MMBT2369 Equivalent & Substitute Parts

Part Overview

The MMBT2369 is an NPN bipolar junction transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. This surface mount device operates at a maximum collector current of 200 mA with a collector-emitter breakdown voltage of 15 V and maximum power dissipation of 350 mW. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. Active substitute parts maintain electrical compatibility while offering improved availability and compliance status.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	200	mA
Voltage - Collector Emitter Breakdown (Max)	15	V
Vce Saturation (Max) @ Ib, Ic	250 mV @ 1 mA, 10 mA	—
DC Current Gain (hFE) Min @ Ic, Vce	40 @ 10 mA, 1 V	—
Power - Max	350	mW
Operating Temperature Range	-55 to 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 MMBT2369 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN (required match)
Current - Collector (Ic) Max: 200 mA minimum
Voltage - Collector Emitter Breakdown: 15 V minimum
Vce Saturation: 250 mV or lower @ 1 mA, 10 mA
DC Current Gain (hFE): 40 or higher @ 10 mA, 1 V
Power Dissipation: 350 mW or higher
Operating Temperature: -55°C to 150°C minimum
Mounting Type: Surface Mount
Package: SOT-23-3 or equivalent footprint

Substitute Categories:

Direct Electrical Equivalents (SOT-23-3 Package): Parts meeting all primary criteria with identical or superior electrical specifications and SOT-23-3 packaging.

Enhanced Performance Variants (SOT-23-3 Package): Parts exceeding primary specifications in collector current, power dissipation, or frequency response while maintaining SOT-23-3 compatibility.

Higher Voltage Capability: Parts with collector-emitter breakdown voltage exceeding 15 V, suitable for applications requiring additional voltage margin.

Alternative Package Formats: Parts with equivalent electrical specifications in different surface mount packages (SOT-323, TO-236AB) for design flexibility.

Parameter Comparison

Part Number	Manufacturer	Ic Max (mA)	Vce(br)max (V)	Vce Sat @ Ib,Ic (mV)	hFE Min @ Ic,Vce	Power Max (mW)	Package	Status
MMBT2369	onsemi	200	15	250 @ 1mA, 10mA	40 @ 10mA, 1V	350	SOT-23-3	Obsolete
MMBT2369ALT1G	onsemi	200	15	500 @ 10mA, 100mA	20 @ 100mA, 1V	225	SOT-23-3	Active
SMMBT2369ALT1G	onsemi	200	15	500 @ 10mA, 100mA	20 @ 100mA, 1V	225	SOT-23-3	Active
PMBT2369,215	Nexperia USA Inc.	200	15	250 @ 1mA, 10mA	40 @ 10mA, 1V	250	TO-236-3	Active
PMBT2369,235	Nexperia USA Inc.	200	15	250 @ 1mA, 10mA	40 @ 10mA, 1V	250	TO-236-3	Active
PMST2369,115	Nexperia USA Inc.	200	15	250 @ 1mA, 10mA	40 @ 10mA, 1V	200	SOT-323	Active
PMST2369,135	NXP USA Inc.	200	15	250 @ 1mA, 10mA	40 @ 10mA, 1V	200	SOT-323	Active
MMBT6429LT1G	onsemi	200	45	600 @ 5mA, 100mA	500 @ 100µA, 5V	225	SOT-23-3	Active
NSS20201LT1G	onsemi	2000	20	100 @ 200mA, 2A	200 @ 500mA, 2V	460	SOT-23-3	Active
BF570,215	NXP Semiconductors	100	15	—	40 @ 10mA, 1V	250	TO-236-3	Active
CMPT2369 TR PBFREE	Central Semiconductor Corp	500	15	250 @ 1mA, 10mA	40 @ 10mA, 1V	350	SOT-23	Active

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Identical Electrical Specifications):

PMBT2369,215 and PMBT2369,235 (Nexperia USA Inc.) are direct electrical equivalents of the MMBT2369. Both parts maintain the same collector current (200 mA), collector-emitter breakdown voltage (15 V), saturation voltage (250 mV @ 1 mA, 10 mA), and DC current gain (40 @ 10 mA, 1 V). These parts are AEC-Q101 qualified and ROHS3 compliant, providing automotive-grade reliability. The primary difference is packaging format (TO-236AB vs. SOT-23-3), which maintains mechanical compatibility with standard SOT-23-3 footprints. PMBT2369,215 is supplied in Cut Tape & Digi-Reel format, while PMBT2369,235 is supplied in Tape & Reel format.

Tier 2 - onsemi Active Alternatives (Same Manufacturer):

MMBT2369ALT1G and SMMBT2369ALT1G (onsemi) maintain the same electrical ratings (200 mA, 15 V) and SOT-23-3 packaging. These parts are active products with improved availability compared to the obsolete MMBT2369. Both are ROHS3 compliant. The difference in saturation voltage (500 mV vs. 250 mV) and DC current gain (20 vs. 40) indicates different operating characteristics; these parts are suitable for applications where the original specifications are not critical.

Tier 3 - Enhanced Performance Variants:

CMPT2369 TR PBFREE (Central Semiconductor Corp) exceeds the original specifications with 500 mA collector current capability while maintaining 15 V breakdown voltage and 350 mW power dissipation. This part is suitable for applications requiring higher current handling within the same voltage and power envelope. ROHS3 compliant and active status.

MMBT6429LT1G (onsemi) provides higher voltage capability (45 V breakdown) with 200 mA collector current, suitable for applications requiring additional voltage margin. This part is active and ROHS3 compliant.

NSS20201LT1G (onsemi) offers significantly higher collector current (2 A) and power dissipation (460 mW) with 20 V breakdown voltage. This part is suitable for higher-power switching applications. Active status and ROHS3 compliant.

Tier 4 - Alternative Package Formats:

PMST2369,115 and PMST2369,135 (Nexperia/NXP) provide identical electrical specifications to the original part in SOT-323 package format. These parts are AEC-Q101 qualified and ROHS3 compliant, suitable for space-constrained designs requiring smaller footprints.

Tier 5 - Current-Limited Alternative:

BF570,215 (NXP Semiconductors) maintains 15 V breakdown voltage and 40 @ 10 mA, 1 V DC current gain but is limited to 100 mA collector current. This part is suitable only for applications where the original 200 mA specification is not required. AEC-Q101 qualified and active status.

Frequently Asked Questions (FAQ)

Q: Can MMBT2369ALT1G directly replace MMBT2369 in all applications?

A: MMBT2369ALT1G maintains the same collector current (200 mA), collector-emitter breakdown voltage (15 V), and SOT-23-3 package. However, the saturation voltage is higher (500 mV vs. 250 mV) and DC current gain is lower (20 vs. 40). Direct replacement is possible only in applications where these parameter differences do not affect circuit performance. Verify saturation voltage and gain requirements in the original circuit design.

Q: What is the difference between PMBT2369,215 and PMBT2369,235?

A: Both parts are electrically identical with 200 mA collector current, 15 V breakdown voltage, 250 mV saturation voltage, and 40 DC current gain. The difference is packaging format: PMBT2369,215 is supplied in Cut Tape & Digi-Reel format, while PMBT2369,235 is supplied in Tape & Reel format. Both are AEC-Q101 qualified and ROHS3 compliant. Selection depends on procurement and assembly requirements.

Q: Can PMST2369,115 replace MMBT2369 in a standard SOT-23-3 footprint?

A: No. PMST2369,115 uses SOT-323 package, which has a different footprint than SOT-23-3. While the electrical specifications are identical (200 mA, 15 V, 250 mV saturation, 40 gain), the physical package is incompatible with SOT-23-3 PCB layouts. PMST2369,115 is suitable only for new designs with SOT-323 footprints or where manual rework is acceptable.

Q: Is CMPT2369 TR PBFREE suitable for direct replacement in high-current applications?

A: CMPT2369 TR PBFREE provides 500 mA collector current capability compared to the original 200 mA specification. This part is suitable for applications requiring higher current handling within the same 15 V breakdown voltage and 350 mW power dissipation envelope. However, verify that the circuit design can accommodate the higher current capability without introducing thermal or stability issues.

Q: What is the advantage of MMBT6429LT1G over MMBT2369?

A: MMBT6429LT1G provides higher collector-emitter breakdown voltage (45 V vs. 15 V) with the same 200 mA collector current and SOT-23-3 package. This part is suitable for applications requiring additional voltage margin or operation in higher-voltage circuits. The higher voltage rating does not affect compatibility with 15 V circuits.

Q: Can NSS20201LT1G replace MMBT2369 in low-current applications?

A: NSS20201LT1G has significantly higher collector current capability (2 A vs. 200 mA) and power dissipation (460 mW vs. 350 mW) with 20 V breakdown voltage. While this part can operate in low-current applications, it is over-specified for circuits designed for 200 mA operation. Use NSS20201LT1G only when higher current capability is required.

Q: What does AEC-Q101 qualification mean for automotive applications?

A: AEC-Q101 is an automotive electronics qualification standard. Parts bearing this qualification (PMBT2369,215, PMBT2369,235, PMST2369,115, PMST2369,135, BF570,215) have undergone rigorous testing for reliability, temperature cycling, and performance consistency. These parts are suitable for automotive and mission-critical applications requiring enhanced reliability assurance.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts listed are ROHS3 compliant, indicating compliance with Restriction of Hazardous Substances Directive 3. The original MMBT2369 is classified as REACH Unaffected. All substitute parts maintain REACH Unaffected status, ensuring regulatory compliance for both EU and non-EU markets.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture control during storage or handling. All parts listed maintain MSL 1 classification, eliminating the need for dry-pack storage or baking procedures prior to assembly.

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