BCW 67A E6327 Equivalent & Substitute Parts

Part Overview

The BCW 67A E6327 is a PNP bipolar junction transistor manufactured by Infineon Technologies, designed for surface mount applications in the SOT-23-3 package. This component operates at a maximum collector current of 800 mA with a collector-emitter breakdown voltage of 32 V and a maximum power dissipation of 330 mW. The device features a transition frequency of 200 MHz and is rated for operation up to 150°C junction temperature.

The BCW 67A E6327 is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems or redesign initiatives.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) (Max)	800	mA
Voltage - Collector Emitter Breakdown (Max)	32	V
Vce Saturation (Max) @ Ib, Ic	700 mV @ 50 mA, 500 mA	—
Current - Collector Cutoff (Max)	20	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 100 mA, 1 V	—
Power - Max	330	mW
Frequency - Transition	200	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCW 67A E6327 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Transistor type must be PNP
Collector-emitter breakdown voltage must equal or exceed 32 V
Maximum collector current must equal or exceed 800 mA
Transition frequency must equal or exceed 200 MHz
DC current gain (hFE) must meet or exceed 100 at specified test conditions
Vce saturation characteristics must be compatible with circuit requirements

Mechanical Compatibility Criteria:

Package must be SOT-23-3 (TO-236-3, SC-59)
Surface mount mounting type
Moisture sensitivity level MSL 1 or better

Compliance Criteria:

REACH compliance status
RoHS compliance status (where applicable)
Product status (active preferred for new designs; obsolete acceptable for legacy support)

The substitute parts listed below meet these criteria within the allowed electrical and mechanical parameters for PNP BJT transistors in this package category.

Parameter Comparison

Parameter	BCW 67A E6327 (Main)	BC807-40-7-F	MMBT2907ALT1G	MMBT2907ALT3G	MMBT4403-TP	MMBT4403LT1G	MMBT4403LT3G
Manufacturer	Infineon Technologies	Diodes Incorporated	onsemi	onsemi	Micro Commercial Co	onsemi	onsemi
Transistor Type	PNP	PNP	PNP	PNP	PNP	PNP	PNP
Current - Collector (Ic) (Max)	800 mA	500 mA	600 mA	600 mA	600 mA	600 mA	600 mA
Voltage - Collector Emitter Breakdown (Max)	32 V	45 V	60 V	60 V	40 V	40 V	40 V
Vce Saturation (Max) @ Ib, Ic	700 mV @ 50 mA, 500 mA	700 mV @ 50 mA, 500 mA	1.6 V @ 50 mA, 500 mA	1.6 V @ 50 mA, 500 mA	750 mV @ 50 mA, 500 mA	750 mV @ 50 mA, 500 mA	750 mV @ 50 mA, 500 mA
Current - Collector Cutoff (Max)	20 nA	100 nA	10 nA	10 nA	—	—	—
DC Current Gain (hFE) (Min)	100 @ 100 mA, 1 V	250 @ 100 mA, 1 V	100 @ 150 mA, 10 V	100 @ 150 mA, 10 V	100 @ 150 mA, 2 V	100 @ 150 mA, 2 V	100 @ 150 mA, 2 V
Power - Max	330 mW	310 mW	300 mW	300 mW	350 mW	300 mW	300 mW
Frequency - Transition	200 MHz	100 MHz	200 MHz	200 MHz	200 MHz	200 MHz	200 MHz
Operating Temperature (TJ)	150°C	−55°C to 150°C	−55°C to 150°C	−55°C to 150°C	−55°C to 150°C	−55°C to 150°C	−55°C to 150°C
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The MMBT4403LT1G and MMBT4403LT3G (onsemi) are the closest functional equivalents to the BCW 67A E6327. Both devices are active products with ROHS3 compliance, matching the 40 V breakdown voltage rating and 600 mA collector current specification. These parts maintain identical Vce saturation characteristics (750 mV @ 50 mA, 500 mA) and transition frequency (200 MHz), ensuring direct functional replacement in most circuit applications.

Secondary Substitutes (Acceptable with Circuit Review):

The MMBT2907ALT1G and MMBT2907ALT3G (onsemi) provide higher voltage ratings (60 V) and maintain the 200 MHz transition frequency. These devices are active products with ROHS3 compliance. The higher Vce saturation voltage (1.6 V @ 50 mA, 500 mA) requires circuit-level evaluation to confirm compatibility with saturation-dependent applications.

The BC807-40-7-F (Diodes Incorporated) offers a 45 V breakdown voltage and active product status with ROHS3 compliance. The reduced transition frequency (100 MHz) and lower maximum collector current (500 mA) limit its applicability to circuits where these parameters are not critical.

Compliance and Availability:

All substitute parts listed are REACH Unaffected and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the original component's environmental specifications. All active substitutes are ROHS3 compliant, supporting modern supply chain and regulatory requirements. Inventory availability is confirmed for all listed alternatives.

Frequently Asked Questions (FAQ)

Q: Can the MMBT4403LT1G directly replace the BCW 67A E6327 in my circuit?

A: The MMBT4403LT1G is mechanically and electrically compatible with the BCW 67A E6327 in the SOT-23-3 package. Both devices share identical Vce saturation characteristics and transition frequency. The MMBT4403LT1G is an active product with current manufacturing support, making it suitable for direct substitution in most applications.

Q: What is the difference between MMBT4403LT1G and MMBT4403LT3G?

A: Both parts are functionally identical PNP transistors with the same electrical specifications. The primary difference is packaging: MMBT4403LT1G is supplied in Cut Tape (CT) & Digi-Reel format, while MMBT4403LT3G is supplied in Tape & Reel (TR) format. Selection depends on your procurement and assembly requirements.

Q: Why do the MMBT2907 variants have higher Vce saturation voltage than the BCW 67A E6327?

A: The MMBT2907ALT1G and MMBT2907ALT3G are rated at 1.6 V Vce saturation (@ 50 mA, 500 mA) compared to 700 mV for the BCW 67A E6327. This difference reflects different transistor design characteristics. Circuits relying on low saturation voltage for switching applications should use the MMBT4403 series instead.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed (BC807-40-7-F, MMBT2907ALT1G, MMBT2907ALT3G, MMBT4403-TP, MMBT4403LT1G, MMBT4403LT3G) are ROHS3 compliant. The original BCW 67A E6327 is an obsolete product with unspecified RoHS status.

Q: What is the maximum collector current I can use with the substitute parts?

A: The BCW 67A E6327 is rated for 800 mA maximum collector current. Most substitute parts (MMBT2907, MMBT4403 series) are rated for 600 mA maximum collector current. The BC807-40-7-F is rated for 500 mA. For applications requiring 800 mA operation, circuit redesign or alternative component selection may be necessary.

Q: Can I use the BC807-40-7-F as a substitute?

A: The BC807-40-7-F is mechanically compatible in the SOT-23-3 package and electrically compatible for PNP operation. However, the reduced transition frequency (100 MHz versus 200 MHz) and lower maximum collector current (500 mA versus 800 mA) limit its applicability. Use this part only in circuits where these reduced specifications are acceptable.

Q: What is the moisture sensitivity level for these parts?

A: All listed parts, including the original BCW 67A E6327 and all substitutes, carry MSL 1 (Unlimited) moisture sensitivity rating. This indicates no moisture sensitivity precautions are required during storage, handling, or assembly.

Q: Are there inventory differences between the substitute parts?

A: Yes. The MMBT2907ALT1G has the highest inventory (1,598,400 pcs), followed by MMBT4403LT1G (824,300 pcs) and MMBT2907ALT3G (888,991 pcs). The BC807-40-7-F has 17,100 pcs available. Inventory levels should be confirmed with your supplier for current availability.

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