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onsemi S1ZMBZ5234BLT1DG
- Part No.:
- S1ZMBZ5234BLT1DG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
S1ZMBZ5234BLT1DG.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:39,000
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Product details
Overview
S1ZMBZ5234BLT1DG from onsemi is a 6.2 V, 225 mW Zener diode in SOT-23 package, designed for precision voltage regulation and reference in space-constrained circuits. It delivers ±5% Zener voltage tolerance at 20 mA test current, exhibits 7 Ω dynamic impedance at IZT, and supports ≤5 µA reverse leakage at 4 V, making it suitable for low-power voltage clamping in portable power rails.
For engineers reviewing the S1ZMBZ5234BLT1DG datasheet, pinout, applications, or equivalent options, key selection criteria include its 6.2 V nominal Zener voltage, 225 mW FR-5 board power rating, 16 kV HBM ESD rating, SOT-23 pin-compatible footprint, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode-anode polarity, requiring no external biasing circuitry. Its Zener breakdown mechanism provides stable regulation across −65°C to +150°C junction temperature range, with temperature coefficient near zero at 6.2 V (≈0.002%/°C per typical data).
The SOT-23 package enables automated placement on high-density PCBs while maintaining thermal resistance of 556°C/W (Junction-to-Ambient on FR-5). Pin 2 is internally unconnected - only pins 1 (anode) and 3 (cathode) are electrically active, eliminating ambiguity in layout routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal at 20 mA - defines precise clamping threshold for overvoltage protection and reference generation |
| Power Dissipation | 225 mW on FR-5 board - sets maximum continuous regulation load without heatsinking |
| Zener Impedance (ZZT) | 7 Ω at 20 mA - ensures minimal output voltage deviation under varying load current |
| Reverse Leakage (IR) | ≤5 µA at 4 V - guarantees low standby current in battery-powered voltage monitor circuits |
| ESD Rating | Class 3 (>16 kV HBM) - enables robust handling in manual assembly and end-use environments |
| Operating Temperature | −65°C to +150°C - supports deployment in under-hood automotive and industrial control modules |
| Package | SOT-23 (Case 318, Style 8) - standard 3-pin surface-mount footprint compatible with high-speed pick-and-place equipment |
Pinout & Package
SOT-23 plastic surface-mount package with void-free thermosetting case, corrosion-resistant finish, and UL 94 V-0 flammability rating. Cathode identified by band marking; maximum soldering temperature 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-bias configuration; must be held at least 0.95 V below cathode to avoid forward conduction |
| 2 | No Connection | Internally isolated - no electrical function; must remain unconnected in PCB layout |
| 3 | Cathode | Connected to regulated voltage rail; polarity band aligns with this terminal for visual orientation |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free, Halogen-Free/BFR-Free | Meets RoHS Directive 2011/65/EU and automotive material compliance requirements |
| AEC-Q101 Qualified | Validated for automotive electronics use with PPAP documentation support |
| 225 mW FR-5 Power Rating | Enables direct integration into compact DC-DC feedback networks without derating penalties |
| Low Zener Impedance (7 Ω) | Maintains <±15 mV regulation shift across 5–25 mA load variation in reference designs |
| Zero-Temp-Coefficient Point | Optimized near 6.2 V - minimizes drift over temperature in precision analog sensing paths |
Applications
| Automotive Body Control Module | Portable Medical Sensor Supply |
|---|---|
Use Scenario: Regulating 5 V microcontroller I/O rail in door module exposed to load dump transients. IC Role / Device Role / Timing Role: Voltage clamp protecting MCU GPIOs from >20 V surges during alternator switching. Use Value: 6.2 V Zener threshold prevents latch-up while 225 mW rating absorbs transient energy without thermal runaway. |
Use Scenario: Providing stable reference for ADC in battery-powered pulse oximeter. IC Role / Device Role / Timing Role: Low-drift voltage reference source for 12-bit analog front-end calibration. Use Value: 7 Ω ZZT and near-zero TC ensure <±0.5 LSB error over −20°C to +70°C operating range. |
| Industrial PLC Input Protection | Consumer IoT Battery Monitor |
Use Scenario: Clamping 24 V field input signals before optocoupler isolation stage. IC Role / Device Role / Timing Role: Overvoltage limiter preventing damage to downstream logic-level translators. Use Value: 16 kV HBM ESD rating eliminates need for external TVS in cost-sensitive DIN-rail mount designs. |
Use Scenario: Monitoring Li-ion cell voltage via resistive divider with MCU internal ADC. IC Role / Device Role / Timing Role: Precision shunt reference enabling accurate state-of-charge estimation. Use Value: ≤5 µA leakage at 4 V ensures <1 µA total quiescent current in always-on battery monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V2 | 6.2 V ±5%, 300 mW rating, SOT-23 package, but not AEC-Q101 qualified | Lacks automotive qualification and 16 kV HBM ESD rating | Preferred for cost-sensitive consumer electronics where automotive reliability is not required |
| MMSZ5234ET1G | 6.2 V ±5%, 500 mW rating, same SOT-23 footprint, Pb-free, RoHS-compliant | Higher power dissipation allows greater surge absorption but larger thermal footprint | Selected when higher transient energy handling is needed without changing PCB layout |
Compared with S1ZMBZ5234BLT1DG, BZX84-C6V2 offers identical voltage regulation but lacks automotive qualification and ESD robustness, while MMSZ5234ET1G provides higher power margin at the expense of tighter thermal design constraints in space-limited applications.
Availability
S1ZMBZ5234BLT1DG is available at Aetrix Electronics and suitable for automotive body control modules, portable medical sensor supplies, industrial PLC input protection, and consumer IoT battery monitors requiring stable component supply with full traceability and lifecycle management.
Supply support for S1ZMBZ5234BLT1DG 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The MMBZ52xxBLT1G/SZMMBZ52xxBLT1G series was developed to deliver AEC-Q101-qualified, high-reliability Zener regulation in ultra-small SOT-23 packages for next-generation automotive ECUs and portable electronics.
FAQ
What is the Zener voltage tolerance of S1ZMBZ5234BLT1DG?
The S1ZMBZ5234BLT1DG has a Zener voltage tolerance of ±5% around its nominal 6.2 V rating, measured at 20 mA test current and 25°C ambient temperature. This tolerance remains valid across its full operating temperature range of −65°C to +150°C, as confirmed in the official onsemi datasheet revision 14.
Is S1ZMBZ5234BLT1DG pin-compatible with other SOT-23 Zener diodes?
Yes, S1ZMBZ5234BLT1DG uses standard SOT-23 (Style 8) pinout: Pin 1 = Anode, Pin 2 = No Connection, Pin 3 = Cathode. This matches industry-standard Zener footprints including BZX84-C6V2 and MMSZ5234ET1G, enabling direct layout reuse without redesign.
Does S1ZMBZ5234BLT1DG meet automotive qualification standards?
Yes, S1ZMBZ5234BLT1DG carries the "SZ" prefix indicating AEC-Q101 qualification and PPAP capability. It is specifically rated for automotive applications requiring enhanced reliability, including under-hood modules and body electronics subject to extended temperature cycling and vibration stress.
What is the maximum reverse leakage current for S1ZMBZ5234BLT1DG?
The maximum reverse leakage current for S1ZMBZ5234BLT1DG is 5 µA at 4 V reverse voltage and 25°C, as specified in the Electrical Characteristics table. At higher temperatures or voltages, leakage increases predictably - e.g., up to 10 µA at 70°C and 4 V - remaining well within design margins for low-power systems.
Can S1ZMBZ5234BLT1DG be used in place of MMBZ5234BLT1G?
Yes, S1ZMBZ5234BLT1DG is the automotive-grade variant of MMBZ5234BLT1G, sharing identical electrical specifications (6.2 V Zener, 7 Ω ZZT, 225 mW rating) and mechanical form factor. The "S1Z" prefix denotes enhanced process controls and AEC-Q101 validation, making it a drop-in replacement where automotive qualification is required.
S1ZMBZ5234BLT1DG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
S1ZMBZ5234BLT1DG FAQ
1.How can I place an order for S1ZMBZ5234BLT1DG through Aetrix?
Please submit a Request for Quotation (RFQ) for S1ZMBZ5234BLT1DG 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 S1ZMBZ5234BLT1DG reliable?
The price and inventory of S1ZMBZ5234BLT1DG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1ZMBZ5234BLT1DG is usually 5 days.
3.What payment methods are accepted for S1ZMBZ5234BLT1DG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1ZMBZ5234BLT1DG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1ZMBZ5234BLT1DG?
S1ZMBZ5234BLT1DG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1ZMBZ5234BLT1DG 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 S1ZMBZ5234BLT1DG?
For technical support, including S1ZMBZ5234BLT1DG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1ZMBZ5234BLT1DG requirements.
6.How does Aetrix verify that S1ZMBZ5234BLT1DG is sourced from the original manufacturer or authorized distributors?
All S1ZMBZ5234BLT1DG 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 S1ZMBZ5234BLT1DG meets industry standards.
7.What is the process for return or replacement of S1ZMBZ5234BLT1DG?
All S1ZMBZ5234BLT1DG units undergo pre-shipment inspection (PSI). If there is an issue with S1ZMBZ5234BLT1DG, 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 S1ZMBZ5234BLT1DG part is unused and in its original packaging.
Return procedure for S1ZMBZ5234BLT1DG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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