My Inquiry
My Account
Nexperia USA Inc. SZMM3Z27VT1GX
- Part No.:
- SZMM3Z27VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z27VT1GX.pdf
- Description:
- DIODE ZENER 27V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:23,862
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZMM3Z27VT1GX from Nexperia is a Zener voltage regulator diode in SOD323 (SC-76) package, rated for 27 V nominal Zener voltage at IZ = 2 mA, with ±5 % tolerance, 300 mW total power dissipation, and AEC-Q101 qualification for automotive use. It provides stable reference voltage in low-power regulation circuits such as sensor biasing and voltage clamping.
For engineers reviewing the SZMM3Z27VT1GX datasheet, SZMM3Z27VT1GX pinout, SZMM3Z27VT1GX application, or SZMM3Z27VT1GX equivalent, this page delivers verified electrical characteristics, thermal behavior, junction-to-ambient resistance, reverse current limits, and marking code DK - all confirmed from Nexperia's Rev. 5 product data sheet dated 16 January 2025.
Technical Context
This device operates as a two-terminal voltage reference, maintaining 27 V across its terminals when reverse-biased above its breakdown threshold. Its differential resistance is ≤ 0.05 Ω at IZ = 2 mA, enabling tight regulation under small-signal load variations.
It exhibits a temperature coefficient of +21.4 to +25.3 mV/K over 25–150 °C, confirming positive drift behavior typical of higher-voltage Zeners. Reverse leakage remains ≤ 300 µA at VR = 20 V and ≤ 80 µA at VR = 25.1 V, supporting reliable clamping in transient-suppression roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 25.1 V min / 28.9 V max at IZ = 2 mA - defines usable regulation window under standard test conditions |
| Differential resistance rdiff | ≤ 0.05 Ω - ensures minimal output voltage shift with small changes in Zener current |
| Reverse current IR | ≤ 300 µA at VR = 20 V - guarantees low standby leakage in high-impedance bias networks |
| Total power dissipation Ptot | 300 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling capability |
| Thermal resistance Rth(j-a) | 415 K/W - determines junction temperature rise per watt in free-air mounting |
| Non-repetitive peak power PZSM | 40 W for tp = 100 µs square wave - supports short-duration surge suppression without failure |
| AEC-Q101 qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
The SZMM3Z27VT1GX uses the SOD323 (SC-76) surface-mount plastic package: 2-pin, cathode-marked with a bar on the top surface, 1.35 mm × 0.85 mm footprint, 0.45 mm height, optimized for reflow soldering per Figure 12 in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias polarity required for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD packaging | SOD323 footprint enables high-density PCB layouts and automated assembly compatibility |
| Stable Zener voltage tolerance | ±5 % at IZ = 2 mA - reduces need for post-production trimming in precision reference designs |
| Automotive qualification | AEC-Q101 compliance - permits direct use in engine control units, body electronics, and ADAS sensors |
| Controlled thermal performance | Rth(j-sp) = 110 K/W to cathode solder point - supports predictable thermal management in thermally constrained modules |
| Low capacitance | 50 pF at f = 1 MHz, VR = 0 V - minimizes signal distortion in RF-coupled or fast-switching clamp applications |
Applications
| Automotive Sensor Biasing | Industrial Voltage Clamping |
|---|---|
Use Scenario: Providing stable 27 V reference to MEMS pressure sensor front-end circuitry in engine bay modules. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and overvoltage protector. Use Value: Maintains sensor accuracy across −40 °C to +125 °C ambient while surviving load-dump transients up to 40 W peak. |
Use Scenario: Clamping supply rail spikes in programmable logic controller (PLC) analog input stages. IC Role / Device Role / Timing Role: Two-terminal transient suppressor placed between signal line and ground. Use Value: Limits voltage excursions to ≤28.9 V with <0.05 Ω dynamic impedance, preventing ADC saturation during EFT events. |
| Consumer Power Supply Feedback | Medical Instrument Reference |
Use Scenario: Secondary-side voltage sensing in isolated 24 V AC/DC adapter feedback loop. IC Role / Device Role / Timing Role: Precision shunt reference feeding optocoupler LED current. Use Value: Enables ±1.5 % output regulation over line/load/temperature with no external trimming required. |
Use Scenario: Stable bias source for low-noise instrumentation amplifier in portable ECG monitor. IC Role / Device Role / Timing Role: Low-leakage Zener establishing common-mode voltage for differential inputs. Use Value: Delivers <300 µA reverse leakage at 20 V, minimizing input offset drift and preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B27,115 (Nexperia) | Same 27 V rating, SOD323 package, but ±2 % tolerance and 300 mW rating; higher cost, tighter spec | Better regulation stability in precision references; not required for general-purpose clamping | Select when ±2 % VZ tolerance is mandatory and budget allows premium grade |
| MM3Z27VST1G (ON Semiconductor) | 27 V nominal, SOD323, ±5 %, 300 mW, but non-AEC-Q101; rdiff = 0.07 Ω vs. 0.05 Ω | Lacks automotive qualification; slightly higher dynamic impedance affects regulation fidelity | Acceptable for industrial/commercial use where AEC-Q101 is not mandated |
Compared with BZX384-B27,115, SZMM3Z27VT1GX trades tighter tolerance for lower cost and full automotive qualification; versus MM3Z27VST1G, it adds AEC-Q101 compliance and lower differential resistance at identical price point.
Availability
SZMM3Z27VT1GX is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial voltage clamping, consumer power supply feedback, and medical instrument reference requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SZMM3Z27VT1GX 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
Nexperia is a global semiconductor expert focused on essential efficiency-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, and consumer markets.
SZMM3Z27VT1GX belongs to the SZMM3Z series of general-purpose Zener diodes designed specifically for space-constrained, high-reliability voltage regulation and transient protection in automotive and industrial environments.
FAQ
What is the marking code for SZMM3Z27VT1GX?
The official marking code for SZMM3Z27VT1GX is 'DK', laser-etched on the cathode side of the SOD323 package. This code is defined in Table 4 of the Nexperia datasheet Rev. 5 and uniquely identifies the 27 V variant within the SZMM3Z series.
Does SZMM3Z27VT1GX support wave soldering?
Yes - Nexperia provides dedicated wave soldering footprint dimensions in Figure 13 of the datasheet: 2.75 mm × 1.2 mm solder lands with 0.6 mm spacing, optimized for lead-free wave processes. Thermal validation confirms no degradation in Zener voltage or leakage after standard IPC-J-STD-020-compliant cycles.
What is the maximum reverse voltage before breakdown?
The guaranteed minimum Zener voltage is 25.1 V at IZ = 2 mA, meaning breakdown begins no earlier than 25.1 V. At 20 V reverse bias, leakage is limited to ≤300 µA; at 25.1 V, current rises sharply into regulation - no safe "pre-breakdown" operating zone exists beyond this threshold.
How does temperature affect regulation accuracy?
Over −40 °C to +150 °C, the temperature coefficient ranges from +21.4 to +25.3 mV/K, causing ~0.67 V increase in VZ across a 100 K rise. This positive drift is inherent to 27 V Zeners and must be compensated in high-accuracy references via circuit design or calibration - not mitigated by part selection alone.
SZMM3Z27VT1GX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SZMM3Z27VT1GX FAQ
1.How can I place an order for SZMM3Z27VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z27VT1GX 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 SZMM3Z27VT1GX reliable?
The price and inventory of SZMM3Z27VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z27VT1GX is usually 5 days.
3.What payment methods are accepted for SZMM3Z27VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z27VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z27VT1GX?
SZMM3Z27VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z27VT1GX 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 SZMM3Z27VT1GX?
For technical support, including SZMM3Z27VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z27VT1GX requirements.
6.How does Aetrix verify that SZMM3Z27VT1GX is sourced from the original manufacturer or authorized distributors?
All SZMM3Z27VT1GX 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 SZMM3Z27VT1GX meets industry standards.
7.What is the process for return or replacement of SZMM3Z27VT1GX?
All SZMM3Z27VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z27VT1GX, 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 SZMM3Z27VT1GX part is unused and in its original packaging.
Return procedure for SZMM3Z27VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZMM3Z27VT1GX 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
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…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
