My Inquiry
My Account
onsemi MMBZ5232ELT1G
- Part No.:
- MMBZ5232ELT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5232ELT1G.pdf
- Description:
- DIODE ZENER 5.6V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,553
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMBZ5232ELT1G from onsemi is a 5.6 V ±5% Zener voltage regulator diode in SOT-23 package, rated for 225 mW power dissipation at 25°C, with 11 Ω dynamic impedance at 20 mA test current and 0.25 μA leakage current at 3 V reverse bias. It serves as a precision voltage reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the MMBZ5232ELT1G datasheet, pinout, applications, or equivalent options, this device is selected for space-constrained, low-current regulation tasks where stable 5.6 V reference, ESD robustness (>16 kV HBM), and Pb-free compliance are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable voltage across its cathode-anode terminals. Its nominal 5.6 V Zener voltage is specified at 20 mA test current (IZT), with temperature coefficient near zero - typical for mid-voltage Zeners in the 5–6 V range - minimizing drift over −65°C to +150°C junction temperature.
The SOT-23 package features Pin 1 (Anode), Pin 2 (No Connection), and Pin 3 (Cathode), enabling unidirectional clamping or shunt regulation. With 1600 Ω maximum impedance at knee current (IZK = 0.25 mA) and 11 Ω at IZT, it supports both precision reference and transient suppression roles in low-power signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.32–5.88 V @ 20 mA - defines regulated output voltage tolerance band for reference or clamp design |
| Power Dissipation (PD) | 225 mW on FR-5 board @ 25°C - sets max continuous DC power handling before thermal derating |
| Zener Impedance (ZZT) | 11 Ω @ 20 mA - indicates low AC impedance for stable regulation under small-signal load variation |
| Leakage Current (IR) | 0.25 μA @ 3 V - ensures minimal parasitic current draw in standby or high-impedance bias networks |
| ESD Rating | Class 3 (>16 kV HBM) - enables direct integration into handheld devices without external ESD protection |
| Junction Temp Range | −65°C to +150°C - supports operation in automotive under-hood or industrial ambient environments |
Pinout & Package
SOT-23 (TO-236) surface-mount plastic package, 2.90 × 1.30 × 1.00 mm, void-free thermosetting case with corrosion-resistant finish; polarity indicated by cathode band; Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Connected to lower-potential node in reverse-bias configuration; carries forward current when used as rectifier |
| 2 (NC) | No connection | Internally unconnected; must remain floating - no PCB trace or pad tie required |
| 3 (Cathode) | Cathode connection | Connected to higher-potential node in Zener mode; defines regulated voltage reference point |
Key Features
| Feature | Design Value |
|---|---|
| 225 mW power rating on FR-5 board | Enables use in compact PCB layouts without heatsinking for low-duty-cycle or intermittent regulation |
| ESD robustness >16 kV (HBM) | Reduces need for external TVS or ESD protection in consumer portables and wearables |
| Small SOT-23 footprint | Supports ≥2× higher component density vs. DO-35 or SOD-123 in battery-powered PCBs |
| Pb-free and RoHS-compliant | Meets global environmental compliance requirements for commercial and industrial end equipment |
Applications
| Smartphone Power Rail Clamp | IoT Sensor Bias Reference |
|---|---|
Use Scenario: Clamping 5 V USB-supplied rail against transient spikes during hot-plug events. IC Role / Device Role / Timing Role: Shunt Zener clamp protecting LDO input and PMIC interface pins. Use Value: Prevents latch-up or damage to downstream 5 V logic with <0.25 μA standby leakage and 11 Ω dynamic impedance. |
Use Scenario: Providing stable 5.6 V reference for analog front-end of sub-100 μA gas sensor node. IC Role / Device Role / Timing Role: Precision voltage reference for ADC bias and op-amp feedback network. Use Value: Maintains ±5% regulation across −40°C to +85°C ambient with negligible current draw in sleep mode. |
| Wearable Battery Monitor | Industrial PLC Input Protection |
Use Scenario: Regulating voltage for fuel gauge IC powered from single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Low-power Zener shunt regulator generating fixed bias from varying battery source. Use Value: Delivers stable 5.6 V reference using only 20 mA Zener current - compatible with micro-power system budget. |
Use Scenario: Protecting 24 V digital input channel against surges and ESD in factory automation panel. IC Role / Device Role / Timing Role: Secondary clamping element downstream of primary TVS, limiting residual overshoot to safe levels. Use Value: Adds <16 kV HBM immunity and 225 W peak pulse handling (8 × 20 μs) without increasing board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V6LT1G | Same 5.6 V nominal Zener, but 300 mW rating and 40 Ω ZZT @ 5 mA - higher power, higher impedance | Better suited for higher-current regulation; less precise at low currents due to higher ZZK | Select when >200 mW continuous dissipation or higher surge margin is needed; verify layout thermal relief. |
| MMBZ5232BS | Same electrical specs but in SOD-323 package - 1.7 × 1.25 mm vs. SOT-23's 2.9 × 1.3 mm | Smaller footprint but lower power handling (200 mW); not drop-in due to different pad layout and thermal mass | Choose for ultra-high-density designs where 0.25 mm height reduction and 30% smaller area justify requalification. |
Compared with BZX84-C5V6LT1G and MMBZ5232BS, the MMBZ5232ELT1G offers optimal balance of low dynamic impedance (11 Ω), industry-standard SOT-23 compatibility, and certified ESD robustness - making it preferred for production-grade portable and industrial control designs requiring repeatable 5.6 V clamping performance.
Availability
MMBZ5232ELT1G is available at Aetrix Electronics and suitable for smartphone power rail clamping, IoT sensor bias referencing, wearable battery monitoring, and industrial PLC input protection requiring stable component supply and full traceability.
Supply support for MMBZ5232ELT1G 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 electronics, delivering silicon solutions for automotive, industrial, cloud, and intelligent edge applications.
The MMBZ52xxELT1G series belongs to onsemi's precision Zener voltage regulator product line, engineered specifically for space-constrained, low-power voltage reference and overvoltage protection in portable and high-density electronic systems.
FAQ
What is the Zener voltage tolerance of MMBZ5232ELT1G?
The MMBZ5232ELT1G has a Zener voltage range of 5.32 V (min) to 5.88 V (max) at 20 mA test current, corresponding to a ±5% tolerance around the nominal 5.6 V value. This tolerance is guaranteed across operating temperatures and is verified per onsemi's production testing protocol.
Does MMBZ5232ELT1G have a built-in ESD protection rating?
Yes, the MMBZ5232ELT1G is rated Class 3 per Human Body Model (HBM) with >16 kV ESD withstand capability. This specification is validated per JEDEC JS-001 and allows direct integration into handheld and wearable devices without additional ESD components.
What is the thermal resistance (RJA) of MMBZ5232ELT1G on FR-5 board?
The junction-to-ambient thermal resistance of MMBZ5232ELT1G is 556°C/W when mounted on FR-5 board per standard JEDEC test conditions. This value determines the temperature rise above ambient at a given power dissipation - e.g., 225 mW yields ~125°C rise at 25°C ambient.
Is Pin 2 of MMBZ5232ELT1G electrically connected internally?
No, Pin 2 of the MMBZ5232ELT1G is a no-connect (NC) terminal - it is not bonded to any internal die structure and must remain unconnected on the PCB. The device functions identically whether Pin 2 is left floating or omitted from the footprint.
Can MMBZ5232ELT1G be used as a forward-biased diode?
Yes, the MMBZ5232ELT1G exhibits a forward voltage of ≤0.9 V at 10 mA forward current, allowing use as a general-purpose low-leakage switching or protection diode. However, its optimized design targets reverse-bias Zener operation - forward characteristics are secondary and not production-tested for switching speed or recovery.
MMBZ5232ELT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
MMBZ5232ELT1G FAQ
1.How can I place an order for MMBZ5232ELT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5232ELT1G 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 MMBZ5232ELT1G reliable?
The price and inventory of MMBZ5232ELT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5232ELT1G is usually 5 days.
3.What payment methods are accepted for MMBZ5232ELT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5232ELT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5232ELT1G?
MMBZ5232ELT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5232ELT1G 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 MMBZ5232ELT1G?
For technical support, including MMBZ5232ELT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5232ELT1G requirements.
6.How does Aetrix verify that MMBZ5232ELT1G is sourced from the original manufacturer or authorized distributors?
All MMBZ5232ELT1G 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 MMBZ5232ELT1G meets industry standards.
7.What is the process for return or replacement of MMBZ5232ELT1G?
All MMBZ5232ELT1G units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5232ELT1G, 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 MMBZ5232ELT1G part is unused and in its original packaging.
Return procedure for MMBZ5232ELT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5232ELT1G 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…
