BC847SH6433XTMA1 Equivalent & Substitute Parts

Part Overview

The BC847SH6433XTMA1 is a dual NPN bipolar junction transistor (BJT) array manufactured by Infineon Technologies in SOT-363 surface mount packaging. This component is classified as Last Time Buy, indicating discontinued production status. The device integrates two independent NPN transistors suitable for general-purpose switching and amplification applications in consumer and industrial electronics.

Due to Last Time Buy status, identifying functionally equivalent substitute parts is essential for design continuity and long-term supply chain management. Substitute parts must maintain electrical compatibility across critical parameters including collector current rating, breakdown voltage, saturation characteristics, and frequency response.

Key Parameters

Parameter	BC847SH6433XTMA1 (Main Part)	Unit
Transistor Type	2 NPN (Dual)	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max) @ Ib, Ic	600mV @ 5mA, 100mA	mV
Current - Collector Cutoff (Max)	15	nA
DC Current Gain (hFE) Min @ Ic, Vce	200 @ 2mA, 5V	—
Power - Max	250	mW
Frequency - Transition	250	MHz
Operating Temperature (TJ)	150	°C
Package / Case	6-VSSOP, SC-88, SOT-363	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
MSL	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the BC847SH6433XTMA1 is determined by the following critical parameters:

Primary Compatibility Criteria:

Transistor configuration: 2 NPN (Dual) array
Maximum collector current: 100 mA minimum
Collector-emitter breakdown voltage: 45 V minimum
DC current gain (hFE): 200 minimum @ 2 mA, 5 V
Package compatibility: SOT-363 / SC-88 / 6-TSSOP footprint
Surface mount technology

Secondary Compatibility Criteria:

Vce saturation characteristics within acceptable range for switching applications
Transition frequency: 100 MHz minimum (250 MHz preferred for high-speed applications)
Power dissipation: 200 mW minimum
Operating temperature range: -55°C to 150°C or equivalent
RoHS3 compliance and MSL Level 1

Substitute parts are grouped into three categories based on product status and application suitability:

Category 1: Direct Substitutes (Active Status, Standard Grade) Parts meeting all primary criteria with active manufacturing status and standard industrial qualification.

Category 2: Enhanced Substitutes (Active Status, Automotive Grade) Parts exceeding primary criteria with automotive-grade qualification (AEC-Q101 or AEC-Q100) and extended temperature range.

Category 3: Functional Alternatives (Active Status, Specialized Characteristics) Parts with matched-pair configurations or enhanced performance characteristics suitable for precision applications.

Parameter Comparison

Part Number	Manufacturer	Ic Max (mA)	Vce Breakdown (V)	Vce Sat @ 5mA, 100mA (mV)	hFE Min @ 2mA, 5V	Power Max (mW)	Freq Trans (MHz)	Temp Range (°C)	Status
BC847SH6433XTMA1	Infineon	100	45	600	200	250	250	–55 to 150	Last Time Buy
BC847BS-7-F	Diodes Inc.	100	45	400	200	200	100	–65 to 150	Active
SBC847BDW1T1G	onsemi	100	45	600	200	380	100	–55 to 150	Active
BC847BDW1T1G	onsemi	100	45	600	200	380	100	–55 to 150	Active
BC847BDW1T3G	onsemi	100	45	600	200	380	100	–55 to 150	Active
BC847BS-TP	Micro Commercial Co	100	45	650	110	300	200	–55 to 150	Active
BC847BSQ-7-F	Diodes Inc.	100	45	400	200	200	100	–55 to 150	Active
BCM847BS,115	Nexperia	100	45	400	200	300	250	–55 to 150	Active
BCM847BS,135	Nexperia	100	45	400	200	300	250	–55 to 150	Active
MMDT2222A-7-F	Diodes Inc.	600	40	1000 @ 50mA, 500mA	100 @ 150mA, 10V	200	300	–55 to 150	Active
MMDT3904-7-F	Diodes Inc.	200	40	300 @ 5mA, 50mA	100 @ 10mA, 1V	200	300	–55 to 150	Active

Engineering Selection Recommendations

Tier 1 Substitutes (Recommended for Direct Replacement):

BC847BDW1T1G and BC847BDW1T3G (onsemi) are manufacturer-recommended substitutes with identical electrical specifications to the main part. Both maintain 100 mA collector current, 45 V breakdown voltage, 600 mV saturation voltage, and 200 minimum hFE. Enhanced power dissipation (380 mW vs. 250 mW) provides additional thermal margin. Active product status ensures long-term availability. Standard industrial temperature range (-55°C to 150°C) matches the main part operational envelope.

Tier 2 Substitutes (Compatible with Minor Trade-offs):

BC847BS-7-F and BC847BSQ-7-F (Diodes Incorporated) meet all primary electrical criteria with 100 mA collector current and 45 V breakdown voltage. Lower saturation voltage (400 mV vs. 600 mV) indicates improved switching efficiency. Reduced transition frequency (100 MHz vs. 250 MHz) is acceptable for standard-speed applications. BC847BSQ-7-F carries automotive-grade AEC-Q101 qualification, suitable for automotive and industrial environments. Both parts maintain RoHS3 compliance and MSL Level 1.

Tier 3 Substitutes (Enhanced Performance Options):

BCM847BS,115 and BCM847BS,135 (Nexperia) are matched-pair dual NPN transistors with automotive-grade AEC-Q100 qualification. These parts maintain identical electrical specifications to the main part while providing matched transistor characteristics beneficial for differential amplifier and precision switching circuits. Transition frequency of 250 MHz matches the main part. Automotive qualification extends application scope to safety-critical systems.

Tier 4 Substitutes (Functional Alternatives for Higher Current Applications):

MMDT3904-7-F (Diodes Incorporated) supports 200 mA collector current, doubling the main part rating. Suitable for applications requiring higher current capacity within SOT-363 packaging. Lower hFE (100 vs. 200) and different saturation characteristics require circuit re-evaluation. MMDT2222A-7-F supports 600 mA collector current with significantly different saturation characteristics; use only when higher current capacity is essential and circuit design accommodates parameter differences.

Selection Criteria by Application:

Standard switching applications: BC847BDW1T1G, BC847BDW1T3G, BC847BS-7-F
Automotive and industrial environments: BC847BSQ-7-F, BCM847BS,115, BCM847BS,135
Precision differential circuits: BCM847BS,115, BCM847BS,135
High-current applications: MMDT3904-7-F (with circuit redesign)

All recommended substitutes maintain RoHS3 compliance, MSL Level 1 moisture sensitivity, and SOT-363 package compatibility.

Frequently Asked Questions (FAQ)

Q1: Can BC847BS-7-F directly replace BC847SH6433XTMA1 in existing designs?

BC847BS-7-F meets all primary electrical compatibility criteria: 100 mA collector current, 45 V breakdown voltage, 200 minimum hFE, and SOT-363 packaging. Lower saturation voltage (400 mV vs. 600 mV) and reduced transition frequency (100 MHz vs. 250 MHz) are acceptable for standard switching applications. Extended temperature range (-65°C to 150°C) provides additional margin. Direct PCB substitution is feasible without circuit modification for non-critical timing applications.

Q2: What is the difference between BC847BDW1T1G and BC847BDW1T3G?

Both parts are manufacturer-recommended onsemi substitutes with identical electrical specifications. The designation suffix (T1G vs. T3G) indicates different manufacturing date codes or tape reel configurations. Electrical performance, package compatibility, and reliability characteristics are equivalent. Selection between these parts depends on supplier availability and procurement requirements.

Q3: Are BCM847BS matched-pair transistors suitable for audio amplifier applications?

BCM847BS,115 and BCM847BS,135 are dual NPN matched-pair transistors with tightly controlled hFE and Vce characteristics. Matched-pair configuration reduces offset voltage and improves gain matching in differential circuits. Automotive-grade AEC-Q100 qualification ensures reliability. These parts are suitable for audio preamplifier and precision signal conditioning applications where transistor matching is critical.

Q4: Can MMDT3904-7-F be used as a drop-in replacement?

MMDT3904-7-F is not a direct drop-in replacement. While packaged in SOT-363 and rated for 40 V breakdown voltage, it supports only 200 mA collector current (vs. 100 mA main part) and has significantly different saturation characteristics (300 mV @ 5 mA, 50 mA vs. 600 mV @ 5 mA, 100 mA). Lower hFE (100 vs. 200) requires circuit redesign. Use only when higher current capacity is essential and circuit parameters are re-evaluated.

Q5: What is the significance of Last Time Buy status for BC847SH6433XTMA1?

Last Time Buy status indicates Infineon has discontinued production. Existing inventory may be available but will not be replenished. Design migration to active substitute parts is recommended for new designs and long-term product support. All recommended substitutes maintain active manufacturing status with established supply chains.

Q6: Do all substitute parts maintain RoHS3 compliance?

All substitute parts listed are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. Compliance status matches the main part, ensuring compatibility with environmental regulations and manufacturing processes. No additional handling or storage procedures are required.

Q7: Which substitute is best for automotive applications?

BC847BSQ-7-F (Diodes Incorporated) and BCM847BS series (Nexperia) carry automotive-grade qualifications. BC847BSQ-7-F holds AEC-Q101 certification suitable for automotive-grade components. BCM847BS,115 and BCM847BS,135 hold AEC-Q100 certification for higher-reliability automotive applications. Selection depends on specific automotive qualification requirements and system criticality.

Q8: Are there package compatibility concerns when substituting?

All substitute parts use SOT-363 / SC-88 / 6-TSSOP packaging with identical pinout and footprint. PCB layout modifications are not required. Supplier device package designations may vary (PG-SOT363-PO, SOT-363, SC-88/SC70-6/SOT-363) but refer to the same physical package. Verify footprint compatibility with design documentation before procurement.

Q9: What is the impact of lower transition frequency in BC847BS-7-F?

BC847BS-7-F operates at 100 MHz transition frequency compared to 250 MHz for the main part. This reduction is acceptable for applications with switching frequencies below 50 MHz. High-speed switching circuits (>50 MHz) may experience reduced performance. For frequency-critical applications, BCM847BS series (250 MHz) or BC847BS-TP (200 MHz) are preferred alternatives.

Q10: Can multiple substitute parts be used interchangeably in production?

Yes, BC847BDW1T1G, BC847BDW1T3G, BC847BS-7-F, and BC847BSQ-7-F can be used interchangeably in production for standard switching applications. Establish design validation for each substitute part to confirm performance in specific circuit topology. Document approved substitute list in design specifications and procurement procedures. Maintain traceability for quality and reliability tracking.

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