Equivalent & Substitute Parts for 9T08052A49R9DAHFT

Part Overview

The 9T08052A49R9DAHFT is a 49.9 Ohm ±0.5% thin film chip resistor in 0805 (2012 Metric) package rated at 0.125W (1/8W). Manufactured by YAGEO under the RT series, this component is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent and substitute parts is necessary for design continuity and procurement flexibility.

Substiute Parts

9T08052A49R9DAHFT

YAGEOIn Stock: 9859T08052A49R9DAHFT Datasheet

Current PartRFQ

RT0805DRD0749R9L

YAGEOIn Stock: 4710RT0805DRD0749R9L Datasheet

DirectRFQ

TNPW080549R9BETA

Vishay DaleIn Stock: 1097TNPW080549R9BETA Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 9T08052A49R9DAHFT is determined by strict equivalence in the following parameters:

• Resistance value: 49.9 Ohms (exact match required)
• Tolerance: ±0.5% or tighter (±0.1% acceptable as upgrade)
• Power rating: 0.125W minimum
• Package: 0805 (2012 Metric) form factor
• Composition: Thin film construction
• Operating temperature range: Must support -55°C to 155°C minimum

Two substitute parts meet these criteria:

1. RT0805DRD0749R9L (YAGEO) — Direct equivalent with improved temperature coefficient and active product status
2. TNPW080549R9BETA (Vishay Dale) — Upgrade option with tighter tolerance (±0.1%) and military-grade specifications

Parameter Comparison

Engineering Selection Recommendations

RT0805DRD0749R9L is the primary direct substitute. It maintains identical electrical specifications (49.9 Ohms, ±0.5% tolerance, 0.125W) and mechanical compatibility while offering active product status, improved temperature coefficient (±25ppm/°C vs. ±100ppm/°C), and ROHS3 compliance. This part is suitable for applications requiring direct replacement with enhanced reliability and regulatory compliance.

TNPW080549R9BETA serves as an upgrade option for applications requiring tighter tolerance control (±0.1% vs. ±0.5%) and military-grade specifications. The operating temperature range is limited to -55°C ~ 125°C, which is acceptable for most applications but does not extend to the full 155°C upper limit of the original part. This part is non-RoHS compliant.

Selection between RT0805DRD0749R9L and TNPW080549R9BETA depends on tolerance requirements and temperature range constraints specific to the application.

Frequently Asked Questions (FAQ)

Q: Can RT0805DRD0749R9L be used as a direct replacement for 9T08052A49R9DAHFT?

A: Yes. Both parts share identical resistance (49.9 Ohms), tolerance (±0.5%), power rating (0.125W), and 0805 package form factor. The RT0805DRD0749R9L is electrically and mechanically compatible and offers improved specifications (lower temperature coefficient, active status, ROHS3 compliance).

Q: What is the difference between the two substitute parts?

A: RT0805DRD0749R9L maintains the ±0.5% tolerance specification. TNPW080549R9BETA offers tighter tolerance at ±0.1%, suitable for precision applications, but has a reduced operating temperature range (-55°C ~ 125°C vs. -55°C ~ 155°C).

Q: Are the substitute parts available in the same packaging as the original?

A: The original 9T08052A49R9DAHFT is supplied in bulk packaging. Both substitutes (RT0805DRD0749R9L and TNPW080549R9BETA) are supplied in Tape & Reel (TR) format, which is standard for production environments and offers better handling and automated assembly compatibility.

Q: Does the temperature coefficient difference affect substitution?

A: The original part has a temperature coefficient of ±100ppm/°C, while both substitutes have ±25ppm/°C. This represents improved stability in the substitutes and does not prevent substitution; it is a performance enhancement.

Q: Are there RoHS compliance considerations?

A: The original part is RoHS non-compliant. RT0805DRD0749R9L is ROHS3 compliant, making it suitable for applications with RoHS requirements. TNPW080549R9BETA remains non-compliant. Verify RoHS requirements for your application before selection.