UNR511700L Equivalent & Substitute Parts

Part Overview

The UNR511700L is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Panasonic Electronic Components, designed for surface mount applications in the SC-70/SOT-323 package. This device operates at 50 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and is rated for 150 mW power dissipation. The part is classified as obsolete, making identification of functionally equivalent substitutes necessary for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, base resistor value, and saturation characteristics.

Substiute Parts

UNR511700L

Panasonic Electronic ComponentsIn Stock: 730UNR511700L Datasheet

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DTA124TUAT106

Rohm SemiconductorIn Stock: 56871DTA124TUAT106 Datasheet

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PDTA124TU,115

Nexperia USA Inc.In Stock: 982PDTA124TU,115 Datasheet

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RN2312(TE85L,F)

Toshiba Semiconductor and StorageIn Stock: 4238RN2312(TE85L,F) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the UNR511700L is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Transistor Type: PNP - Pre-Biased configuration
• Collector-Emitter Breakdown Voltage: 50 V maximum
• Maximum Collector Current: 100 mA
• Base Resistor Value: 22 kOhms
• Package Type: SC-70 or SOT-323 surface mount
• Mounting Type: Surface mount
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Frequency - Transition: May exceed 80 MHz (higher frequency capability is acceptable)
• Power - Max: May exceed 150 mW (higher power rating is acceptable)
• DC Current Gain (hFE): Variation acceptable within device specifications
• Vce Saturation: Variation acceptable within device specifications
• Current - Collector Cutoff: Variation acceptable within device specifications

All identified substitute parts maintain the mandatory parameters while offering equal or superior performance in allowable variation parameters. Product status and compliance certifications are secondary selection criteria based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

DTA124TUAT106 (Rohm Semiconductor): This substitute offers active product status with ROHS3 compliance and REACH unaffected certification. The device provides superior frequency performance at 250 MHz and increased power rating of 200 mW. Electrical parameters remain within acceptable variation ranges. Packaging is Tape & Reel (TR) with UMT3 supplier designation.

PDTA124TU,115 (Nexperia USA Inc.): This substitute maintains active product status with ROHS3 compliance and REACH unaffected certification. The device delivers improved Vce saturation performance at 150 mV and maintains 200 mW power rating. Packaging is Tape & Reel (TR) with SOT-323 supplier designation, providing direct package compatibility.

RN2312(TE85L,F) (Toshiba Semiconductor and Storage): This substitute provides active product status with ROHS3 compliance. The device operates at 200 MHz transition frequency and delivers 100 mW power rating. Electrical parameters remain within acceptable variation ranges. Packaging is Tape & Reel (TR) with SC-70 supplier designation.

All three substitutes satisfy mandatory electrical and mechanical compatibility requirements. Selection between substitutes depends on specific application requirements regarding frequency performance, power dissipation margin, and packaging preferences.

Frequently Asked Questions (FAQ)

Q: Can DTA124TUAT106 directly replace UNR511700L in existing designs?

A: Yes. DTA124TUAT106 maintains all mandatory electrical parameters: 50 V breakdown voltage, 100 mA collector current, 22 kOhm base resistor, and SC-70/SOT-323 package compatibility. The higher transition frequency (250 MHz vs. 80 MHz) and increased power rating (200 mW vs. 150 mW) represent performance improvements without compatibility issues.

Q: What is the primary difference between PDTA124TU,115 and DTA124TUAT106?

A: Both devices meet substitution requirements. PDTA124TU,115 offers superior Vce saturation performance (150 mV vs. 300 mV) and uses SOT-323 supplier packaging. DTA124TUAT106 provides higher transition frequency (250 MHz vs. unspecified) and uses UMT3 supplier packaging. Selection depends on saturation voltage requirements and packaging preferences.

Q: Is RN2312(TE85L,F) suitable for high-frequency applications?

A: RN2312(TE85L,F) operates at 200 MHz transition frequency, which exceeds the original UNR511700L specification of 80 MHz. This device is suitable for applications requiring moderate frequency performance. However, DTA124TUAT106 at 250 MHz provides superior frequency capability if higher-speed operation is required.

Q: Are all substitute parts RoHS compliant?

A: Yes. DTA124TUAT106, PDTA124TU,115, and RN2312(TE85L,F) are all ROHS3 compliant. The original UNR511700L does not specify RoHS status. All substitutes meet current environmental compliance requirements.

Q: Can these substitutes be used interchangeably in production?

A: All three substitutes maintain identical mandatory electrical parameters and package types. However, they differ in supplier packaging designations (UMT3, SOT-323, SC-70) and minor electrical variations. Verify PCB footprint compatibility and confirm that minor parameter variations do not affect circuit performance before implementing production changes.

Q: What is the moisture sensitivity rating for substitute parts?

A: All substitute parts maintain MSL 1 (Unlimited) rating, identical to the original UNR511700L. No special moisture handling procedures are required during storage or assembly.