My Inquiry
My Account
Alpha & Omega Semiconductor Inc. AOZ8S204BLS-03
- Part No.:
- AOZ8S204BLS-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S204BLS-03.pdf
- Description:
- TVS BIDIR 3.3V 1.2PF WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AOZ8S204BLS-03 from Alpha & Omega Semiconductor is a single-channel bidirectional TVS diode designed for ESD and transient protection of high-speed data lines including USB4, Thunderbolt 4, and PCIe. It features 0.15 pF junction capacitance, ±20 kV IEC 61000-4-2 contact/air discharge rating, 3.3 V reverse working voltage, 5.8 V clamping voltage at 8.5 A surge, and WLCSP 0.6×0.3 mm package.
For engineers reviewing the AOZ8S204BLS-03 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 footprint, and validated performance up to 20 Gbps (Thunderbolt 3.0 eye diagram).
Technical Context
The AOZ8S204BLS-03 implements a silicon avalanche diode structure optimized for low-capacitance bidirectional clamping. Its TLP-tested dynamic resistance of 0.2 Ω enables fast response to sub-nanosecond transients while maintaining <5.8 V clamping at 8.5 A (IEC 61000-4-5 8/20 µs).
Designed for placement directly at high-speed connector inputs, it operates across –40°C to +125°C ambient with <50 nA leakage at 3.3 V VRWM and supports signal integrity up to 20 Gbps as verified by Thunderbolt 3.0 eye diagrams and <–0.5 dB insertion loss below 10 GHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 3.3 V - Sets maximum continuous DC bias before leakage rises; matches USB/PCIe rail levels. |
| Junction Capacitance | 0.15 pF - Minimizes signal distortion on >10 Gbps differential lines (e.g., Thunderbolt 4). |
| Clamping Voltage (8.5 A) | 5.8 V - Limits peak transient voltage to protect 3.3 V I/O cells during lightning-surge events. |
| ESD Rating (IEC 61000-4-2) | ±20 kV contact/air - Meets industrial-grade ESD immunity without external shielding. |
| Peak Pulse Current | 8.5 A (8/20 µs) - Withstands IEC 61000-4-5 Level 3 surge events in portable electronics. |
| Package | WLCSP 0.6×0.3 mm - Enables placement within 1 mm of USB-C/PCIe connectors to reduce loop inductance. |
Pinout & Package
WLCSP 0.6 mm × 0.3 mm, 2-terminal chip-scale package with solder bumps; no internal die pad or auxiliary terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (bidirectional) | Shared terminal for symmetrical clamping; connects to protected signal line (e.g., USB4 TX+/RX+). |
| 2 | Anode/Cathode (bidirectional) | Shared terminal completing bidirectional path; ties to ground plane via shortest possible trace. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled differential pairs (e.g., USB4, PCIe Gen4) without polarity constraints. |
| 0.15 pF capacitance | Preserves 20 Gbps signal integrity with <–0.5 dB insertion loss up to 10 GHz per S21 measurement. |
| ±20 kV ESD rating | Eliminates need for secondary ESD protection stages in mobile phone front-end designs. |
| 5.8 V clamping at 8.5 A | Ensures downstream 3.3 V transceivers remain within absolute maximum ratings during surge events. |
Applications
| USB4 Interface Protection | Thunderbolt 4 Host Port |
|---|---|
Use Scenario: Protecting differential TX/RX lanes of USB4 Type-C ports against ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS placed immediately adjacent to connector to clamp transients before reaching controller PHY. Use Value: 0.15 pF capacitance prevents eye diagram degradation at 40 Gbps aggregate bandwidth. | Use Scenario: Safeguarding Thunderbolt 4 host controller I/O pins in ultrabooks exposed to frequent hot-plug cycles. IC Role / Device Role / Timing Role: Low-clamp-voltage suppressor absorbing ±20 kV contact ESD pulses without latch-up. Use Value: 5.8 V clamping ensures Intel JHL8540-compliant PHYs operate within safe voltage margins. |
| PCIe Gen4 Add-in Card | Mobile Phone High-Speed MIPI D-PHY |
Use Scenario: Transient suppression on PCIe Gen4 x4 edge connector pins in industrial GPU-accelerated modules. IC Role / Device Role / Timing Role: Surge-rated TVS limiting IEC 61000-4-5 8/20 µs spikes to <6 V at 8.5 A peak current. Use Value: 8.5 A IPP rating exceeds PCIe CEM 5.0 surge test requirement (4 A). | Use Scenario: ESD hardening of MIPI D-PHY camera interface traces in compact smartphone PCBs. IC Role / Device Role / Timing Role: Ultra-small WLCSP device mounted within 0.5 mm of image sensor flex connector. Use Value: 0.6×0.3 mm footprint saves >0.1 mm² vs. 0402 alternatives, critical for aperture-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Unidirectional; 3.3 V VRWM; 100 pF capacitance; DO-214AC package (4.5×2.7 mm) | Requires polarity-aware layout; unsuitable for AC-coupled differential lines due to unidirectionality and high capacitance. | Select only for low-speed DC-biased rails where size and signal integrity are non-critical. |
| TPD4E05U06DQAR | Bidirectional; 3.6 V VRWM; 0.5 pF capacitance; 1.5×1.0 mm X2SON package | Larger footprint increases parasitic inductance; 0.5 pF limits use to ≤5 Gbps interfaces (e.g., USB 3.2 Gen1). | Prefer when board space allows larger package and target data rate is ≤5 Gbps. |
Compared with SMAJ3.3A and TPD4E05U06DQAR, the AOZ8S204BLS-03 uniquely combines bidirectionality, 0.15 pF capacitance, and 0.6×0.3 mm WLCSP to support 20+ Gbps interfaces in space-constrained mobile and computing platforms.
Availability
AOZ8S204BLS-03 is available at Aetrix Electronics and suitable for USB4 interface protection, Thunderbolt 4 host port hardening, and PCIe Gen4 add-in card surge mitigation requiring stable component supply across automotive infotainment, industrial embedded, and consumer electronics programs.
Supply support for AOZ8S204BLS-03 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 is a fabless power semiconductor company specializing in MOSFETs, TVS diodes, and power ICs for high-efficiency, high-reliability applications.
The AOZ8S204BLS-03 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically for ESD and surge protection of next-generation high-speed serial interfaces without compromising signal fidelity.
FAQ
What is the clamping voltage of AOZ8S204BLS-03 at 8.5 A surge current?
The AOZ8S204BLS-03 exhibits a clamping voltage of 5.8 V under IEC 61000-4-5 8/20 µs surge conditions at 8.5 A peak pulse current. This value is measured per standard test methodology and ensures protected 3.3 V I/O circuits remain within safe operating limits during lightning-surge events. The AOZ8S204BLS-03 maintains this performance across its full –40°C to +125°C operating range.
Is AOZ8S204BLS-03 suitable for USB4 Gen 3 (40 Gbps) applications?
Yes, AOZ8S204BLS-03 is validated for USB4 Gen 3 applications. Its 0.15 pF junction capacitance and <–0.5 dB insertion loss up to 10 GHz preserve signal integrity on 20 Gbps differential lanes. The AOZ8S204BLS-03 has demonstrated clean eye diagrams in USB3.2 Gen2 (10 Gbps), HDMI2.1 (12 Gbps), and Thunderbolt 3.0 (20 Gbps) testing, confirming suitability for 40 Gbps aggregate USB4 links.
Does AOZ8S204BLS-03 require orientation-specific placement on PCB?
No, AOZ8S204BLS-03 is a bidirectional TVS diode and has no polarity marking or orientation requirement. Both terminals are functionally identical, enabling symmetric placement on differential signal pairs like USB4 TX+/TX– or PCIe RX+/RX–. This eliminates assembly errors and simplifies layout for high-speed AC-coupled interfaces.
What is the maximum operating temperature range for AOZ8S204BLS-03?
The AOZ8S204BLS-03 is rated for continuous operation from –40°C to +125°C ambient temperature. This extended range supports deployment in automotive infotainment systems, industrial edge controllers, and mobile devices exposed to high thermal stress. The AOZ8S204BLS-03 maintains specified clamping voltage, leakage current, and ESD performance across this full range.
How does AOZ8S204BLS-03 compare to standard 0402 TVS diodes in high-speed designs?
Compared to standard 0402 TVS diodes (e.g., 1.0×0.5 mm), AOZ8S204BLS-03 reduces package size by >90% (0.6×0.3 mm WLCSP) and cuts typical junction capacitance from 0.5–1.0 pF to 0.15 pF. This minimizes trace stub inductance and signal reflection, making AOZ8S204BLS-03 essential for preserving eye opening above 10 Gbps-where conventional 0402 parts induce measurable jitter and loss.
AOZ8S204BLS-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 5.8V (Typ)
- Current - Peak Pulse (10/1000µs):
- 8.5A (8/20µs)
- Power - Peak Pulse:
- 50W
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 0.15pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-WLCSP (0.6x0.3)
AOZ8S204BLS-03 FAQ
1.How can I place an order for AOZ8S204BLS-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S204BLS-03 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-03 reliable?
The price and inventory of AOZ8S204BLS-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S204BLS-03 is usually 5 days.
3.What payment methods are accepted for AOZ8S204BLS-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S204BLS-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S204BLS-03?
AOZ8S204BLS-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S204BLS-03 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-03?
For technical support, including AOZ8S204BLS-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S204BLS-03 requirements.
6.How does Aetrix verify that AOZ8S204BLS-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8S204BLS-03 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-03 meets industry standards.
7.What is the process for return or replacement of AOZ8S204BLS-03?
All AOZ8S204BLS-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S204BLS-03, 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-03 part is unused and in its original packaging.
Return procedure for AOZ8S204BLS-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8S204BLS-03 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
