My Inquiry
My Account
Alpha & Omega Semiconductor Inc. AOZ8S205BL2-03
- Part No.:
- AOZ8S205BL2-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S205BL2-03.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:9,130
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AOZ8S205BL2-03 from Alpha and Omega Semiconductor is a dual-channel bidirectional TVS diode designed for ESD and transient protection of high-speed differential data lines including USB4, Thunderbolt 4, and PCIe. It features 0.075 pF typical junction capacitance, ±9 kV IEC 61000-4-2 contact/air discharge rating, 3.3 V reverse working voltage, 5.5 V peak pulse power rating (16 W), and operates across –40°C to +125°C ambient.
For engineers reviewing the AOZ8S205BL2-03 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance for signal integrity preservation, bidirectional clamping for full-duplex line protection, compact WLCSP0.63x0.33A-3 package footprint, and validated performance in 10–20 Gbps eye diagrams.
Technical Context
The AOZ8S205BL2-03 implements a symmetric bidirectional TVS structure with two independent channels sharing a common ground terminal (Pin 2), enabling simultaneous protection of differential pairs without polarity constraints. Its low dynamic resistance (0.9 Ω) and sub-3 V clamping at 1 A TLP ensure minimal voltage overshoot during fast transients.
Designed specifically for high-frequency interfaces, it maintains stable 0.075 pF capacitance up to 5 V bias and delivers <5.5 V clamping under 3 A IEC 61000-4-5 surge current-critical for preserving signal integrity on 10+ Gbps serial links such as USB4 and Thunderbolt 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance (CJ) | 0.075 pF @ 1 MHz, 0 V - preserves signal integrity on 10–20 Gbps differential links |
| Reverse Working Voltage (VRWM) | 3.3 V - matches standard I/O supply rails for USB/PCIe/TB4 receivers |
| Clamping Voltage (VCL) | 5.5 V @ 3 A (8/20 µs) - limits transient overvoltage below IC damage thresholds |
| ESD Rating (IEC 61000-4-2) | ±9 kV contact & air - exceeds industrial and consumer immunity requirements |
| Operating Temp Range | –40°C to +125°C - supports automotive cabin and industrial edge deployment |
| Package | WLCSP0.63×0.33A-3 - 0.63 mm × 0.33 mm footprint, 3-terminal chip-scale package |
Pinout & Package
AOZ8S205BL2-03 uses a 3-pin Wafer-Level Chip-Scale Package (WLCSP0.63×0.33A-3) with solder bumps. Pin 1 and Pin 3 serve as bidirectional I/O terminals for Channel 1 and Channel 2 respectively; Pin 2 is the common cathode/anode reference (GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (I/O1) | Differential input/output terminal, Channel 1 | Protects one side of a high-speed differential pair (e.g., TX+, RX+, D+, etc.) |
| Pin 2 (GND) | Common reference node | Shared ground return path for both TVS channels; must be low-inductance connection |
| Pin 3 (I/O3) | Differential input/output terminal, Channel 2 | Protects complementary side of same differential pair (e.g., TX–, RX–, D–, etc.) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping per channel | Enables single-device protection of full-duplex differential signals without polarity alignment |
| 0.075 pF junction capacitance | Minimizes insertion loss and phase distortion on >10 Gbps serial links |
| ±9 kV IEC 61000-4-2 ESD rating | Meets or exceeds end-equipment compliance requirements for handheld and docking systems |
| 3.3 V VRWM with 5.5 V VBR margin | Provides headroom against supply rail noise while avoiding false triggering |
| WLCSP0.63×0.33A-3 package | Reduces PCB area by >50% vs. 0402 discrete TVS; eliminates routing stubs |
Applications
| USB4 Interface Protection | Thunderbolt 4 Host Port |
|---|---|
Use Scenario: Protecting differential lanes in USB4 Type-C receptacles against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Bidirectional TVS suppressor placed directly at connector pins to clamp transients before reaching controller PHY. Use Value: 0.075 pF capacitance prevents eye diagram degradation at 40 Gbps aggregate bandwidth; ±9 kV ESD rating ensures reliability in user-facing ports. | Use Scenario: Safeguarding Thunderbolt 4 host-side SerDes lanes from lightning-induced surges and system-level EFT. IC Role / Device Role / Timing Role: Dual-channel transient suppressor deployed per differential pair (TX/RX) with shared ground reference. Use Value: 5.5 V clamping at 3 A (8/20 µs) limits voltage excursion below 6 V, protecting 3.3 V tolerant Thunderbolt PHY inputs. |
| PCIe Gen 4/5 Add-in Card Edge | Mobile SoC High-Speed I/O |
Use Scenario: ESD hardening of PCIe Gen 4/5 x16 edge connectors on GPU or accelerator cards. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to edge connector to absorb contact discharge before signal enters retimer/redriver. Use Value: Sub-3 V clamping at 1 A TLP prevents latch-up in PCIe 5.0 controllers; 0.63 mm × 0.33 mm footprint avoids trace detours. | Use Scenario: Protecting MIPI D-PHY and C-PHY lanes in smartphone application processors from HBM ESD. IC Role / Device Role / Timing Role: Dual-channel TVS integrated into fanout substrate near AP die to minimize parasitic inductance. Use Value: 0.075 pF capacitance enables >3.5 Gbps D-PHY operation; –40°C to +125°C rating supports battery thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J3.3A-Q | Unidirectional, 3.3 V VRWM, 0.5 pF capacitance, DO-214AC package | Not suitable for differential high-speed data; higher capacitance degrades >1 Gbps signals | Select only for DC-biased single-ended lines where speed is not critical |
| TPD4E05U06DQAR | Quad-channel, 0.5 pF per channel, 3.6 V VRWM, X2SON-6 package | Higher capacitance and larger footprint; lacks 3 A IEC 61000-4-5 rating | Acceptable for USB 2.0 or HDMI 1.4, but insufficient for USB4/Thunderbolt 4 signal fidelity |
Compared with SMA6J3.3A-Q and TPD4E05U06DQAR, the AOZ8S205BL2-03 uniquely combines bidirectional operation, 0.075 pF capacitance, and 3 A surge rating in a 0.63 mm × 0.33 mm WLCSP-enabling direct placement on next-generation high-speed differential interfaces without compromising bandwidth or board space.
Availability
AOZ8S205BL2-03 is available at Aetrix Electronics and suitable for USB4 interface protection, Thunderbolt 4 host port hardening, and PCIe Gen 4/5 add-in card edge applications requiring stable component supply across automotive, industrial, and premium consumer programs.
Supply support for AOZ8S205BL2-03 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 and Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, TVS diodes, and power ICs for efficiency-critical applications.
The AOZ8S205BL2-03 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically to protect multi-gigabit differential data interfaces without sacrificing signal integrity or PCB real estate.
FAQ
What is the pin configuration of the AOZ8S205BL2-03?
The AOZ8S205BL2-03 uses a 3-pin WLCSP0.63×0.33A-3 package: Pin 1 (I/O1) and Pin 3 (I/O3) serve as bidirectional I/O terminals for two independent channels, while Pin 2 is the common ground reference. This layout enables compact, symmetric protection of differential pairs without external routing complexity. The AOZ8S205BL2-03 datasheet confirms this configuration on Page 2.
Does the AOZ8S205BL2-03 support bidirectional transient suppression?
Yes, the AOZ8S205BL2-03 is explicitly designed as a bidirectional TVS diode, allowing it to clamp positive and negative transients on each channel without polarity constraints. This makes the AOZ8S205BL2-03 ideal for protecting AC-coupled, full-duplex high-speed interfaces like USB4 and Thunderbolt 4 where signal swing crosses ground.
What is the maximum clamping voltage of the AOZ8S205BL2-03 under IEC 61000-4-5 surge conditions?
Under IEC 61000-4-5 (8/20 µs) surge testing, the AOZ8S205BL2-03 clamps to 5.5 V at 3 A peak pulse current. This value is specified in the Electrical Characteristics table on Page 3 of the AOZ8S205BL2-03 datasheet and ensures safe operation within the voltage tolerance of 3.3 V I/O circuits.
Is the AOZ8S205BL2-03 RoHS compliant and halogen-free?
Yes, the AOZ8S205BL2-03 is RoHS compliant and classified as a Green Product per AOS's environmental policy. It uses Pb-free plating and meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements. Full compliance documentation is available in AOS's Green Policy document referenced on Page 2 of the AOZ8S205BL2-03 datasheet.
Can the AOZ8S205BL2-03 be used for PCIe Gen 5 applications?
Yes, the AOZ8S205BL2-03 is validated for PCIe Gen 5 applications due to its 0.075 pF capacitance, which minimizes insertion loss and jitter accumulation at 32 GT/s signaling rates. Its low clamping voltage and fast response time preserve eye opening, as demonstrated in PCIe-related eye diagrams included in the AOZ8S205BL2-03 datasheet on Page 5.
AOZ8S205BL2-03 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):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 5.5V (Typ)
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 16W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.075pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-WLCSP (0.63x0.33)
AOZ8S205BL2-03 FAQ
1.How can I place an order for AOZ8S205BL2-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S205BL2-03 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 AOZ8S205BL2-03 reliable?
The price and inventory of AOZ8S205BL2-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S205BL2-03 is usually 5 days.
3.What payment methods are accepted for AOZ8S205BL2-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S205BL2-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S205BL2-03?
AOZ8S205BL2-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S205BL2-03 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 AOZ8S205BL2-03?
For technical support, including AOZ8S205BL2-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S205BL2-03 requirements.
6.How does Aetrix verify that AOZ8S205BL2-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8S205BL2-03 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 AOZ8S205BL2-03 meets industry standards.
7.What is the process for return or replacement of AOZ8S205BL2-03?
All AOZ8S205BL2-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S205BL2-03, 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 AOZ8S205BL2-03 part is unused and in its original packaging.
Return procedure for AOZ8S205BL2-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8S205BL2-03 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
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…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
