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Diodes Incorporated MMBZ5236B-7-F
- Part No.:
- MMBZ5236B-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5236B-7-F.pdf
- Description:
- DIODE ZENER 7.5V 350MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,397
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Product details
Overview
MMBZ5236B-7-F from Diodes Incorporated is a 7.5V ±4% tolerance, 350mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and transient overvoltage clamping in low-power analog and digital supply rails. It delivers 6Ω dynamic impedance at 20mA test current, supports ≤3.0µA reverse leakage at 6.0V, and operates across –65°C to +150°C.
For engineers reviewing the MMBZ5236B-7-F datasheet, MMBZ5236B-7-F pinout, MMBZ5236B-7-F application, or MMBZ5236B-7-F equivalent, this part serves as a compact, RoHS-compliant, JEDEC-qualified voltage reference for power rail stabilization, ESD protection interface buffering, and bias network calibration in space-constrained PCB designs.
Technical Context
This Zener diode uses planar die construction for stable breakdown characteristics and low thermal drift. Its 7.5V nominal Zener voltage is specified at 20mA (IZT), with guaranteed minimum/maximum bounds of 7.13V–7.88V and a maximum Zener impedance of 6Ω at IZT and 500Ω at 0.25mA (IZK).
Thermal resistance is 357°C/W on FR-4 PCB with recommended pad layout; power derating begins linearly above +25°C ambient, reaching zero dissipation at +150°C. Reverse leakage remains ≤3.0µA up to VR = 6.0V, ensuring minimal standby current draw in bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5V nominal, 7.13–7.88V range at 20mA - defines precise clamping threshold for 5V/12V rail monitoring and feedback loops |
| Power Dissipation (PD) | 350mW on FR-4 - supports continuous regulation in low-current bias networks without heatsinking |
| Zener Impedance (ZZT) | 6Ω max at 20mA - ensures tight voltage regulation under varying load conditions in reference circuits |
| Reverse Leakage (IR) | ≤3.0µA at VR = 6.0V - minimizes quiescent current in battery-powered sensor biasing and level-shifting |
| Operating Temp Range | –65°C to +150°C - enables use in automotive engine control modules and industrial motor drive feedback paths |
| Package | SOT23 - 3-pin surface-mount footprint compatible with automated pick-and-place and reflow assembly |
Pinout & Package
Package: SOT23 - molded plastic, green compound (UL 94V-0), 0.008g weight, matte tin-plated Alloy 42 leadframe, moisture sensitivity Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Cathode-referenced current sink | Connected to ground or lower-potential node; enables reverse-biased operation for voltage clamping |
| Cathode (Pin 2) | Zener voltage reference node | Connected to regulated rail or signal line; establishes stable 7.5V reference when reverse-biased |
| No-Connect (Pin 3) | Non-functional terminal | Internally unconnected; must remain floating or tied to ground per layout best practices to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables repeatable Zener voltage tolerance and long-term stability under thermal cycling |
| 350mW dissipation on FR-4 | Eliminates need for external heat spreading in compact consumer and IoT power management layouts |
| Lead-free & RoHS 3 compliant | Meets global environmental compliance requirements for automotive and medical end equipment |
| JEDEC high-reliability qualification | Validated for mission-critical applications including industrial control and automotive body electronics |
Applications
| Power Supply Rail Clamp | ESD Protection Interface |
|---|---|
|
Use Scenario: Clamping 12V auxiliary rail in automotive infotainment head unit to prevent overvoltage damage during load dump transients. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt excess energy into ground path. Use Value: Limits rail excursion to ≤7.9V, protecting downstream LDOs and microcontroller I/O pins rated for 8V absolute maximum. |
Use Scenario: Protecting USB data lines (D+/D−) against electrostatic discharge in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-capacitance voltage clamp placed between signal line and ground to divert ESD current. Use Value: Responds within nanoseconds to 8kV HBM events while adding <0.5pF parasitic capacitance to preserve signal integrity. |
| Bias Network Reference | ADC Input Protection |
|
Use Scenario: Providing stable 7.5V reference for op-amp gain-setting resistors in thermocouple amplifier front-end. IC Role / Device Role / Timing Role: Precision voltage reference source establishing known DC offset in analog signal chain. Use Value: Maintains ±0.35% voltage accuracy over temperature, reducing system-level calibration frequency by 40%. |
Use Scenario: Preventing overvoltage damage to 12-bit SAR ADC input pins in programmable logic controller analog input module. IC Role / Device Role / Timing Role: Input-stage clamp limiting analog input to safe range before internal ESD structures activate. Use Value: Activates at 7.88V to protect 5.5V-rated ADC inputs without affecting 0–5V measurement range linearity. |
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-C7V5 | Same 7.5V nominal, but 300mW rating and higher ZZT (15Ω @ 5mA); SOT23 package with different marking scheme | Lower power handling limits use in sustained clamp scenarios; requires derating above +70°C ambient | Select when cost sensitivity outweighs thermal margin needs and legacy BOM compatibility is required |
| MMBZ5236BS-7-F | Same electrical specs but SOD-323 package (smaller footprint, 0.003g weight); identical Zener characteristics and RoHS compliance | Higher board density achievable, but reduced thermal mass lowers peak pulse energy absorption capability | Select for ultra-compact wearables or hearing aid PCBs where space is constrained more than thermal performance |
Compared with BZX84-C7V5 and MMBZ5236BS-7-F, the MMBZ5236B-7-F offers superior thermal robustness (350mW vs. 300mW/200mW) and tighter impedance control (6Ω vs. 15Ω/8Ω), making it preferred for industrial power monitoring and automotive subsystems requiring extended temperature reliability.
Availability
MMBZ5236B-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and consumer power adapter feedback circuits requiring stable component supply with full traceability and lifecycle continuity.
Supply support for MMBZ5236B-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This device belongs to the MMBZ52xxB series of 350mW Zener diodes engineered for high-reliability voltage reference and clamping in automotive, industrial, and computing applications where JEDEC qualification and RoHS compliance are mandatory.
FAQ
What is the maximum reverse leakage current for MMBZ5236B-7-F at 6.0V?
The maximum reverse leakage current is 3.0µA at VR = 6.0V and TA = +25°C, as specified in the Electrical Characteristics table. This value is measured under DC conditions and remains stable across the full operating temperature range, supporting low-power bias network designs in battery-operated systems.
Can MMBZ5236B-7-F be used in place of a 6.8V Zener diode?
No - MMBZ5236B-7-F has a nominal Zener voltage of 7.5V (7.13–7.88V range), not 6.8V. Substituting it for a 6.8V device would raise the clamping threshold by ~10%, potentially exposing downstream components to overvoltage. Use MMBZ5235B-7-F (6.8V) instead for that voltage point.
Is the SOT23 package of MMBZ5236B-7-F compatible with standard reflow profiles?
Yes - the SOT23 package is qualified for lead-free reflow per J-STD-020, with moisture sensitivity Level 1. It withstands peak temperatures up to 260°C for ≤60 seconds and supports standard Pb-free reflow profiles (e.g., IPC/JEDEC J-STD-020 Class 3), provided recommended pad layout and thermal relief are followed.
Does MMBZ5236B-7-F meet AEC-Q200 stress testing requirements?
No - MMBZ5236B-7-F is JEDEC-qualified for high reliability but not AEC-Q200 certified. For automotive applications requiring AEC-Q200 qualification, Diodes offers the automotive-grade Q-suffix variant MMBZ5236BQ-7-F, which undergoes additional temperature cycling, humidity bias, and mechanical shock testing.
MMBZ5236B-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MMBZ5236B-7-F FAQ
1.How can I place an order for MMBZ5236B-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5236B-7-F 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-7-F reliable?
The price and inventory of MMBZ5236B-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5236B-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5236B-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5236B-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5236B-7-F?
MMBZ5236B-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5236B-7-F 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-7-F?
For technical support, including MMBZ5236B-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5236B-7-F requirements.
6.How does Aetrix verify that MMBZ5236B-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5236B-7-F 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-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5236B-7-F?
All MMBZ5236B-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5236B-7-F, 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-7-F part is unused and in its original packaging.
Return procedure for MMBZ5236B-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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