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Diodes Incorporated MMSZ5236BS-7-F
- Part No.:
- MMSZ5236BS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5236BS-7-F.pdf
- Description:
- DIODE ZENER 7.5V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:66,489
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Product details
Overview
MMSZ5236BS-7-F from Diodes Incorporated is a surface-mount 7.5 V Zener diode in SOD-323 package, rated for 200 mW power dissipation, 6 Ω dynamic impedance at 20 mA test current, and 3.0 µA reverse leakage at 6.0 V, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the MMSZ5236BS-7-F datasheet, MMSZ5236BS-7-F pinout, MMSZ5236BS-7-F application, or MMSZ5236BS-7-F equivalent, key selection criteria include zener voltage tolerance (±4.5% at 7.5 V), thermal resistance (625 °C/W), cathode-band polarity marking, and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or supply conditions. Its planar die construction ensures consistent breakdown characteristics and low leakage, with specified performance validated at 25°C ambient and derated linearly above 25°C per Fig. 1.
The device exhibits 6 Ω zener impedance at IZT = 20 mA and 500 Ω at IZK = 0.25 mA, indicating tight regulation in both nominal and knee-region operation. Capacitance is not characterized in the datasheet, and no frequency-dependent AC parameters are provided.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 7.5 V - Stable regulation point at 20 mA test current, ±4.5% tolerance band (7.13–7.88 V) |
| Power Dissipation | 200 mW - Maximum continuous DC power at 25°C ambient; derates to zero at 150°C per 625 °C/W slope |
| Zener Impedance | 6 Ω @ 20 mA - Low dynamic resistance enables minimal output voltage variation under load transients |
| Reverse Leakage Current | 3.0 µA @ 6.0 V - Confirms low standby power loss in voltage-reference or clamping configurations |
| Forward Voltage | 0.9 V @ 10 mA - Enables use as low-drop rectifier or ESD protection element in bidirectional paths |
| Operating Temperature | −65°C to +150°C - Supports industrial and automotive under-hood applications without derating penalty |
Pinout & Package
Package: SOD-323 - ultra-compact 2-pin surface-mount plastic case (2.3–2.7 mm length × 1.2–1.4 mm width × 0.25–0.35 mm height), UL 94V-0 rated, moisture sensitivity level 1, cathode identified by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in regulation mode; serves as return path for reverse-bias current |
| Cathode | Zener breakdown terminal / Voltage reference output | Marked with band; delivers regulated 7.5 V when biased above breakdown with series current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable Zener voltage distribution and long-term stability under thermal cycling |
| SOD-323 footprint | Enables high-density PCB layout and compatibility with standard 0805-class pick-and-place equipment |
| Lead-free & RoHS-compliant plating | Matte tin over Alloy 42 leadframe meets EU Directive 2011/65/EU without post-solder reflow concerns |
| Halogen- and antimony-free "Green" design | Contains <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - compliant with IPC-1752A environmental reporting |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 7.5 V bias for op-amp input stages or ADC reference dividers in battery-powered sensors. IC Role / Device Role / Timing Role: Voltage reference element establishing precise DC operating point independent of supply ripple. Use Value: 7.5 V nominal with ±4.5% tolerance and 6 Ω impedance maintains reference accuracy within 15 mV under 1 mA load variation. |
Use Scenario: Protecting microcontroller GPIO pins from transient surges exceeding 6.0 V in industrial I/O modules. IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground before damage threshold is reached. Use Value: 3.0 µA leakage at 6.0 V ensures negligible quiescent current; 200 mW rating handles short-duration 100 ns pulses up to 200 mJ. |
| Low-Power Sensor Bias | Signal-Level Translation |
Use Scenario: Generating fixed 7.5 V bias for photodiode transimpedance amplifiers in optical smoke detectors. IC Role / Device Role / Timing Role: Precision DC voltage source enabling predictable gain and offset calibration. Use Value: −65°C to +150°C operating range supports outdoor deployment; 0.004 g weight minimizes mechanical stress on flex PCBs. |
Use Scenario: Level-shifting 3.3 V logic signals to interface with 5 V legacy peripherals using passive resistor-Zener topology. IC Role / Device Role / Timing Role: Threshold-setting component defining high-level recognition voltage in open-drain bus systems. Use Value: 0.9 V forward drop allows bidirectional signal conditioning; cathode-band marking prevents orientation errors during automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B7V5,115 (Nexperia) | Same 7.5 V nominal, 300 mW rating, SOD-323 package, but 15 Ω ZZT vs. 6 Ω | Higher impedance reduces regulation precision under load; suitable where ±100 mV error is acceptable | Select when higher power margin is needed and tighter voltage stability is not required |
| MMBZ5236BS-7-F (Diodes Inc.) | Identical electrical specs, but in SOT-23 package (larger footprint, 350 mW rating) | Greater thermal mass allows higher continuous current; incompatible with SOD-323 land pattern | Choose for prototyping or thermal-limited designs where board space permits SOT-23 |
Compared with BZX384-B7V5,115 and MMBZ5236BS-7-F, the MMSZ5236BS-7-F delivers superior regulation precision (6 Ω vs. 15 Ω) in the smallest footprint, making it optimal for space-constrained, low-power voltage references where thermal load is managed via PCB copper area.
Availability
MMSZ5236BS-7-F is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, low-power sensor bias, and signal-level translation requiring stable component supply and full RoHS compliance.
Supply support for MMSZ5236BS-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, serving industrial, computing, consumer, and communications markets since 1959.
The MMSZ52xxBS series belongs to Diodes' general-purpose Zener diode product line, designed specifically for compact, high-reliability voltage regulation and clamping in automated SMT environments.
FAQ
What is the maximum reverse voltage that can be continuously applied without breakdown?
The MMSZ5236BS-7-F begins controlled Zener breakdown at 7.13 V (minimum specified VZ). Applying ≥7.13 V in reverse with appropriate series current limiting will initiate regulation. Sustained reverse voltage below 6.0 V ensures <3.0 µA leakage, preserving low-power operation.
How does thermal derating affect usable power at 85°C ambient?
At 85°C ambient, the allowable power dissipation is reduced to 120 mW, calculated as 200 mW × [1 − (85 − 25)/625]. This requires adjusting the series resistor to limit IZ to ≤16 mA to avoid junction overheating and parameter drift.
Is this diode suitable for ESD protection in USB data lines?
No - the MMSZ5236BS-7-F lacks specified ESD ratings (e.g., IEC 61000-4-2), has no guaranteed clamping voltage below 15 V, and exhibits slow response relative to dedicated TVS diodes. It is intended for DC regulation, not transient suppression.
Can the cathode band be used to verify orientation during automated optical inspection (AOI)?
Yes - the molded cathode band is optically detectable and defined in the SOD-323 mechanical drawing (AP02002). AOI systems calibrated for Diodes Inc. SOD-323 packages reliably identify band position within ±0.05 mm, ensuring correct placement prior to reflow.
MMSZ5236BS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 200 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:
- SOD-323
MMSZ5236BS-7-F FAQ
1.How can I place an order for MMSZ5236BS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5236BS-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 MMSZ5236BS-7-F reliable?
The price and inventory of MMSZ5236BS-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 MMSZ5236BS-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5236BS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5236BS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5236BS-7-F?
MMSZ5236BS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5236BS-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 MMSZ5236BS-7-F?
For technical support, including MMSZ5236BS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5236BS-7-F requirements.
6.How does Aetrix verify that MMSZ5236BS-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5236BS-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 MMSZ5236BS-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5236BS-7-F?
All MMSZ5236BS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5236BS-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 MMSZ5236BS-7-F part is unused and in its original packaging.
Return procedure for MMSZ5236BS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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