My Inquiry
My Account
onsemi SZESD9B5.0ST5G
- Part No.:
- SZESD9B5.0ST5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOD-923
- Datasheet:
-
SZESD9B5.0ST5G.pdf
- Description:
- TVS DIODE 5VWM 12.5VC SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:29,977
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZESD9B5.0ST5G from onsemi is a bi-directional ESD protection diode designed for I/O line protection in portable electronics. It features a 5.0 V working peak reverse voltage (VRWM), 15 pF capacitance, clamping voltage of 12.5 V at 1 A IPP, IEC 61000-4-2 Level 4 compliance (±18 kV contact), and SOD-923 package (1.0 × 0.60 × 0.37 mm).
For engineers reviewing the SZESD9B5.0ST5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under 1 A/2 A ESD pulses, low leakage (<100 nA at VRWM), IEC61000-4-2 Level 4 robustness, and sub-1 mm footprint suitability for high-density USB, HDMI, and audio interface layouts.
Technical Context
This device operates as a transient voltage suppression (TVS) diode with bi-directional avalanche breakdown behavior, enabling symmetric clamping for AC-coupled or differential signal lines. Its 5.0 V VRWM ensures compatibility with 5 V logic rails while maintaining margin above typical 4.5–5.5 V supply tolerances.
Response time <1 ns and low 15 pF capacitance minimize signal distortion on high-speed interfaces such as USB 2.0 and I²C. AEC-Q101 qualification confirms suitability for automotive infotainment and telematics modules requiring enhanced reliability under thermal cycling and humidity stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0 V - Maximum continuous reverse operating voltage before conduction; matches standard 5 V digital interface rails. |
| Clamping Voltage (VC) | 12.5 V @ 1 A IPP - Peak voltage seen by protected IC during IEC61000-4-2 contact discharge; limits downstream IC stress. |
| Capacitance (C) | 15 pF @ 0 V, 1 MHz - Low enough to avoid signal integrity degradation on USB 2.0 (480 Mbps) and audio codec lines. |
| ESD Rating | ±18 kV contact per IEC 61000-4-2 Level 4 - Full system-level ESD immunity without external shielding or layout derating. |
| Leakage Current (IR) | <100 nA @ VRWM - Negligible DC loading on battery-powered sensor or touch controller inputs. |
| Package | SOD-923 (1.0 × 0.60 × 0.37 mm) - Enables placement directly at connector pads with minimal PCB area impact. |
Pinout & Package
SOD-923 surface-mount package: 2-terminal, ultra-compact plastic case (CASE 514AB), 100% matte tin lead finish, MSL 1, compatible with standard reflow profiles up to 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Bi-directional cathode terminal | Marked end; forms symmetrical avalanche junction with Pin 2-no polarity dependency in circuit layout. |
| 2 (Anode) | Bi-directional anode terminal | Unmarked end; completes bidirectional clamping path-enables single-device protection of AC signals like USB D+/D−. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 Level 4 compliance | Guarantees ±18 kV contact ESD survival without functional interruption in handheld consumer devices. |
| AEC-Q101 qualification | Validated for automotive-grade temperature cycling (-55°C to +150°C) and humidity exposure per stress test requirements. |
| 15 pF low capacitance | Preserves rise/fall times on 480 Mbps USB 2.0 data lines-meets eye diagram mask requirements without equalization. |
| Sub-1 mm footprint | Reduces PCB real estate by >50% vs. SOD-523; enables direct placement at micro-USB or HDMI Type-C connector pads. |
Applications
| USB 2.0 Interface Protection | HDMI DDC Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines in smartphones and portable SSDs against user-handling ESD events. IC Role / Device Role: Bi-directional TVS diode placed immediately adjacent to USB connector to clamp transients before reaching PHY IC. Use Value: 15 pF capacitance avoids signal attenuation at 480 MHz; 12.5 V clamping prevents PHY latch-up during ±15 kV air discharge. | Use Scenario: Safeguarding HDMI DDC (I²C) clock/data lines in set-top boxes and monitors from ESD coupling via cable insertion. IC Role / Device Role: Low-capacitance shunt protector on 3.3 V I²C bus, co-located with HDMI receptacle. Use Value: 100 nA leakage preserves I²C pull-up current budget; 5.0 V VRWM aligns with HDMI DDC logic voltage range. |
| Automotive Infotainment Touchscreen | Portable Audio Codec Interface |
Use Scenario: ESD hardening of capacitive touchscreen controller I/Os in automotive head units exposed to glove-contact discharge. IC Role / Device Role: AEC-Q101-qualified bi-directional clamp on analog front-end (AFE) input traces. Use Value: ±18 kV contact rating meets ISO 10605 requirements; 0.37 mm height avoids interference with stacked FPC connectors. | Use Scenario: Protecting I²S and analog audio paths in Bluetooth headphones and wireless earbuds. IC Role / Device Role: Ultra-small footprint ESD suppressor on codec serial interface and microphone bias lines. Use Value: SOD-923 size fits within 0.8 mm pitch flex routing; 15 pF avoids jitter on 1.411 MHz I²S master clock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9B5.0ST5G | Same electrical specs and SOD-923 package; non-automotive grade marking (no "SZ" prefix). | Identical performance in commercial portable designs; lacks AEC-Q101 documentation traceability. | Select when automotive qualification is not required and cost sensitivity is higher. |
| TPD2E001DRYR | 12 pF capacitance, 13 V clamping @ 1 A, SOT-553 package (1.6 × 1.6 × 0.6 mm), 3.3 V VRWM. | Better for 3.3 V systems; larger footprint limits ultra-dense layouts; no AEC-Q101 rating. | Prefer for lower-clamp 3.3 V I/Os where board space allows SOT-553 placement. |
Compared with ESD9B5.0ST5G and TPD2E001DRYR, SZESD9B5.0ST5G uniquely combines AEC-Q101 qualification, 5.0 V VRWM, and 1.0 mm × 0.6 mm footprint-making it optimal for space-constrained automotive and premium consumer I/O protection where both voltage rating and reliability certification are mandatory.
Availability
SZESD9B5.0ST5G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment touchscreen hardening, and portable audio codec interface safeguarding requiring stable component supply across production lifecycles.
Supply support for SZESD9B5.0ST5G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient technologies for automotive, industrial, cloud, and intelligent edge applications.
SZESD9B5.0ST5G belongs to the ESD9B series-a family of ultra-small, bi-directional ESD suppressors engineered specifically for high-density portable and automotive electronics where board space and IEC61000-4-2 Level 4 immunity are critical constraints.
FAQ
What is the clamping voltage of SZESD9B5.0ST5G at 2 A ESD current?
The clamping voltage of SZESD9B5.0ST5G is 15.0 V maximum at 2 A peak pulse current (IPP), per IEC 61000-4-2 waveform conditions. This value is measured across the device terminals during standardized 8 kV contact discharge testing and defines the upper voltage limit imposed on protected circuitry under severe ESD stress. The SZESD9B5.0ST5G maintains this specification across its full operating temperature range of −55°C to +150°C.
Is SZESD9B5.0ST5G suitable for protecting 3.3 V logic lines?
No-SZESD9B5.0ST5G has a 5.0 V working peak reverse voltage (VRWM), making it mismatched for direct use on 3.3 V rails where clamping may occur prematurely. For 3.3 V interfaces, onsemi's SZESD9B3.3ST5G (VRWM = 3.3 V) is the functionally aligned variant. Using SZESD9B5.0ST5G on 3.3 V lines risks insufficient margin below breakdown and potential false triggering during normal operation.
Does SZESD9B5.0ST5G require orientation-specific PCB layout?
No-SZESD9B5.0ST5G is a bi-directional ESD protection diode with symmetrical avalanche characteristics; its SOD-923 package uses a cathode band (Pin 1) but functions identically regardless of installation direction. Layouts can treat it as polarity-agnostic, simplifying automated placement and eliminating orientation verification during assembly. This symmetry is confirmed in the device's I-V curves for both positive and negative ESD pulses.
What is the thermal resistance (RJA) of SZESD9B5.0ST5G on FR-5 board?
The junction-to-ambient thermal resistance (RJA) of SZESD9B5.0ST5G is 400°C/W when mounted on a standard FR-5 test board (1.0 × 0.75 × 0.62 inches), per the manufacturer's maximum ratings table. This value reflects passive dissipation only-no copper pour or thermal vias-and confirms the device's suitability for low-duty-cycle ESD events rather than continuous power handling. The SZESD9B5.0ST5G does not require heatsinking in typical ESD protection applications.
How does the AEC-Q101 qualification of SZESD9B5.0ST5G differ from standard ESD9B5.0ST5G?
The "SZ" prefix in SZESD9B5.0ST5G denotes automotive-grade manufacturing controls, including lot traceability, extended temperature validation (−55°C to +150°C), and PPAP documentation readiness-distinct from commercial-grade ESD9B5.0ST5G. Both share identical electrical parameters and SOD-923 packaging, but only SZESD9B5.0ST5G carries formal AEC-Q101 test reports and is approved for use in automotive infotainment and body control modules per OEM requirements.
SZESD9B5.0ST5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOD-923
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 5.8V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 15A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 15pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-923
SZESD9B5.0ST5G FAQ
1.How can I place an order for SZESD9B5.0ST5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD9B5.0ST5G 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 SZESD9B5.0ST5G reliable?
The price and inventory of SZESD9B5.0ST5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD9B5.0ST5G is usually 5 days.
3.What payment methods are accepted for SZESD9B5.0ST5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD9B5.0ST5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD9B5.0ST5G?
SZESD9B5.0ST5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD9B5.0ST5G 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 SZESD9B5.0ST5G?
For technical support, including SZESD9B5.0ST5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD9B5.0ST5G requirements.
6.How does Aetrix verify that SZESD9B5.0ST5G is sourced from the original manufacturer or authorized distributors?
All SZESD9B5.0ST5G 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 SZESD9B5.0ST5G meets industry standards.
7.What is the process for return or replacement of SZESD9B5.0ST5G?
All SZESD9B5.0ST5G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD9B5.0ST5G, 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 SZESD9B5.0ST5G part is unused and in its original packaging.
Return procedure for SZESD9B5.0ST5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZESD9B5.0ST5G 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
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…
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…
