DMC561040R Equivalent & Substitute Parts

Part Overview

The DMC561040R is a pre-biased dual NPN bipolar transistor (BJT) manufactured by Panasonic Electronic Components in a 6-SMD SMini5-F3-B surface mount package. This component integrates two NPN transistors with internal biasing resistors, designed for low-power switching and logic applications with a maximum power dissipation of 150mW and collector current rating of 100mA.

The DMC561040R has been discontinued at DiGi Electronics. Equivalent substitute parts are available from Rohm Semiconductor that maintain the core electrical specifications and functional performance while offering active product status and improved availability.

Substiute Parts

DMC561040R

Panasonic Electronic ComponentsIn Stock: 20464DMC561040R Datasheet

Current PartRFQ

UMG5NTR

Rohm SemiconductorIn Stock: 77306UMG5NTR Datasheet

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UMH9NFHATN

Rohm SemiconductorIn Stock: 3020UMH9NFHATN Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DMC561040R is determined by matching the following critical electrical and mechanical parameters:

Electrical Matching Criteria:

• Transistor configuration: 2 NPN - Pre-Biased (Dual)
• Maximum collector current: 100mA
• Collector-emitter breakdown voltage: 50V
• Internal base resistor (R1): 10kOhms
• Internal emitter-base resistor (R2): 47kOhms
• Maximum power dissipation: 150mW
• Collector cutoff current: 500nA

Mechanical Matching Criteria:

• Mounting type: Surface Mount
• Lead configuration: Flat lead packages

All substitute parts listed maintain these core parameters. Package variations (SMini5-F3-B versus UMT5 or UMT6) represent different physical form factors but preserve electrical equivalence for circuit-level substitution. Pin-to-pin compatibility must be verified during board-level integration.

Parameter Comparison

Engineering Selection Recommendations

UMG5NTR (Rohm Semiconductor): This substitute maintains full electrical equivalence to the DMC561040R across all core parameters. The UMG5NTR is in active production status with higher inventory availability (77,200 pieces). It carries ROHS3 compliance and unlimited moisture sensitivity rating. The package format differs (5-TSSOP/SC-70-5/SOT-353 versus SMini5-F3-B), requiring PCB layout verification. The transition frequency specification of 250MHz provides additional performance data not available for the original part. This option is suitable for general-purpose applications requiring standard-grade components.

UMH9NFHATN (Rohm Semiconductor): This substitute provides full electrical equivalence with the additional qualification of AEC-Q101 automotive-grade certification. The UMH9NFHATN is in active production with ROHS3 compliance and unlimited moisture sensitivity rating. The package format differs (6-TSSOP/SC-88/SOT-363 versus SMini5-F3-B), requiring PCB layout verification. This option is specified for applications requiring automotive-grade reliability and qualification standards.

Both Rohm substitutes demonstrate active product status, ensuring long-term supply chain stability compared to the discontinued Panasonic original.

Frequently Asked Questions (FAQ)

Q: Can the UMG5NTR or UMH9NFHATN be used as direct replacements for the DMC561040R?

A: Both Rohm parts maintain electrical equivalence across all specified parameters: 100mA maximum collector current, 50V breakdown voltage, 10kOhms base resistor, 47kOhms emitter-base resistor, and 150mW power dissipation. However, package geometry differs. The DMC561040R uses a 6-SMD SMini5-F3-B package, while UMG5NTR uses 5-TSSOP (SC-70-5/SOT-353) and UMH9NFHATN uses 6-TSSOP (SC-88/SOT-363). PCB footprint and pin assignment verification is required before implementation.

Q: What are the differences in DC current gain between these parts?

A: The DMC561040R specifies a minimum DC current gain (hFE) of 80 at 5mA collector current and 10V collector-emitter voltage. Both Rohm substitutes specify a minimum hFE of 68 at 5mA collector current and 5V collector-emitter voltage. These differences reflect different measurement conditions rather than fundamental performance variations. Both values are within acceptable ranges for pre-biased transistor applications.

Q: How do saturation voltage specifications compare?

A: The DMC561040R specifies maximum saturation voltage of 250mV at 500µA base current and 10mA collector current. Both Rohm substitutes specify 300mV at 250µA base current and 5mA collector current. The Rohm specifications reflect measurement at lower current levels. For switching applications, both saturation characteristics are functionally equivalent.

Q: What is the significance of the 250MHz transition frequency in the Rohm parts?

A: The UMG5NTR and UMH9NFHATN specify a transition frequency of 250MHz, which was not provided for the DMC561040R. This parameter indicates the frequency at which current gain drops to unity and represents the maximum useful frequency for the transistor. The 250MHz specification confirms suitability for high-speed switching applications beyond the original part's documented range.

Q: Is the UMH9NFHATN automotive-grade qualification relevant for non-automotive applications?

A: AEC-Q101 qualification indicates the part has undergone automotive-grade reliability testing and environmental stress screening. While specified for automotive use, this qualification does not restrict application in non-automotive circuits. The UMH9NFHATN can be used in any application where the DMC561040R was specified, with the added assurance of automotive-grade reliability testing.

Q: What packaging considerations apply when substituting these parts?

A: The three parts use different surface mount packages: SMini5-F3-B (5-lead), UMT5/SC-70-5 (5-lead), and UMT6/SC-88 (6-lead). Physical dimensions, lead spacing, and PCB footprints differ. Verify that the selected substitute package is compatible with existing PCB layouts or plan for layout modifications. Pin-to-pin functional mapping must be confirmed against device datasheets before board fabrication.

Q: Are all three parts RoHS compliant?

A: Yes. The DMC561040R is RoHS Compliant. Both Rohm substitutes (UMG5NTR and UMH9NFHATN) are ROHS3 Compliant, representing the current RoHS standard. All three parts meet environmental compliance requirements for lead-free manufacturing and hazardous substance restrictions.