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onsemi MMBZ5236B_D87Z
- Part No.:
- MMBZ5236B_D87Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5236B_D87Z.pdf
- Description:
- DIODE ZENER 7.5V 350MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,838
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Product details
Overview
MMBZ5236B_D87Z from Fairchild Semiconductor is a 7.5 V, ±5% tolerance Zener diode in SOT-23 package, rated for 350 mW power dissipation, with 6.0 Ω dynamic impedance at 20 mA test current and 500 µA reverse leakage at 3.0 V. It provides precise voltage regulation in low-power biasing and reference circuits.
For engineers reviewing the MMBZ5236B_D87Z datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, dynamic impedance at nominal test current, reverse leakage at specified VR, thermal stability across -55°C to +150°C, and SOT-23 footprint compatibility with automated assembly.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable DC voltage under varying load or supply conditions. Its 7.5 V nominal zener voltage is specified at 20 mA test current, with 6.0 Ω dynamic impedance indicating low AC resistance near regulation point.
Thermal performance is defined by a maximum junction temperature of +150°C and storage range from -55°C to +150°C. Forward voltage is capped at 0.9 V at 10 mA, confirming standard silicon PN junction behavior for bidirectional use in clamping or dual-purpose bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V ±5% at IZ = 20 mA - defines primary regulation setpoint with tight tolerance for precision references |
| Dynamic Impedance (ZZ) | 6.0 Ω @ 20 mA - indicates low AC resistance enabling stable output under small-signal load variations |
| Reverse Leakage (IR) | 500 µA @ VR = 3.0 V - quantifies off-state conduction affecting high-impedance bias networks |
| Power Dissipation (PD) | 350 mW - sets maximum continuous thermal limit in SOT-23 package without derating |
| Forward Voltage (VF) | ≤0.9 V @ IF = 10 mA - confirms usable forward conduction for dual-direction protection or level-shifting |
| Operating Temperature | -55°C to +150°C - supports industrial and automotive ambient environments without external heatsinking |
Pinout & Package
SOT-23 plastic surface-mount package with three terminals; Pin 1 (anode), Pin 2 (cathode), Pin 3 (not connected). Standard JEDEC MO-215 outline with 0.95 mm pitch and 2.9 mm × 1.3 mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Forward current entry / reverse breakdown cathode connection when used in standard orientation |
| Pin 2 | Cathode | Forward current exit / reverse breakdown anode connection; tied to regulated voltage node |
| Pin 3 | NC | No internal connection; electrically isolated, may be left floating or grounded per layout requirements |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener Voltage Tolerance | Enables predictable regulation without post-production trimming in cost-sensitive consumer and industrial designs |
| Low Dynamic Impedance (6.0 Ω) | Minimizes output voltage variation under transient load changes in feedback or reference paths |
| SOT-23 Package Compatibility | Supports high-density PCB layouts and reflow-compatible automated assembly with standard pick-and-place equipment |
| 150°C Maximum Junction Temperature | Allows operation in thermally constrained enclosures without forced cooling or derating penalties |
Applications
| Voltage Reference for Op-Amp Biasing | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Providing stable 7.5 V reference to bias input stages of rail-to-rail op-amps in battery-powered instrumentation. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing DC operating point independent of supply fluctuations. Use Value: Maintains amplifier offset stability within ±1.5 mV over temperature due to tight 7.5 V ±5% tolerance and low ZZ. | Use Scenario: Protecting 3.3 V ADC inputs from ESD transients or supply overshoot in automotive cabin sensors. IC Role / Device Role / Timing Role: Reverse-biased shunt clamp diverting excess energy above 7.5 V to ground before reaching sensitive analog front-end. Use Value: Limits peak voltage to ≤7.5 V + IPP × ZZ, leveraging 6.0 Ω impedance to suppress fast transients below damage threshold. |
| Low-Power Microcontroller Reset Circuit | Current-Limited LED Bias Network |
Use Scenario: Generating clean reset signal for 32-bit MCUs during brown-out conditions using RC delay and zener-triggered transistor switch. IC Role / Device Role / Timing Role: Threshold detector setting turn-on voltage for reset generation logic via comparator or discrete transistor gate. Use Value: Ensures deterministic reset assertion at 7.5 V ±0.375 V, eliminating false triggers caused by supply ripple or noise. | Use Scenario: Setting constant current for indicator LEDs in industrial HMI panels where supply varies between 9–12 V. IC Role / Device Role / Timing Role: Shunt regulator maintaining fixed voltage drop across series resistor to stabilize LED current. Use Value: Delivers ±3% LED brightness consistency across input voltage range, enabled by 6.0 Ω ZZ and 500 µA IR at 3.0 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same 7.5 V ±5%, but 15 Ω ZZ @ 5 mA; 300 mW rating; SOT-23 package | Higher dynamic impedance reduces regulation accuracy under dynamic loads; lower power rating limits sustained current handling | Select when cost sensitivity outweighs regulation precision and thermal margin is sufficient |
| MMBZ5236BS | Identical electrical specs; same SOT-23 package; RoHS-compliant variant with matte tin lead finish | No functional difference; intended for lead-free assembly processes requiring Pb-free solder compatibility | Choose for new designs targeting RoHS compliance and lead-free reflow profiles |
Compared with BZX84-C7V5 and MMBZ5236BS, the MMBZ5236B_D87Z offers superior regulation stability (6.0 Ω vs. 15 Ω) and higher thermal margin (350 mW vs. 300 mW), while MMBZ5236BS serves as a direct RoHS-compliant replacement without electrical trade-offs.
Availability
MMBZ5236B_D87Z is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, reset circuitry, and LED biasing applications requiring stable component supply and long-term manufacturability.
Supply support for MMBZ5236B_D87Z 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
Fairchild Semiconductor was a U.S.-based semiconductor manufacturer specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.
The MMBZ52xxB series was designed for general-purpose voltage regulation and transient suppression in space-constrained, low-power electronic systems across industrial, computing, and consumer markets.
FAQ
What is the zener voltage tolerance of MMBZ5236B_D87Z?
The MMBZ5236B_D87Z has a zener voltage tolerance of ±5% at 7.5 V, meaning its actual breakdown voltage falls between 7.125 V and 7.875 V when tested at 20 mA. This tolerance is guaranteed across the full operating temperature range and is critical for applications requiring predictable regulation thresholds. The MMBZ5236B_D87Z maintains this specification under standard JEDEC test conditions without requiring binning or calibration.
Can MMBZ5236B_D87Z be used in forward conduction mode?
Yes, the MMBZ5236B_D87Z supports forward conduction with a maximum forward voltage of 0.9 V at 10 mA, consistent with standard silicon PN junction behavior. This allows bidirectional use in circuits such as dual-rail clamps or level-shifters where both forward and reverse characteristics are leveraged. The MMBZ5236B_D87Z does not require special biasing for forward operation and behaves predictably up to its absolute maximum ratings.
What is the maximum power dissipation for MMBZ5236B_D87Z?
The MMBZ5236B_D87Z has a maximum power dissipation of 350 mW at 25°C ambient temperature, as defined in its Absolute Maximum Ratings table. Derating is required above 25°C at 2.33 mW/°C, reaching zero dissipation at +150°C junction temperature. This rating applies to the SOT-23 package and must be respected to avoid thermal runaway or permanent degradation of the MMBZ5236B_D87Z.
How does the dynamic impedance of MMBZ5236B_D87Z affect regulation performance?
The MMBZ5236B_D87Z exhibits 6.0 Ω dynamic impedance at 20 mA, meaning its incremental resistance in breakdown is low enough to minimize output voltage deviation under small load current changes. For example, a 1 mA load step causes only ~6 mV shift in regulated voltage. This characteristic makes the MMBZ5236B_D87Z suitable for precision biasing where stability under dynamic conditions is essential.
Is MMBZ5236B_D87Z compatible with lead-free reflow soldering?
The MMBZ5236B_D87Z uses standard matte tin plating and is rated for peak reflow temperatures up to 260°C per JEDEC J-STD-020, making it compatible with lead-free soldering processes. Its SOT-23 package withstands standard IPC-A-610 Class 2 thermal profiles without delamination or parametric shift. The MMBZ5236B_D87Z meets RoHS requirements when sourced from authorized distributors with valid material declarations.
MMBZ5236B_D87Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MMBZ5236B_D87Z FAQ
1.How can I place an order for MMBZ5236B_D87Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5236B_D87Z 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 MMBZ5236B_D87Z reliable?
The price and inventory of MMBZ5236B_D87Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5236B_D87Z is usually 5 days.
3.What payment methods are accepted for MMBZ5236B_D87Z?
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4.How is shipping managed for MMBZ5236B_D87Z?
MMBZ5236B_D87Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5236B_D87Z 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 MMBZ5236B_D87Z?
For technical support, including MMBZ5236B_D87Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5236B_D87Z requirements.
6.How does Aetrix verify that MMBZ5236B_D87Z is sourced from the original manufacturer or authorized distributors?
All MMBZ5236B_D87Z 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 MMBZ5236B_D87Z meets industry standards.
7.What is the process for return or replacement of MMBZ5236B_D87Z?
All MMBZ5236B_D87Z units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5236B_D87Z, 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 MMBZ5236B_D87Z part is unused and in its original packaging.
Return procedure for MMBZ5236B_D87Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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