The YB-E Series is a compact single-phase EMI filter family for equipment builders who need a practical front-end filtering option before final EMC verification, panel release, or supplier approval. For system integrators, panel builders, procurement teams, and electrical engineers, the value is not only the filter itself; it is the ability to confirm rated current, voltage range, wiring format, case size, grounding strategy, documentation, and project fit quickly enough to move an RFQ forward.
TPS ELECTRIC supports global B2B customers with single-phase EMI filters, related power products, integration guidance, and project-level sourcing support. Use this guide to understand when the YB-E Series single-phase EMI filter is a good candidate, what details should be confirmed during supplier screening, and what information to prepare for a faster quote.
YB-E Series Overview
The YB-E Series is designed as a single-phase EMI filter for 115/250V systems and DC to 400Hz applications. The product information identifies rated currents from 1A to 20A, four mechanical case options from E1 to E4, and output modes including 6.3mm x 0.8mm quick-connect terminals, screw connection, and wire output. This makes the series relevant for compact equipment where the filter must fit into a limited mechanical envelope while still providing general-purpose filtering performance.
From a purchasing standpoint, the YB-E Series should be evaluated as an RFQ-ready component family rather than as a one-size-fits-all item. The same equipment platform may need different current ratings, terminal formats, or case layouts depending on the load current, inrush behavior, grounding approach, installation space, and required approvals. TPS can help customers review these details and identify whether the YB-E Series or another TPS-supported EMI filter solution is the better fit.
For engineers, the key question is where the filter sits in the system. In many compact AC input designs, the EMI filter is placed near the mains entry point, ahead of the power conversion stage, and bonded to chassis ground with short, low-impedance connections. For panel builders, the question is often more mechanical: which case, termination, and mounting pattern can be installed repeatably without forcing wiring rework or field service complications?
Selection Logic for RFQ Projects
BoFu buyers usually already know they need EMI control. Their main challenge is to select a supplier and a product format that can survive engineering review, procurement approval, and real installation conditions. A fast but disciplined selection process starts with four checks: electrical rating, noise source, mechanical format, and compliance pathway.
1. Confirm Electrical Rating Before Form Factor
Start with the steady-state input current, voltage class, input frequency, and expected ambient temperature around the filter. The YB-E Series covers 1A to 20A and 115/250V with DC to 400Hz capability, but the final rating must be selected against the real equipment load. Avoid using the nominal fuse value alone as the selection basis. A filter that is too small may run hot or create field reliability concerns; a filter that is oversized may waste valuable cabinet space.
2. Match the Filter to the Noise Source
Compact switch-mode power supplies, motorized subsystems, displays, chargers, communication electronics, and measurement circuits can all create different conducted noise patterns. If your equipment has failed or narrowly passed a conducted emissions scan, provide the scan summary and line impedance stabilization network setup details during the RFQ. TPS can use that context to advise whether a general-purpose filter is suitable or whether a higher-margin filter, layout change, shielding change, or enclosure bonding review should be considered. For broader power-front-end planning, see the TPS guide to switching DC power supply selection.
Key Technical Parameters
The table below converts the product information into RFQ language. It is intended to help procurement and engineering teams send a complete inquiry instead of a generic “please quote” request.
| Parameter | YB-E Series Information | RFQ Decision Impact |
|---|---|---|
| Product type | Single-phase EMI filter | Used for line-side conducted EMI mitigation in compact electrical and electronic equipment. |
| Operating voltage | 115/250V; DC to 400Hz | Confirm the input system, frequency, and regulatory region before quotation. |
| Rated current range | 1A to 20A | Select based on real load current, thermal margin, and operating duty cycle. |
| Electrical schematic options | 11 or 12 | Provide the target circuit requirement or let TPS review the application context. |
| Case options | E1, E2, E3, E4 | Match available space, mounting holes, terminal access, and enclosure layout. |
| Output mode | Q: 6.3mm x 0.8mm quick terminal; S: screw; W: wire | Controls assembly time, serviceability, and wiring process compatibility. |
| General features | General-purpose filtering performance; compact structure; small size; easy installation | Suitable for equipment platforms where filtering must be added without redesigning the full enclosure. |
Case Options and Mechanical Fit
The YB-E Series includes compact E1 through E4 case options. The product drawings show approximate envelopes ranging from the small E2 package around 44 x 22 x 29mm to the larger E4 package around 70.5 x 30 x 50mm, depending on view and mounting feature. Because the filter must often sit near the power entry point, mechanical fit should be reviewed together with cable bend radius, service access, creepage and clearance strategy, and screw or terminal access.
If you are already developing an industrial control cabinet or equipment subpanel, the filter choice should be discussed together with the cabinet entry, grounding bar, upstream disconnect, fuse, power supply, and downstream load. The TPS article on industrial control cabinets for automation explains why early layout checkpoints prevent rework after the panel is wired.
Integration and Installation Considerations
EMI filters do not work in isolation. A correctly selected filter can lose much of its value if line and load wiring are bundled together, the ground connection is long, the filter is mounted far from the entry point, or the enclosure bond is inconsistent. Electrical engineers should treat the filter, wiring, chassis, and downstream power stage as one conducted-emissions system.
For panel builders, repeatability is the main concern. Define how the filter is mounted, which side is line, which side is load, what torque or terminal process is used, and how wiring is routed away from sensitive signal lines. If the equipment will be built in multiple lots, document the routing and bonding rules so that each build preserves the same EMC behavior.
TPS can support this conversation beyond the individual component. For customers combining EMI filters with power supplies, cable harnesses, enclosure assemblies, or PCB-level power electronics, TPS offers product and solution capabilities that help connect component selection to system integration. Related TPS resources on custom cable assemblies, custom sheet metal enclosures, and electronic manufacturing services for power electronics are useful when the filter is part of a broader equipment build.
Application Fit by Equipment Type
The YB-E Series is positioned for portable electrical and electronic equipment, test and measurement equipment, lamps, advertising equipment, vending equipment, and financial equipment. These applications often share a similar commercial requirement: the device must be compact, cost-controlled, and repeatable, but it cannot create conducted EMI problems that delay launch, certification, or installation.
Test and Measurement Equipment
Measurement equipment can be sensitive to mains-borne noise and may also contain internal switching supplies, displays, USB interfaces, motors, or communication modules. A compact single-phase EMI filter can help reduce conducted noise at the input stage, especially when paired with clean grounding and proper cable routing. Procurement teams should provide TPS with the equipment input current, enclosure type, target market, and any previous EMC test observations.
Vending, Financial, and Public-Use Equipment
Vending systems, payment terminals, advertising displays, kiosks, and similar public-use devices often combine motors, lamps, displays, card readers, controllers, and communication electronics. The YB-E Series can be evaluated where a small single-phase filter is needed to reduce line-side conducted noise without making the product enclosure larger. When the project also needs a stable DC front end, the TPS guide to 24V DIN rail power supply selection may help align the filter and power supply discussion.
Compliance, Reliability, and Verification
The product information shows multiple approval and environmental marks. During supplier evaluation, do not assume that a component mark automatically guarantees finished-equipment compliance. EMI filters are evaluated as part of the full system, including cable layout, enclosure, grounding, power conversion stage, and test setup. For passive EMI filter safety considerations, engineering teams may reference official standards such as IEC 60939-3. For U.S. equipment programs involving conducted emissions limits, the official eCFR page for 47 CFR 15.207 is one common regulatory reference point.
Reliability review should also include thermal margin, installation environment, vibration or transport conditions, terminal retention, and service access. For example, a filter installed inside a sealed compact enclosure may experience higher operating temperature than the same filter installed in a ventilated cabinet. A procurement-only review may miss this detail, so the RFQ should involve engineering early.
TPS can support project selection by reviewing the required current range, output mode, case option, installation position, and available compliance information. If the YB-E Series is not the best fit, TPS can discuss an equivalent filter, a different single-phase filter family, or a system-level solution that combines filtering with power supply, enclosure, harness, and test support. For related EMI filter comparisons, see the TPS resources on YB-T Series single-phase AC line filter selection and three-phase EMI filters for industrial panels.
RFQ Checklist
A complete inquiry helps TPS respond faster and reduces back-and-forth clarification. Include the following information when requesting a quotation for the YB-E Series single-phase EMI filter:
Move from Component Search to Supplier Confirmation
If your team is validating a compact single-phase EMI filter for a new equipment build, replacement project, or EMC improvement action, TPS can help confirm the right current rating, case option, output mode, and documentation path. The goal is to turn product selection into a clear quotation package that engineering, procurement, and project management can all approve.
FAQ
What is the YB-E Series used for?
The YB-E Series is a compact single-phase EMI filter family used to help reduce conducted electromagnetic interference at the equipment power input. Typical applications include portable electrical and electronic equipment, test and measurement devices, lamps, advertising equipment, vending equipment, and financial equipment.
How do I choose the right current rating?
Start with the actual operating current, duty cycle, ambient temperature, and available thermal margin. The series covers 1A to 20A, but the final rating should be selected against real system conditions rather than the nameplate value alone.
Which output mode should I request?
Use Q for 6.3mm x 0.8mm quick-connect terminals, S for screw connection, and W for wire output. The best option depends on your assembly process, serviceability expectations, wiring standard, and available space.
Does an EMI filter guarantee that my equipment will pass EMC testing?
No. EMI filter performance depends on the complete installation, including grounding, enclosure design, cable routing, power conversion stage, and test setup. TPS can support product selection and help review the broader integration context before final verification.
What should I send to TPS for a faster quote?
Send the required current rating, voltage/frequency, application type, preferred case option, output mode, target sales region, quantity, delivery location, and any existing EMC test results. You can start from the YB-E Series product page and request quotation support directly.
