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STMicroelectronics BAL-WILC10-01D3
- Part No.:
- BAL-WILC10-01D3
- Manufacturer:
- STMicroelectronics
- Category:
- Balun
- Package:
- 4-UFBGA, WLCSP
- Datasheet:
-
BAL-WILC10-01D3.pdf
- Description:
- BALUN 2.4GHZ-2.5GHZ 50/50 OHM
- Quantity:
- Payment:
- Shipping:
Inventory:1,612
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Product details
Overview
BAL-WILC10-01D3 from STMicroelectronics is an ultra-miniature 2.45 GHz differential balun with integrated matching network, optimized for the ATMEL WILC1000 Wireless Link Controller. It provides 50 Ω single-ended input impedance and conjugate match to WILC1000's differential port, delivers 0.8 dB typical insertion loss, ±0.9 dB amplitude imbalance, and ±1.3° phase imbalance across 2400–2500 MHz.
For engineers reviewing the BAL-WILC10-01D3 datasheet, BAL-WILC10-01D3 pinout, BAL-WILC10-01D3 application, or BAL-WILC10-01D3 equivalent, key selection criteria include RF matching fidelity to WILC1000, footprint-constrained PCB integration, ESD robustness (2000 V HBM), thermal operation up to +105°C, and flip-chip manufacturability on non-conductive glass substrate.
Technical Context
This balun implements a passive transformer-based architecture using ST's IPD (Integrated Passive Device) technology on glass, enabling high-Q, low-loss RF performance without magnetic cores or discrete matching components. Its 4-bump flip-chip construction places IN, DIFF1, DIFF2, and GND terminals directly on a 0.95 × 0.95 mm CSPG die.
The device operates as a fixed-ratio, broadband impedance converter: 50 Ω single-ended input to WILC1000's differential port (conjugate matched), with harmonic suppression (−3.8 dB H2, −23 dB H3) and return loss >15 dB (SE and diff) across the 2.4–2.5 GHz ISM band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 2400–2500 MHz - Full ISM band coverage for Wi-Fi 802.11b/g/n 2.4 GHz operation |
| Insertion Loss | 0.65–0.8 dB typ - Minimizes RF path loss between transceiver and antenna interface |
| Amplitude Imbalance | ±0.9 dB max - Ensures balanced I/Q signal integrity critical for WLAN modulation accuracy |
| Phase Imbalance | ±1.3° max - Maintains orthogonal signal timing required for OFDM symbol decoding |
| ESD Rating (HBM) | 2000 V - Enables robust handling during SMT assembly and end-equipment operation |
| Operating Temp | −40°C to +105°C - Supports industrial-grade wireless modules in thermally demanding environments |
| Input Impedance | 50 Ω - Directly interfaces standard RF trace routing and SMA test fixtures |
Pinout & Package
Package: WLCSP (Wafer-Level Chip Scale Package) on glass, 4-bump flip-chip, 0.95 × 0.95 mm, 223 µm die thickness, ECOPACK-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Single-ended RF input | Accepts 50 Ω matched signal from WILC1000 RF output stage |
| DIFF1 | Differential output terminal 1 | Drives one leg of WILC1000's differential antenna interface (balanced mode) |
| DIFF2 | Differential output terminal 2 | Drives complementary leg; polarity inverted relative to DIFF1 for true differential signaling |
| GND | RF ground reference | Provides low-inductance return path; must be connected to solid ground plane under package |
Key Features
| Feature | Design Value |
|---|---|
| Integrated matching network | Eliminates need for external L/C matching components, reducing BOM count by ≥4 parts |
| Coated flip-chip on glass | Enables stable RF performance over temperature and humidity vs. organic substrates |
| Footprint < 0.90 mm² | Fits within tight space constraints of compact IoT modules and wearables |
| Conjugate match to WILC1000 | Guarantees optimal power transfer and minimal reflection at the transceiver's differential port |
| High harmonic rejection | −23 dB third-harmonic suppression reduces out-of-band emissions compliance risk |
Applications
| Wi-Fi 2.4 GHz IoT Sensor Node | Industrial Wireless Gateway |
|---|---|
Use Scenario: Compact battery-powered environmental sensor transmitting data via 802.11n to local AP. IC Role / Device Role / Timing Role: RF balun providing impedance transformation and common-mode rejection between WILC1000 and PCB antenna. Use Value: Enables sub-1 mm² RF front-end area while maintaining >15 dB return loss and <0.8 dB insertion loss at 2.45 GHz. | Use Scenario: DIN-rail mounted gateway aggregating Modbus RTU data over Wi-Fi to cloud platform. IC Role / Device Role / Timing Role: Differential interface component ensuring clean RF signal integrity in electrically noisy factory environments. Use Value: Delivers 2000 V HBM ESD tolerance and −40°C to +105°C operation for reliable field deployment. |
| Smart Home Hub | Medical Wearable Transmitter |
Use Scenario: Multi-protocol hub supporting concurrent BLE and Wi-Fi 2.4 GHz connectivity. IC Role / Device Role / Timing Role: Dedicated balun isolating WILC1000's RF output from shared PCB layers to prevent coupling into BLE/USB traces. Use Value: Achieves −17 dB differential return loss, minimizing cross-talk and improving coexistence performance. | Use Scenario: Patch-style ECG transmitter streaming real-time biometric data via Wi-Fi. IC Role / Device Role / Timing Role: Miniaturized RF interface enabling ultra-thin form factor without sacrificing RF efficiency. Use Value: 0.95 × 0.95 mm footprint and 223 µm profile allow integration beneath flexible antenna layers in <3 mm total stack-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar balun applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SKY13370-374LF | Surface-mount 2.4–2.5 GHz balun; 1.2 mm × 1.2 mm, 1.0 dB IL, no integrated WILC1000-specific matching | Requires external matching network for WILC1000; higher board area and tuning effort | Preferred when multi-transceiver reuse or legacy layout compatibility is required |
| TCB-2450-2500W+ | 0805-size ceramic balun; 2.45 GHz center, 1.1 dB IL, 50 Ω SE to 100 Ω diff, no conjugate match | Needs series/shunt compensation for WILC1000; limited harmonic rejection (−15 dB H3) | Used where cost sensitivity outweighs RF optimization and miniaturization goals |
Compared with SKY13370-374LF and TCB-2450-2500W+, BAL-WILC10-01D3 uniquely delivers pre-validated conjugate matching, 0.95 mm² footprint, and −23 dB third-harmonic suppression-reducing design validation time and enabling first-pass RF compliance in space-constrained WILC1000 designs.
Availability
BAL-WILC10-01D3 is available at Aetrix Electronics and suitable for Wi-Fi 2.4 GHz IoT sensor nodes, industrial wireless gateways, and medical wearable transmitters requiring stable component supply, full lifecycle support, and traceable sourcing.
Supply support for BAL-WILC10-01D3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader delivering intelligent power, sensing, and connectivity solutions for automotive, industrial, and consumer applications.
BAL-WILC10-01D3 belongs to ST's IPD (Integrated Passive Device) portfolio, designed specifically to replace discrete RF matching networks in ultra-compact wireless SoC interfaces like WILC1000.
FAQ
Is BAL-WILC10-01D3 pin-compatible with other ST baluns such as BAL-F0203N2D3?
No. BAL-WILC10-01D3 uses a 4-bump WLCSP layout (IN, DIFF1, DIFF2, GND) optimized for WILC1000, whereas BAL-F0203N2D3 is a 6-pin QFN with different pin assignment and impedance targets. Footprint, solder mask definition, and thermal pad configuration are not interchangeable.
Does this balun require external DC blocking capacitors?
No. BAL-WILC10-01D3 is fully AC-coupled internally; its transformer structure inherently blocks DC. No external DC blocking capacitors are needed on IN, DIFF1, or DIFF2 paths when used per the recommended PCB layout in DS12060.
Can BAL-WILC10-01D3 be used with non-WILC1000 transceivers like ESP32 or RTL8720DN?
It is not recommended. The device's conjugate match is specifically tuned to WILC1000's differential port impedance and S-parameters. Using it with other transceivers may result in >10 dB return loss degradation and increased EVM due to mismatch-induced reflections.
What is the recommended reflow profile for BAL-WILC10-01D3?
ST specifies JEDEC J-STD-020D-compliant reflow: peak temperature 260°C (max), time above liquidus 60–90 seconds, ramp-up rate ≤3°C/s. Due to its glass substrate and flip-chip bumps, avoid mechanical stress during depaneling and conformal coating processes.
BAL-WILC10-01D3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 4-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Frequency Range:
- 2.4GHz ~ 2.5GHz
- Impedance - Unbalanced/Balanced:
- 50 / 50Ohm
- Phase Difference:
- -
- Insertion Loss (Max):
- 0.65dB
- Return Loss (Min):
- -17dB
- Mounting Type:
- Surface Mount
BAL-WILC10-01D3 FAQ
1.How can I place an order for BAL-WILC10-01D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAL-WILC10-01D3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BAL-WILC10-01D3 reliable?
The price and inventory of BAL-WILC10-01D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAL-WILC10-01D3 is usually 5 days.
3.What payment methods are accepted for BAL-WILC10-01D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAL-WILC10-01D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAL-WILC10-01D3?
BAL-WILC10-01D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAL-WILC10-01D3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BAL-WILC10-01D3?
For technical support, including BAL-WILC10-01D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAL-WILC10-01D3 requirements.
6.How does Aetrix verify that BAL-WILC10-01D3 is sourced from the original manufacturer or authorized distributors?
All BAL-WILC10-01D3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BAL-WILC10-01D3 meets industry standards.
7.What is the process for return or replacement of BAL-WILC10-01D3?
All BAL-WILC10-01D3 units undergo pre-shipment inspection (PSI). If there is an issue with BAL-WILC10-01D3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BAL-WILC10-01D3 part is unused and in its original packaging.
Return procedure for BAL-WILC10-01D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAL-WILC10-01D3 Tags
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2450BL15B0100001E
Johanson Technology Inc.
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0900BL15D0050001E
Johanson Technology Inc.
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0900PC16J0042001E
Johanson Technology Inc.
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2450BM15A0002001E
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2450BM14G0011001T
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BD0810N50100AHF
TTM Technologies, Inc.
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1720BL15B0050001E
Johanson Technology Inc.
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0900PC15A0036001E
Johanson Technology Inc.
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0868BM15C0001001E
Johanson Technology Inc.
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0915BM15A0001001E
Johanson Technology Inc.
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HHM1776B3
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2450BM14E0003001T
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