My Inquiry
My Account
Nexperia USA Inc. SZMM5Z12VT5GF
.jpg)
- Part No.:
- SZMM5Z12VT5GF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z12VT5GF.pdf
- Description:
- DIODE ZENER 12V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:15,973
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZMM5Z12VT5GF from Nexperia is a 12 V ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, with 11.76–12.24 V nominal Zener voltage at IZ = 5 mA, 0.1 Ω typical differential resistance, and AEC-Q101 qualification for automotive voltage regulation.
For engineers reviewing the SZMM5Z12VT5GF datasheet, SZMM5Z12VT5GF pinout, SZMM5Z12VT5GF application, or SZMM5Z12VT5GF equivalent, this device serves as a precision low-power shunt regulator in space-constrained automotive and industrial circuits where stable reference voltage, low thermal resistance (65 K/W junction-to-solder-point), and surge resilience are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 12 V reference across load variations, with tight ±2 % tolerance and low 0.1 Ω differential resistance ensuring minimal voltage drift under dynamic current conditions. Its AEC-Q101 qualification confirms robustness against automotive-grade thermal cycling, humidity, and mechanical stress.
The SOD523 package enables high-density PCB layouts while delivering 65 K/W junction-to-solder-point thermal resistance-critical for maintaining Tj ≤ 150 °C during transient surges up to 40 W (100 µs square wave). Forward voltage remains ≤1.1 V at 100 mA, supporting bidirectional protection and biasing roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.76–12.24 V at IZ = 5 mA - defines precise regulation window for 12 V rail stabilization |
| Tolerance | ±2 % - ensures predictable voltage accuracy without post-production trimming |
| Differential Resistance (rdiff) | 0.1 Ω max - minimizes output voltage variation under load current changes |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 with 35 mm² cathode copper - sets continuous thermal operating limit |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 µs - supports transient overvoltage clamping in ESD/surge events |
| Junction Temperature (Tj) | −55 °C to +150 °C - enables operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling |
Pinout & Package
Package: SOD523 (SC-79), ultra-small flat-lead surface-mount plastic package (1.25 × 0.85 × 0.65 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated voltage node; marking bar identifies this terminal; carries reverse breakdown current |
| 2 (A) | Anode | Connected to ground or lower-potential reference; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-compact SOD523 footprint | Enables placement in <1.0 mm² board area-ideal for space-critical ADAS sensors and ECUs |
| Low differential resistance (0.1 Ω) | Reduces Zener voltage shift to <0.5 mV per 5 mA load change-critical for precision references |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, lighting, and infotainment power rails |
| 40 W surge capability | Clamps fast transients (e.g., ISO 7637-2 pulse 1/2a) without degradation-reduces need for external TVS |
| −55 °C to +150 °C operating range | Supports full automotive ambient range without derating-no thermal margin loss in hot under-hood zones |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Regulating 12 V supply for microcontroller reset circuitry and CAN transceiver bias in BCMs. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 12 V threshold for POR and brown-out detection. Use Value: ±2 % tolerance and 0.1 Ω rdiff ensure reset assertion occurs within 11.8–12.2 V-preventing spurious reboots during battery fluctuations. |
Use Scenario: Establishing precision reference for 4–20 mA loop transmitter DAC output stage. IC Role / Device Role / Timing Role: Zener-based voltage reference for op-amp feedback network in current-output amplifier. Use Value: Low 65 K/W Rth(j-sp) maintains stable VZ despite PCB trace heating-reducing output current drift to <0.02 %/°C. |
| USB-C Power Delivery Monitoring | Smart Lighting Driver Feedback |
|
Use Scenario: Clamping and referencing VBUS sense line in USB-C PD source controllers. IC Role / Device Role / Timing Role: Overvoltage clamp and reference generator for ADC input scaling of 5–20 V VBUS. Use Value: 40 W PZSM absorbs 100 µs ESD pulses per IEC 61000-4-2 Level 4-eliminating need for separate TVS diode. |
Use Scenario: Setting feedback threshold for constant-current LED driver IC in automotive headlamps. IC Role / Device Role / Timing Role: Zener reference in current-sense amplifier gain-setting network. Use Value: AEC-Q101 qualification ensures no parametric shift after 1000-hour HTOL testing-maintaining lumen consistency over 15-year vehicle life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C12 | Same 12 V ±2 %, but SOD323 package (larger: 1.7 × 1.3 mm); 500 mW Ptot; no AEC-Q101 rating | Higher power handling but unsuitable for AEC-compliant designs; requires more PCB area | Select only if higher continuous dissipation is needed and automotive qualification is not required |
| MMSZ5242B | 12 V ±5 % tolerance; SOD123 package (2.7 × 1.4 mm); 500 mW Ptot; no AEC-Q101 | Looser tolerance increases reference uncertainty; larger footprint limits high-density layouts | Choose only for cost-sensitive industrial applications where ±5 % regulation is acceptable |
Compared with BZX584C12 and MMSZ5242B, SZMM5Z12VT5GF delivers tighter tolerance, smaller footprint, and automotive qualification-making it optimal for next-generation compact, safety-critical systems where board space and reliability are non-negotiable.
Availability
SZMM5Z12VT5GF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor signal chains, USB-C power monitoring, and smart LED lighting requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SZMM5Z12VT5GF 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 leading Dutch semiconductor manufacturer specializing in high-performance, high-reliability discrete and logic devices, with global R&D and manufacturing facilities.
SZMM5Z series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage reference and clamping in space-constrained, thermally demanding environments.
FAQ
What is the maximum continuous forward current for SZMM5Z12VT5GF?
The device supports up to 200 mA forward current per Absolute Maximum Ratings. However, its primary function is reverse-bias Zener regulation; forward conduction is limited to ≤1.1 V at 100 mA and is typically used only for polarity verification or dual-role protection circuits-not sustained forward operation.
Does SZMM5Z12VT5GF require a heatsink for 300 mW operation?
No external heatsink is required. At 300 mW dissipation on an FR4 PCB with ~35 mm² copper at the cathode pad, junction temperature stays within 150 °C limit due to 65 K/W junction-to-solder-point thermal resistance. Board-level copper area is the sole thermal path.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
At 12 V nominal, the temperature coefficient is +6.0 to +10.0 mV/K (per Table 8). Over −40 °C to +125 °C (165 K span), VZ drift is approximately +0.99 V to +1.65 V-i.e., regulation shifts from ~10.8 V to ~13.7 V. System design must accommodate this range in reference-critical paths.
Can SZMM5Z12VT5GF replace older SMA/Zener packages in existing designs?
Direct replacement is possible only with layout revision: SOD523 (1.25 × 0.85 mm) is significantly smaller than SMA (4.5 × 2.7 mm) or DO-35 (4.5 × 2.0 mm). Pad geometry, solder stencil, and reflow profile must be updated; electrical behavior is compatible, but thermal and mechanical mounting differ substantially.
SZMM5Z12VT5GF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-523
SZMM5Z12VT5GF FAQ
1.How can I place an order for SZMM5Z12VT5GF through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z12VT5GF 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 SZMM5Z12VT5GF reliable?
The price and inventory of SZMM5Z12VT5GF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z12VT5GF is usually 5 days.
3.What payment methods are accepted for SZMM5Z12VT5GF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z12VT5GF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z12VT5GF?
SZMM5Z12VT5GF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z12VT5GF 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 SZMM5Z12VT5GF?
For technical support, including SZMM5Z12VT5GF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z12VT5GF requirements.
6.How does Aetrix verify that SZMM5Z12VT5GF is sourced from the original manufacturer or authorized distributors?
All SZMM5Z12VT5GF 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 SZMM5Z12VT5GF meets industry standards.
7.What is the process for return or replacement of SZMM5Z12VT5GF?
All SZMM5Z12VT5GF units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z12VT5GF, 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 SZMM5Z12VT5GF part is unused and in its original packaging.
Return procedure for SZMM5Z12VT5GF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZMM5Z12VT5GF 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…
