My Inquiry
My Account
onsemi SZBZX84C11ET1G
- Part No.:
- SZBZX84C11ET1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C11ET1G.pdf
- Description:
- DIODE ZENER 11V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZBZX84C11ET1G from onsemi is a 11 V, 250 mW surface-mount Zener diode in SOT-23 package, designed for precision voltage regulation and reference in space-constrained circuits. It delivers nominal Zener voltage of 11.0 V at 10 mA test current, with dynamic impedance of 20 Ω at 10 mA and reverse leakage current ≤0.1 µA at 8.0 V, making it suitable for voltage clamping in portable power management and signal conditioning stages.
For engineers reviewing the SZBZX84C11ET1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5.5%), temperature coefficient (+5.4 mV/°C), ESD robustness (>16 kV HBM), low capacitance (130 pF at 0 V), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode-anode polarity, leveraging silicon PN-junction avalanche breakdown. Its thermal resistance is 500 °C/W on FR-5 board and 417 °C/W on alumina substrate, enabling stable operation up to +150 °C junction temperature.
The Zener voltage exhibits a positive temperature coefficient of +5.4 mV/°C at 10 mA, indicating predictable drift over temperature. It supports peak pulse power of 225 W (8 × 20 µs waveform) and maintains <0.1 µA reverse leakage at VR = 8.0 V - critical for low-power standby circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.4 V (min) to 11.6 V (max) at IZT = 10 mA - ensures ±5.5% regulation accuracy across production lot |
| Power Dissipation | 250 mW on FR-5 board - defines maximum continuous DC power handling without derating |
| Zener Impedance (ZZT) | 20 Ω max at IZT = 10 mA - determines output voltage stability under load transients |
| Reverse Leakage Current | ≤0.1 µA at VR = 8.0 V - enables use in ultra-low-quiescent-current bias networks |
| Capacitance | 130 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent nodes |
| ESD Rating | Class 3 (>16 kV) per HBM - allows direct handling and board assembly without special ESD controls |
| Temperature Coefficient | +5.4 mV/°C at IZT = 5 mA - quantifies voltage drift over industrial temperature range (−65°C to +150°C) |
Pinout & Package
Package: SOT-23 (TO-236), 2.90 mm × 1.30 mm × 1.00 mm body, Pb-free, RoHS compliant. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node; forward-biased during conduction, reverse-biased during Zener operation |
| 2 | No Connection | Internally unconnected terminal - must remain floating; no PCB trace or pad required |
| 3 | Cathode | Connected to higher-potential node; carries regulated output voltage when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and infotainment power rails |
| 250 mW power rating on FR-5 | Enables compact voltage reference design without external heat sinking in consumer portables |
| 130 pF junction capacitance | Minimizes signal coupling in mixed-signal PCB layouts near ADC references or op-amp inputs |
| ESD robustness >16 kV HBM | Eliminates need for external TVS protection in handheld device front-end circuitry |
| Pb-free and RoHS compliant | Meets global environmental compliance requirements for industrial and medical end equipment |
Applications
| Portable Power Supervision | Automotive Sensor Reference |
|---|---|
Use Scenario: Monitoring battery voltage in Bluetooth earbuds during charging and discharge cycles. IC Role / Device Role / Timing Role: Zener diode provides stable 11 V reference for comparator-based undervoltage lockout (UVLO) circuit. Use Value: Tight 10.4–11.6 V tolerance ensures consistent UVLO threshold across temperature and unit-to-unit variation. |
Use Scenario: Supplying precise bias voltage to MEMS pressure sensor signal conditioning amplifier in engine manifold. IC Role / Device Role / Timing Role: Functions as shunt voltage reference in ratiometric sensor excitation path. Use Value: +5.4 mV/°C tempco aligns with sensor compensation algorithms, reducing calibration overhead. |
| Industrial PLC Input Protection | USB-C Power Negotiation Clamp |
Use Scenario: Protecting 24 V digital input channel from transient overvoltage in factory automation controllers. IC Role / Device Role / Timing Role: Shunt clamp limiting input voltage to 11.6 V during surge events. Use Value: 225 W peak pulse rating absorbs 8 × 20 µs surges per IEC 61000-4-5 without degradation. |
Use Scenario: Clamping CC line voltage during USB-C PD negotiation to prevent controller latch-up. IC Role / Device Role / Timing Role: Low-capacitance (130 pF) Zener limits CC pin voltage to safe level while preserving communication integrity. Use Value: Minimal parasitic capacitance avoids signal distortion on 300 kHz PD communication waveform. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C11ET1G | Same electrical specs but lacks AEC-Q101 qualification and SZ-prefix automotive traceability | Not approved for automotive production; limited to commercial-grade consumer or industrial use | Select only if automotive qualification and PPAP documentation are not required |
| MMSZ4685T1G | 11 V nominal, 500 mW rating, 30 Ω ZZT, 100 pF capacitance, same SOT-23 package | Higher power handling enables longer surge duration support; slightly higher impedance affects regulation tightness | Prefer when higher pulse energy absorption or lower capacitance is prioritized over automotive compliance |
Compared with SZBZX84C11ET1G, BZX84C11ET1G offers identical regulation performance but omits automotive validation, while MMSZ4685T1G trades AEC-Q101 compliance for higher power and lower capacitance - guiding selection based on qualification needs versus electrical margin.
Availability
SZBZX84C11ET1G is available at Aetrix Electronics and suitable for portable electronics, automotive sensor systems, and industrial control applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for SZBZX84C11ET1G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZBZX84C11ET1G belongs to the BZX84CxxxET1G/SZBZX84CxxxET1G series - a family of 250 mW SOT-23 Zener diodes engineered for high-density voltage regulation in automotive and portable electronics where space, reliability, and ESD immunity are critical.
FAQ
What is the Zener voltage tolerance of SZBZX84C11ET1G at 10 mA test current?
The SZBZX84C11ET1G has a Zener voltage range of 10.4 V (minimum) to 11.6 V (maximum) at IZT = 10 mA, corresponding to a ±5.5% tolerance about the nominal 11.0 V value. This specification is guaranteed across the full operating temperature range of −65°C to +150°C and is verified per onsemi's production test flow.
Is SZBZX84C11ET1G suitable for automotive applications?
Yes, SZBZX84C11ET1G is AEC-Q101 qualified and PPAP capable, with manufacturing traceability meeting automotive quality system requirements. The "SZ" prefix denotes dedicated automotive process control, site-specific change management, and extended reliability testing - making SZBZX84C11ET1G appropriate for engine control units, ADAS sensors, and infotainment power supplies.
What is the thermal resistance of SZBZX84C11ET1G on standard FR-5 PCB?
The thermal resistance from junction to ambient (RJA) for SZBZX84C11ET1G is 500 °C/W when mounted on an FR-5 board per the datasheet's test condition (1.0 × 0.75 × 0.62 inch). This value assumes no copper pour or thermal vias; adding 1 in² of 2-oz copper on both sides reduces RJA to approximately 200 °C/W in typical layout practice.
Does SZBZX84C11ET1G have a connected pin 2?
No, pin 2 of SZBZX84C11ET1G is internally unconnected (NC). The device uses a three-terminal SOT-23 package with pin 1 as anode, pin 2 as no connection, and pin 3 as cathode - confirmed in the mechanical outline (Style 8) and electrical characteristics table. Pin 2 must remain unconnected on the PCB.
What is the maximum reverse leakage current for SZBZX84C11ET1G at 8.0 V?
The maximum reverse leakage current for SZBZX84C11ET1G is 0.1 µA at VR = 8.0 V and TA = 25°C, as specified in the Electrical Characteristics table. This low leakage supports use in battery-powered devices where standby current must remain below 1 µA, such as remote sensors or wearables with multi-year battery life targets.
SZBZX84C11ET1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZBZX84C11ET1G FAQ
1.How can I place an order for SZBZX84C11ET1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C11ET1G 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 SZBZX84C11ET1G reliable?
The price and inventory of SZBZX84C11ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C11ET1G is usually 5 days.
3.What payment methods are accepted for SZBZX84C11ET1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C11ET1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C11ET1G?
SZBZX84C11ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C11ET1G 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 SZBZX84C11ET1G?
For technical support, including SZBZX84C11ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C11ET1G requirements.
6.How does Aetrix verify that SZBZX84C11ET1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C11ET1G 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 SZBZX84C11ET1G meets industry standards.
7.What is the process for return or replacement of SZBZX84C11ET1G?
All SZBZX84C11ET1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C11ET1G, 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 SZBZX84C11ET1G part is unused and in its original packaging.
Return procedure for SZBZX84C11ET1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C11ET1G Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
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…
