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onsemi SZMMSZ5264BT1G
- Part No.:
- SZMMSZ5264BT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ5264BT1G.pdf
- Description:
- DIODE ZENER 60V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,011
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Product details
Overview
SZMMSZ5264BT1G from onsemi is a 60 V ±5% Zener diode in SOD−123 package, rated for 500 mW power dissipation at TL = 75°C, with 2.1 mA test current (IZT), 1400 Ω dynamic impedance (ZZT), and 46 V reverse voltage (VR) at 0.1 μA leakage - used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the SZMMSZ5264BT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal equilibrium operation, junction-to-lead thermal resistance (150 °C/W), and AEC−Q101 qualification for automotive use.
Technical Context
This device operates as a two-terminal voltage regulator diode with cathode-anode polarity, designed to maintain stable 60 V reverse breakdown under thermal equilibrium conditions (TL = 30°C ±1°C). It exhibits a temperature coefficient of +0.085 %/°C and supports steady-state derating from 500 mW at 75°C down to zero at 150°C ambient.
The SOD−123 package enables automated placement and reflow soldering up to 260°C for 10 seconds, with UL 94 V−0 flammability rating and ESD robustness >16 kV (HBM Class 3). Its 1.60 × 2.69 × 1.16 mm footprint suits high-density PCB layouts in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V nominal, min 57.0 V / max 63.0 V @ IZT = 2.1 mA - defines precise clamping threshold for 12 V–48 V system rail protection |
| Power Dissipation (PD) | 500 mW on FR−5 board @ TL = 75°C - sets maximum continuous power handling before thermal derating begins |
| Zener Impedance (ZZT) | 1400 Ω @ IZT = 2.1 mA - indicates voltage regulation stability under small-signal AC perturbation |
| Reverse Leakage (IR) | 0.1 μA @ VR = 46 V - ensures minimal standby current in high-impedance bias networks |
| Junction Temp Range | −55°C to +150°C - enables operation in under-hood automotive environments without derating |
| Thermal Resistance (RJL) | 150 °C/W - determines temperature rise from lead to junction during pulsed conduction |
Pinout & Package
SOD−123 surface-mount plastic package (Case 425, Style 1), 1.60 × 2.69 × 1.16 mm, void-free thermosetting material with corrosion-resistant finish and cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; reverse-biased to conduct at 60 V |
| 2 (Anode) | Reference/ground terminal | Tied to circuit common or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Pb−Free construction | RoHS-compliant packaging with no lead content, meeting global environmental regulations |
| ESD robustness | HBM Class 3 (>16 kV) - withstands electrostatic discharge during handling and assembly |
| Thermal equilibrium specification | Zener voltage measured at TL = 30°C ±1°C - ensures repeatable calibration across production lots |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing reference voltage for analog-to-digital converters monitoring throttle position and oxygen sensors. IC Role / Device Role / Timing Role: Zener voltage reference providing 60 V clamp to protect ADC input stages from transients on 12 V supply lines. Use Value: Maintains measurement accuracy by limiting input voltage excursions to within ±5% of 60 V, preventing ADC saturation during load dump events. | Use Scenario: Regulating bias voltage for 4–20 mA loop-powered pressure transmitters operating in harsh factory environments. IC Role / Device Role / Timing Role: Precision shunt regulator establishing stable 60 V rail for op-amp biasing and current source control. Use Value: Enables consistent 4–20 mA output linearity across −40°C to +125°C ambient due to low TC (+0.085 %/°C) and wide junction temperature range. |
| On-Board Charger (OBC) Auxiliary Supply | LED Driver Overvoltage Protection |
Use Scenario: Clamping transient spikes on auxiliary 12 V rail generated by switching regulators inside electric vehicle charging systems. IC Role / Device Role / Timing Role: Fast-response overvoltage protector absorbing surge energy during MOSFET switching transitions. Use Value: Limits peak voltage to ≤63 V (max VZ) during 100 ms load dump pulses, preserving downstream DC/DC controller ICs. | Use Scenario: Safeguarding constant-current LED driver ICs against bus voltage surges in architectural lighting systems. IC Role / Device Role / Timing Role: Shunt-based crowbar element diverting excess current when input voltage exceeds 60 V threshold. Use Value: Prevents catastrophic failure of LED driver ICs by clamping transients above 46 V (VR) with sub-μA leakage at normal operating voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5264BT1G | No SZ prefix; not AEC−Q101 qualified; same electrical specs and SOD−123 package | Intended for industrial/commercial use only; lacks automotive PPAP documentation | Select when automotive qualification is unnecessary and cost sensitivity is higher |
| BZX84-C62 | 62 V nominal, ±5% tolerance; SOT−23 package; 300 mW rating; 100 Ω ZZT @ 5 mA | Higher Zener voltage, lower power, smaller package - suited for low-power portable devices | Choose only if 62 V clamping is acceptable and board space is constrained beyond SOD−123 limits |
Compared with MMSZ5264BT1G and BZX84-C62, SZMMSZ5264BT1G uniquely combines AEC−Q101 qualification, 500 mW power capability, and 60 V precision clamping - making it the sole option for automotive-grade transient suppression where both reliability and exact voltage threshold are mandatory.
Availability
SZMMSZ5264BT1G is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, on-board charger auxiliary supply protection, and LED driver overvoltage safeguarding requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SZMMSZ5264BT1G 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 MMSZ52xxxT1G/SZMMSZ52xxxT1G series was developed specifically for high-reliability voltage regulation in automotive and industrial environments - emphasizing thermal stability, AEC−Q101 compliance, and surface-mount manufacturability in compact SOD−123 form factor.
FAQ
What is the Zener voltage tolerance of SZMMSZ5264BT1G?
SZMMSZ5264BT1G has a ±5% Zener voltage tolerance, meaning its reverse breakdown voltage is guaranteed between 57.0 V and 63.0 V when tested at IZT = 2.1 mA under thermal equilibrium conditions (TL = 30°C ±1°C). This tolerance is confirmed in the "5% TOLERANCE FG ELECTRICAL CHARACTERISTICS" table on page 3 of the official onsemi datasheet.
Is SZMMSZ5264BT1G suitable for automotive applications?
Yes, SZMMSZ5264BT1G is explicitly qualified to AEC−Q101 standards and designated with the "SZ" prefix to indicate compliance for automotive and other applications requiring unique site and process controls. It supports PPAP documentation and is rated for operation from −55°C to +150°C - making SZMMSZ5264BT1G appropriate for under-hood engine control, battery management, and ADAS subsystems.
What is the maximum power dissipation of SZMMSZ5264BT1G on a standard PCB?
SZMMSZ5264BT1G is rated for 500 mW total power dissipation on an FR−5 board at lead temperature (TL) = 75°C, with linear derating of 6.7 mW/°C above that temperature. This rating assumes minimum recommended footprint per onsemi's mechanical guidelines and does not apply to FR−4 boards unless validated separately.
How does the thermal resistance of SZMMSZ5264BT1G affect its performance?
SZMMSZ5264BT1G has a junction-to-lead thermal resistance (RJL) of 150 °C/W, meaning each watt of dissipated power raises the junction temperature by 150°C above the lead temperature. This parameter directly impacts safe operating area during transient surges and must be factored into layout design - especially when using narrow copper traces or limited thermal vias near the SOD−123 pads.
What is the reverse leakage current specification for SZMMSZ5264BT1G?
SZMMSZ5264BT1G specifies a reverse leakage current (IR) of 0.1 μA maximum at VR = 46 V, measured at TA = 25°C. This ultra-low leakage ensures minimal parasitic loading in high-impedance reference circuits and preserves accuracy in precision voltage monitoring applications where current draw must remain below 100 nA.
SZMMSZ5264BT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZMMSZ52xxxT1G
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 60 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 46 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
SZMMSZ5264BT1G FAQ
1.How can I place an order for SZMMSZ5264BT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ5264BT1G 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 SZMMSZ5264BT1G reliable?
The price and inventory of SZMMSZ5264BT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ5264BT1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ5264BT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ5264BT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ5264BT1G?
SZMMSZ5264BT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ5264BT1G 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 SZMMSZ5264BT1G?
For technical support, including SZMMSZ5264BT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ5264BT1G requirements.
6.How does Aetrix verify that SZMMSZ5264BT1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ5264BT1G 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 SZMMSZ5264BT1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ5264BT1G?
All SZMMSZ5264BT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ5264BT1G, 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 SZMMSZ5264BT1G part is unused and in its original packaging.
Return procedure for SZMMSZ5264BT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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