Please refer to the English Version as our Official Version.

Europe: France~~(Français)~~ Germany~~(Deutsch)~~ Italy~~(Italia)~~ Russian~~(русский)~~ Poland~~(polski)~~ Czech~~(Čeština)~~ Luxembourg~~(Lëtzebuergesch)~~ Netherlands~~(Nederland)~~ Iceland~~(íslenska)~~ Hungarian~~(Magyarország)~~ Spain~~(español)~~ Portugal~~(Português)~~ Turkey~~(Türk dili)~~ Bulgaria~~(Български език)~~ Ukraine~~(Україна)~~ Greece~~(Ελλάδα)~~ Israel~~(עִבְרִית)~~ Sweden~~(Svenska)~~ Finland~~(Svenska)~~ Finland~~(Suomi)~~ Romania~~(românesc)~~ Moldova~~(românesc)~~ Slovakia~~(Slovenská)~~ Denmark~~(Dansk)~~ Slovenia~~(Slovenija)~~ Slovenia~~(Hrvatska)~~ Croatia~~(Hrvatska)~~ Serbia~~(Hrvatska)~~ Montenegro~~(Hrvatska)~~ Bosnia and Herzegovina~~(Hrvatska)~~ Lithuania~~(lietuvių)~~ Spain~~(Português)~~ Switzerland~~(Deutsch)~~ United Kingdom~~(English)~~

Asia/Pacific: Japan~~(日本語)~~ Korea~~(한국의)~~ Thailand~~(ภาษาไทย)~~ Malaysia~~(Melayu)~~ Singapore~~(Melayu)~~ Vietnam~~(Tiếng Việt)~~ Philippines~~(Pilipino)~~

Africa, India and Middle East: United Arab Emirates~~(العربية)~~ Iran~~(فارسی)~~ Tajikistan~~(فارسی)~~ India~~(हिंदी)~~ Madagascar~~(malaɡasʲ)~~

South America / Oceania: New Zealand~~(Maori)~~ Brazil~~(Português)~~ Angola~~(Português)~~ Mozambique~~(Português)~~

North America: United States~~(English)~~ Canada~~(English)~~ Haiti~~(Ayiti)~~ Mexico~~(español)~~

Home Products Inductors, Coils, Chokes Fixed Inductors~~NRS8040T0R9NJGJV~~

Image may be representation.
See specifications for product details.

~~Favorite~~

EXPRESS OPTION

Payment method

NRS8040T0R9NJGJV - Taiyo Yuden

Manufacturer Part Number: NRS8040T0R9NJGJV

Manufacturer: Taiyo Yuden

Allelco Part Number: 98D-NRS8040T0R9NJGJV

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 29,542 pcs available, New & Original

Parts Description: FIXED IND 900NH 7.8A 7.8MOHM SMD

Package: Nonstandard

Data sheet: NRS8040T0R9NJGJ.pdf

Datasheets
NRS8040T0R9NJGJV Spec Sheet.pdf NR(H,S,V) Series HQ Catalog.pdf

PCN Part Status Change
Mult Devs NRND 01/Apr/2023.pdf

PCN Part Number
Mult Devs Part Number 23/Sep/2022.pdf

RoHs Status: ROHS3 Compliant

~~Compare~~

Our certification

In stock: 29542

Unit Price: $0.339
Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity	Unit Price	Ext. Price
1+	$0.339	$0.34

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

NRS8040T0R9NJGJV Tech Specifications
Taiyo Yuden - NRS8040T0R9NJGJV technical specifications, attributes, parameters and parts with similar specifications to Taiyo Yuden - NRS8040T0R9NJGJV

Product Attribute	Attribute Value
Manufacturer	Taiyo Yuden
Type	Drum Core, Wirewound
Tolerance	±30%
Supplier Device Package	-
Size / Dimension	0.315" L x 0.315" W (8.00mm x 8.00mm)
Shielding	Shielded
Series	NR, S Type
Ratings	AEC-Q200
Q @ Freq	-
Package / Case	Nonstandard
Package	Tape & Reel (TR)

Product Attribute	Attribute Value
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Material - Core	Ferrite
Inductance Frequency - Test	100 kHz
Inductance	900 nH
Height - Seated (Max)	0.165" (4.20mm)
Frequency - Self Resonant	85MHz
DC Resistance (DCR)	7.8mOhm Max
Current Rating (Amps)	7.8 A
Current - Saturation (Isat)	13A

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8504.50.4000

Frequently Asked Questions(FAQ)

What makes the NRS8040T0R9NJGJV suitable for high-frequency switching applications despite its relatively low inductance value?: The NRS8040T0R9NJGJV is a 900 nH inductor with a self-resonant frequency of 85 MHz, which positions it well above typical switching frequencies in buck converters and DC-DC regulators operating at 1–10 MHz. This elevated SRF allows the NRS8040T0R9NJGJV to maintain relatively stable impedance across the operating band before resonance occurs, reducing impedance peaking and harmonic distortion. The shielded drum core design minimizes radiated EMI, a critical concern in densely packed switching supplies where the NRS8040T0R9NJGJV must coexist with control circuitry and high-speed signal traces.

How does the 7.8 mOhm DCR of the NRS8040T0R9NJGJV affect thermal management in continuous 7.8 A applications?: At the rated 7.8 A continuous current, the NRS8040T0R9NJGJV dissipates approximately 476 mW (I²R = 7.8² × 0.0078), equivalent to roughly 0.48 watts under steady-state conditions. In a compact 8×8 mm footprint, this power density requires careful PCB thermal design, including copper area under and around the component and potential thermal vias to the inner layers. For applications with ambient temperatures approaching the upper 125°C limit or with reduced airflow, designers should verify that local junction temperature remains within material limits by modeling thermal rise or conducting thermal imaging during prototype validation of the NRS8040T0R9NJGJV.

What is the practical difference between the 7.8 A current rating and the 13 A saturation current specification on the NRS8040T0R9NJGJV?: The NRS8040T0R9NJGJV's 7.8 A continuous rating reflects sustained operation within thermal and core-loss budgets, while the 13 A saturation current (Isat) represents the peak current level at which core permeability collapses and inductance drops significantly—typically to 50% or less of nominal value. Transient overshoots or fault currents exceeding 13 A in the NRS8040T0R9NJGJV will cause rapid inductance loss, eliminating filtering effectiveness and potentially allowing destructive current spikes through downstream circuitry. Circuit designers must ensure that protection mechanisms (current limiting, foldback, or shunt regulators) keep normal excursions below saturation to maintain the NRS8040T0R9NJGJV's filtering function.

How does the ±30% inductance tolerance of the NRS8040T0R9NJGJV impact feedback loop stability in switching regulators?: A ±30% tolerance range on the NRS8040T0R9NJGJV (spanning 630 nH to 1170 nH at nominal 900 nH) shifts the LC filter pole frequency by roughly ±15% in a buck converter output filter. Control loop compensation must be designed with sufficient phase margin to accommodate this variation; overly aggressive loop tuning optimized for nominal inductance may become unstable or exhibit excessive ringing when a production batch of NRS8040T0R9NJGJV components falls at tolerance extremes. Design practice typically includes guard-band margin (targeting 45–60° phase margin) and, in precision applications, either binning the NRS8040T0R9NJGJV inductors or implementing adaptive compensation.

Why is the shielded construction of the NRS8040T0R9NJGJV preferred over unshielded alternatives in board-level layout?: The shielded drum core in the NRS8040T0R9NJGJV confines magnetic flux within the ferrite structure, preventing field coupling into adjacent signal traces, clock lines, and sensitive analog circuits on the same PCB. In unshielded inductors, the magnetic fringing field can extend several millimeters radially, inducing cross-talk and noise in nearby traces. The NRS8040T0R9NJGJV's shielding reduces design iterations and layout rework by allowing closer component spacing and simplifying EMC compliance, particularly in systems with mixed-signal or high-speed digital sections where trace coupling is already a concern.

What thermal derating should be applied when operating the NRS8040T0R9NJGJV near its 125°C maximum temperature?: Ferrite core materials used in the NRS8040T0R9NJGJV exhibit increased core losses and reduced permeability at elevated temperatures, typically losing 0.1–0.2% of inductance per °C near room temperature and accelerating above 100°C. At 125°C, the effective inductance of the NRS8040T0R9NJGJV may drop 3–5% compared to 25°C reference values, with corresponding increases in DC losses. Additionally, saturation current (Isat) of the NRS8040T0R9NJGJV typically decreases by 2–3% per 25°C rise. High-temperature applications should derate the continuous current rating of the NRS8040T0R9NJGJV by 10–20% depending on ambient and thermal design, and recalculate loop compensation to account for lower inductance.

How does the NRS8040T0R9NJGJV compare to unshielded alternatives like the AWVS00808040R90T00 in terms of EMI performance and PCB area efficiency?: The NRS8040T0R9NJGJV (shielded) and its unshielded substitute AWVS00808040R90T00 are mechanically and electrically equivalent in DCR and core inductance. However, the NRS8040T0R9NJGJV's shielding adds approximately 0.5–1 mm of effective height and introduces a shield conductor that must be properly grounded to be effective, increasing PCB routing complexity. The NRS8040T0R9NJGJV excels in high-density layouts and systems requiring FCC/CE compliance without additional external shielding cans; the unshielded AWVS00808040R90T00 reduces height and can be used when external filtering or physical separation from sensitive traces is feasible, trading layout simplicity for potential EMI mitigation costs downstream.

What PCB layout practices minimize parasitic inductance effects when using the NRS8040T0R9NJGJV in a buck converter output stage?: The NRS8040T0R9NJGJV's 900 nH inductance is achieved through precise winding; parasitic loop inductance in the power traces connecting the NRS8040T0R9NJGJV to the output filter capacitors can easily add 0.5–2 nH per millimeter of trace separation, degrading transient response and increasing voltage ripple. Best practice includes minimizing trace length between switching node, the NRS8040T0R9NJGJV input, and the filter capacitor return; using wide, short copper fills rather than thin traces; placing the NRS8040T0R9NJGJV output capacitor within 5 mm of the inductor terminals; and returning both components to a solid ground plane through multiple vias. Simulations or transient measurements of the NRS8040T0R9NJGJV node often reveal 20–40% higher dV/dt than datasheet predictions if layout parasitic inductance is not minimized.

Is the NRS8040T0R9NJGJV suitable for automotive applications, and what qualification criteria does it meet?: The NRS8040T0R9NJGJV carries AEC-Q200 qualification, the automotive electronics council standard for passive components, confirming that the device has undergone thermal cycling, mechanical shock, and reliability stress testing per automotive supply-chain requirements. This qualification makes the NRS8040T0R9NJGJV acceptable for use in engine bay, underbody, and other harsh automotive environments within its temperature rating (-40°C to 125°C). However, AEC-Q200 qualification alone does not guarantee suitability for all automotive sub-systems; designers must still verify that the NRS8040T0R9NJGJV meets specific OEM derating policies, moisture tolerance (the NRS8040T0R9NJGJV is MSL-1, unlimited moisture), and any additional reliability or documentation requirements imposed by the vehicle manufacturer.

How does the NRS8040T0R9NJGJV's self-resonant frequency of 85 MHz constrain its use in higher-frequency applications?: Above approximately 80 MHz, the NRS8040T0R9NJGJV transitions from inductive to capacitive behavior as parasitic capacitance dominates, reducing its filtering effectiveness and potentially introducing impedance resonances. For applications using GaN or SiC switching frequencies above 40 MHz, or for high-frequency signal filtering near or above 50 MHz, the NRS8040T0R9NJGJV becomes marginal; alternative inductors with higher SRF (typically achieved through lower inductance or different core geometry) are preferred. Designers working with modern wide-bandgap device topologies should verify switching frequency margin relative to the NRS8040T0R9NJGJV's 85 MHz SRF to ensure stable loop behavior and predictable harmonic attenuation.

What is the expected inductance variation across the -40°C to 125°C operating range for the NRS8040T0R9NJGJV?: Ferrite cores in the NRS8040T0R9NJGJV exhibit temperature coefficient of permeability typically ranging from -2000 to -3000 ppm/°C in the low-frequency region where the NRS8040T0R9NJGJV operates. Over a 165°C temperature span (-40°C to 125°C), this translates to a nominal inductance change of approximately -3.3% to -5% at the 125°C extreme. Combined with the ±30% manufacturing tolerance, worst-case inductance at 125°C could reach 600 nH (low tolerance limit compressed further by temperature), while at -40°C it could exceed 1200 nH (high tolerance limit expanded by temperature). System designers must account for this spread when selecting feedback resistor networks, output capacitors, and compensation networks for the NRS8040T0R9NJGJV to maintain regulated output voltage across the full temperature and component variation envelope.

Can the NRS8040T0R9NJGJV be paralleled to increase current capacity, and what design considerations apply?: Paralleling inductors with different DCR and tolerance values, such as multiple NRS8040T0R9NJGJV units, results in unequal current sharing due to DCR mismatch and inductance variation. At 7.8 A per device, two NRS8040T0R9NJGJV inductors in parallel theoretically support 15.6 A, but manufacturing spread causes one device to carry 40–60% of the current while the other carries 60–40%, leading to uneven thermal stress and potential premature failure. If parallel operation is required, inductors should be matched (binned) to within 5% inductance and current-sharing techniques such as interleaved PWM or equal series impedance matching networks should be employed. In most high-current applications, selecting a single inductor rated for the required current (such as larger Taiyo Yuden models) is simpler and more reliable than paralleling the NRS8040T0R9NJGJV.

What test frequency context should be applied when interpreting the 900 nH specification of the NRS8040T0R9NJGJV?: The NRS8040T0R9NJGJV's 900 nH inductance is measured at 100 kHz per the specification, a standard DC-DC converter switching frequency. At lower test frequencies (e.g., 1 MHz), the NRS8040T0R9NJGJV typically exhibits slightly higher inductance due to reduced core permeability at higher frequencies, while approaching its self-resonant frequency (85 MHz) inductance drops sharply. Designers using the NRS8040T0R9NJGJV in applications below 100 kHz (such as low-frequency PWM dimming or linear regulators) should expect 5–10% higher inductance; those approaching the SRF should expect significant inductance reduction and should verify impedance characteristics through impedance analyzer measurements or supplier-provided Z-parameter data rather than relying solely on the nominal 900 nH value.

Parts with Similar Specifications

The three parts on the right have similar specifications to Taiyo Yuden NRS8040T0R9NJGJV

Product Attribute
Part Number	NRS8040T0R9NJGJ	NRS8040T100MJGJV	NRS8040T150MJGJV	NRS8040T150MJGJ
Manufacturer	Taiyo Yuden	Taiyo Yuden	Taiyo Yuden	Taiyo Yuden
Current - Saturation (Isat)	-	-	-	-
Inductance	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Shielding	-	-	-	-
Ratings	-	-	-	-
Size / Dimension	-	-	-	-
Frequency - Self Resonant	-	-	-	-
Series	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Material - Core	-	-	-	-
Current Rating (Amps)	-	-	-	-
Inductance Frequency - Test	-	-	-	-
Q @ Freq	-	-	-	-
DC Resistance (DCR)	-	-	-	-
Type	-	-	-	-
Tolerance	-	-	-	-
Height - Seated (Max)	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)

NRS8040T0R9NJGJV Datasheet PDF

Download NRS8040T0R9NJGJV pdf datasheets and Taiyo Yuden documentation for NRS8040T0R9NJGJV - Taiyo Yuden.

Datasheets: NRS8040T0R9NJGJV Spec Sheet.pdf NR(H,S,V) Series HQ Catalog.pdf
PCN Part Status Change: Mult Devs NRND 01/Apr/2023.pdf
PCN Part Number: Mult Devs Part Number 23/Sep/2022.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

ECUb***h

Sep 22, 2026

Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.
RS48***ieldTech

Sep 16, 2026

Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.
Logi***b_Chris

Sep 8, 2026

Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.
Circ***FixerTom

Sep 2, 2026

Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.
Retr***UWorks

Aug 31, 2026

Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.
Andr***PCBLab

Aug 28, 2026

I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.
Leat***O'Keefe

Aug 20, 2026

one of my hobbies is skydiving. and when i'm skydiving this works great.
Ilen***

Aug 20, 2026

This product works considerably well. It secretly improves my basketball by a lot.
Indu***ialPower

Aug 17, 2026

Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.
Nikh***ech

Aug 13, 2026

Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

Use your express account for shipment if you have one.
Use our account for the shipment. Refer to the table below for the approximate charges.

(Different time frame / countries / package size has different price.)

Delivery Method

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

QC (Quality Warranty)
Payment Support
Packaging
Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.

Strict quality inspection builds a solid foundation for electronic component quality.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner

Efficient Supply Management
Cost-Saving Procurement
Fast Sourcing & Delivery

Contact us if you have any questions.

Phone: +00852 9146 4856
Email: info@allelco.com

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification

ISO 9001: 2015
ISO 13485: 2016
ISO 14001: 2015
ISO 28000: 2007
ISO 45001: 2018
GB/T 27922-2011

SMTA
IPC
ESD
PSMA