BC850CE6327HTSA1 Equivalent & Substitute Parts

Part Overview

The BC850CE6327HTSA1 is an NPN bipolar junction transistor manufactured by Infineon Technologies in SOT-23 surface mount packaging. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing production and maintenance applications. The BC850CE6327HTSA1 operates at maximum collector current of 100 mA with a collector-emitter breakdown voltage of 45 V, making it suitable for general-purpose switching and amplification circuits in consumer and industrial electronics.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max) @ Ib, Ic	600 mV @ 5 mA, 100 mA	—
Current - Collector Cutoff (Max)	15	nA
DC Current Gain (hFE) Min @ Ic, Vce	420 @ 2 mA, 5 V	—
Power - Max	330	mW
Frequency - Transition	250	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BC850CE6327HTSA1 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Transistor Type: NPN
Current - Collector (Ic) Max: 100 mA
Voltage - Collector Emitter Breakdown (Max): 45 V
DC Current Gain (hFE) Min @ Ic, Vce: 420 @ 2 mA, 5 V
Current - Collector Cutoff (Max): 15 nA
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

Vce Saturation (Max) @ Ib, Ic: 400–600 mV range acceptable
Power - Max: 225–350 mW range acceptable
Frequency - Transition: 100–300 MHz range acceptable
Operating Temperature (TJ): −55°C to 150°C range acceptable
Product Status: Active or Last Time Buy acceptable; Obsolete or Not For New Designs not recommended for new designs
Packaging Format: Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) both acceptable
Manufacturer: Multiple qualified manufacturers acceptable

Substitute parts meeting all mandatory criteria and falling within allowable variation ranges are listed below.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	Vce Sat (Max) mV	hFE (Min)	Power (Max) mW	Frequency (Max) MHz	Package	Product Status
BC850CE6327HTSA1	Infineon Technologies	100	45	600	420	330	250	SOT-23-3	Obsolete
BC847CE6433HTMA1	Infineon Technologies	100	45	600	420	330	250	SOT-23-3	Last Time Buy
BC847C,215	Nexperia USA Inc.	100	45	400	420	250	100	SOT-23-3	Active
BC847C,235	Nexperia USA Inc.	100	45	400	420	250	100	SOT-23-3	Active
BC847C-7-F	Diodes Incorporated	100	45	600	420	300	300	SOT-23-3	Active
BC847C-TP	Micro Commercial Co	100	45	500	420	225	100	SOT-23-3	Active
BC847CLT1G	onsemi	100	45	600	420	300	100	SOT-23-3	Active
BC847CT116	Rohm Semiconductor	100	45	600	420	350	200	SOT-23-3	Not For New Designs
BC850C,215	Nexperia USA Inc.	100	45	600	420	250	100	SOT-23-3	Active
BC850C,235	Nexperia USA Inc.	100	45	600	420	250	100	SOT-23-3	Active
BC850CLT1G	onsemi	100	45	600	420	225	100	SOT-23-3	Active

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

For new designs and ongoing production, the following parts are recommended based on active product status and full compliance with mandatory parameters:

BC850C,215 and BC850C,235 (Nexperia USA Inc.): Direct BC850 series equivalents with identical electrical characteristics to the main part. Both are AEC-Q101 qualified for automotive applications. Available in high inventory quantities (85,230 and 44,122 units respectively).
BC847CLT1G (onsemi): Meets all mandatory parameters with active product status. Highest inventory availability (80,100 units). Suitable for general-purpose applications.
BC850CLT1G (onsemi): BC850 series equivalent with active status. Largest inventory (254,300 units). Recommended for high-volume production requirements.
BC847C-7-F (Diodes Incorporated): Meets all mandatory parameters with highest transition frequency (300 MHz) among active substitutes. Inventory: 16,152 units.

Secondary Substitutes (Last Time Buy / Not For New Designs):

BC847CE6433HTMA1 (Infineon Technologies): Parametric equivalent from same manufacturer as main part. Last Time Buy status indicates limited availability. Suitable for replacement in existing designs only.
BC847CT116 (Rohm Semiconductor): Meets all mandatory parameters but carries Not For New Designs status. Inventory: 3,821 units. Not recommended for new production.

Compliance Verification:

All listed substitutes maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status consistent with the main part. All operate within the specified temperature range (−55°C to 150°C maximum).

Frequently Asked Questions (FAQ)

Q: Can BC847 series parts substitute for BC850 series parts?

A: Yes. Both BC847 and BC850 series transistors meet the mandatory electrical parameters specified for this application (100 mA collector current, 45 V breakdown voltage, 420 hFE minimum, SOT-23-3 package). The primary difference between series designations relates to historical manufacturing lineage rather than functional performance in equivalent circuits.

Q: What is the significance of the packaging suffix (,215 vs ,235)?

A: The numeric suffix indicates packaging format. Suffix ,215 denotes Cut Tape (CT) & Digi-Reel® packaging, while suffix ,235 denotes Tape & Reel (TR) packaging. Both formats contain identical components; the difference is in supply format only. Selection depends on production equipment compatibility and inventory management requirements.

Q: Are there differences between Nexperia, onsemi, and Diodes Incorporated versions?

A: All three manufacturers produce parts meeting the mandatory electrical specifications. Differences exist in transition frequency (100 MHz for Nexperia and onsemi BC847C variants, 300 MHz for Diodes BC847C-7-F), power dissipation ratings (250 mW for Nexperia, 225–300 mW for onsemi and Diodes), and Vce saturation characteristics (400 mV for Nexperia, 500–600 mV for others). These variations fall within allowable ranges and do not affect functional substitution in standard switching applications.

Q: Why is the BC847CE6433HTMA1 marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has announced end-of-life for this specific part number. Existing inventory is available but will not be replenished. This part is suitable for replacement in existing designs but should not be selected for new production. Active alternatives from other manufacturers are recommended.

Q: Is the BC847CT116 suitable for new designs?

A: No. The BC847CT116 carries Not For New Designs status, indicating the manufacturer recommends against its use in new applications. While it meets all mandatory electrical parameters, active alternatives with confirmed long-term availability should be selected instead.

Q: What is the impact of different transition frequencies (100 MHz vs 250 MHz vs 300 MHz)?

A: Transition frequency (fT) indicates the maximum frequency at which the transistor maintains useful gain. The main part specifies 250 MHz. Substitutes range from 100 MHz to 300 MHz. For applications operating below 100 MHz, all substitutes are functionally equivalent. For applications requiring operation near or above 250 MHz, select substitutes with matching or higher transition frequency (BC847C-7-F at 300 MHz or BC847CE6433HTMA1 at 250 MHz).

Q: Are automotive-grade qualifications required?

A: The main part BC850CE6327HTSA1 does not specify automotive qualification. However, BC847C,215, BC847C,235, BC850C,215, and BC850C,235 from Nexperia carry AEC-Q101 automotive qualification. These parts are suitable for both automotive and general-purpose applications. Selection of automotive-qualified parts is optional unless the application specifically requires AEC-Q101 compliance.

Q: Can I mix different manufacturers in the same production batch?

A: Yes. All listed substitutes meet identical mandatory electrical parameters and package specifications. Mixing manufacturers within a production batch is acceptable from an electrical and mechanical compatibility standpoint. However, verify that procurement, quality assurance, and traceability procedures accommodate multiple manufacturer sources.

Q: What inventory considerations should guide part selection?

A: BC850CLT1G (onsemi) offers the highest inventory (254,300 units), followed by BC847C,235 (Nexperia, 109,071 units) and BC847C-TP (Micro Commercial Co, 1,000,200 units). For high-volume or long-term production requirements, parts with larger available inventory reduce supply chain risk. For immediate or small-quantity needs, all listed active parts maintain sufficient stock.

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