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onsemi MMSZ5272BT3
- Part No.:
- MMSZ5272BT3
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5272BT3.pdf
- Description:
- DIODE ZENER 110V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:7,727
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Product details
Overview
MMSZ5272BT3 from onsemi is a 5% tolerance, 110 V nominal Zener voltage regulator diode in SOD−123 surface-mount package, rated for 500 mW power dissipation on FR−5 board at 75°C, with 1.1 mA test current (IZT), 3000 Ω dynamic impedance (ZZT), and 0.1 µA reverse leakage at 84 V (VR). It serves as a precision voltage reference or overvoltage clamp in low-power analog power rails and sensor biasing circuits.
For engineers reviewing the MMSZ5272BT3 datasheet, pinout, applications, or equivalent options, key selection criteria include its 110 V Zener voltage tolerance, thermal equilibrium–specified VZ, SOD−123 footprint compatibility, and Class 3 ESD robustness (>16 kV HBM) in space-constrained industrial and automotive subsystems.
Technical Context
This device operates as a two-terminal silicon Zener diode, conducting in reverse breakdown to maintain stable voltage across its terminals when biased above VZ. Its Zener voltage is specified under thermal equilibrium conditions (TL = 30°C ±1°C), ensuring repeatable regulation independent of transient self-heating during measurement.
It exhibits a temperature coefficient of +0.115 mV/°C per volt (typical for 110 V devices), resulting in ~+12.7 mV/°C total drift, and supports steady-state operation from −55°C to +150°C junction temperature with derated power above 75°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 104.5 V min / 110 V nom / 115.5 V max @ IZT = 1.1 mA - defines regulated output voltage range under thermal equilibrium |
| Power Dissipation (PD) | 500 mW @ TL = 75°C - maximum continuous power before thermal shutdown on standard FR−5 PCB |
| Zener Impedance (ZZT) | 3000 Ω @ IZT = 1.1 mA - indicates voltage regulation stability under small-signal AC load variations |
| Reverse Leakage (IR) | 0.1 µA @ VR = 84 V - ensures minimal quiescent current draw below breakdown threshold |
| Junction Temp Range | −55°C to +150°C - enables use in under-hood automotive, industrial control, and outdoor power electronics |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling without external protection in manual assembly or field service |
Pinout & Package
SOD−123 plastic surface-mount package with cathode indicated by polarity band; dimensions: 2.84 mm × 1.35 mm × 0.94 mm (L × W × H); designed for automated pick-and-place and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point | Connected to higher potential node in reverse-bias configuration; polarity band identifies this terminal |
| 2 (Anode) | Zener cathode connection point | Connected to lower potential (typically ground or return path); completes reverse-bias circuit |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW FR−5 rating | Enables direct integration into compact 12 V–48 V auxiliary rails without heatsinking |
| ±5% VZ tolerance | Supports cost-sensitive applications where tight regulation is secondary to reliability and availability |
| Pb−Free SOD−123 package | Meets RoHS and ELV compliance; compatible with lead-free reflow profiles up to 260°C for 10 s |
| UL 94 V−0 flammability | Reduces fire risk in enclosed enclosures and safety-critical power modules |
Applications
| Industrial Sensor Biasing | Automotive Load Dump Protection |
|---|---|
Use Scenario: Providing stable 110 V reference for high-voltage current sensing amplifiers in motor drives. IC Role / Device Role / Timing Role: Zener voltage reference and clamping element in analog front-end signal conditioning. Use Value: Maintains <±1.5% output accuracy over −40°C to +125°C ambient due to thermal equilibrium VZ specification and low TC drift. | Use Scenario: Clamping transient spikes exceeding 84 V on 24 V vehicle battery lines during alternator load dump events. IC Role / Device Role / Timing Role: Standalone overvoltage protection device absorbing surge energy without active control. Use Value: Withstands non-repetitive 100 W surge pulses (per Figure 4) while limiting peak voltage to ≤115.5 V. |
| Programmable Power Supply Feedback | High-Voltage Reference Divider |
Use Scenario: Setting upper trip point in adjustable DC-DC converter feedback networks requiring >100 V reference. IC Role / Device Role / Timing Role: Precision voltage threshold generator in isolated error amplifier loops. Use Value: Delivers 110 V ±5% regulation with <3000 Ω dynamic impedance, minimizing feedback loop gain error. | Use Scenario: Generating accurate mid-rail voltage in 200 V DC bus monitoring systems using resistor divider + Zener stabilization. IC Role / Device Role / Timing Role: Voltage stabilizer compensating for resistor tolerance and temperature drift in high-ratio dividers. Use Value: Reduces divider output drift by >70% compared to unclamped resistive division at 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5272BT1G | Same electrical specs, but supplied in 3,000-piece tape-and-reel vs. 10,000-piece for MMSZ5272BT3 | Identical performance; preferred for prototyping or low-volume production | Select MMSZ5272BT1G when smaller reel size reduces inventory holding cost or matches line-side feeder constraints. |
| SZMMSZ5272BT3G | Automotive-grade variant: AEC−Q101 qualified, PPAP-capable, same Zener parameters and package | Required for automotive OEM designs needing certified component traceability and change control | Choose SZMMSZ5272BT3G only when automotive qualification documentation and site-specific control are contractually mandated. |
Compared with MMSZ5272BT3, the MMSZ5272BT1G offers identical regulation performance in a smaller reel format ideal for NPI, while SZMMSZ5272BT3G adds AEC−Q101 compliance-critical for Tier 1 automotive BOMs but unnecessary for industrial or consumer use.
Availability
MMSZ5272BT3 is available at Aetrix Electronics and suitable for industrial sensor biasing, automotive load dump protection, and high-voltage reference divider applications requiring stable component supply, long-term lifecycle support, and Pb−Free compliance.
Supply support for MMSZ5272BT3 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 delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMSZ52xxxT1G Series is designed for general-purpose, medium-current Zener regulation in space-constrained surface-mount applications, emphasizing thermal stability, ESD robustness, and broad voltage coverage from 2.4 V to 110 V.
FAQ
What is the Zener voltage tolerance of the MMSZ5272BT3?
The MMSZ5272BT3 has a ±5% tolerance on its nominal Zener voltage of 110 V, meaning its actual breakdown voltage falls between 104.5 V and 115.5 V when measured at IZT = 1.1 mA under thermal equilibrium conditions (TL = 30°C ±1°C). This tolerance is confirmed in the "5% TOLERANCE FG ELECTRICAL CHARACTERISTICS" table on page 3 of the official datasheet.
Does the MMSZ5272BT3 require a heatsink in typical operation?
No, the MMSZ5272BT3 does not require a heatsink in typical operation because its 500 mW power rating is specified for use on standard FR−5 PCBs with the minimum recommended footprint, and it operates within safe junction temperature limits (−55°C to +150°C) at ambient temperatures ≤75°C. Derating begins above 75°C at 6.7 mW/°C, making heatsinking unnecessary for most low-duty-cycle or low-ambient applications.
Is the MMSZ5272BT3 suitable for automotive applications?
The MMSZ5272BT3 itself is not AEC−Q101 qualified; however, its automotive-grade counterpart SZMMSZ5272BT3G shares identical electrical and mechanical specifications and is fully AEC−Q101 qualified and PPAP capable. For automotive designs requiring formal qualification, engineers must select SZMMSZ5272BT3G-not MMSZ5272BT3-to meet OEM compliance requirements.
What is the reverse leakage current specification for the MMSZ5272BT3?
The MMSZ5272BT3 specifies a maximum reverse leakage current (IR) of 0.1 µA at VR = 84 V, as stated in the "5% TOLERANCE FG ELECTRICAL CHARACTERISTICS" table. This low leakage ensures minimal standby power loss in high-impedance bias networks and maintains accuracy in precision reference applications where shunt current must be tightly controlled.
Can the MMSZ5272BT3 be used in place of the MMSZ5272BT1G?
Yes, the MMSZ5272BT3 can be used in place of the MMSZ5272BT1G because both share identical electrical characteristics, thermal ratings, package (SOD−123), and marking (R2). The only difference is packaging quantity: MMSZ5272BT1G ships in 3,000-piece reels, while MMSZ5272BT3 ships in 10,000-piece reels. No PCB or schematic changes are needed for substitution.
MMSZ5272BT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 110 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 750 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 84 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:
- SOD-123
MMSZ5272BT3 FAQ
1.How can I place an order for MMSZ5272BT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5272BT3 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 MMSZ5272BT3 reliable?
The price and inventory of MMSZ5272BT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5272BT3 is usually 5 days.
3.What payment methods are accepted for MMSZ5272BT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5272BT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5272BT3?
MMSZ5272BT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5272BT3 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 MMSZ5272BT3?
For technical support, including MMSZ5272BT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5272BT3 requirements.
6.How does Aetrix verify that MMSZ5272BT3 is sourced from the original manufacturer or authorized distributors?
All MMSZ5272BT3 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 MMSZ5272BT3 meets industry standards.
7.What is the process for return or replacement of MMSZ5272BT3?
All MMSZ5272BT3 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5272BT3, 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 MMSZ5272BT3 part is unused and in its original packaging.
Return procedure for MMSZ5272BT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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