My Inquiry
My Account
onsemi SZBZX84B22LT1G
- Part No.:
- SZBZX84B22LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84B22LT1G.pdf
- Description:
- DIODE ZENER 22V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,210
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZBZX84B22LT1G from onsemi is a 22 V ±1.8% tight-tolerance Zener diode in SOT-23 package, rated for 250 mW power dissipation on FR-5 board, with 55 Ω dynamic impedance at 5 mA and −55 °C to +150 °C operating temperature range. It provides precision voltage regulation in space-constrained DC biasing and reference circuits for portable electronics.
For engineers reviewing the SZBZX84B22LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±1.8%), thermal coefficient (+15.4 mV/°C), low leakage (≤50 nA @ 17.6 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, designed for reverse-bias breakdown regulation. Its tight 22 V nominal Zener voltage (21.6–22.4 V at 5 mA) and low dynamic impedance ensure stable output under varying load currents.
The SOT-23 package supports automated placement and reflow soldering per JEDEC J-STD-020, with Pb-free finish and UL 94 V-0 flammability rating. ESD robustness exceeds 16 kV (HBM Class 3), enabling use in handheld and automotive environments without additional protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 21.6–22.4 V at 5 mA - ensures ±1.8% regulation accuracy for precision reference designs |
| Power Dissipation | 250 mW on FR-5 board - supports compact PCB layouts without forced cooling |
| Zener Impedance | 55 Ω max at 5 mA - maintains low output variation under dynamic load changes |
| Reverse Leakage | ≤50 nA at 17.6 V - minimizes quiescent current in battery-powered systems |
| Temp Coefficient | +15.4 mV/°C - enables predictable drift compensation in wide-temperature applications |
| Capacitance | 85 pF at 0 V, 1 MHz - suitable for low-frequency regulation, not RF bypass |
| ESD Rating | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in consumer interfaces |
Pinout & Package
SOT-23 (TO-236) surface-mount package, 2.90 × 1.30 × 1.00 mm, void-free thermosetting plastic case with corrosion-resistant, solderable finish. Cathode indicated by band; maximum soldering temperature 260 °C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-bias configuration; carries forward current during transient overvoltage |
| 2 | No Connection | Internally unconnected terminal; must remain floating - no PCB trace or pad required |
| 3 | Cathode | Connected to regulated output node; defines Zener breakdown voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±1.8% (21.6–22.4 V) - reduces calibration overhead in factory programming and sensor reference circuits |
| AEC-Q101 qualification | Automotive-grade reliability with PPAP capability - enables direct use in infotainment power rails and ADAS subsystems |
| Pb-free & RoHS compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-020 - supports global manufacturing and end-of-life compliance |
| High ESD immunity | Class 3 (>16 kV HBM) - protects against human handling damage during assembly and field service |
| Low thermal resistance | 500 °C/W junction-to-ambient on FR-5 - allows operation up to +125 °C ambient without derating in sealed enclosures |
Applications
| Portable Power Management | Automotive Sensor Reference |
|---|---|
Use Scenario: Regulating bias voltage for analog front-end ICs in Bluetooth headsets and smartwatches. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing stable 22 V supply to op-amp input stages. Use Value: Tight ±1.8% tolerance eliminates post-production trimming; 250 mW rating accommodates peak surge currents during RF transmission bursts. |
Use Scenario: Supplying precise excitation voltage to MEMS pressure sensors in engine control units. IC Role / Device Role / Timing Role: Temperature-compensated Zener reference ensuring sensor linearity across −40 °C to +125 °C. Use Value: +15.4 mV/°C tempco matches typical sensor drift profiles; AEC-Q101 qualification guarantees 15-year field reliability. |
| Industrial PLC I/O Protection | Medical Wearable Biasing |
Use Scenario: Clamping transient overvoltages on 24 V digital input channels in programmable logic controllers. IC Role / Device Role / Timing Role: Fast-response shunt regulator absorbing EFT bursts and inductive kickback energy. Use Value: 55 Ω dynamic impedance limits clamping voltage overshoot to <24.5 V; 16 kV HBM rating withstands repeated ESD events. |
Use Scenario: Generating stable bias for low-noise instrumentation amplifiers in ECG patch monitors. IC Role / Device Role / Timing Role: Low-leakage (≤50 nA) Zener reference minimizing current draw from coin-cell batteries. Use Value: 50 nA max leakage extends battery life beyond 14 days continuous operation; SOT-23 footprint saves >60% board area vs. DO-35. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84B22LT1G | Same electrical specs but lacks SZ-prefix AEC-Q101 qualification and PPAP support | Acceptable for commercial-grade portable devices; not approved for automotive production | Select when cost sensitivity outweighs automotive compliance requirements |
| MMSZ4686T1G | 22 V nominal, ±5% tolerance (20.9–23.1 V), 500 mW rating, higher leakage (≤100 nA) | Better power handling for high-surge industrial inputs; looser tolerance increases calibration burden | Choose for non-precision applications requiring higher surge energy absorption |
Compared with BZX84B22LT1G, SZBZX84B22LT1G adds automotive qualification and tighter process control, while MMSZ4686T1G trades tolerance for higher power and broader voltage margin - making SZBZX84B22LT1G optimal for safety-critical, space-constrained reference designs.
Availability
SZBZX84B22LT1G is available at Aetrix Electronics and suitable for automotive sensor modules, portable medical devices, and industrial I/O protection circuits requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for SZBZX84B22LT1G 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
SZBZX84BxxxLT1G belongs to onsemi's AEC-Q101-qualified Zener diode family, engineered specifically for automotive subsystems and industrial equipment demanding high-reliability voltage regulation in miniaturized packages.
FAQ
What is the Zener voltage tolerance of SZBZX84B22LT1G?
The SZBZX84B22LT1G has a nominal Zener voltage of 22 V with a tight tolerance of ±1.8%, specified as 21.6 V minimum to 22.4 V maximum at 5 mA test current. This precision enables accurate voltage referencing without post-manufacturing calibration in automotive and medical applications where stability is critical.
Is SZBZX84B22LT1G qualified for automotive use?
Yes, SZBZX84B22LT1G is AEC-Q101 qualified and PPAP capable, meeting stringent automotive reliability standards for temperature cycling, humidity resistance, and mechanical shock. The "SZ" prefix denotes automotive-specific process controls and traceability, distinguishing it from commercial-grade BZX84B22LT1G variants.
What is the maximum power dissipation for SZBZX84B22LT1G on a standard PCB?
SZBZX84B22LT1G is rated for 250 mW total power dissipation on FR-5 board at 25 °C ambient, derating linearly by 2.0 mW/°C above that temperature. On alumina substrate, it supports 300 mW at 25 °C, making thermal design straightforward in compact, convection-cooled assemblies.
How does the temperature coefficient affect SZBZX84B22LT1G performance?
The SZBZX84B22LT1G exhibits a positive temperature coefficient of +15.4 mV/°C at 5 mA, meaning its Zener voltage increases predictably with rising junction temperature. This behavior allows designers to compensate for thermal drift in sensor reference circuits or select complementary components for zero-drift designs.
What packaging and marking information applies to SZBZX84B22LT1G?
SZBZX84B22LT1G is supplied in SOT-23 tape-and-reel packaging (3,000 units per reel), with device marking "T24" on the top surface. The package features Pb-free finish, UL 94 V-0 flammability rating, and cathode polarity indicated by a band adjacent to pin 3 - consistent with JEDEC TO-236 outline and onsemi's standard SOT-23 mechanical drawings.
SZBZX84B22LT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZBZX84BxxxLT1G
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 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)
SZBZX84B22LT1G FAQ
1.How can I place an order for SZBZX84B22LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84B22LT1G 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 SZBZX84B22LT1G reliable?
The price and inventory of SZBZX84B22LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84B22LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84B22LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84B22LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84B22LT1G?
SZBZX84B22LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84B22LT1G 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 SZBZX84B22LT1G?
For technical support, including SZBZX84B22LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84B22LT1G requirements.
6.How does Aetrix verify that SZBZX84B22LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84B22LT1G 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 SZBZX84B22LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84B22LT1G?
All SZBZX84B22LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84B22LT1G, 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 SZBZX84B22LT1G part is unused and in its original packaging.
Return procedure for SZBZX84B22LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84B22LT1G 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
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…
