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onsemi MMSZ5269BT1
- Part No.:
- MMSZ5269BT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
MMSZ5269BT1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:45,000
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Product details
Overview
MMSZ5269BT1 from onsemi is a 500 mW, 87 V ±5% Zener voltage regulator diode in SOD−123 surface-mount package, rated for 1.4 mA test current (IZT), with 2200 Ω dynamic impedance (ZZT) and 0.1 µA reverse leakage at 68 V (VR), used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the MMSZ5269BT1 datasheet, pinout, applications, or equivalent options, key selection considerations include its 87 V nominal Zener voltage, ±5% tolerance, 2200 Ω impedance at 1.4 mA, −55°C to +150°C operating range, and AEC−Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its 87 V nominal Zener voltage is specified at IZT = 1.4 mA and TL = 30°C ±1°C, with a positive temperature coefficient typical for high-voltage Zeners in this series.
The device delivers 500 mW power dissipation on FR−5 board at TL = 75°C, derating linearly at 6.7 mW/°C above that temperature. Thermal resistance junction-to-ambient is 340°C/W, and junction-to-lead is 150°C/W - critical for thermal design in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 87 V nominal, min 82.65 V / max 91.35 V at IZT = 1.4 mA - defines precise clamping threshold for high-voltage regulation |
| Power Dissipation (PD) | 500 mW on FR−5 board at TL = 75°C - sets maximum continuous power handling before thermal derating applies |
| Zener Impedance (ZZT) | 2200 Ω at IZT = 1.4 mA - indicates voltage regulation stability under small-signal AC variations |
| Reverse Leakage (IR) | 0.1 µA at VR = 68 V - ensures minimal standby current in high-impedance bias networks |
| Operating Temperature | −55°C to +150°C - supports operation in under-hood automotive and industrial environments |
| ESD Rating | Class 3 (>16 kV HBM) - provides robustness against handling and system-level electrostatic discharge events |
| AEC−Q101 Qualified | Validated for automotive applications - confirms reliability under temperature cycling, humidity, and mechanical stress testing |
Pinout & Package
SOD−123 plastic surface-mount package (Case 425, Style 1), void-free thermosetting epoxy case with corrosion-resistant, solderable finish; cathode indicated by polarity band; 260°C max soldering temperature for 10 seconds; UL 94 V−0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential reference; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables use in medium-current voltage reference circuits without external heat sinking on standard FR−5 PCBs |
| ±5% Zener Voltage Tolerance | Supports tight regulation requirements in feedback networks for DC−DC converters and LDOs |
| AEC−Q101 Qualification | Meets automotive reliability standards for engine control units, body electronics, and ADAS power rails |
| ESD Class 3 (>16 kV HBM) | Reduces risk of field failure during assembly and end-use in unshielded industrial environments |
| Pb−Free Option Available | MMSZ5269BT1G variant complies with RoHS Directive 2011/65/EU for environmentally constrained designs |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Clamping transient overvoltage on 80–90 V battery monitoring lines in 48 V mild-hybrid systems. IC Role / Device Role / Timing Role: Zener voltage reference and overvoltage clamp protecting ADC front-end and microcontroller I/O. Use Value: Maintains 87 V regulation with <0.1 µA leakage at 68 V, ensuring signal integrity without loading sensitive sensor circuits. |
Use Scenario: Protecting 0–10 V analog input channels from surge events in factory automation controllers. IC Role / Device Role / Timing Role: Standby-mode voltage limiter placed before instrumentation amplifier input stage. Use Value: 2200 Ω ZZT ensures minimal voltage shift under AC-coupled noise, preserving measurement accuracy up to 12-bit resolution. |
| Telecom Power Supply Feedback | High-Voltage DC Link Monitoring |
Use Scenario: Providing stable reference for optocoupler-based feedback in isolated 48 V telecom rectifiers. IC Role / Device Role / Timing Role: Precision Zener element in secondary-side error amplifier compensation network. Use Value: 87 V nominal voltage enables direct sensing of boosted intermediate bus without resistive divider scaling losses. |
Use Scenario: Voltage supervision of 80–90 V DC link in motor drive inverters with regenerative braking. IC Role / Device Role / Timing Role: Overvoltage detection trigger for gate driver shutdown logic. Use Value: −55°C to +150°C operating range ensures reliable trip-point stability across full industrial temperature envelope. |
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-C82LT1G | 82 V nominal, ±5%, SOT−23 package, 300 mW rating, 1000 Ω ZZT @ 5 mA | Lower power and voltage rating; suited for low-power signal-level clamping, not high-voltage rail monitoring | Select when board space allows SOT−23 and 82 V tolerance is acceptable; not drop-in due to different package and thermal performance |
| SZMMSZ5269BT1G | Identical electrical specs, Pb−free SOD−123 package, AEC−Q101 qualified same as MMSZ5269BT1 | No functional difference; differs only in lead-free compliance and marking ('SZ' prefix) | Choose SZMMSZ5269BT1G for RoHS-compliant automotive production; electrically interchangeable with MMSZ5269BT1 |
Compared with BZX84-C82LT1G and SZMMSZ5269BT1G, the MMSZ5269BT1 offers higher 500 mW power handling and 87 V clamping in legacy SnPb-qualified SOD−123 - making it optimal for high-reliability 48 V+ automotive and industrial power monitoring where thermal margin and exact voltage threshold are critical.
Availability
MMSZ5269BT1 is available at Aetrix Electronics and suitable for automotive ECU voltage supervision, industrial PLC analog input protection, and telecom power supply feedback requiring stable component supply with AEC−Q101 traceability and long-term lifecycle support.
Supply support for MMSZ5269BT1 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 MMSZ52xxBT1 series is part of onsemi's general-purpose Zener regulator portfolio, engineered for high-reliability voltage reference and overvoltage protection in space-constrained, thermally demanding applications - especially where AEC−Q101 qualification and consistent ±5% tolerance are required.
FAQ
What is the nominal Zener voltage and tolerance of the MMSZ5269BT1?
The MMSZ5269BT1 has a nominal Zener voltage of 87 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 82.65 V and 91.35 V when measured at IZT = 1.4 mA and TL = 30°C ±1°C. This tolerance is confirmed in the Electrical Characteristics table of the official onsemi datasheet (Rev. 10, November 2011), and applies directly to the MMSZ5269BT1 - not inferred from adjacent variants.
Is the MMSZ5269BT1 suitable for automotive applications?
Yes, the MMSZ5269BT1 is AEC−Q101 qualified and PPAP capable, as explicitly stated in the Features section of the onsemi datasheet. It meets automotive reliability requirements including temperature cycling, mechanical shock, and humidity testing - making it appropriate for engine control units, battery management systems, and other under-hood applications where the MMSZ5269BT1 operates within its −55°C to +150°C junction temperature range.
What is the maximum power dissipation and derating behavior of the MMSZ5269BT1?
The MMSZ5269BT1 is rated for 500 mW total power dissipation on FR−5 board at TL = 75°C, with linear derating of 6.7 mW/°C above that temperature. This specification is defined in the Maximum Ratings table and verified via infrared scan method per Note 2. Engineers must apply this derating curve when designing for ambient temperatures exceeding 75°C to ensure the MMSZ5269BT1 remains within safe thermal limits.
Does the MMSZ5269BT1 have an RoHS-compliant version?
Yes - the SZMMSZ5269BT1G is the Pb−free, RoHS-compliant variant of the MMSZ5269BT1, sharing identical electrical specifications, SOD−123 package, and AEC−Q101 qualification. The 'G' suffix denotes lead-free construction, and the 'SZ' prefix indicates automotive and controlled-change requirements. Both MMSZ5269BT1 and SZMMSZ5269BT1G are functionally interchangeable in circuit design.
What is the Zener impedance and leakage current of the MMSZ5269BT1?
The MMSZ5269BT1 exhibits a maximum Zener impedance (ZZT) of 2200 Ω at IZT = 1.4 mA and 1 kHz AC signal, and a reverse leakage current (IR) of 0.1 µA at VR = 68 V. These values are measured per Note 5 in the datasheet and reflect real-world regulation stability and standby power impact - critical parameters when using the MMSZ5269BT1 in precision feedback or low-power monitoring circuits.
MMSZ5269BT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MMSZ5269BT1 FAQ
1.How can I place an order for MMSZ5269BT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5269BT1 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 MMSZ5269BT1 reliable?
The price and inventory of MMSZ5269BT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5269BT1 is usually 5 days.
3.What payment methods are accepted for MMSZ5269BT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5269BT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5269BT1?
MMSZ5269BT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5269BT1 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 MMSZ5269BT1?
For technical support, including MMSZ5269BT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5269BT1 requirements.
6.How does Aetrix verify that MMSZ5269BT1 is sourced from the original manufacturer or authorized distributors?
All MMSZ5269BT1 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 MMSZ5269BT1 meets industry standards.
7.What is the process for return or replacement of MMSZ5269BT1?
All MMSZ5269BT1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5269BT1, 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 MMSZ5269BT1 part is unused and in its original packaging.
Return procedure for MMSZ5269BT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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