REF3425SQDBVRQ1 Equivalent & Substitute Parts

Part Overview

The REF3425SQDBVRQ1 is a series voltage reference integrated circuit manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This fixed 2.5V output reference IC operates with ±0.05% tolerance and delivers 10 mA output current in a compact SOT-23-5 surface mount package. The device is qualified to AEC-Q100 automotive standards and maintains active product status.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and compliance certifications are maintained across alternative part numbers or packaging configurations. Substitution becomes necessary when the primary part number experiences supply constraints, inventory limitations, or when alternative packaging formats better suit manufacturing requirements.

Substiute Parts

REF3425SQDBVRQ1

Texas InstrumentsIn Stock: 3424REF3425SQDBVRQ1 Datasheet

Current PartRFQ

REF2125IDBVR

Texas InstrumentsIn Stock: 16715REF2125IDBVR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the REF3425SQDBVRQ1 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Fixed output voltage of 2.5V
• Output current capability of 10 mA
• Tolerance specification of ±0.05%
• Temperature coefficient of 6 ppm/°C
• Noise performance: 5 µVp-p (0.1Hz to 10Hz) and 24 µVrms (10Hz to 10kHz)
• Input voltage range of 3V to 12V
• Supply current of 95 µA
• Operating temperature range of -40°C to 125°C

Mechanical Compatibility Criteria:

• Surface mount mounting type
• SOT-23-5 package configuration
• SC-74A / SOT-753 case designation

Compliance & Certification Criteria:

• ROHS3 compliance
• REACH unaffected status
• Moisture sensitivity level MSL 2 (1 Year)
• Automotive grade qualification
• AEC-Q100 certification

Parts meeting all electrical, mechanical, and compliance parameters are classified as parametric equivalents. Packaging format variations (Tape & Reel versus Cut Tape & Digi-Reel) do not affect functional substitution but may influence procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

The REF2125IDBVR is a direct parametric equivalent to the REF3425SQDBVRQ1. Both devices are manufactured by Texas Instruments and maintain identical electrical specifications, mechanical compatibility, and compliance certifications.

Selection Basis:

Both parts are active products with confirmed inventory availability. The REF3425SQDBVRQ1 is available in Tape & Reel packaging (3,390 units in stock), while the REF2125IDBVR is supplied in Cut Tape and Digi-Reel format (16,658 units in stock). The packaging format difference does not affect functional performance or circuit-level compatibility.

Both devices carry AEC-Q100 automotive qualification and ROHS3 compliance, making them suitable for applications requiring automotive-grade reliability. The identical MSL rating of 2 (1 Year) ensures equivalent moisture handling requirements during storage and assembly.

Selection between these two part numbers should be based on procurement requirements, assembly equipment compatibility with specific packaging formats, and inventory availability at the time of component sourcing.

Frequently Asked Questions (FAQ)

Q: Can REF2125IDBVR be used as a direct replacement for REF3425SQDBVRQ1 in existing designs?

A: Yes. The REF2125IDBVR is a parametric equivalent with identical electrical specifications, output voltage, current rating, tolerance, temperature coefficient, noise performance, and operating range. Both devices use the same SOT-23-5 package configuration and are pin-compatible.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) and Digi-Reel packaging provide smaller quantities on cut tape segments or alternative reel formats. Both formats contain identical components; the difference is in delivery and handling format for manufacturing processes.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the REF3425SQDBVRQ1 and REF2125IDBVR are qualified to AEC-Q100 automotive standards and carry automotive grade designation. Both are ROHS3 compliant and REACH unaffected, meeting automotive supply chain requirements.

Q: Do these parts have the same moisture sensitivity requirements?

A: Yes. Both parts carry MSL rating 2 (1 Year), indicating identical moisture sensitivity levels and storage requirements. Components must be stored in controlled humidity environments and used within one year of the manufacturing date code.

Q: What is the temperature operating range for these devices?

A: Both devices operate across -40°C to 125°C ambient temperature range, covering extended industrial and automotive temperature specifications.

Q: Are there any differences in supply current consumption?

A: No. Both devices consume 95 µA supply current, providing identical power efficiency characteristics in battery-powered or low-power applications.

Q: Can these parts be substituted in designs requiring high-precision voltage references?

A: Yes. Both devices maintain ±0.05% tolerance with 6 ppm/°C temperature coefficient and low noise specifications (5 µVp-p from 0.1Hz to 10Hz, 24 µVrms from 10Hz to 10kHz), meeting precision voltage reference requirements.