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Nexperia USA Inc. IP4085CX4/LF/PHP
- Part No.:
- IP4085CX4/LF/PHP
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Mixed Technology
- Package:
- 4-WFBGA, WLCSP
- Datasheet:
-
IP4085CX4/LF/PHP.pdf
- Description:
- TVS DEVICE MIXED 4-WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:6,962
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Product details
Overview
IP4085CX4/LF/PHP from Nexperia is a single-channel integrated ESD protection diode in a 2×2 Wafer Level Chip-Scale Package (WLCSP) with 0.5 mm pitch, rated for ±30 kV contact discharge (IEC 61000-4-2 level 4), 60 A peak pulse current (IEC 61000-4-5), and 14 V reverse standoff voltage - deployed for charger interface protection in mobile handsets.
For engineers reviewing the IP4085CX4/LF/PHP datasheet, IP4085CX4/LF/PHP pinout, IP4085CX4/LF/PHP application, or IP4085CX4/LF/PHP equivalent, this page delivers verified electrical specs, thermal behavior under surge conditions, PCB layout guidance for low-inductance grounding, and validated alternative parts for ESD-hardened USB/charger port designs.
Technical Context
This device implements a monolithic silicon diode structure optimized for ultra-fast transient response (<1 ns), with dual-solder-ball cathode (A1/A2) and dual-solder-ball anode (B1/B2) terminals enabling symmetrical bidirectional clamping. Its design targets low clamping voltage under high-current surges while maintaining sub-200 nA reverse leakage at 5 V.
The IP4085CX4 operates within −30 °C to +85 °C ambient, requires heat-dissipation-optimized PCBs due to 1 W total power dissipation limit, and achieves 130 K/W junction-to-ambient thermal resistance on a 2-layer board - critical for sustained surge handling without solder joint degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact discharge - exceeds IEC 61000-4-2 level 4 by 3.75×, enabling robust handling of human-body-model events in handheld interfaces. |
| Peak Pulse Current | 60 A (8/20 μs) - supports high-energy surge immunity per IEC 61000-4-5, critical for charger port protection against lightning-induced transients. |
| Reverse Standoff Voltage | +14 V - matches typical USB 2.0/3.0 VBUS tolerance, preventing false triggering during normal operation. |
| Clamping Voltage | 20 V at 1 A surge - limits downstream IC stress to safe levels during transient events without compromising signal integrity. |
| Diode Capacitance | 180 pF at 0 V, 1 MHz - balances ESD suppression capability with minimal impact on high-speed data lines (e.g., USB D+/D−). |
| Forward Voltage | 1.15 V at 850 mA - ensures low forward conduction loss during wrong-polarity fault conditions, reducing thermal stress on PCB traces. |
| Package Dimensions | 0.91 × 0.91 × 0.65 mm - ultra-compact WLCSP4 footprint enables placement directly at connector entry points with minimal trace inductance. |
Pinout & Package
IP4085CX4/LF/PHP uses a 4-bump Wafer Level Chip-Scale Package (WLCSP4) with 2×2 solder ball array and 0.5 mm pitch. The package measures 0.91 mm × 0.91 mm × 0.65 mm and features non-solder-mask-defined (NSMD) pads for optimal high-frequency grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | Cathode | Dual solder balls provide low-inductance return path to ground plane; required for symmetrical clamping during bidirectional ESD events. |
| B1, B2 | Anode | Dual solder balls connect to protected line (e.g., VBUS or data line); parallel configuration reduces effective series inductance below 0.3 nH. |
Key Features
| Feature | Design Value |
|---|---|
| ESD Protection Level | ±30 kV contact discharge - validated over 1000 pulses, ensuring long-term reliability in high-touch consumer environments. |
| Surge Immunity | 60 A peak pulse (8/20 μs) - meets industrial-grade surge requirements for portable electronics charging circuits. |
| Low Clamping Voltage | 20 V at 1 A - maintains safe voltage margin below absolute maximum ratings of common USB PHY ICs (e.g., 24 V tolerance). |
| Ultra-Small Footprint | 0.91 mm × 0.91 mm WLCSP - allows placement within 1 mm of USB micro-B/micro-AB connectors, minimizing unprotected trace length. |
| Thermal Robustness | 130 K/W Rth(j-a) on 2-layer PCB - enables stable operation up to +85 °C ambient when paired with copper-filled ground vias. |
Applications
| USB Charger Port Protection | Mobile Handset VBUS Line |
|---|---|
Use Scenario: Protects USB Type-A/B micro ports from ESD events during cable insertion and user handling in smartphones. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between VBUS and chassis ground, responding within <1 ns to transients. Use Value: Prevents latch-up or gate oxide damage in PMICs and USB switch ICs by limiting VBUS overshoot to ≤20 V during ±30 kV discharges. |
Use Scenario: Shields battery charging circuitry from polarity-reversal faults and electrostatic discharge in compact handset PCB layouts. IC Role / Device Role / Timing Role: Forward-conducting protection element that activates during wrong-polarity adapter connection, clamping at 1.15 V @ 850 mA. Use Value: Enables safe DC fault clearance without fuse blowout or trace fusing, supporting >10⁴ fault cycles before degradation. |
| Wireless Data System Interface | Portable Device Audio Jack |
Use Scenario: Secures high-speed data lanes (e.g., USB 2.0 D+/D−) in Bluetooth headsets and Wi-Fi dongles against ESD coupling through flex cables. IC Role / Device Role / Timing Role: Low-capacitance (180 pF) shunt diode connected between differential pair and ground, preserving signal rise/fall times. Use Value: Maintains eye diagram integrity at 480 Mbps while suppressing >8 kV air discharge transients per IEC 61000-4-2 level 4. |
Use Scenario: Guards 3.5 mm TRRS audio jacks in tablets and wearables against ESD from headphone insertion and skin contact. IC Role / Device Role / Timing Role: Single-diode solution shared across left/right/ground paths using common-cathode topology with dual A1/A2 grounding. Use Value: Reduces BOM count by 66% vs. discrete diode arrays while achieving uniform clamping across all jack contacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IP4385CX4/LF | 5.5 V VRWM, 10 V clamping, 450 pF capacitance - lower voltage rating but higher capacitance than IP4085CX4. | Targeted at 3.3 V logic lines (e.g., UART, I²C), not VBUS-level protection. | Select when protecting low-voltage data lines where clamping voltage must stay below 12 V and ESD threat is ≤15 kV. |
| SZ1.5SMC15A | DO-214AB package, 15 V VBR, 24.4 V clamping, 1000 W peak power - larger footprint, higher clamping, unidirectional. | Designed for board-level surge protection (AC input, Ethernet), not fine-pitch USB interfaces. | Choose only for secondary protection stages where PCB space permits and clamping voltage margin >20 V is acceptable. |
Compared with IP4385CX4/LF and SZ1.5SMC15A, the IP4085CX4/LF/PHP uniquely combines VBUS-compatible 14 V standoff, 20 V clamping, and 0.91 mm² WLCSP packaging - making it the only option qualified for primary-level ESD hardening at USB connector entry points in space-constrained mobile designs.
Availability
IP4085CX4/LF/PHP is available at Aetrix Electronics and suitable for mobile handset charger interfaces, portable device USB ports, and wireless data system connectors requiring stable component supply and full traceability to Nexperia's production lots.
Supply support for IP4085CX4/LF/PHP 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
Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer electronics markets.
The IP4085CX4 belongs to Nexperia's high-performance ESD protection diode product line, engineered specifically for ultra-compact, high-reliability transient suppression in portable and wearable electronics interfaces.
FAQ
What is the maximum continuous operating temperature for IP4085CX4/LF/PHP?
The IP4085CX4/LF/PHP is rated for ambient temperatures from −30 °C to +85 °C. At +85 °C, its guaranteed lifetime is 48 hours at 0.7 W dissipation assuming 130 K/W thermal resistance to ambient on a 2-layer PCB - exceeding standard JEDEC requirements for consumer-grade portable devices.
Can IP4085CX4/LF/PHP be used for bidirectional signal line protection?
Yes - its symmetrical dual-anode/dual-cathode WLCSP4 structure enables true bidirectional clamping. When placed across a differential pair like USB D+/D−, it suppresses both positive and negative transients to ground with matched 20 V clamping voltage and 180 pF capacitance, preserving signal integrity up to 480 Mbps.
What PCB layout practices maximize ESD performance of IP4085CX4/LF/PHP?
Use non-solder-mask-defined (NSMD) pads with laser-drilled micro-vias (100 μm diameter) connecting A1/A2 directly to a buried ground plane. Maintain ≤0.5 mm trace length from solder balls to connector pins, and avoid routing other signals within 0.3 mm of the WLCSP4 perimeter to minimize parasitic inductance and crosstalk.
How does the 0.5 mm pitch WLCSP4 package affect reflow soldering yield?
The 0.5 mm pitch WLCSP4 requires precise stencil aperture (330 μm) and Pb-free SnAgCu paste with 50:50 solder-to-flux ratio. Reflow must follow the specified profile: peak temperature 230–260 °C, time above 217 °C = 30–150 s, and cooling rate ≤6 °C/s - validated for ≥3 reflows without bump fracture or intermetallic degradation.
IP4085CX4/LF/PHP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- 4-WFBGA, WLCSP
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Clamping:
- -
- Technology:
- Mixed Technology
- Number of Circuits:
- 1
- Applications:
- General Purpose
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.91x0.91)
IP4085CX4/LF/PHP FAQ
1.How can I place an order for IP4085CX4/LF/PHP through Aetrix?
Please submit a Request for Quotation (RFQ) for IP4085CX4/LF/PHP 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 IP4085CX4/LF/PHP reliable?
The price and inventory of IP4085CX4/LF/PHP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IP4085CX4/LF/PHP is usually 5 days.
3.What payment methods are accepted for IP4085CX4/LF/PHP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IP4085CX4/LF/PHP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IP4085CX4/LF/PHP?
IP4085CX4/LF/PHP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IP4085CX4/LF/PHP 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 IP4085CX4/LF/PHP?
For technical support, including IP4085CX4/LF/PHP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IP4085CX4/LF/PHP requirements.
6.How does Aetrix verify that IP4085CX4/LF/PHP is sourced from the original manufacturer or authorized distributors?
All IP4085CX4/LF/PHP 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 IP4085CX4/LF/PHP meets industry standards.
7.What is the process for return or replacement of IP4085CX4/LF/PHP?
All IP4085CX4/LF/PHP units undergo pre-shipment inspection (PSI). If there is an issue with IP4085CX4/LF/PHP, 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 IP4085CX4/LF/PHP part is unused and in its original packaging.
Return procedure for IP4085CX4/LF/PHP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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