REF3318AIDCKR Equivalent & Substitute Parts

Part Overview

The REF3318AIDCKR is a series voltage reference IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This fixed 1.8V reference device delivers 5 mA output current with ±0.15% tolerance and operates across the -40°C to 125°C temperature range. The component is housed in an SC-70 (SOT-323) surface mount package and is currently in active production status. Substitute parts are identified when parametric specifications, compliance certifications, and packaging remain equivalent, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

REF3318AIDCKR

Texas InstrumentsIn Stock: 41428REF3318AIDCKR Datasheet

Current PartRFQ

REF3318AIDCKT

Texas InstrumentsIn Stock: 3673REF3318AIDCKT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the REF3318AIDCKR are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution criteria include:

Electrical Parameters (Must Match Exactly):

• Fixed output voltage: 1.8V
• Output current: 5 mA
• Tolerance: ±0.15%
• Temperature coefficient: 30 ppm/°C
• Noise specification (0.1Hz to 10Hz): 50 µVp-p
• Input voltage range: 2V ~ 5.5V
• Supply current: 8.5 µA
• Operating temperature range: -40°C ~ 125°C

Mechanical & Packaging Parameters (Must Match Exactly):

• Package type: SC-70 (SOT-323)
• Mounting type: Surface Mount
• Supplier device package: SC-70-3

Compliance & Status Parameters (Must Match Exactly):

• Product status: Active
• RoHS compliance: ROHS3 Compliant
• REACH status: REACH Unaffected
• Moisture sensitivity level: 2 (1 Year)

Only parts meeting all specified parameters across these categories qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The REF3318AIDCKT qualifies as a direct parametric equivalent to the REF3318AIDCKR. Both components are manufactured by Texas Instruments, maintain identical electrical specifications, and share the same SC-70 surface mount package configuration. Both parts carry Active product status, ROHS3 compliance certification, and REACH Unaffected designation, confirming regulatory alignment for current and future applications.

Selection between these parts may be determined by packaging format availability (Cut Tape vs. Digi-Reel) and inventory levels. The REF3318AIDCKR maintains higher inventory (41,400 pcs) compared to the REF3318AIDCKT (3,638 pcs), which may influence lead time and procurement strategy.

Frequently Asked Questions (FAQ)

Q: Can REF3318AIDCKT replace REF3318AIDCKR in existing designs?

A: Yes. The REF3318AIDCKT is a direct parametric equivalent. All electrical specifications, operating ranges, package type, and compliance certifications are identical. No circuit modifications are required.

Q: What is the difference between REF3318AIDCKR and REF3318AIDCKT?

A: The primary difference is packaging format. REF3318AIDCKR is supplied in Cut Tape (CT) & Digi-Reel format, while REF3318AIDCKT is also supplied in Cut Tape (CT) & Digi-Reel format. Both use the same SC-70-3 supplier device package. The suffix designations reflect different tape and reel configurations for automated assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both REF3318AIDCKR and REF3318AIDCKT are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry Moisture Sensitivity Level (MSL) 2 with a 1-year floor life rating. Standard moisture control procedures during storage and handling are required.

Q: Can these parts be used interchangeably in high-precision applications?

A: Yes. Both parts maintain ±0.15% tolerance and 30 ppm/°C temperature coefficient specifications, supporting applications requiring stable 1.8V reference generation across the -40°C to 125°C operating range.

Q: What is the maximum output current for these reference ICs?

A: Both parts deliver 5 mA maximum output current with input voltage range of 2V to 5.5V and supply current of 8.5 µA.