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Home > Products > Resistors > Chip Resistor - Surface Mount > RN73H2BTTD64R9C50
KOA Speer Electronics, Inc.
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RN73H2BTTD64R9C50

In Stock 146350 pcs Reference Price(In US Dollars)
1000+
$0.1605
Manufacturer Part Number:
RN73H2BTTD64R9C50
Manufacturer / Brand
KOA Speer Electronics, Inc.
Part of Description:
RES 64.9 OHM 0.25% 1/4W 1206
Datasheets:
RN73H2BTTD64R9C50(1).pdfRN73H2BTTD64R9C50(2).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 146350 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number RN73H2BTTD64R9C50
Manufacturer / Brand KOA Speer Electronics, Inc.
Stock Quantity 146350 pcs Stock
Category Resistors > Chip Resistor - Surface Mount
Description RES 64.9 OHM 0.25% 1/4W 1206
Lead Free Status / RoHS Status: ROHS3 Compliant
Tolerance ±0.25%
Temperature Coefficient ±50ppm/°C
Supplier Device Package 1206
Size / Dimension 0.126" L x 0.063" W (3.20mm x 1.60mm)
Series RN73H
Resistance 64.9 Ohms
Ratings AEC-Q200
Power (Watts) 0.25W, 1/4W
Package / Case 1206 (3216 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 155°C
Number of Terminations 2
Height - Seated (Max) 0.028" (0.70mm)
Features Automotive AEC-Q200, Moisture Resistant
Failure Rate -
Composition Metal Film
Base Product Number RN73H2B

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

Can RN73H2BTTD64R9C50 be used in precision analog feedback or divider networks where the resistor ratio affects calibration?
Yes. RN73H2BTTD64R9C50 is a good fit for precision analog nodes because its 0.25% tolerance and 50 ppm/°C tempco help keep ratio error and drift controlled over temperature. For best results, place it close to the active device, keep the surrounding copper thermally symmetric, and avoid routing high heat sources under the part. If the circuit depends on matched ratios, use parts from the same lot or a matched resistor network rather than relying on individual replacement parts alone.
Is RN73H2BTTD64R9C50 suitable for current sensing or low-ohm shunt replacement in power stages?
RN73H2BTTD64R9C50 is usually not the right choice for true current shunt sensing because 64.9 ohms is far too high for low-loss measurement in power paths. It is better suited to biasing, termination, filtering, and signal conditioning. If you need current feedback, use a dedicated milliohm shunt with defined Kelvin connections and low inductance, because RN73H2BTTD64R9C50 would introduce excessive voltage drop and self-heating.
How much power derating should I expect when using RN73H2BTTD64R9C50 in a warm automotive or industrial enclosure?
RN73H2BTTD64R9C50 is rated at 0.25 W, but continuous dissipation should be reduced as board temperature rises and as nearby components heat the PCB. In enclosed automotive or industrial assemblies, the effective allowable power can be well below the nominal rating, so it is better to design with thermal margin rather than operate near the limit. Check both steady-state dissipation and pulse energy, especially if the resistor sees startup, fault, or transient loading.
Can RN73H2BTTD64R9C50 replace a standard 68 ohm 1206 thick-film resistor without circuit changes?
RN73H2BTTD64R9C50 can often replace a 68 ohm part only when the circuit is tolerant of a small resistance shift and tighter accuracy is not required. The 64.9 ohm value changes gain, bias, RC time constants, and termination impedance enough to matter in some designs. If the original design was tuned around 68 ohms, confirm timing, filter corner frequency, startup behavior, and output levels before swapping RN73H2BTTD64R9C50 in as a drop-in.
Is RN73H2BTTD64R9C50 a good choice for automotive ECUs and other AEC-Q200: applications?
RN73H2BTTD64R9C50 is appropriate for automotive-grade PCB designs because it is AEC-Q200: rated and moisture resistant, which supports use in harsher operating environments. That said, the qualification does not replace system-level validation for vibration, board flex, conformal coating, solder profile, and long-term thermal cycling. For ECU use, verify the full assembly process and make sure the resistor is not exposed to repeated mechanical stress from connector loading or PCB bending.
What should I consider when designing the PCB footprint for RN73H2BTTD64R9C50 in a vibration-prone assembly?
RN73H2BTTD64R9C50 uses a 1206 package, so the land pattern should support reliable solder fillets without creating excessive stress at the terminations. In vibration-prone assemblies, keep the part away from board edges, mounting holes, and flex points, and avoid placing large components nearby that can induce strain during shock or thermal expansion. A well-balanced footprint and proper solder volume help reduce crack initiation over time.
Can RN73H2BTTD64R9C50 be used in high-temperature environments up to 155 C?
RN73H2BTTD64R9C50 can operate up to 155 C ambient, but the actual design limit depends on self-heating, PCB copper area, and nearby heat sources. At elevated temperature, resistor drift and reliability are usually driven by how much electrical power is dissipated at the part, not just the ambient rating. If the application is under-hood or near power electronics, validate the resistor temperature rise on the assembled board rather than relying only on the catalog temperature range.
If RN73H2BTTD64R9C50 is unavailable, what replacement strategy makes the least amount of redesign?
The closest replacement for RN73H2BTTD64R9C50 is another 64.9 ohm, 0.25%, 1206 precision metal-film resistor with similar temperature coefficient, moisture resistance, and automotive qualification. If the substitute uses a different technology, such as thick film, expect changes in tempco, long-term drift, noise, and pulse behavior. Before approving a substitute, compare resistance tolerance, TC, power derating, package dimensions, and qualification level so the circuit does not shift during production or field use.

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RN73H2BTTD64R9C50

RN73H2BTTD64R9C50

KOA Speer Electronics, Inc.

RES 64.9 OHM 0.25% 1/4W 1206

In Stock: 146350

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