Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
ISC1812ES821K
Vishay Dale
FIXED IND 820UH 72MA 13.5OHM SMD
3347 Pcs New Original In Stock
820 µH Shielded Drum Core, Wirewound Inductor 72 mA 13.5Ohm Max 1812 (4532 Metric)
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (501 Ratings)
ISC1812ES821K
Product Overview
1390536
DiGi Electronics Part Number
ISC1812ES821K-DGManufacturer
Vishay Dale
ISC1812ES821K
Description
FIXED IND 820UH 72MA 13.5OHM SMDInventory
3347 Pcs New Original In Stock
820 µH Shielded Drum Core, Wirewound Inductor 72 mA 13.5Ohm Max 1812 (4532 Metric)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
ISC1812ES821K Technical Specifications
Category
Fixed Inductors
Packaging
Tape & Reel (TR)
Series
ISC-1812
Product Status
Active
Type
Drum Core, Wirewound
Material - Core
Ferrite
Inductance
820 µH
Tolerance
±10%
Current Rating (Amps)
72 mA
Current - Saturation (Isat)
-
Shielding
Shielded
DC Resistance (DCR)
13.5Ohm Max
Q @ Freq
30 @ 796kHz
Frequency - Self Resonant
2.2MHz
Ratings
-
Operating Temperature
-55°C ~ 125°C
Inductance Frequency - Test
796 kHz
Mounting Type
Surface Mount
Package / Case
1812 (4532 Metric)
Supplier Device Package
1812
Size / Dimension
0.177" L x 0.126" W (4.50mm x 3.20mm)
Height - Seated (Max)
0.134" (3.40mm)
Datasheet & Documents
HTML Datasheet
ISC1812ES821K-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8504.50.8000
Additional Information
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Great pricing that fits my budget perfectly.
Dec 02, 2025
Every product I've used from DiGi Electronics demonstrates their commitment to excellence.
Dec 02, 2025
Their professionalism creates a trustworthy and reliable partnership.
Dec 02, 2025
Their prices are hard to beat, and the staff creates a pleasant shopping environment.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
Can the ISC1812ES821K be used in high-frequency DC-DC converters near its self-resonant frequency of 2.2MHz without risking inductance roll-off or EMI issues?
Using the ISC1812ES821K near its self-resonant frequency (2.2MHz) risks significant inductance drop and increased EMI due to capacitive behavior. For stable performance, operate the ISC1812ES821K at least one decade below resonance—ideally below 220kHz. If your DC-DC converter switches above 1MHz, consider a higher SRF inductor like the Wurth Electronics 7443308220 (SRF: 4.5MHz) or verify impedance characteristics under actual bias conditions to avoid regulation issues and noise coupling in sensitive circuits.
Is the ISC1812ES821K a reliable drop-in replacement for the TDK VLS1812ET-821M in space-constrained power management designs?
The ISC1812ES821K is dimensionally and electrically comparable to the TDK VLS1812ET-821M (both 1812 shielded ferrite drum core, ~820µH, ~70–80mA rating), making it a viable drop-in alternative. However, the ISC1812ES821K has a slightly higher max DCR (13.5Ω vs ~11Ω) which may increase I²R losses in battery-powered applications. Confirm thermal performance under load and verify saturation characteristics—if your design approaches 72mA peak current, derate by at least 20% or assess the Coilcraft MLA1608S-821K (lower DCR, smaller size) for higher efficiency.
What design risks should be considered when using the ISC1812ES821K in automotive environments with wide temperature swings from -40°C to 125°C?
The ISC1812ES821K is rated for -55°C to 125°C, making it suitable for automotive underhood environments. However, ensure derating for both current and inductance stability: ferrite core permeability can decrease at temperature extremes, affecting loop stability in feedback-controlled power supplies. Also, thermal expansion mismatch on high-Tg PCBs may stress 1812 solder joints—use footprint-reinforced land patterns and avoid placing near mechanical stress points. Monitor long-term reliability with HALT testing if used in safety-critical modules.
How does the lack of specified Isat (current saturation) in the ISC1812ES821K datasheet impact design-in confidence for transient-heavy loads?
The absence of Isat in the ISC1812ES821K datasheet introduces risk in applications with transient or pulsed currents, as core saturation could cause abrupt inductance collapse and overcurrent in switching regulators. Relying only on the 72 mA rated current (thermal limit) is insufficient for dynamic loads. To mitigate, estimate saturation via the Q vs. frequency curve or test with a current sweep in your layout. For better predictability, consider the Bourns SRP1010-821Y (specified Isat = 80mA) or consult Vishay for supplemental test data before finalizing high-reliability designs.
Can the ISC1812ES821K handle moderate ripple current in a low-power buck converter without overheating, given its 13.5Ω max DCR?
The ISC1812ES821K’s 13.5Ω max DCR limits its use in even moderate ripple current applications—72mA RMS generates up to 70mW of resistive loss (I²R), which in a 1812 package can raise internal temperature significantly in still air or poorly heatsunk layouts. Use thermal vias beneath the pad and keep ambient temperatures below 105°C. If ripple current exceeds 50mA RMS, consider a lower-DCR alternative like the Taiyo Yuden NPC1230T-821K (DCR: ~9Ω) or parallel two units if space allows, ensuring balanced current sharing.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
ISC1812ES821K CAD Models
Vishay Dale ISC1812ES821K PCB symbols & footprints
productDetail
