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Diodes Incorporated MMBZ5232BS-7
- Part No.:
- MMBZ5232BS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMBZ5232BS-7.pdf
- Description:
- DIODE ZENER ARRAY 5.6V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:5,296
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Product details
Overview
MMBZ5232BS-7 from Diodes Incorporated is a dual isolated 5.6 V Zener diode in SOT-363 package, rated for 200 mW power dissipation, 11 Ω zener impedance at 20 mA, and 5.0 μA reverse leakage at 3.0 V, used for precision voltage reference and overvoltage protection in compact DC power rails.
For engineers reviewing the MMBZ5232BS-7 datasheet, MMBZ5232BS-7 pinout, MMBZ5232BS-7 application, or MMBZ5232BS-7 equivalent, key selection criteria include nominal zener voltage tolerance (±5%), low dynamic impedance, dual-diode isolation, SOT-363 thermal performance, and RoHS-compliant lead-free plating.
Technical Context
This device integrates two electrically isolated Zener diodes in a single ultra-small surface-mount package, enabling bidirectional clamping or independent reference generation without cross-coupling. Its planar die construction ensures stable breakdown characteristics across temperature.
Designed for automated assembly, it supports reflow soldering per J-STD-020D Level 1 moisture sensitivity and delivers 625 °C/W junction-to-ambient thermal resistance on FR4 PCBs with recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V nominal, 5.32–5.88 V range at 20 mA - defines stable regulation point for low-power references |
| Power Dissipation (PD) | 200 mW - limits continuous current to ~35.7 mA at 5.6 V in ambient conditions |
| Zener Impedance (ZZT) | 11 Ω at 20 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 5.0 μA at 3.0 V - confirms low standby current in undervoltage detection circuits |
| Thermal Resistance (RθJA) | 625 °C/W - requires careful PCB copper area allocation to avoid exceeding 150 °C junction temperature |
| Package | SOT-363 - 6-pin, dual-diode configuration with C1/A1/C2/A2/NC/NC pinout and 0.006 g mass |
Pinout & Package
SOT-363 is a 6-pin ultra-small plastic surface-mount package with dual isolated Zener elements. Pin 1 (C1) and Pin 3 (C2) are cathodes; Pin 2 (A1) and Pin 4 (A2) are anodes; Pins 5 and 6 are no-connect terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (C1) | Cathode of Zener 1 | Connected to regulated node; reverse-biased during clamping or reference operation |
| Pin 2 (A1) | Anode of Zener 1 | Ground or low-side return path for first Zener element |
| Pin 3 (C2) | Cathode of Zener 2 | Independent clamping node; electrically isolated from Zener 1 |
| Pin 4 (A2) | Anode of Zener 2 | Separate ground or bias path; enables dual-rail or differential protection |
| Pins 5 & 6 | No Connect | Unbonded terminals; must remain unconnected to avoid parasitic coupling or mechanical stress |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated Zener elements | Enables independent voltage clamping or reference generation on two circuits without shared substrate leakage |
| 200 mW power rating | Supports transient suppression up to 35.7 mA average current without derating below 25 °C ambient |
| 11 Ω dynamic impedance | Minimizes output voltage shift under ±5 mA load changes in feedback or sensing paths |
| SOT-363 footprint | Reduces board area by >60% vs. discrete SOT-23 Zeners while maintaining dual functionality |
| Lead-free / RoHS compliant | Meets IPC-J-STD-020D reflow profile requirements and eliminates post-solder cleaning for high-reliability assemblies |
Applications
| USB Port ESD Protection | Low-Power Sensor Reference |
|---|---|
Use Scenario: Clamps ±15 kV contact ESD pulses on USB D+ and D− lines before IC input stages. IC Role / Device Role: Dual-Zener clamping diode providing bidirectional rail-to-rail voltage limiting. Use Value: Leverages isolated cathodes (C1/C2) to clamp each data line independently without signal crosstalk. | Use Scenario: Supplies stable 5.6 V reference to analog front-end of battery-powered environmental sensor. IC Role / Device Role: Precision shunt reference with tight 5% tolerance and low 5 μA leakage at 3 V. Use Value: Enables <1% reference error over temperature using only passive components and no active regulation. |
| Industrial I/O Module Protection | Automotive Body Control Unit (BCU) Biasing |
Use Scenario: Protects 24 V digital input channels against load dump transients and inductive kickback. IC Role / Device Role: Dual Zener configured as series-shunt clamp across input and ground. Use Value: Uses A1/C1 and A2/C2 pairs to absorb 200 mW surges without thermal runaway or parameter drift. | Use Scenario: Generates local 5.6 V bias for LIN transceiver and microcontroller reset circuitry. IC Role / Device Role: Low-current shunt regulator operating at 1–2 mA quiescent current. Use Value: Maintains regulation down to 1.5 V supply headroom due to low 11 Ω impedance and 3.0 V knee voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V6LT1G | Single 5.6 V Zener in SOT-23; 15 Ω ZZT, 200 mW rating | Requires two devices for dual-channel use; higher impedance reduces regulation accuracy | Preferred when board space allows discrete placement and cost is prioritized over integration |
| MMBZ5232B-7 | SOT-23 package; single 5.6 V Zener; identical electrical specs but no dual isolation | Lacks second Zener element; unsuitable for independent dual-rail clamping | Select only when dual functionality is unnecessary and SOT-23 footprint is required |
Compared with BZX84-C5V6LT1G and MMBZ5232B-7, MMBZ5232BS-7 uniquely provides two isolated 5.6 V Zeners in one SOT-363, reducing component count and interconnect inlays while maintaining matched parametric performance across both elements.
Availability
MMBZ5232BS-7 is available at Aetrix Electronics and suitable for USB port protection, low-power sensor reference, industrial I/O module protection, and automotive body control unit biasing requiring stable component supply and long-term lifecycle continuity.
Supply support for MMBZ5232BS-7 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, specializing in high-reliability, industry-standard components for power management, signal integrity, and protection.
The MMBZ52xxBS series belongs to Diodes' precision Zener portfolio, designed specifically for space-constrained, low-power voltage reference and transient suppression applications where dual-element integration improves system-level robustness.
FAQ
What is the maximum continuous reverse current the MMBZ5232BS-7 can sustain at 25°C?
At 25°C ambient, the MMBZ5232BS-7 sustains up to 35.7 mA continuous reverse current (200 mW ÷ 5.6 V) before exceeding its power rating. Derating begins above 25°C per the 625 °C/W thermal resistance curve, reaching zero allowable current at 150°C junction temperature.
Can Pins 5 and 6 be grounded or left floating in PCB layout?
Pins 5 and 6 are internally unconnected and must remain unattached-neither grounded nor routed-to prevent mechanical stress on bond wires or unintended parasitic capacitance. The datasheet explicitly labels them as NC (no connect), and soldering or routing to them violates mechanical and reliability specifications.
How does the 11 Ω zener impedance affect regulation accuracy in a 1 mA load application?
With 11 Ω impedance, a 1 mA load change causes only 11 mV output variation (11 Ω × 1 mA), contributing less than 0.2% error to the 5.6 V nominal output. This enables stable reference performance even with modest load fluctuations in sensor biasing or feedback networks.
Is the MMBZ5232BS-7 suitable for use in automotive AEC-Q200 qualified designs?
The MMBZ5232BS-7 is not AEC-Q200 qualified. While it operates from −65°C to +150°C and meets RoHS requirements, Diodes Incorporated does not list this part in its AEC-Q200 stress-tested portfolio. For automotive applications requiring qualification, refer to Diodes' AZ series or contact Aetrix for validated alternatives.
MMBZ5232BS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Configuration:
- 2 Independent
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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-363
MMBZ5232BS-7 FAQ
1.How can I place an order for MMBZ5232BS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5232BS-7 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 MMBZ5232BS-7 reliable?
The price and inventory of MMBZ5232BS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5232BS-7 is usually 5 days.
3.What payment methods are accepted for MMBZ5232BS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5232BS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5232BS-7?
MMBZ5232BS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5232BS-7 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 MMBZ5232BS-7?
For technical support, including MMBZ5232BS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5232BS-7 requirements.
6.How does Aetrix verify that MMBZ5232BS-7 is sourced from the original manufacturer or authorized distributors?
All MMBZ5232BS-7 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 MMBZ5232BS-7 meets industry standards.
7.What is the process for return or replacement of MMBZ5232BS-7?
All MMBZ5232BS-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5232BS-7, 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 MMBZ5232BS-7 part is unused and in its original packaging.
Return procedure for MMBZ5232BS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5232BS-7 Tags
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Diodes Incorporated
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