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TCM4-1W+
Mini-Circuits
1:4 CORE & WIRE TRANSFORMER, 3 -
23354 Pcs New Original In Stock
RF Balun 3MHz ~ 800MHz 1:4 6-SMD Module
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*Quantity
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Minimum 1
5.0 / 5.0
- (47 Ratings)
TCM4-1W+
Product Overview
9832452
DiGi Electronics Part Number
TCM4-1W+-DGManufacturer
Mini-Circuits
TCM4-1W+
Description
1:4 CORE & WIRE TRANSFORMER, 3 -Inventory
23354 Pcs New Original In Stock
RF Balun 3MHz ~ 800MHz 1:4 6-SMD Module
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.
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Worldwide Delivery in 3-5 Business Days
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TCM4-1W+ Technical Specifications
Category
Balun
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Frequency Range
3MHz ~ 800MHz
Impedance - Unbalanced/Balanced
1:4
Phase Difference
-
Insertion Loss (Max)
3dB
Return Loss (Min)
9.01dB
Package / Case
6-SMD Module
Mounting Type
Surface Mount
Datasheet & Documents
HTML Datasheet
TCM4-1W+-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8504.31.4035
Additional Information
Other Names
3157-TCM4-1W+CT
3157-TCM4-1W+DKR
3157-TCM4-1W+TR
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
The quality assurance process at DiGi Electronics is truly reassuring.
Dec 02, 2025
Their reliable products are a testament to their commitment to value.
Dec 02, 2025
Their consistent product performance reassures me that I am making a reliable choice.
Dec 02, 2025
Their logistics management ensures a smooth experience from order to delivery.
Dec 02, 2025
I highly value their logistics tracking system, as it kept me informed and reassured during the entire shipping process.
Dec 02, 2025
Their affordable pricing makes it easier for me to upgrade my gaming gear without worrying about sacrificing quality.
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Frequently Asked Questions (FAQ)
What are the critical layout considerations when designing a PCB for the TCM4-1W+ RF balun to maintain impedance matching and minimize insertion loss above 500MHz?
When integrating the TCM4-1W+ into a high-frequency design, maintain tight control over transmission line geometry by using grounded coplanar waveguide or microstrip with a solid reference plane directly beneath the device. Keep input and output traces symmetrical and as short as possible to preserve balance and reduce parasitic inductance. Avoid vias near the balun pads, and ensure the ground plane is uninterrupted under the component to prevent phase imbalance and degradation of return loss. Poor layout above 500MHz can increase insertion loss beyond the 3dB spec and cause impedance mismatch, especially in 1:4 impedance transformation applications like 50Ω to 200Ω interfaces.
Can the TCM4-1W+ be safely replaced with the Anaren 1A1392 or the Marki Microwave BAL-0006SMG in a 400–600MHz receiver front-end without redesigning the matching network?
Direct replacement of the TCM4-1W+ with the Anaren 1A1392 or Marki BAL-0006SMG is not recommended without re-evaluating the matching network. While all three are 1:4 impedance ratio baluns covering similar frequencies, the TCM4-1W+ has a lower insertion loss (max 3dB) and better return loss (min 9.01dB) in the 400–600MHz range compared to the 1A1392’s higher loss and the BAL-0006SMG’s narrower optimal bandwidth. Additionally, package parasitics and internal winding configurations differ, which can shift the optimal operating impedance. Always perform S-parameter simulation or bench validation to confirm performance, especially in sensitive receiver chains where noise figure and gain flatness are critical.
How does DC bias current affect the performance of the TCM4-1W+ when used in a bias-T configuration for active antenna applications, and what is the maximum allowable DC current?
The TCM4-1W+ is not designed to carry significant DC current through its windings, as it uses core-and-wire construction optimized for RF signal integrity, not power handling. Applying DC bias—common in active antenna or LNA-powered systems—can saturate the ferrite core, leading to increased insertion loss, harmonic distortion, and degraded phase balance. Mini-Circuits does not specify a DC current rating, so any DC path should be isolated using series capacitors or external bias tees. If DC feed is unavoidable, limit current to <10mA and verify performance with network analyzer measurements, as even small DC levels can shift the lower cutoff frequency and compromise 3MHz operation.
Is the TCM4-1W+ suitable for use in a 5G sub-6GHz massive MIMO array where phase consistency across multiple channels is critical, and how should units be selected for phase matching?
The TCM4-1W+ can be used in sub-6GHz MIMO systems, but phase consistency across units is not tightly controlled in standard production, making it risky for beamforming applications requiring <5° phase mismatch. While the device maintains good amplitude balance, phase variation between individual TCM4-1W+ units can exceed 10° over 300–800MHz, especially near band edges. For critical arrays, request phase-matched binning from Mini-Circuits or consider higher-precision alternatives like the TCM1-63AX+. Alternatively, calibrate each channel in software or use a common reference balun topology to minimize inter-channel phase drift.
What reliability risks should be considered when using the TCM4-1W+ in high-vibration industrial environments, and does its MSL-1 rating imply robustness against thermal cycling?
Although the TCM4-1W+ carries an MSL-1 (unlimited floor life) rating, indicating excellent moisture resistance and reflow stability, its mechanical reliability in high-vibration settings depends on PCB mounting and solder joint integrity. The 6-SMD package lacks through-hole anchors, making it susceptible to fatigue under continuous mechanical stress. In industrial or automotive environments, reinforce the assembly with underfill epoxy or conformal coating to prevent pad lifting. Additionally, thermal cycling can induce stress at the wire-to-pad interface due to CTE mismatch; limit operational temperature swings and avoid rapid thermal transients. Always conduct HALT (Highly Accelerated Life Testing) if deploying in mission-critical, high-stress applications.
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.
TCM4-1W+ CAD Models
Mini-Circuits TCM4-1W+ PCB symbols & footprints
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