MMBT2369A Equivalent & Substitute Parts

Part Overview

The MMBT2369A is an NPN bipolar junction transistor manufactured by onsemi, rated for 15 V collector-emitter breakdown voltage and 200 mA maximum collector current in a surface mount SOT-23-3 package. This device is classified as obsolete, indicating that direct procurement may be limited. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support production requirements where the original part is no longer readily available or has been discontinued.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	15	V
Current - Collector (Ic) (Max)	200	mA
Power - Max	225	mW
Vce Saturation (Max) @ Ib, Ic	500mV @ 10mA, 100mA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	40 @ 10mA, 1V	—
Operating Temperature	-55 to 150	°C
Package / Case	SOT-23-3 (TO-236-3, SC-59)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the MMBT2369A is determined by the following critical parameters:

Primary Substitution Criteria:

Transistor type must be NPN
Voltage rating (Vce breakdown) must be greater than or equal to 15 V
Maximum collector current (Ic) must be greater than or equal to 200 mA
Power dissipation must support 225 mW or greater
Package must be SOT-23-3 (TO-236-3, SC-59) or compatible surface mount variant
Operating temperature range must encompass -55°C to 150°C

Substitution Categories:

Direct Equivalents: Parts with identical electrical specifications and package compatibility. These include MMBT2369ALT1G and SMMBT2369ALT1G from onsemi, which maintain the same voltage, current, and power ratings while offering active product status.

Functional Equivalents: Parts that meet or exceed the primary electrical requirements while maintaining package compatibility. PMBT2369,215 and PMBT2369,235 from Nexperia USA Inc. provide equivalent performance with automotive-grade qualification (AEC-Q101) and higher transition frequency (500 MHz).

Higher-Performance Substitutes: Parts that exceed the MMBT2369A specifications in one or more parameters while maintaining compatibility. MMBT6429LT1G offers higher voltage rating (45 V) and transition frequency (700 MHz). NSS20201LT1G provides significantly higher collector current (2 A) and power dissipation (460 mW). CMPT2369 TR PBFREE offers higher collector current (500 mA) and power dissipation (350 mW).

Limited-Current Substitutes: BF570,215 from NXP Semiconductors meets voltage and package requirements but is limited to 100 mA collector current, making it suitable only for applications not requiring the full 200 mA specification.

Parameter Comparison

Part Number	Manufacturer	Vce (Max) [V]	Ic (Max) [mA]	Power (Max) [mW]	hFE (Min) @ Ic, Vce	Package	Product Status	Compliance
MMBT2369A	onsemi	15	200	225	40 @ 10mA, 1V	SOT-23-3	Obsolete	REACH Unaffected
MMBT2369ALT1G	onsemi	15	200	225	20 @ 100mA, 1V	SOT-23-3	Active	ROHS3 Compliant
SMMBT2369ALT1G	onsemi	15	200	225	20 @ 100mA, 1V	SOT-23-3	Active	ROHS3 Compliant
PMBT2369,215	Nexperia USA Inc.	15	200	250	40 @ 10mA, 1V	TO-236AB	Active	ROHS3 Compliant, AEC-Q101
PMBT2369,235	Nexperia USA Inc.	15	200	250	40 @ 10mA, 1V	TO-236AB	Active	ROHS3 Compliant, AEC-Q101
MMBT6429LT1G	onsemi	45	200	225	500 @ 100µA, 5V	SOT-23-3	Active	ROHS3 Compliant
NSS20201LT1G	onsemi	20	2000	460	200 @ 500mA, 2V	SOT-23-3	Active	ROHS3 Compliant
BF570,215	NXP Semiconductors	15	100	250	40 @ 10mA, 1V	TO-236AB	Active	AEC-Q101
CMPT2369 TR PBFREE	Central Semiconductor Corp	15	500	350	40 @ 10mA, 1V	SOT-23	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

MMBT2369ALT1G and SMMBT2369ALT1G are recommended as primary substitutes. Both are manufactured by onsemi with active product status, ensuring long-term availability. These parts maintain the 15 V voltage rating, 200 mA collector current, and 225 mW power dissipation of the original MMBT2369A. MMBT2369ALT1G is available in Cut Tape and Digi-Reel packaging, while SMMBT2369ALT1G is supplied in Tape & Reel format. Both are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1).

For Automotive and High-Reliability Applications:

PMBT2369,215 and PMBT2369,235 from Nexperia USA Inc. are qualified to AEC-Q101 automotive standards and carry active product status. These parts provide identical voltage and current ratings with slightly higher power dissipation (250 mW versus 225 mW) and transition frequency of 500 MHz. The automotive qualification makes these parts suitable for applications requiring enhanced reliability and traceability. Both variants are ROHS3 compliant.

For Higher Voltage Applications:

MMBT6429LT1G maintains the 200 mA collector current and SOT-23-3 package but provides 45 V breakdown voltage and 700 MHz transition frequency. This part is suitable for applications where higher voltage headroom is required while maintaining the same current handling capability.

For Higher Current Applications:

NSS20201LT1G and CMPT2369 TR PBFREE exceed the collector current specification. NSS20201LT1G supports 2 A with 20 V rating and 150 MHz transition frequency. CMPT2369 TR PBFREE supports 500 mA with 15 V rating and 500 MHz transition frequency. These parts are appropriate only when higher current capacity is required by the application.

Not Recommended for Direct Substitution:

BF570,215 is limited to 100 mA maximum collector current, which is insufficient for applications requiring the full 200 mA specification of the MMBT2369A.

Frequently Asked Questions (FAQ)

Q: Can MMBT2369ALT1G be used as a direct replacement for MMBT2369A?

A: Yes. MMBT2369ALT1G maintains identical voltage (15 V), current (200 mA), and power (225 mW) specifications. The primary difference is product status: MMBT2369ALT1G is active, whereas MMBT2369A is obsolete. Both use the SOT-23-3 package and are compatible with existing PCB layouts.

Q: What is the difference between MMBT2369ALT1G and SMMBT2369ALT1G?

A: Both parts are electrically identical with the same 15 V, 200 mA, and 225 mW ratings. The difference is packaging format: MMBT2369ALT1G is supplied in Cut Tape and Digi-Reel, while SMMBT2369ALT1G is supplied in Tape & Reel. Selection depends on assembly line requirements and tape format compatibility.

Q: Are PMBT2369,215 and PMBT2369,235 interchangeable?

A: Yes. Both parts are electrically identical with 15 V, 200 mA, and 250 mW specifications. The difference is packaging format: PMBT2369,215 is Cut Tape and Digi-Reel, while PMBT2369,235 is Tape & Reel. Both are AEC-Q101 qualified and ROHS3 compliant.

Q: Can BF570,215 replace MMBT2369A in all applications?

A: No. BF570,215 is limited to 100 mA maximum collector current, which is 50% of the MMBT2369A specification. This part is suitable only for applications that do not require the full 200 mA current capacity.

Q: What is the advantage of using PMBT2369,215 over MMBT2369ALT1G?

A: PMBT2369,215 carries AEC-Q101 automotive qualification, making it suitable for automotive and high-reliability applications requiring enhanced traceability and quality assurance. It also provides slightly higher power dissipation (250 mW versus 225 mW) and 500 MHz transition frequency. For non-automotive applications, MMBT2369ALT1G is an equivalent choice.

Q: Is the SOT-23-3 package compatible with TO-236AB?

A: Yes. SOT-23-3 and TO-236AB are equivalent package designations for the same physical form factor. Parts specified as either SOT-23-3, TO-236-3, or SC-59 are mechanically and electrically compatible and can be used interchangeably on the same PCB layout.

Q: Can MMBT6429LT1G be used in place of MMBT2369A?

A: MMBT6429LT1G can be used if the application does not require the 15 V voltage rating. This part provides 45 V breakdown voltage, which is higher than necessary for 15 V applications. It maintains the same 200 mA collector current and SOT-23-3 package. Use this part only when higher voltage capability is beneficial or required by the circuit design.

Q: What does ROHS3 compliance mean?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive 3, which restricts the use of specific hazardous materials in electrical and electronic equipment. All active substitute parts listed are ROHS3 compliant, ensuring environmental and regulatory compliance.

Q: Are all substitute parts rated for the same operating temperature range?

A: Most substitute parts operate from -55°C to 150°C, matching the MMBT2369A specification. PMBT2369,215 and PMBT2369,235 specify a maximum of 150°C without a lower limit explicitly stated in the provided data. CMPT2369 TR PBFREE extends the lower limit to -65°C. Verify the specific temperature range requirements of your application before selection.

Q: What is the significance of MSL 1 (Unlimited) moisture sensitivity level?

A: MSL 1 indicates unlimited moisture sensitivity, meaning the component does not require special moisture control during storage, handling, or assembly. This simplifies logistics and manufacturing processes compared to higher MSL ratings that require controlled humidity environments.

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