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onsemi MMBZ5260BLT1
- Part No.:
- MMBZ5260BLT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5260BLT1.pdf
- Description:
- DIODE ZENER 43V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
MMBZ5260BLT1 from onsemi is a 43 V ±5% Zener voltage regulator diode in SOT-23 package, rated for 225 mW power dissipation on FR-5 board, with 93 Ω maximum Zener impedance at 3 mA test current and 0.1 μA reverse leakage at 33 V. It serves as a precision voltage reference or overvoltage clamp in space-constrained portable electronics.
For engineers reviewing the MMBZ5260BLT1 datasheet, pinout, applications, or equivalent options, key selection criteria include its 43 V nominal Zener voltage, low 0.1 μA leakage at VR = 33 V, 93 Ω dynamic impedance at IZT = 3 mA, and AEC-Q101 qualification for automotive-grade reliability in compact SOT-23 footprint.
Technical Context
This device operates as a two-terminal, silicon planar Zener diode optimized for stable reverse-bias voltage regulation. Its design targets low-power, high-density applications where thermal resistance (556 °C/W on FR-5) and ESD robustness (>16 kV HBM) are critical.
The MMBZ5260BLT1 features a cathode-indicated polarity band, no internal connection on pin 2, and is specified for junction temperatures from −65 °C to +150 °C. It delivers predictable Zener behavior across ambient temperatures with a typical temperature coefficient near +10 mV/°C in the 40–50 V range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 40.85 V (min) to 45.15 V (max) at IZT = 3 mA - defines regulated output tolerance window |
| Power Dissipation (PD) | 225 mW on FR-5 board at 25 °C - sets maximum continuous DC power handling in standard PCB layout |
| Zener Impedance (ZZT) | 93 Ω max at IZT = 3 mA - determines regulation stiffness under small-signal load variation |
| Reverse Leakage (IR) | 0.1 μA max at VR = 33 V - ensures minimal quiescent current in standby/clamp modes |
| Thermal Resistance (RJA) | 556 °C/W on FR-5 board - quantifies junction-to-ambient heat rise per watt dissipated |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - supports robust handling in automated assembly and field environments |
| Junction Temp Range | −65 °C to +150 °C - enables operation in extended industrial and automotive under-hood conditions |
Pinout & Package
SOT-23 plastic surface-mount package (Case 318, Style 8), void-free thermosetting mold compound, corrosion-resistant finish, UL 94 V-0 flammability rating, and 260 °C / 10 s maximum soldering temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward current entry point; connected to lower-potential node in Zener clamp configuration |
| 2 | No Connection | Internally unconnected; must remain floating - not usable for routing or grounding |
| 3 | Cathode | Zener breakdown terminal; marked by polarity band; connects to regulated voltage rail |
Key Features
| Feature | Design Value |
|---|---|
| 225 mW FR-5 power rating | Enables use in battery-powered portables without heatsinking or derating penalties on standard PCBs |
| AEC-Q101 qualification | Validates reliability for automotive infotainment, body control, and ADAS subsystems requiring zero-failure tolerance |
| Pb-free (G-suffix) option available | Supports RoHS-compliant manufacturing and eliminates lead-based solder compatibility concerns |
| ESD >16 kV HBM | Reduces risk of assembly-line damage and field failures in handheld and wearable devices |
| Small SOT-23 footprint | Allows placement in <1.5 mm² board area - ideal for multi-rail voltage monitoring on dense mobile PCBs |
Applications
| Smartphone Power Rail Protection | Automotive Cabin Controller Reference |
|---|---|
|
Use Scenario: Clamping transient spikes on 3.3 V or 5 V USB interface lines during hot-plug events. IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as fast-acting overvoltage clamp. Use Value: Limits voltage excursion to ≤45.15 V before breakdown, protecting downstream PMIC inputs with sub-100 ns response. |
Use Scenario: Providing stable 43 V reference for analog sensor signal conditioning in HVAC control modules. IC Role / Device Role / Timing Role: Precision Zener voltage source for ADC biasing and op-amp feedback networks. Use Value: Delivers ±5% regulation accuracy across −40 °C to +125 °C, supporting ASIL-B functional safety requirements. |
| IoT Sensor Node Voltage Monitor | Industrial PLC Input Protection |
|
Use Scenario: Monitoring battery voltage decay in LPWA nodes using resistive divider + Zener threshold detection. IC Role / Device Role / Timing Role: Low-leakage (0.1 μA) Zener element enabling ultra-low-power wake-up circuitry. Use Value: Draws negligible current below 33 V, extending shelf life of coin-cell-powered edge sensors beyond 10 years. |
Use Scenario: Protecting 24 V digital input channels against surge-induced latch-up in factory automation controllers. IC Role / Device Role / Timing Role: Primary clamping device in TVS-assisted protection stage for IEC 61000-4-5 compliance. Use Value: Absorbs repetitive 1 A/100 ns transients without degradation, validated per AEC-Q101 stress profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C43LT1G | Same 43 V nominal Zener, but 350 mW rating on FR-4 and higher 100 Ω ZZT at 5 mA | Higher power handling suits 24 V industrial rails; less suitable for ultra-low-leakage battery monitoring | Select when higher surge energy absorption is required and board space allows larger thermal footprint |
| MMBZ5260BS | Identical electrical specs but in SOD-323 package (smaller, 1.3 × 0.8 mm vs. SOT-23's 2.9 × 1.3 mm) | Enables tighter layout in wearables; reduced thermal mass lowers transient thermal impedance | Choose for miniaturized designs where 556 °C/W RJA is acceptable and pick-and-place capability supports 0201-equivalent handling |
Compared with BZX84-C43LT1G and MMBZ5260BS, the MMBZ5260BLT1 offers optimal balance of AEC-Q101 qualification, 225 mW FR-5 power rating, and proven manufacturability in high-volume SOT-23 assembly - making it preferred for automotive and portable consumer designs requiring traceable reliability and consistent yield.
Availability
MMBZ5260BLT1 is available at Aetrix Electronics and suitable for smartphone power rail protection, automotive cabin controller reference, IoT sensor node voltage monitoring, and industrial PLC input protection requiring stable component supply and full lifecycle support.
Supply support for MMBZ5260BLT1 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMBZ52xxBLT1 series was engineered specifically for high-density, low-power voltage regulation in portable and automotive electronics - emphasizing AEC-Q101 reliability, SOT-23 manufacturability, and tight Zener voltage tolerances across temperature.
FAQ
What is the exact Zener voltage tolerance of MMBZ5260BLT1 at 25°C?
The MMBZ5260BLT1 has a guaranteed Zener voltage range of 40.85 V (minimum) to 45.15 V (maximum) at test current IZT = 3 mA and ambient temperature 25°C. This ±5% tolerance reflects the nominal 43 V rating and is verified per onsemi's production testing protocol for the MMBZ5260BLT1 series.
Does MMBZ5260BLT1 have a functional connection on pin 2?
No - pin 2 of the MMBZ5260BLT1 is internally not connected (NC). The device uses only pins 1 (anode) and 3 (cathode) for operation. Pin 2 must remain unconnected in PCB layout and schematic symbol to avoid unintended parasitic coupling or assembly defects.
Is MMBZ5260BLT1 qualified for automotive applications?
Yes - the MMBZ5260BLT1 is AEC-Q101 qualified and PPAP capable. This certification covers stress tests including high-temperature operating life, temperature cycling, and ESD, confirming suitability for automotive cabin electronics, body control modules, and non-safety-critical ADAS subsystems.
What is the maximum reverse leakage current for MMBZ5260BLT1?
The MMBZ5260BLT1 specifies a maximum reverse leakage current (IR) of 0.1 μA at VR = 33 V and TA = 25°C. This ultra-low leakage supports long-term battery operation in always-on monitoring circuits without measurable drain impact.
Can MMBZ5260BLT1 be used on FR-4 PCBs?
While the MMBZ5260BLT1 datasheet specifies 225 mW power dissipation on FR-5 board, it is commonly used on FR-4 with appropriate derating. Thermal performance on FR-4 is slightly reduced due to lower thermal conductivity; designers should verify junction temperature rise using actual layout and expected power dissipation for the MMBZ5260BLT1.
MMBZ5260BLT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 93 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 33 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)
MMBZ5260BLT1 FAQ
1.How can I place an order for MMBZ5260BLT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5260BLT1 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 MMBZ5260BLT1 reliable?
The price and inventory of MMBZ5260BLT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5260BLT1 is usually 5 days.
3.What payment methods are accepted for MMBZ5260BLT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5260BLT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5260BLT1?
MMBZ5260BLT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5260BLT1 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 MMBZ5260BLT1?
For technical support, including MMBZ5260BLT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5260BLT1 requirements.
6.How does Aetrix verify that MMBZ5260BLT1 is sourced from the original manufacturer or authorized distributors?
All MMBZ5260BLT1 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 MMBZ5260BLT1 meets industry standards.
7.What is the process for return or replacement of MMBZ5260BLT1?
All MMBZ5260BLT1 units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5260BLT1, 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 MMBZ5260BLT1 part is unused and in its original packaging.
Return procedure for MMBZ5260BLT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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