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onsemi MM5Z27VT1G
- Part No.:
- MM5Z27VT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z27VT1G.pdf
- Description:
- DIODE ZENER 27V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:11,990
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Product details
Overview
MM5Z27VT1G from onsemi is a 27 V, ±5% tolerance Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 80 Ω maximum Zener impedance at 2 mA test current and 0.05 µA reverse leakage at 21.4 V, used for precision voltage clamping in space-constrained portable electronics.
For engineers reviewing the MM5Z27VT1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, ESD robustness (Class 3, >16 kV HBM), and direct-fit alternatives for compact voltage regulation design.
Technical Context
This device operates as a two-terminal voltage reference diode with sharp reverse breakdown at nominal 27 V, specified under pulsed test conditions (IZT = 2 mA) to minimize self-heating effects. Its 250 °C/W junction-to-ambient thermal resistance and 0.7 mm body height enable thermal management in ultra-thin PCB layouts.
The MM5Z27VT1G exhibits a +0.05 %/°C temperature coefficient of VZ and 70 pF capacitance at 0 V bias and 1 MHz, making it suitable for low-noise DC biasing and transient suppression where parasitic reactance must remain below 100 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.1–28.9 V @ IZT = 2 mA; ensures stable clamping within ±5% across production lot |
| Power Dissipation | 500 mW @ TA = 25 °C; derates linearly to zero at 150 °C ambient on FR-4 board |
| Zener Impedance | 80 Ω max @ IZT = 2 mA; maintains tight regulation under dynamic load transients |
| Reverse Leakage | 0.05 µA max @ VR = 21.4 V; minimizes quiescent current in battery-powered systems |
| Capacitance | 70 pF @ VR = 0 V, f = 1 MHz; supports high-frequency noise filtering without signal distortion |
| ESD Rating | Class 3 (>16 kV) per HBM; withstands handling and assembly without protection circuitry |
| Package | SOD-523 (1.20 × 0.80 × 0.60 mm); fits 0402 footprint area with 0.7 mm profile for stacked modules |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band; total outline 1.20 mm × 0.80 mm × 0.60 mm, lead finish 100% matte tin, MSL 1 rated for 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage rail; reverse-biased during clamping operation |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential node; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free & RoHS compliant | Meets EU Directive 2011/65/EU; no lead contamination risk in recycling or assembly |
| Low-profile SOD-523 | 0.60 mm max height enables use under shields or in multi-layer flex assemblies |
| High ESD immunity | Withstands >16 kV human-body-model discharge without parameter shift or failure |
| Stable temperature coefficient | +0.05 %/°C ensures <±0.3 V drift over −40 to +85 °C operating range |
| Controlled marking & traceability | "12" device code + date code "M" enables full lot-level process traceability |
Applications
| Smartphone Power Rail Clamping | USB-C Port Overvoltage Protection |
|---|---|
|
Use Scenario: Protects 3.3 V and 5 V LDO outputs from transient surges during hot-plug events in mobile handsets. IC Role / Device Role / Timing Role: Two-terminal shunt regulator clamping voltage spikes above 27 V before they reach downstream PMIC inputs. Use Value: Prevents latch-up in buck converters by limiting input voltage to ≤28.9 V with sub-µA leakage at nominal rail. |
Use Scenario: Guards USB-C CC logic lines and VBUS detection circuits against ESD and accidental 12 V misconnection. IC Role / Device Role / Timing Role: Fast-response Zener clamp placed between CC pin and ground to absorb 15 kV HBM strikes without signal degradation. Use Value: Maintains 70 pF capacitance to avoid skewing 300 kHz CC communication timing while surviving >16 kV ESD. |
| Wearable Sensor Bias Reference | Industrial IoT Node Voltage Monitor |
|
Use Scenario: Provides stable 27 V reference for op-amp-based gas sensor excitation in compact hearables. IC Role / Device Role / Timing Role: Passive voltage reference source enabling ratiometric measurement with 0.05 µA leakage at 21.4 V. Use Value: Delivers ±5% accuracy over temperature with no active circuitry, reducing BOM count and standby power. |
Use Scenario: Monitors 24 V DC supply integrity in edge gateways using resistor-divider + comparator architecture. IC Role / Device Role / Timing Role: Precision Zener element in feedback network setting trip threshold at 27 V ±0.9 V. Use Value: Enables accurate undervoltage/overvoltage detection with 80 Ω dynamic impedance minimizing divider error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C27LT1G | Same 27 V nominal, ±5% tolerance, but SOD-323 package (1.7 × 1.3 × 0.9 mm); 100 mW lower power rating (400 mW) | Less suitable for high-power transient absorption; higher thermal resistance (312 °C/W) limits sustained clamping duty cycle | Select when board space allows larger footprint and peak power demand stays below 400 mW |
| MMSZ5258ET1G | 27 V nominal, ±5%, but SOD-123 package (3.7 × 1.6 × 1.1 mm); 500 mW rating with 100 Ω ZZT @ 20 mA | Higher Zener impedance degrades regulation under fast transients; larger size conflicts with ultra-dense layouts | Prefer for through-hole-compatible designs or where manual rework access is required |
Compared with BZX584C27LT1G and MMSZ5258ET1G, the MM5Z27VT1G offers the smallest footprint (SOD-523), lowest capacitance (70 pF), and best thermal performance (250 °C/W) for high-density, low-noise, and high-reliability portable applications.
Availability
MM5Z27VT1G is available at Aetrix Electronics and suitable for smartphone power rail clamping, USB-C port overvoltage protection, and wearable sensor bias reference requiring stable component supply with full traceability and Pb-free compliance.
Supply support for MM5Z27VT1G 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 semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM5Z27VT1G belongs to the MM5ZxxxT1G Zener regulator series designed specifically for ultra-compact voltage reference and transient suppression in handheld and wearables where board area and profile are constrained.
FAQ
What is the Zener voltage tolerance of MM5Z27VT1G?
The MM5Z27VT1G has a standard tolerance of ±5%, with a guaranteed reverse Zener voltage range of 25.1 V to 28.9 V at IZT = 2 mA and TA = 25 °C. This tolerance remains valid across the full operating temperature range of −65 °C to +150 °C, supported by its +0.05 %/°C temperature coefficient.
Does MM5Z27VT1G support automated SMT assembly?
Yes, MM5Z27VT1G is qualified for lead-free reflow soldering at peak temperatures up to 260 °C and meets MSL 1 moisture sensitivity level requirements. Its SOD-523 package uses 100% matte tin lead finish and is supplied in 3,000-piece tape-and-reel format (T1G variant), fully compatible with high-speed pick-and-place equipment.
How does MM5Z27VT1G perform under thermal stress?
MM5Z27VT1G has a junction-to-ambient thermal resistance of 250 °C/W on FR-4 board with 1 cm² copper pad. Its power dissipation derates linearly from 500 mW at 25 °C to zero at 150 °C ambient, enabling reliable operation in thermally dense environments such as stacked PCB modules or sealed enclosures.
Is MM5Z27VT1G suitable for automotive applications?
The SZMM5Z27VT1G variant is AEC-Q101 qualified and PPAP capable for automotive use, but the standard MM5Z27VT1G is not certified for automotive-grade reliability. For non-automotive portable and industrial applications, MM5Z27VT1G meets all functional and environmental specifications including Class 3 ESD and RoHS compliance.
What is the reverse leakage current specification for MM5Z27VT1G?
MM5Z27VT1G specifies a maximum reverse leakage current of 0.05 µA at VR = 21.4 V and TA = 25 °C. This ultra-low leakage ensures minimal impact on battery life in always-on wearable devices and preserves accuracy in high-impedance bias networks.
MM5Z27VT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±7%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 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:
- SOD-523
MM5Z27VT1G FAQ
1.How can I place an order for MM5Z27VT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z27VT1G 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 MM5Z27VT1G reliable?
The price and inventory of MM5Z27VT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z27VT1G is usually 5 days.
3.What payment methods are accepted for MM5Z27VT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z27VT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z27VT1G?
MM5Z27VT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z27VT1G 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 MM5Z27VT1G?
For technical support, including MM5Z27VT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z27VT1G requirements.
6.How does Aetrix verify that MM5Z27VT1G is sourced from the original manufacturer or authorized distributors?
All MM5Z27VT1G 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 MM5Z27VT1G meets industry standards.
7.What is the process for return or replacement of MM5Z27VT1G?
All MM5Z27VT1G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z27VT1G, 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 MM5Z27VT1G part is unused and in its original packaging.
Return procedure for MM5Z27VT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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