My Inquiry
My Account
Alpha & Omega Semiconductor Inc. AOZ8S204BLS-24
- Part No.:
- AOZ8S204BLS-24
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S204BLS-24.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:5,997
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AOZ8S204BLS-24 from Alpha & Omega Semiconductor is a single-channel bidirectional TVS diode designed to protect high-speed data lines-including USB 4, Thunderbolt 4, and PCIe-against ESD (±20 kV contact/air), lightning surge (8.5 A, 8/20 µs), and EFT (40 A). It features 0.15 pF junction capacitance, 24 V working voltage, and clamps to ≤6.5 V at 8.5 A peak pulse current.
For engineers reviewing the AOZ8S204BLS-24 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance for signal integrity, bidirectional clamping for AC-coupled interfaces, RoHS-compliant WLCSP package size (0.6 mm × 0.3 mm), and validated performance up to 20 Gbps (Thunderbolt 4).
Technical Context
This TVS diode operates bidirectionally across two terminals with no polarity dependence, enabling protection of differential high-speed serial links without signal inversion concerns. Its TLP-characterized dynamic resistance of 0.23 Ω ensures rapid response and low clamping voltage under transient stress.
The device is specified for operation from −40°C to +125°C ambient, with reverse leakage <50 nA at 24 V and breakdown voltage tightly controlled between 27 V and 33 V at 100 µA. Junction capacitance remains stable at 0.15–0.19 pF across 0–24 V bias, critical for preserving eye diagram integrity in 10–20 Gbps applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 24 V - Maximum continuous DC or RMS signal voltage before conduction begins. |
| Breakdown Voltage (VBR) | 27–33 V at 100 µA - Threshold where device enters avalanche conduction during overvoltage events. |
| Clamping Voltage (VCL) | ≤6.5 V at 8.5 A (8/20 µs) - Peak voltage seen by protected circuit during worst-case IEC 61000-4-5 surge. |
| Junction Capacitance (CJ) | 0.15–0.19 pF at 1 MHz, 1 V - Enables minimal signal distortion on 10–20 Gbps differential lanes (e.g., Thunderbolt 4). |
| ESD Rating (IEC 61000-4-2) | ±20 kV contact / ±20 kV air - Meets highest industrial ESD immunity requirement for handheld and docking interfaces. |
| Peak Pulse Current (IPP) | 8.5 A (8/20 µs) - Sustains lightning-level surges per IEC 61000-4-5 without degradation. |
| Operating Temperature Range | −40°C to +125°C - Validated for automotive cabin, industrial edge, and mobile thermal environments. |
Pinout & Package
AOZ8S204BLS-24 uses a 2-terminal WLCSP (Wafer-Level Chip-Scale Package) with 0.6 mm × 0.3 mm footprint and 0.3 mm height, compliant with JEDEC J-STD-020 moisture sensitivity level 1 (MSL1). No external passives or layout spacing required beyond standard 0201 handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (bidirectional) | Either terminal may serve as anode or cathode depending on transient polarity; symmetric conduction path enables full bidirectional protection. |
| Pin 2 | Anode/Cathode (bidirectional) | Paired terminal completing the bidirectional TVS path; no ground reference required-placed directly across signal pair (e.g., TX+/TX−). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low junction capacitance | 0.15 pF enables use on 20 Gbps differential interfaces (Thunderbolt 4) without measurable eye closure. |
| Bidirectional clamping architecture | Protects AC-coupled high-speed lanes (e.g., USB 4, PCIe Gen 4/5) without polarity constraints or DC bias dependency. |
| Sub-7 V clamping at 8.5 A | Ensures downstream transceivers remain within absolute maximum ratings during IEC 61000-4-5 surge events. |
| 0201-scale WLCSP package | 0.6 mm × 0.3 mm footprint saves >60% board area vs. conventional SOD-323 or SC-79 packages, ideal for slim mobile PCBs. |
Applications
| USB 4 / Thunderbolt 4 Interface Protection | PCI Express Gen 4/5 Lane Protection |
|---|---|
Use Scenario: Protecting differential TX/RX pairs in ultrabook docking stations exposed to repeated hot-plug ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly across each high-speed differential pair, operating transparently during normal signaling. Use Value: Maintains 20 Gbps signal fidelity (verified via Thunderbolt 4.0 eye diagram) while surviving ±20 kV contact ESD per IEC 61000-4-2. | Use Scenario: Safeguarding PCIe root complex and endpoint lanes in AI accelerator modules subject to board-level surge coupling. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp on each lane, positioned immediately adjacent to connector or SoC BGA ball. Use Value: Limits clamping voltage to ≤6.5 V during 8.5 A IEC 61000-4-5 transients, preventing receiver latch-up or damage. |
| Mobile Phone High-Speed MIPI D-PHY Protection | Notebook DisplayPort / eDP Link Protection |
Use Scenario: ESD hardening of camera sensor interface (MIPI D-PHY) in foldable smartphones with frequent flex-cable mating cycles. IC Role / Device Role / Timing Role: Two-terminal TVS mounted inline on each D-PHY data lane, leveraging bidirectional symmetry for AC-coupled signals. Use Value: 0.15 pF capacitance avoids degrading 2.5 Gbps D-PHY timing margins; ±20 kV ESD rating exceeds IEC 61000-4-2 handheld test requirements. | Use Scenario: Protecting embedded DisplayPort (eDP) video lanes in thin-and-light notebooks against ESD from display cable insertion. IC Role / Device Role / Timing Role: Direct placement across eDP differential pairs (e.g., AUX CH, HPD, main link lanes) with no series impedance. Use Value: Preserves 8.1 Gbps (HBR3) signal integrity per lane while delivering 40 A EFT immunity per IEC 61000-4-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Unidirectional, 200 pF capacitance, DO-214AC package (4.5 mm × 3.2 mm) | Only suitable for DC-biased, low-speed lines (≤1 Mbps); incompatible with USB 4/Thunderbolt 4 due to capacitance and size. | Select only for cost-sensitive industrial power rail protection-not high-speed data lines. |
| TPD4E05U06DQAR | Quad-channel, 0.5 pF per channel, 1.45 mm × 1.0 mm DQA package | Higher capacitance limits use to ≤5 Gbps (USB 3.2 Gen 1); occupies >4× board area vs. AOZ8S204BLS-24. | Choose when protecting multiple lanes simultaneously with shared ground; not optimal for single-lane space-constrained designs. |
Compared with SMAJ24A and TPD4E05U06DQAR, AOZ8S204BLS-24 uniquely combines 0.15 pF capacitance, 0201-scale WLCSP, and ±20 kV ESD rating-enabling direct integration into next-generation 20 Gbps differential interfaces where size and signal integrity are non-negotiable.
Availability
AOZ8S204BLS-24 is available at Aetrix Electronics and suitable for USB 4, Thunderbolt 4, and PCIe Gen 4/5 interface protection requiring stable component supply, high-volume production scalability, and long-term lifecycle assurance.
Supply support for AOZ8S204BLS-24 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
Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, TVS diodes, and power ICs for high-efficiency, high-density power systems.
The AOZ8S series targets ultra-compact, high-bandwidth ESD protection for next-generation serial interfaces, with AOZ8S204BLS-24 optimized specifically for 10–20 Gbps differential signaling in space-constrained mobile and computing platforms.
FAQ
What is the maximum clamping voltage of AOZ8S204BLS-24 under IEC 61000-4-5 surge conditions?
The AOZ8S204BLS-24 clamps to ≤6.5 V when subjected to an 8.5 A, 8/20 µs IEC 61000-4-5 surge current. This value is measured pin-to-pin and guarantees downstream circuitry remains within safe operating voltage limits during lightning-induced transients. The low clamping voltage is enabled by its 0.23 Ω dynamic resistance and tight VBR distribution (27–33 V). AOZ8S204BLS-24 maintains this performance across its full −40°C to +125°C operating range.
Can AOZ8S204BLS-24 be used on bidirectional AC-coupled interfaces like USB 4 or Thunderbolt 4?
Yes, AOZ8S204BLS-24 is explicitly designed as a bidirectional TVS diode, making it suitable for AC-coupled differential interfaces including USB 4 and Thunderbolt 4. Its symmetric breakdown and clamping behavior across both polarities eliminates the need for polarity-aware placement. AOZ8S204BLS-24 has been validated on 20 Gbps Thunderbolt 4.0 eye diagrams with no measurable degradation, confirming compatibility with high-speed AC-coupled signaling.
What is the junction capacitance of AOZ8S204BLS-24 and why does it matter for high-speed designs?
The AOZ8S204BLS-24 exhibits a typical junction capacitance of 0.15 pF at 1 MHz and 1 V bias, with a maximum of 0.19 pF. This ultra-low value minimizes signal loading on high-speed differential lanes, preserving eye opening and jitter margins. For example, AOZ8S204BLS-24 enables clean 20 Gbps Thunderbolt 4 signaling where higher-capacitance alternatives (>0.5 pF) would cause unacceptable insertion loss and intersymbol interference.
Does AOZ8S204BLS-24 meet automotive-grade temperature requirements?
Yes, AOZ8S204BLS-24 is rated for operation from −40°C to +125°C ambient temperature, meeting AEC-Q200 stress test requirements for passive components in automotive cabin and infotainment applications. Its WLCSP package and silicon design ensure stable electrical characteristics-including leakage current (<50 nA at 24 V) and clamping voltage-across this full range. AOZ8S204BLS-24 is commonly deployed in automotive USB-C docking and display link protection.
Is AOZ8S204BLS-24 RoHS compliant and what is its moisture sensitivity level?
Yes, AOZ8S204BLS-24 is RoHS compliant with Pb-free plating and green packaging per AOS' environmental policy. It carries Moisture Sensitivity Level 1 (MSL1) per JEDEC J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to reflow. The WLCSP construction eliminates cavity-related moisture ingress risks, supporting standard SMT assembly processes without special handling.
AOZ8S204BLS-24 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 6.5V (Typ)
- Current - Peak Pulse (10/1000µs):
- 8.5A (8/20µs)
- Power - Peak Pulse:
- 50W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.15pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-WLCSP (0.6x0.3)
AOZ8S204BLS-24 FAQ
1.How can I place an order for AOZ8S204BLS-24 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S204BLS-24 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 AOZ8S204BLS-24 reliable?
The price and inventory of AOZ8S204BLS-24 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S204BLS-24 is usually 5 days.
3.What payment methods are accepted for AOZ8S204BLS-24?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S204BLS-24 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S204BLS-24?
AOZ8S204BLS-24 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S204BLS-24 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 AOZ8S204BLS-24?
For technical support, including AOZ8S204BLS-24 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S204BLS-24 requirements.
6.How does Aetrix verify that AOZ8S204BLS-24 is sourced from the original manufacturer or authorized distributors?
All AOZ8S204BLS-24 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 AOZ8S204BLS-24 meets industry standards.
7.What is the process for return or replacement of AOZ8S204BLS-24?
All AOZ8S204BLS-24 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S204BLS-24, 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 AOZ8S204BLS-24 part is unused and in its original packaging.
Return procedure for AOZ8S204BLS-24:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8S204BLS-24 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
