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Home > Products > Potentiometers, Variable Resistors > Trimmer Potentiometers > ST-4EA200
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ST-4EA200

In Stock 24858 pcs Reference Price(In US Dollars)
1+
$2.0117
200+
$0.8038
500+
$0.7766
1000+
$0.7638
Manufacturer Part Number:
ST-4EA200
Manufacturer / Brand
Nidec Components Corporation
Part of Description:
TRIMMER 20 OHM 0.25W J LEAD TOP
Datasheets:
ST-4EA200(1).pdfST-4EA200(2).pdfST-4EA200(3).pdf
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 24858 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number ST-4EA200
Manufacturer / Brand Nidec Components Corporation
Stock Quantity 24858 pcs Stock
Category Potentiometers, Variable Resistors > Trimmer Potentiometers
Description TRIMMER 20 OHM 0.25W J LEAD TOP
Lead Free Status / RoHS Status: RoHS Compliant
Tolerance ±20%
Termination Style J Lead
Temperature Coefficient ±250ppm/°C
Size / Dimension Rectangular - 0.197" x 0.177" Face (5.00mm x 4.50mm)
Series ST4
Resistive Material Cermet
Resistance 20 Ohms
Power (Watts) 0.25W, 1/4W
Package Bulk
Number of Turns 1
Mounting Type Surface Mount
Adjustment Type Top Adjustment

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.



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Frequently Asked Questions

How should ST-4EA200: be used when the circuit only has a 3.3 V supply rail?
ST-4EA200: can be used on a 3.3 V rail when the wiper voltage range needed by the circuit stays within that supply. Because the part is a 20 ohm trimmer, it is typically used for low-value trimming or offset setting, not for creating large voltage spans. In 3.3 V systems, verify that the trim network does not load the reference source excessively and that the adjusted voltage range still meets the control input requirements of the downstream IC or amplifier.
Can ST-4EA200: replace a leaded through-hole trimmer in an existing design?
ST-4EA200: is a surface-mount J-lead trimmer, so it can replace a through-hole part only if the PCB footprint, solder profile, and mechanical retention are adapted accordingly. In retrofit designs, check board land pattern compatibility, access for top adjustment, and whether the original mechanical envelope allowed enough clearance for a 5.00 mm x 4.50 mm body.
Is ST-4EA200: suitable for precision calibration circuits?
ST-4EA200: can work in calibration circuits where a 20 ohm trimming range is sufficient, but it is not a high-precision trim element by itself because the tolerance is ±20% and the temperature coefficient is ±250 ppm/°C. If the circuit needs tight absolute accuracy or long-term stability, designers usually budget for the trimmer variation in the calibration procedure or choose a higher-precision trim network.
What should be checked before using ST-4EA200: in a current-setting application?
For ST-4EA200: in a current-setting role, confirm that the 0.25 W power rating is not exceeded at the maximum expected current and that the wiper contact does not create an unwanted series resistance jump. Since the resistance is only 20 ohms, the usable adjustment window is narrow, so the surrounding resistor values and the target current range should be calculated carefully before committing to the part.
How does the top-adjustment style of ST-4EA200: affect enclosure design?
ST-4EA200: uses top adjustment, which means the enclosure or adjacent components must leave vertical access to the adjustment tool. If the board is assembled into a compact housing, confirm that the screwdriver path is unobstructed and that repeated adjustment will not stress nearby connectors, shields, or tall components.
Can ST-4EA200: be used as a direct substitute for PVG3A201A01R00?
ST-4EA200: may be considered against PVG3A201A01R00 only after comparing resistance value, adjustment range, package style, and mechanical footprint. Even when the electrical function is similar, differences in lead form, body size, and turn count can change how the part fits into the trim network and how fine the adjustment feels during production calibration.
Is ST-4EA200: a good choice for industrial equipment that sees vibration and thermal cycling?
ST-4EA200: can be used in industrial equipment, but the design should account for vibration, solder joint fatigue, and drift from thermal cycling. The cermet resistive element is typically chosen for stable trimming behavior, yet the final reliability still depends on PCB mounting quality, the number of adjustment operations, and how much mechanical strain reaches the J-lead terminations.
What design issues come up when ST-4EA200: is used near sensitive analog inputs?
When ST-4EA200: is placed near high-impedance analog nodes, leakage, noise pickup, and adjustment sensitivity can affect the final setpoint. A low-value trimmer like ST-4EA200: is usually easier to control in low-impedance networks, so for sensitive inputs it helps to keep trace lengths short, avoid contamination around the adjustment area, and verify the final trim range under real operating conditions.
How should the adjustment range of ST-4EA200: be evaluated in a new schematic?
ST-4EA200: should be evaluated as part of the full resistor network, not as an isolated 20 ohm component. The key check is whether the maximum and minimum wiper positions produce the required circuit behavior across process variation, supply tolerance, and temperature. If the trim range is too narrow, the part may only allow fine correction and not full functional adjustment.
What should be considered when selecting ST-4EA200: for long-term product support?
For long-term support, ST-4EA200: should be reviewed for footprint continuity, alternates availability, and whether the trim range can be preserved with a second source. Because replacement parts may differ in turn count, lead style, or package outline, keeping the schematic and land pattern flexible can reduce redesign risk if the original ST-4EA200: ever needs to be migrated.
Does ST-4EA200: work well in automated assembly and reflow processes?
ST-4EA200: is a surface-mount device, so it is generally compatible with automated assembly if the PCB footprint and reflow profile follow the manufacturer’s recommended conditions. The J-lead form helps with solder wetting, but the process still needs to control paste volume and placement accuracy so the final adjustment access and electrical contact remain consistent.
When would ST-4EA200: not be the right trimmer choice?
ST-4EA200: is not a strong fit when the application needs a wide resistance span, multi-turn fine tuning, or very tight absolute tolerance without calibration. In those cases, a different trimmer topology or a higher-value, multi-turn alternative may provide better adjustment resolution, more margin during bring-up, and less sensitivity to temperature drift.

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ST-4EA200

Nidec Components Corporation

TRIMMER 20 OHM 0.25W J LEAD TOP

In Stock: 24858

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