9T08052A8450BBHFT Equivalent & Substitute Parts

Part Overview

The 9T08052A8450BBHFT is a 845 Ohms ±0.1% 0.125W thin film chip resistor in 0805 (2012 Metric) package manufactured by YAGEO. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The component is RoHS non-compliant and carries unlimited moisture sensitivity level (MSL 1).

Substiute Parts

9T08052A8450BBHFT

YAGEOIn Stock: 9059T08052A8450BBHFT Datasheet

Current PartRFQ

RT0805BRE07845RL

YAGEOIn Stock: 689RT0805BRE07845RL Datasheet

DirectRFQ

TNPW0805845RBETA

Vishay DaleIn Stock: 781TNPW0805845RBETA Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 9T08052A8450BBHFT is determined by the following critical parameters:

• Resistance value: 845 Ohms (exact match required)
• Tolerance: ±0.1% (precision specification)
• Power rating: 0.125W / 1/8W (electrical performance)
• Package: 0805 (2012 Metric) (mechanical compatibility)
• Composition: Thin Film (performance characteristics)
• Operating temperature range: minimum -55°C ~ 155°C (environmental specification)

Two substitute parts meet these criteria:

RT0805BRE07845RL (YAGEO) – Direct equivalent with active product status and improved RoHS3 compliance.

TNPW0805845RBETA (Vishay Dale) – Military-grade upgrade option with enhanced temperature coefficient performance.

Parameter Comparison

Engineering Selection Recommendations

RT0805BRE07845RL is the primary substitute for direct replacement. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The improved temperature coefficient (±50ppm/°C versus ±100ppm/°C) provides enhanced stability. Tape & Reel packaging supports automated assembly processes.

TNPW0805845RBETA serves as an upgrade option for applications requiring military-grade performance. The superior temperature coefficient (±25ppm/°C) and military-grade composition deliver improved long-term stability. The reduced maximum seated height (0.022" versus 0.024") accommodates tighter PCB layouts. Note that the operating temperature range is limited to -55°C ~ 125°C, which is narrower than the original part's -55°C ~ 155°C specification.

Selection between these substitutes depends on compliance requirements and thermal performance needs. RT0805BRE07845RL is suitable for standard commercial applications requiring RoHS compliance. TNPW0805845RBETA is appropriate for high-reliability or military applications where superior temperature stability justifies the narrower operating range.

Frequently Asked Questions (FAQ)

Q: Can RT0805BRE07845RL be used as a direct replacement for 9T08052A8450BBHFT?

A: Yes. Both parts share identical resistance (845 Ohms), tolerance (±0.1%), power rating (0.125W), package (0805), and operating temperature range (-55°C ~ 155°C). RT0805BRE07845RL is active and RoHS3 compliant, making it the preferred direct substitute.

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

A: RT0805BRE07845RL is a direct YAGEO equivalent with standard commercial specifications. TNPW0805845RBETA is a Vishay Dale military-grade option with superior temperature coefficient (±25ppm/°C) but a narrower operating temperature range (-55°C ~ 125°C). Selection depends on application requirements and compliance standards.

Q: Are there any physical compatibility concerns?

A: Both substitutes use the 0805 (2012 Metric) package with identical length and width (0.079" x 0.049"). TNPW0805845RBETA has a slightly reduced maximum seated height (0.022" versus 0.024"), which is compatible with standard PCB designs but may provide additional clearance in space-constrained layouts.

Q: What is the significance of the temperature coefficient difference?

A: Temperature coefficient indicates resistance value drift with temperature change. The original part (±100ppm/°C) drifts more than RT0805BRE07845RL (±50ppm/°C) and TNPW0805845RBETA (±25ppm/°C). Lower coefficients provide better stability across the operating temperature range, particularly important in precision analog circuits.

Q: Does the RoHS compliance status affect substitution?

A: RT0805BRE07845RL is ROHS3 compliant, meeting current environmental regulations. The original part and TNPW0805845RBETA are RoHS non-compliant. For applications subject to RoHS requirements, RT0805BRE07845RL is the appropriate choice.

Q: What packaging formats are available?

A: Both substitutes are supplied in Tape & Reel (TR) format, supporting automated pick-and-place assembly. The original part packaging format was not specified in available data.