My Inquiry
My Account
onsemi MMSZ5V1T3G
- Part No.:
- MMSZ5V1T3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5V1T3G.pdf
- Description:
- DIODE ZENER 5.1V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,520
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ5V1T3G from onsemi is a 500 mW, 5.1 V ±5% Zener voltage regulator diode in SOD−123 surface-mount package, rated for 60 Ω dynamic impedance at 5 mA test current and 2 µA reverse leakage at 3.8 V, used for precision voltage reference and overvoltage protection in power supply rails and analog sensor interfaces.
For engineers reviewing the MMSZ5V1T3G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, AEC−Q101 qualification status, Pb−free compliance, and direct alternative options with documented parameter differences.
Technical Context
The MMSZ5V1T3G operates as a two-terminal shunt regulator, maintaining stable 5.1 V output across load variations by conducting reverse current above its Zener breakdown threshold. Its 60 Ω dynamic impedance (ZZT) at IZT = 5 mA ensures low voltage deviation under transient load shifts.
Thermal design is constrained by RJA = 340°C/W and junction temperature limits of −55°C to +150°C; power dissipation must be derated linearly above 75°C ambient (6.7 mW/°C), with maximum case soldering temperature of 260°C for 10 seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.85–5.36 V at IZT = 5 mA; nominal 5.1 V with ±5% tolerance defines regulation band for 3.3 V/5 V rail clamping. |
| Dynamic Impedance (ZZT) | 60 Ω max at IZT = 5 mA; determines output voltage variation under 1 mA load step (ΔV ≈ 60 mV). |
| Reverse Leakage (IR) | 2 µA max at VR = 3.8 V; ensures minimal quiescent current draw in standby mode of low-power circuits. |
| Power Dissipation (PD) | 500 mW on FR−5 board at TL = 75°C; sets absolute upper limit for continuous Zener conduction without thermal runaway. |
| Thermal Resistance (RJA) | 340°C/W; requires ≥100 mm² copper pour for safe operation at full power in industrial ambient conditions. |
| Junction Temp Range | −55°C to +150°C; supports automotive under-hood and industrial control applications without derating. |
| ESD Rating | Class 3 (>16 kV HBM); eliminates need for external ESD protection in handheld and field-deployed equipment. |
Pinout & Package
SOD−123 plastic surface-mount package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish, cathode indicated by polarity band, UL 94 V−0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased during Zener operation; carries full Zener current. |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower-potential rail; completes current path during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables robust overvoltage clamping in 5 V systems without external heat sinking on standard PCBs. |
| AEC−Q101 Qualified | Validated for automotive electronics including body control modules and infotainment power domains. |
| Pb−Free Packaging | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profiles. |
| ESD Class 3 (>16 kV HBM) | Withstands electrostatic discharge events common in assembly, test, and end-user handling environments. |
| Small SOD−123 Footprint | Supports high-density layout in space-constrained IoT sensors and portable medical devices. |
Applications
| USB Power Rail Protection | Industrial Sensor Reference |
|---|---|
Use Scenario: Clamps transient surges on 5 V USB VBUS lines during hot-plug or ESD events. IC Role / Device Role / Timing Role: Shunt regulator providing low-impedance path to ground above 5.36 V. Use Value: Prevents damage to downstream USB controllers by limiting peak voltage to ≤5.36 V with <60 Ω dynamic impedance. | Use Scenario: Supplies stable 5.1 V reference for 12-bit ADCs in factory-floor temperature transmitters. IC Role / Device Role / Timing Role: Precision voltage reference source with ±5% tolerance and low tempco (≈2 mV/°C near 5 V). Use Value: Enables <±0.5% full-scale accuracy in analog signal conditioning without trimming resistors. |
| Automotive Lighting Control | Consumer Audio Bias Supply |
Use Scenario: Regulates gate drive voltage for LED driver MOSFETs in headlamp modules. IC Role / Device Role / Timing Role: Zener clamp stabilizing 5 V logic supply derived from 12 V battery via LDO dropout margin. Use Value: Maintains functional integrity across −40°C to +125°C ambient per AEC−Q101 qualification. | Use Scenario: Generates clean bias voltage for op-amp input stages in battery-powered headphones. IC Role / Device Role / Timing Role: Low-leakage (2 µA max) shunt reference minimizing battery drain in sleep mode. Use Value: Extends shelf life and operational runtime by reducing quiescent current vs. linear regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V1 | Same 5.1 V nominal, but ±1% tolerance and 100 mW rating; SOD-323 package (smaller, higher thermal resistance). | Higher precision required in metrology-grade references; unsuitable for >100 mW continuous dissipation. | Select when tighter voltage tolerance outweighs power capability and thermal performance. |
| 1N4733A | 5.1 V ±5%, but through-hole DO-41 package; 1 W rating; no AEC−Q101 or Pb−free certification. | Legacy designs requiring axial-lead replacement; not suitable for automated SMT production or automotive use. | Select only for prototyping or repair of legacy boards where SMT compatibility is not required. |
Compared with BZX584C5V1 and 1N4733A, the MMSZ5V1T3G uniquely balances SMT manufacturability, 500 mW power handling, AEC−Q101 qualification, and industry-standard ±5% tolerance - making it optimal for volume automotive and industrial power management designs.
Availability
MMSZ5V1T3G is available at Aetrix Electronics and suitable for USB power protection, industrial sensor reference, automotive lighting control, and consumer audio bias supply requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for MMSZ5V1T3G 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 (Semiconductor Components Industries, LLC) is a global supplier of energy-efficient semiconductor solutions, serving automotive, industrial, cloud, medical, and IoT markets with differentiated silicon and packaging technologies.
The MMSZxxxT1G Series was designed specifically for surface-mount voltage regulation in space-constrained, high-volume applications demanding AEC−Q101 reliability, Pb−free compliance, and consistent Zener performance across −55°C to +150°C.
FAQ
What is the Zener voltage tolerance of the MMSZ5V1T3G?
The MMSZ5V1T3G has a nominal Zener voltage of 5.1 V with a standard tolerance of ±5%, resulting in a guaranteed range of 4.85 V to 5.36 V at IZT = 5 mA and TA = 25°C. This tolerance is specified per onsemi's datasheet revision 13 and applies across the full operating temperature range when derated per thermal curves.
Is the MMSZ5V1T3G suitable for automotive applications?
Yes, the MMSZ5V1T3G is AEC−Q101 qualified and PPAP capable, confirming its suitability for automotive applications such as body electronics, lighting control, and infotainment power domains. It meets stringent reliability, thermal, and ESD requirements defined in the AEC−Q101 stress test standard.
What is the maximum reverse leakage current for the MMSZ5V1T3G?
The MMSZ5V1T3G exhibits a maximum reverse leakage current of 2 µA at VR = 3.8 V and TA = 25°C. This low leakage supports energy-sensitive applications like battery-backed sensors and always-on monitoring circuits where standby current must remain below microampere thresholds.
Does the MMSZ5V1T3G have Pb−free packaging?
Yes, the "G" suffix in MMSZ5V1T3G explicitly denotes Pb−free packaging compliant with RoHS Directive 2011/65/EU. The device uses lead-free terminations and conforms to JEDEC J-STD-020 moisture sensitivity and reflow profile standards.
How does thermal derating affect the MMSZ5V1T3G's power dissipation?
The MMSZ5V1T3G is rated for 500 mW at TL = 75°C on FR−5 board, with linear derating of 6.7 mW/°C above that temperature. At 105°C board temperature, usable power drops to 283 mW - a critical constraint for enclosed industrial enclosures or under-hood automotive locations.
MMSZ5V1T3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 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
MMSZ5V1T3G FAQ
1.How can I place an order for MMSZ5V1T3G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5V1T3G 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 MMSZ5V1T3G reliable?
The price and inventory of MMSZ5V1T3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5V1T3G is usually 5 days.
3.What payment methods are accepted for MMSZ5V1T3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5V1T3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5V1T3G?
MMSZ5V1T3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5V1T3G 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 MMSZ5V1T3G?
For technical support, including MMSZ5V1T3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5V1T3G requirements.
6.How does Aetrix verify that MMSZ5V1T3G is sourced from the original manufacturer or authorized distributors?
All MMSZ5V1T3G 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 MMSZ5V1T3G meets industry standards.
7.What is the process for return or replacement of MMSZ5V1T3G?
All MMSZ5V1T3G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5V1T3G, 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 MMSZ5V1T3G part is unused and in its original packaging.
Return procedure for MMSZ5V1T3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ5V1T3G 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…
