My Inquiry
My Account
onsemi MMBZ5262BLT1G
- Part No.:
- MMBZ5262BLT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5262BLT1G.pdf
- Description:
- DIODE ZENER 51V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,236
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMBZ5262BLT1G from onsemi is a 51 V ±5% Zener diode in SOT-23 package, rated for 225 mW power dissipation on FR-5 board, with 1100 Ω dynamic impedance at 2.5 mA test current and 0.1 μA leakage at 39 V reverse bias. It serves as a precision voltage reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the MMBZ5262BLT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal resistance (556 °C/W), ESD rating (>16 kV HBM), cathode-anode polarity marking, and compatibility with automated SMT assembly on high-density PCBs.
Technical Context
This device operates in reverse-biased Zener breakdown mode to maintain stable voltage regulation under varying load and temperature conditions. Its 51 V nominal Zener voltage exhibits a positive temperature coefficient near zero crossing, minimizing drift across −55°C to +150°C junction range.
The SOT-23 package features a defined pinout (Pin 1: Anode, Pin 2: No Connection, Pin 3: Cathode) and supports surface-mount reflow up to 260°C for 10 seconds. Thermal resistance of 556 °C/W (FR-5 board) defines its derating behavior above 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 48.45 V min / 51 V nom / 53.55 V max @ IZT = 2.5 mA - ensures ±5% regulation accuracy in feedback loops |
| Power Dissipation (PD) | 225 mW @ TA = 25°C on FR-5 board - limits continuous clamping energy in space-constrained designs |
| Zener Impedance (ZZT) | 1100 Ω max @ IZT = 2.5 mA - determines output voltage variation under dynamic load changes |
| Leakage Current (IR) | 0.1 μA max @ VR = 39 V - guarantees minimal standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - enables robust handling during manual assembly and field operation |
| Junction Temp Range | −65°C to +150°C - supports automotive cabin and industrial ambient environments without derating |
Pinout & Package
SOT-23 (TO-236) package: 2.90 mm × 1.30 mm × 1.00 mm body, 1.90 mm lead pitch, void-free thermosetting plastic case with corrosion-resistant finish and UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower-potential node in reverse-bias configuration; required for proper Zener conduction path |
| Pin 2 | No Connection | Internally unconnected; must remain floating-no routing or soldering allowed |
| Pin 3 | Cathode | Marked with polarity band; connects to higher-potential node and provides regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free, Halogen-Free/BFR-Free | RoHS-compliant construction enabling global regulatory acceptance and simplified end-of-life processing |
| Automated Assembly Optimized | Standard SOT-23 footprint and marking support high-speed pick-and-place and AOI inspection |
| High-Density PCB Compatibility | Small 2.90 × 1.30 mm outline allows placement adjacent to ICs and connectors in compact layouts |
| Stable Zener Voltage Tolerance | ±5% over full operating temperature range ensures predictable clamping without calibration |
Applications
| Smartphone Power Management | IoT Sensor Node Protection |
|---|---|
Use Scenario: Clamping transient surges on USB VBUS and PMIC enable lines during hot-plug events. IC Role / Device Role / Timing Role: Voltage reference and overvoltage protection element placed directly at IC input pins. Use Value: Prevents latch-up in 51 V-tolerant analog front-ends while consuming <0.1 μA standby current. |
Use Scenario: Regulating bias voltage for ultra-low-power ADC reference buffers in battery-operated sensors. IC Role / Device Role / Timing Role: Precision shunt regulator providing stable 51 V reference for ratiometric measurements. Use Value: Enables 12-bit measurement accuracy with <1100 Ω dynamic impedance limiting noise coupling. |
| Industrial PLC Input Conditioning | Automotive Infotainment ESD Clamp |
Use Scenario: Protecting 24 V DC input channels against induced transients in factory-floor wiring harnesses. IC Role / Device Role / Timing Role: Secondary clamping stage after TVS diodes, absorbing residual energy below 51 V threshold. Use Value: Extends system MTBF by limiting voltage overshoot to ≤53.55 V during 1 kV/μs surge events. |
Use Scenario: Safeguarding HDMI and USB-C data lines in head units against human-body ESD events. IC Role / Device Role / Timing Role: High-impedance Zener clamp integrated into signal path with minimal capacitance impact. Use Value: Provides >16 kV HBM immunity without degrading signal integrity due to low 1–5 pF typical capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C51LT1G | Same 51 V nominal Zener, but 300 mW rating on FR-4 and 1500 Ω ZZT @ 5 mA - higher power but looser impedance control | Preferred where higher surge energy absorption is needed, but less suitable for precision reference use | Select when board layout allows larger thermal pad or when 5 mA test current aligns with system bias design |
| SZMMBZ5262BLT1G | Identical electrical specs, but AEC-Q101 qualified and PPAP-capable - same Zener voltage, impedance, and leakage | Required for automotive OEM production; not suitable for cost-sensitive consumer applications | Choose only when automotive qualification documentation and traceability are mandatory for the BOM |
Compared with MMBZ5262BLT1G, BZX84-C51LT1G offers higher power handling at the expense of tighter impedance control, while SZMMBZ5262BLT1G delivers identical performance with added automotive compliance overhead - neither is pin-compatible drop-in replacement due to differing qualification status and thermal derating curves.
Availability
MMBZ5262BLT1G is available at Aetrix Electronics and suitable for smartphone power management, IoT sensor node protection, and industrial PLC input conditioning requiring stable component supply with full RoHS compliance and SMT-ready packaging.
Supply support for MMBZ5262BLT1G 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and intelligent edge applications.
The MMBZ52xxBLT1G series was designed specifically for space-constrained, low-power voltage regulation and transient suppression in portable and high-density PCB environments.
FAQ
What is the Zener voltage tolerance of MMBZ5262BLT1G?
The MMBZ5262BLT1G has a Zener voltage specification of 48.45 V minimum, 51 V nominal, and 53.55 V maximum at 2.5 mA test current, corresponding to a ±5% tolerance band. This tolerance remains valid across the full operating junction temperature range of −65°C to +150°C, as confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet.
Does MMBZ5262BLT1G have a built-in ESD protection rating?
Yes, MMBZ5262BLT1G is rated Class 3 for ESD per the Human Body Model with >16 kV withstand capability. This rating is explicitly stated in the Features section of the onsemi datasheet and verified through standardized testing - no external ESD components are required for basic handling and board-level surge immunity in consumer-grade applications.
What is the thermal resistance of MMBZ5262BLT1G on standard PCB material?
MMBZ5262BLT1G has a junction-to-ambient thermal resistance (RJA) of 556 °C/W when mounted on an FR-5 board. This value is specified in the Maximum Ratings table and defines the device's derating slope of 1.8 mW/°C above 25°C ambient temperature - critical for calculating safe operating area in thermally constrained layouts.
Is Pin 2 of MMBZ5262BLT1G electrically connected internally?
No, Pin 2 of MMBZ5262BLT1G is a no-connect terminal - it is not bonded to any internal die structure and must remain unconnected on the PCB. The official pinout diagram on page 2 of the onsemi datasheet confirms this configuration for Style 8 SOT-23 devices in the MMBZ52xxBLT1G series.
Can MMBZ5262BLT1G be used as a precision voltage reference in analog circuits?
MMBZ5262BLT1G can serve as a moderate-precision shunt reference in low-current applications (<2.5 mA), but its 1100 Ω dynamic impedance and ±5% voltage tolerance limit accuracy compared to dedicated reference ICs. It is best suited for non-critical biasing or overvoltage clamping rather than high-resolution ADC references - actual performance must be validated under target load and temperature conditions.
MMBZ5262BLT1G 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):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 125 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 39 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
MMBZ5262BLT1G FAQ
1.How can I place an order for MMBZ5262BLT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5262BLT1G 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 MMBZ5262BLT1G reliable?
The price and inventory of MMBZ5262BLT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5262BLT1G is usually 5 days.
3.What payment methods are accepted for MMBZ5262BLT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5262BLT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5262BLT1G?
MMBZ5262BLT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5262BLT1G 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 MMBZ5262BLT1G?
For technical support, including MMBZ5262BLT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5262BLT1G requirements.
6.How does Aetrix verify that MMBZ5262BLT1G is sourced from the original manufacturer or authorized distributors?
All MMBZ5262BLT1G 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 MMBZ5262BLT1G meets industry standards.
7.What is the process for return or replacement of MMBZ5262BLT1G?
All MMBZ5262BLT1G units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5262BLT1G, 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 MMBZ5262BLT1G part is unused and in its original packaging.
Return procedure for MMBZ5262BLT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5262BLT1G 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…
