MMUN2113LT1 Equivalent & Substitute Parts

Part Overview

The MMUN2113LT1 is a pre-biased bipolar transistor (BJT) manufactured by onsemi, classified as a PNP-type device rated for 100 mA collector current and 50 V collector-emitter breakdown voltage in a surface mount SOT-23-3 package. The device is currently listed as obsolete, which necessitates identification of functionally equivalent active alternatives for ongoing design and procurement requirements. Substitute parts must maintain electrical compatibility across critical parameters including maximum collector current, breakdown voltage, base and emitter-base resistor values, and saturation characteristics.

Substiute Parts

MMUN2113LT1

onsemiIn Stock: 1586MMUN2113LT1 Datasheet

Current PartRFQ

MMUN2113LT1G

onsemiIn Stock: 32156MMUN2113LT1G Datasheet

DirectRFQ

DDTA144ECA-7-F

Diodes IncorporatedIn Stock: 6152DDTA144ECA-7-F Datasheet

SimilarRFQ

PDTA144ET,215

Nexperia USA Inc.In Stock: 4143PDTA144ET,215 Datasheet

SimilarRFQ

PDTA144ET,235

Nexperia USA Inc.In Stock: 10803PDTA144ET,235 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMUN2113LT1 is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor type: PNP - Pre-Biased configuration
• Maximum collector current: 100 mA
• Maximum collector-emitter breakdown voltage: 50 V
• Base resistor (R1): 47 kOhms
• Emitter-base resistor (R2): 47 kOhms
• Package type: SOT-23-3 (TO-236-3, SC-59)
• Mounting: Surface mount

All identified substitute parts meet these core electrical and mechanical requirements. Substitute parts are classified into two groups: direct manufacturer equivalents from onsemi and cross-manufacturer alternatives from Diodes Incorporated and Nexperia USA Inc. All substitute parts listed are in active product status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

MMUN2113LT1G (onsemi) is the primary direct substitute. This part maintains manufacturer continuity with onsemi and is electrically equivalent across all critical parameters. The MMUN2113LT1G is in active product status with 32,100 units in stock, ensuring supply availability. The device achieves ROHS3 compliance, addressing regulatory requirements not met by the obsolete MMUN2113LT1.

DDTA144ECA-7-F (Diodes Incorporated) provides cross-manufacturer substitution with active product status and 6,126 units in stock. This device meets all core electrical specifications and is ROHS3 compliant. The DDTA144ECA-7-F exhibits a transition frequency of 250 MHz, which is not specified for the main part but does not affect substitution eligibility for standard switching applications.

PDTA144ET,215 and PDTA144ET,235 (Nexperia USA Inc.) are functionally equivalent alternatives from Nexperia. Both parts are in active status with 4,100 and 10,741 units in stock respectively. These devices are ROHS3 compliant and meet all specified electrical parameters. The PDTA144ET,235 variant offers higher inventory availability.

All substitute parts maintain identical package specifications (SOT-23-3), surface mount configuration, and MSL rating of 1 (Unlimited), ensuring direct PCB compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can MMUN2113LT1G be used as a direct replacement for MMUN2113LT1?

A: Yes. MMUN2113LT1G is the direct onsemi equivalent with identical electrical specifications across collector current (100 mA), breakdown voltage (50 V), and internal resistor values (47 kOhms base and emitter-base). Both use SOT-23-3 packaging. The primary difference is product status: MMUN2113LT1G is active while MMUN2113LT1 is obsolete.

Q: What is the difference between PDTA144ET,215 and PDTA144ET,235?

A: Both parts are functionally identical in electrical performance and package type. The difference is in inventory availability: PDTA144ET,235 has 10,741 units in stock compared to 4,100 units for PDTA144ET,215. Selection between these variants should be based on procurement lead time and supply chain requirements.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed (MMUN2113LT1G, DDTA144ECA-7-F, PDTA144ET,215, and PDTA144ET,235) are ROHS3 compliant. The original MMUN2113LT1 is RoHS non-compliant. Designs requiring RoHS compliance must use one of the active substitute parts.

Q: Do the substitute parts have the same package footprint?

A: Yes. All substitute parts use SOT-23-3 packaging (also designated TO-236-3 or SC-59). PCB footprints are identical, and no layout modifications are required for substitution.

Q: What is the significance of the transition frequency specification on DDTA144ECA-7-F?

A: The DDTA144ECA-7-F specifies a transition frequency of 250 MHz. This parameter is not provided for the main part MMUN2113LT1 or other substitutes. For standard switching applications at frequencies below 250 MHz, this specification does not affect substitution eligibility. Applications requiring specific frequency response characteristics should reference detailed device datasheets.

Q: Can I substitute across manufacturers (onsemi to Diodes or Nexperia)?

A: Yes. All substitute parts meet the core electrical requirements: 100 mA maximum collector current, 50 V breakdown voltage, 47 kOhms base and emitter-base resistors, and SOT-23-3 packaging. Cross-manufacturer substitution is electrically valid. Procurement and supply chain considerations may influence manufacturer selection.

Q: What inventory levels should I consider for long-term supply?

A: MMUN2113LT1G (onsemi) has the highest inventory at 32,100 units. PDTA144ET,235 (Nexperia) has 10,741 units. PDTA144ET,215 has 4,100 units, and DDTA144ECA-7-F has 6,126 units. For applications requiring sustained supply, MMUN2113LT1G or PDTA144ET,235 are preferred based on available stock levels.