UNR511900L Equivalent & Substitute Parts

Part Overview

The UNR511900L is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Panasonic Electronic Components, designed for surface mount applications in the SMini3-G1 package. This device operates at 50 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and 150 mW power dissipation. The transistor features integrated base and emitter-base resistors (1 kOhms and 10 kOhms respectively), enabling simplified circuit design without external biasing networks.

The UNR511900L is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production, repair, and redesign applications where the original part is no longer readily procurable.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Pre-Biased	—
Current - Collector (Ic) (Max)	100	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Resistor - Base (R1)	1	kOhms
Resistor - Emitter Base (R2)	10	kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 5mA, 10V	—
Vce Saturation (Max) @ Ib, Ic	250mV @ 300µA, 10mA	—
Current - Collector Cutoff (Max)	500	nA
Frequency - Transition	80	MHz
Power - Max	150	mW
Mounting Type	Surface Mount	—
Package / Case	SC-70, SOT-323	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the UNR511900L is determined by electrical and mechanical parameter equivalence. The critical parameters that define substitutability are:

Electrical Parameters:

Transistor type: PNP - Pre-Biased configuration
Maximum collector current: 100 mA
Collector-emitter breakdown voltage: 50 V
Base resistor (R1): 1 kOhms
Emitter-base resistor (R2): 10 kOhms
Current-collector cutoff: 500 nA maximum
Moisture sensitivity level: 1 (Unlimited)

Mechanical Parameters:

Mounting type: Surface Mount
Package compatibility: SC-70 or SOT-323

Substitute parts are classified into two categories:

Direct Equivalent: Parts that maintain identical electrical specifications and differ only in packaging variant or supplier designation.

Functional Equivalent: Parts that maintain core electrical parameters (voltage, current, resistor values, transistor type) but may exhibit variations in secondary characteristics such as transition frequency, power dissipation, or saturation voltage. These parts are electrically compatible within the specified parameter ranges.

Parameter Comparison

Parameter	UNR511900L (Main)	UNR5119G0L	DDTA113ZUA-7-F	RN2314(TE85L,F)	PDTA113ZU,115
Manufacturer	Panasonic	Panasonic	Diodes Incorporated	Toshiba	NXP
Transistor Type	PNP - Pre-Biased	PNP - Pre-Biased	PNP - Pre-Biased	PNP - Pre-Biased	Pre-Biased
Current - Collector (Ic) (Max)	100 mA	100 mA	100 mA	100 mA	—
Voltage - Collector Emitter Breakdown (Max)	50 V	50 V	50 V	50 V	—
Resistor - Base (R1)	1 kOhms	1 kOhms	1 kOhms	1 kOhms	—
Resistor - Emitter Base (R2)	10 kOhms	10 kOhms	10 kOhms	10 kOhms	—
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 5mA, 10V	30 @ 5mA, 10V	33 @ 10mA, 5V	50 @ 10mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	250mV @ 300µA, 10mA	250mV @ 300µA, 10mA	300mV @ 500µA, 10mA	300mV @ 250µA, 5mA	—
Current - Collector Cutoff (Max)	500 nA	500 nA	500 nA	500 nA	—
Frequency - Transition	80 MHz	80 MHz	250 MHz	200 MHz	—
Power - Max	150 mW	150 mW	200 mW	100 mW	—
Package / Case	SC-70, SOT-323	SC-85	SC-70, SOT-323	SC-70, SOT-323	—
Product Status	Obsolete	Obsolete	Active	Active	Active
RoHS Status	Non-compliant	—	ROHS3 Compliant	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

UNR5119G0L (Panasonic): This part is a direct electrical equivalent to the UNR511900L with identical electrical specifications. The primary difference is the package variant (SC-85 versus SC-70/SOT-323). This substitute is suitable for applications where the SC-85 package footprint is compatible with the circuit board design. Both parts share obsolete product status and non-compliant RoHS classification.

DDTA113ZUA-7-F (Diodes Incorporated): This part maintains all core electrical parameters (100 mA collector current, 50 V breakdown voltage, 1 kOhms base resistor, 10 kOhms emitter-base resistor, 500 nA cutoff current) and is compatible with SC-70/SOT-323 packages. The DDTA113ZUA-7-F offers enhanced performance characteristics including 250 MHz transition frequency (versus 80 MHz) and 200 mW power dissipation (versus 150 mW). This part carries Active product status and ROHS3 compliance, making it suitable for new designs and applications requiring RoHS-compliant components. Saturation voltage is slightly elevated (300 mV versus 250 mV) under specified test conditions.

RN2314(TE85L,F) (Toshiba): This part maintains all core electrical parameters and is compatible with SC-70/SOT-323 packages. The RN2314 offers 200 MHz transition frequency and Active product status with ROHS3 compliance. Power dissipation is rated at 100 mW (lower than the main part's 150 mW). DC current gain is higher (50 @ 10mA, 5V versus 30 @ 5mA, 10V), and saturation voltage is 300 mV under different test conditions. This part is suitable for applications where lower power dissipation is acceptable and RoHS compliance is required.

PDTA113ZU,115 (NXP): This part is listed as a pre-biased transistor with Active product status and REACH Unaffected designation. Detailed electrical specifications are not fully provided in the available data. This part carries the highest inventory availability (241,303 pieces) among all listed substitutes. Selection of this part requires verification of complete electrical parameter compatibility with the application requirements.

Frequently Asked Questions (FAQ)

Q: Can the UNR511900L be directly replaced with the UNR5119G0L?

A: The UNR5119G0L is electrically identical to the UNR511900L. Direct replacement is possible if the circuit board layout accommodates the SC-85 package variant. Both parts are obsolete Panasonic products with identical electrical specifications.

Q: What are the advantages of using DDTA113ZUA-7-F as a substitute?

A: The DDTA113ZUA-7-F maintains all core electrical parameters required for substitution (100 mA collector current, 50 V breakdown voltage, matching resistor values). Additional advantages include Active product status, ROHS3 compliance, higher transition frequency (250 MHz), and greater power dissipation capability (200 mW). These characteristics make it suitable for new designs and applications requiring regulatory compliance.

Q: Are there package compatibility considerations when selecting a substitute?

A: Yes. The UNR511900L is specified for SC-70 or SOT-323 packages. The UNR5119G0L uses SC-85 packaging, which may require circuit board layout modifications. The DDTA113ZUA-7-F and RN2314(TE85L,F) are compatible with SC-70/SOT-323 packages and do not require layout changes. Verify package footprint compatibility before component selection.

Q: Which substitute part is recommended for new product designs?

A: Selection depends on specific application requirements. For designs requiring RoHS compliance and active product status, both DDTA113ZUA-7-F and RN2314(TE85L,F) are suitable. The DDTA113ZUA-7-F offers higher power dissipation capability (200 mW) and transition frequency (250 MHz). The RN2314(TE85L,F) provides lower power dissipation (100 mW) and higher DC current gain. The PDTA113ZU,115 offers maximum inventory availability but requires verification of complete electrical specifications.

Q: What is the significance of the pre-biased configuration?

A: The pre-biased configuration includes integrated base (R1 = 1 kOhms) and emitter-base (R2 = 10 kOhms) resistors. All listed substitute parts maintain this configuration with identical resistor values, ensuring functional compatibility without external biasing network modifications.

Q: How do transition frequency differences affect substitution?

A: The UNR511900L operates at 80 MHz transition frequency. Substitute parts offer higher transition frequencies (DDTA113ZUA-7-F at 250 MHz, RN2314(TE85L,F) at 200 MHz). Higher transition frequency provides improved high-frequency performance and faster switching characteristics. For applications operating below 80 MHz, higher transition frequency substitutes are fully compatible. For applications requiring specific frequency response characteristics, verify that the substitute part's frequency specification meets design requirements.

Q: What does RoHS compliance status indicate?

A: The UNR511900L is RoHS non-compliant. The DDTA113ZUA-7-F and RN2314(TE85L,F) are ROHS3 compliant, indicating they meet current Restriction of Hazardous Substances regulations. For applications subject to RoHS requirements or environmental regulations, ROHS3-compliant substitutes are necessary.

Q: Is the PDTA113ZU,115 a suitable substitute despite incomplete specification data?

A: The PDTA113ZU,115 is listed as a pre-biased transistor with Active product status and the highest inventory availability. However, complete electrical specifications are not provided in the available data. This part can be considered a substitute only after verification that all electrical parameters (collector current, breakdown voltage, resistor values, saturation voltage, and cutoff current) match or exceed the UNR511900L requirements for the specific application.

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