	50	10	10	35	250	500	—	260	SOT-723	Active
DTC114TM3T5G	onsemi	100	50	10	—	160	250	500	—	260	SOT-723	Active
DTC114YCA-TP	Micro Commercial Co	100	—	10	47	68	300	500	250	200	SOT-23	Active
DTC114YKAT146	Rohm Semiconductor	100	50	10	47	68	300	500	250	200	SOT-23-3	Active
DTC114YM3T5G	onsemi	100	50	10	47	80	250	500	—	260	SOT-723	Active
MUN2214T3G	onsemi	100	50	10	47	80	250	500	230	230	SC-59	Active
PDTC114YTVL	Nexperia USA Inc.	100	—	10	47	100	100	1000	230	—	TO-236AB	Active
SMUN2214T1G	onsemi	100	50	10	47	80	250	500	—	230	SC-59	Active
SMUN2214T3G	onsemi	100	50	10	47	80	250	500	—	230	SC-59	Active

Engineering Selection Recommendations

Highest Compatibility Substitutes (Direct Functional Equivalents):

The following parts maintain complete electrical equivalence with the BCR 135F E6327 across all specified parameters and are classified as active products:

DTC114YKAT146 (Rohm Semiconductor): Identical bias resistor configuration (R1 = 10 kOhms, R2 = 47 kOhms), matching saturation voltage (300 mV), SOT-23-3 package. RoHS3 compliant. Highest inventory availability (689,300 pcs).
DTC114YM3T5G (onsemi): Identical bias resistor configuration, SOT-723 package (same as original), improved saturation voltage (250 mV), RoHS3 compliant. Inventory: 24,490 pcs.
DDTC114YCA-7-F (Diodes Incorporated): Identical bias resistor configuration, SOT-23-3 package, matching saturation voltage (300 mV), RoHS3 compliant. Highest inventory availability (107,200 pcs).

Package-Specific Alternatives:

SOT-723 Package (Original Form Factor): DTC114YM3T5G provides direct package compatibility with improved performance characteristics.
SC-59 Package (Larger Form Factor): MUN2214T3G and SMUN2214T1G/T3G offer SC-59 packaging with identical bias resistor values and compatible electrical specifications.

Compliance Status:

All recommended substitute parts are RoHS3 compliant and carry REACH Unaffected status, matching the regulatory profile of the original BCR 135F E6327. All parts maintain MSL 1 (Unlimited) moisture sensitivity classification.

Product Status Consideration:

The BCR 135F E6327 is classified as obsolete. All recommended substitutes are active products with confirmed inventory availability, ensuring long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q1: Can DTC114EM3T5G be used as a direct replacement for BCR 135F E6327?

DTC114EM3T5G maintains the same collector current (100 mA), breakdown voltage (50 V), and base resistor (10 kOhms) but differs in emitter-base resistor configuration (10 kOhms instead of 47 kOhms) and DC current gain (35 vs. 70 at 5 mA). This modification alters the bias point and switching characteristics. Use only if application requirements accommodate the modified gain and bias resistor values.

Q2: What is the difference between SOT-723 and SOT-23-3 packages?

SOT-723 is a smaller surface mount package than SOT-23-3. Both are three-terminal configurations suitable for pre-biased transistors. SOT-23-3 offers larger pad geometry, potentially improving solder joint reliability on older PCB designs. SOT-723 provides space savings on modern compact layouts. Electrical performance is independent of package selection.

Q3: Why does PDTC114YTVL show higher collector cutoff current (1 µA) compared to other substitutes (500 nA)?

PDTC114YTVL is qualified to AEC-Q101 automotive standards, which may impose different leakage specifications. The higher cutoff current remains within acceptable limits for most switching applications but may affect precision analog circuits requiring minimal leakage. Verify application sensitivity to leakage current before selection.

Q4: Are parts with modified R2 values (10 kOhms instead of 47 kOhms) suitable replacements?

Parts such as DTC114EM3T5G with R2 = 10 kOhms maintain functional pre-biased transistor operation but produce different bias point and switching speed characteristics. These parts are electrically compatible but not functionally equivalent. Use only if circuit design accommodates the modified bias resistor network.

Q5: Which substitute offers the best saturation voltage performance?

PDTC114YTVL and parts with 250 mV saturation voltage (DTC114EM3T5G, DTC114YM3T5G, MUN2214T3G, SMUN2214T1G/T3G) provide improved saturation performance compared to the original 300 mV specification. Lower saturation voltage reduces power dissipation in switching applications. Select based on application power budget requirements.

Q6: What inventory considerations apply to substitute selection?

DTC114YKAT146 (689,300 pcs) and DDTC114YCA-7-F (107,200 pcs) offer the highest inventory availability. MUN2214T3G (831 pcs) and SMUN2214T3G (1,477 pcs) have limited stock. Verify long-term availability with suppliers before committing to production designs.

Q7: Are all recommended substitutes RoHS3 compliant?

All active substitute parts listed carry RoHS3 compliance certification. The original BCR 135F E6327 does not specify RoHS status. Confirm RoHS compliance requirements for your application before final part selection.

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