DMA261040R Equivalent & Substitute Parts

Part Overview

The DMA261040R is a pre-biased dual PNP bipolar junction transistor (BJT) manufactured by Panasonic Electronic Components. This surface mount device integrates two PNP transistors with internal biasing resistors in a compact SC-74A (SOT-753) Mini5-G3-B package. The device is rated for 50V collector-emitter breakdown voltage, 100mA maximum collector current, and 300mW power dissipation.

The DMA261040R has been discontinued at DiGi Electronics. Equivalent substitute parts are available from Toshiba Semiconductor and Storage with active product status, providing direct functional replacement capability while maintaining electrical and mechanical compatibility.

Substiute Parts

DMA261040R

Panasonic Electronic ComponentsIn Stock: 1126DMA261040R Datasheet

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RN2502(TE85L,F)

Toshiba Semiconductor and StorageIn Stock: 2595RN2502(TE85L,F) Datasheet

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RN2507(TE85L,F)

Toshiba Semiconductor and StorageIn Stock: 1059RN2507(TE85L,F) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DMA261040R are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Transistor configuration: 2 PNP - Pre-Biased (Dual)
• Maximum collector current: 100mA
• Maximum collector-emitter breakdown voltage: 50V
• Maximum power dissipation: 300mW
• Package type: SC-74A (SOT-753)
• Mounting technology: Surface Mount
• Base resistor (R1): 10kOhms
• Regulatory compliance: RoHS Compliant

The substitute parts RN2502(TE85L,F) and RN2507(TE85L,F) from Toshiba Semiconductor and Storage meet all critical electrical specifications and package requirements. Both devices maintain the same voltage and current ratings, power dissipation capability, and surface mount package configuration. The primary differences relate to internal biasing resistor configuration (R2 value) and transition frequency characteristics, which do not preclude functional substitution in applications designed for the DMA261040R.

Parameter Comparison

Engineering Selection Recommendations

RN2507(TE85L,F) - Primary Substitute

The RN2507(TE85L,F) from Toshiba Semiconductor and Storage is the primary equivalent substitute for the DMA261040R. This device maintains identical base resistor (R1) and emitter-base resistor (R2) values of 10kOhms and 47kOhms respectively, matching the original part's internal biasing network. The RN2507 is currently in active production status with 1048 pieces in stock inventory. All electrical ratings (50V breakdown voltage, 100mA collector current, 300mW power dissipation) and package specifications (SC-74A, SOT-753) are identical. The device is RoHS Compliant with MSL 1 rating, meeting the same regulatory and environmental requirements as the original part.

RN2502(TE85L,F) - Secondary Substitute

The RN2502(TE85L,F) from Toshiba Semiconductor and Storage provides an alternative substitute option. This device shares identical voltage, current, and power ratings with the DMA261040R and uses the same SC-74A (SOT-753) surface mount package. The primary distinction is the emitter-base resistor (R2) configuration, which is 10kOhms rather than 47kOhms. This resistor value difference affects the internal biasing characteristics and may alter circuit behavior in applications sensitive to bias network impedance. The RN2502 is currently in active production status with 2581 pieces in stock inventory and maintains full RoHS compliance and MSL 1 rating.

Both Toshiba substitutes provide active product status and superior inventory availability compared to the discontinued Panasonic DMA261040R.

Frequently Asked Questions (FAQ)

Q: Can the RN2507(TE85L,F) be used as a direct replacement for the DMA261040R?

A: Yes. The RN2507(TE85L,F) is a direct functional equivalent. Both devices share identical internal biasing resistor values (R1 = 10kOhms, R2 = 47kOhms), electrical ratings (50V, 100mA, 300mW), and SC-74A (SOT-753) package configuration. No circuit modifications are required for substitution.

Q: What is the difference between RN2507 and RN2502?

A: The primary difference is the emitter-base resistor (R2) value. The RN2507 uses 47kOhms (matching the DMA261040R), while the RN2502 uses 10kOhms. This affects the internal bias network impedance and may influence circuit performance in applications with specific bias requirements. The RN2507 is the closer match to the original DMA261040R specification.

Q: Are both Toshiba substitutes compatible with the same PCB footprint?

A: Yes. Both RN2502(TE85L,F) and RN2507(TE85L,F) use the SC-74A (SOT-753) package, which is identical to the DMA261040R package. No PCB layout modifications are necessary for either substitute.

Q: Do the substitute parts meet the same regulatory requirements?

A: Yes. Both RN2502(TE85L,F) and RN2507(TE85L,F) are RoHS Compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the DMA261040R.

Q: What is the significance of the transition frequency specification in the Toshiba parts?

A: The Toshiba substitutes specify a transition frequency of 200MHz, while the DMA261040R does not provide this specification. This indicates the Toshiba devices have defined high-frequency performance characteristics. For applications operating below this frequency threshold, this specification does not affect substitution suitability.

Q: Why is the RN2507 recommended over the RN2502?

A: The RN2507(TE85L,F) maintains identical internal biasing resistor configuration to the DMA261040R (R2 = 47kOhms), ensuring equivalent circuit behavior in applications designed for the original part. The RN2502 uses a different R2 value (10kOhms), which may alter bias network characteristics and is therefore a secondary choice for direct substitution.

Q: Are there any differences in collector cutoff current specifications?

A: Yes. The DMA261040R specifies 500nA maximum collector cutoff current, while both Toshiba substitutes specify 100nA (ICBO). The lower cutoff current in the Toshiba devices represents improved leakage characteristics and does not preclude substitution.

Q: What packaging options are available for the substitute parts?

A: The RN2507(TE85L,F) is supplied in Tape & Reel (TR) packaging, while the RN2502(TE85L,F) is available in both Cut Tape (CT) and Digi-Reel® packaging options. Both are surface mount configurations suitable for automated assembly processes.