TNPW0805499RBYEN Equivalent & Substitute Parts

Part Overview

The TNPW0805499RBYEN is a 499 Ohm ±0.1% thin film chip resistor manufactured by Vishay Dale in the 0805 (2012 Metric) package. This component is rated for 0.26W power dissipation and is designed for automotive applications with AEC-Q200 qualification. The resistor features anti-sulfur and moisture-resistant properties, making it suitable for harsh operating environments. The part is currently in active production status with 1845 units available in inventory. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility is required within specified electrical and mechanical parameters.

Substiute Parts

TNPW0805499RBYEN

Vishay DaleIn Stock: 1941TNPW0805499RBYEN Datasheet

Current PartRFQ

RQ73C2A499RBTD

TE Connectivity Passive ProductIn Stock: 15188RQ73C2A499RBTD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TNPW0805499RBYEN is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 499 Ohms (exact match required)
• Tolerance: ±0.1% (exact match required)
• Temperature coefficient: ±10ppm/°C (exact match required)
• Composition: Thin Film (exact match required)

Mechanical Parameters:

• Package type: 0805 (2012 Metric) (exact match required)
• Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) (exact match required)

Compliance & Ratings:

• Automotive qualification: AEC-Q200 (required for automotive applications)
• RoHS compliance: ROHS3 Compliant (required for regulatory compliance)
• Moisture Sensitivity Level: 1 (Unlimited) (required for reliability)

Power Rating Consideration: The substitute part RQ73C2A499RBTD operates at 0.2W (1/5W), which is lower than the primary part's 0.26W rating. This substitute is valid for applications where the actual power dissipation does not exceed 0.2W, ensuring the component operates within its rated specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The TNPW0805499RBYEN is the specified component and should be used when available. It provides the full 0.26W power rating and extended operating temperature range to 175°C, offering maximum design margin for automotive applications.

Substitute Part Selection: The RQ73C2A499RBTD is a valid substitute when the TNPW0805499RBYEN is unavailable, subject to the following conditions:

1. Power Dissipation Verification: The actual circuit power dissipation at the 499 Ohm resistor must not exceed 0.2W. Applications requiring power dissipation between 0.2W and 0.26W are not suitable for this substitute.

2. Temperature Range Verification: The operating environment must remain within -55°C to 155°C. Applications requiring operation above 155°C are not suitable for this substitute.

3. PCB Layout Consideration: The substitute part has a maximum seated height of 0.026" (0.65mm) compared to the primary part's 0.022" (0.55mm). PCB clearance and component stacking must accommodate this 0.004" (0.10mm) height difference.

4. Compliance Confirmation: Both parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating, ensuring regulatory and reliability requirements are met.

Frequently Asked Questions (FAQ)

Q: Can the RQ73C2A499RBTD substitute for the TNPW0805499RBYEN in all applications?

A: No. The substitute part has a lower power rating (0.2W versus 0.26W) and a narrower operating temperature range (-55°C to 155°C versus -55°C to 175°C). Substitution is valid only when actual power dissipation does not exceed 0.2W and operating temperature remains below 155°C.

Q: Are there any physical compatibility issues between these parts?

A: Both parts use the 0805 (2012 Metric) package with identical length and width dimensions (0.079" x 0.049"). However, the substitute part has a maximum seated height of 0.026" compared to 0.022" for the primary part. PCB layout must accommodate this 0.004" height difference to prevent clearance violations.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the TNPW0805499RBYEN and RQ73C2A499RBTD carry AEC-Q200 automotive qualification, making them suitable for automotive applications within their respective electrical and thermal specifications.

Q: What is the difference in tolerance between these parts?

A: There is no difference. Both parts maintain ±0.1% tolerance and ±10ppm/°C temperature coefficient, ensuring equivalent precision performance in circuit applications.

Q: Are there any environmental or compliance differences?

A: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. The primary part lists REACH as "REACH Unaffected" while the substitute lists "Vendor Undefined." For applications requiring specific REACH compliance documentation, the primary part is recommended.

Q: What is the inventory status of each part?

A: The TNPW0805499RBYEN has 1845 units in stock. The RQ73C2A499RBTD has 15106 units in stock, providing greater availability as a substitute option.