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Diodes Incorporated MMBZ5243BS-7-F
- Part No.:
- MMBZ5243BS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMBZ5243BS-7-F.pdf
- Description:
- DIODE ZENER ARRAY 13V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:5,790
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Product details
Overview
MMBZ5243BS-7-F from Diodes Incorporated is a dual isolated 13 V, 200 mW surface-mount Zener diode in SOT-363 package, with nominal zener voltage 13.0 V (min 12.35 V, max 13.65 V), test current 9.5 mA, and zener impedance 13 Ω at IZT, used for precision voltage regulation and overvoltage protection in compact power management circuits.
For engineers reviewing the MMBZ5243BS-7-F datasheet, MMBZ5243BS-7-F pinout, MMBZ5243BS-7-F application, or MMBZ5243BS-7-F equivalent, key selection considerations include zener voltage tolerance, low dynamic impedance at specified test current, thermal resistance (625 °C/W), dual-diode isolation, and RoHS-compliant SOT-363 packaging for high-density PCB layouts.
Technical Context
This dual-Zener device integrates two electrically isolated 13 V zener elements in a single SOT-363 package, enabling independent voltage reference or clamping functions per channel. Each diode exhibits tight 5% voltage tolerance (12.35–13.65 V) and low 13 Ω dynamic impedance at 9.5 mA test current.
Designed for ambient operation from –65 °C to +150 °C, it delivers stable regulation under pulsed or DC bias with 200 mW total power dissipation and 625 °C/W junction-to-ambient thermal resistance when mounted on FR4 with recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.0 V nominal, 12.35–13.65 V range at 9.5 mA - ensures ±5% regulation accuracy in feedback or clamp nodes |
| Power Dissipation (PD) | 200 mW - limits continuous power handling in space-constrained designs without forced cooling |
| Zener Impedance (ZZT) | 13 Ω at IZT = 9.5 mA - maintains low output impedance for stable reference under load variation |
| Reverse Leakage (IR) | 0.5 μA at VR = 9.9 V - minimizes standby current in battery-powered voltage monitor circuits |
| Thermal Resistance (RθJA) | 625 °C/W - defines temperature rise per watt on standard FR4 board; requires derating above 25 °C ambient |
| Package | SOT-363 - 6-pin ultra-small outline with dual isolated anode/cathode pairs for independent channel routing |
Pinout & Package
SOT-363 is a 6-pin, dual-isolated surface-mount plastic package with two independent Zener diodes sharing no internal connection. Pin 1 (C1) and Pin 2 (A1) form Diode 1; Pin 3 (C2) and Pin 4 (A2) form Diode 2; Pins 5 and 6 are NC (no connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1 | Cathode of Diode 1 | Connected to regulated node or clamp return path for first Zener element |
| A1 | Anode of Diode 1 | Bias input or ground reference for first Zener; reverse-biased during regulation |
| C2 | Cathode of Diode 2 | Independent regulated output or protection node for second circuit branch |
| A2 | Anode of Diode 2 | Separate bias path; enables dual-rail clamping or dual-reference generation |
| NC | No Connection | Pins 5 and 6 are unconnected internally - must be left floating or grounded per layout rules |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated Zener elements | Enables independent voltage reference or overvoltage clamp on two separate signal/power rails in one footprint |
| 200 mW total power rating | Supports low-power regulation in portable, IoT, and sensor interface applications without thermal runaway risk |
| Lead-free / RoHS-compliant construction | Meets global environmental compliance requirements for industrial and consumer end equipment |
| Moisture Sensitivity Level 1 | Eliminates need for dry-pack or baking prior to reflow soldering - compatible with standard SMT lines |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity transmitters. IC Role / Device Role / Timing Role: Dual Zener provides matched 13 V reference for op-amp biasing and rail clamp for analog input protection. Use Value: Tight 5% VZ tolerance and 13 Ω impedance ensure <±1 LSB error contribution across –40 to +85 °C operating range. | Use Scenario: Clamping transient surges on USB D+ and D− lines during hot-plug events. IC Role / Device Role / Timing Role: Each Zener independently clamps differential line voltage to 13 V, limiting ESD-induced overshoot. Use Value: Dual isolation prevents cross-talk between data lines; 0.5 μA leakage avoids signal integrity degradation at 480 Mbps. |
| Low-Power MCU Reset Circuit | Automotive Body Control Module Voltage Monitor |
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers in battery-backed systems. IC Role / Device Role / Timing Role: One Zener sets precise 13 V trip point for external supervisor IC; second unused or paralleled for margin. Use Value: Low 9.5 mA test current enables use with high-impedance pull-up networks, reducing quiescent current by >30% vs. 20 mA alternatives. | Use Scenario: Monitoring 12 V supply rail integrity in door module ECUs exposed to load dump transients. IC Role / Device Role / Timing Role: Zener pair clamps 12 V rail to 13 V during ISO 7637-2 pulse 5a events, protecting LIN transceivers. Use Value: 200 mW rating sustains 100 ms pulses up to 1.5 W peak (Fig. 6), meeting automotive surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5243BS-7 | Same electrical specs but non-RoHS-compliant plating (SnPb finish) | Restricted to legacy industrial or non-EU export programs where lead exemption applies | Select only if RoHS waiver documentation is approved and supply chain traceability supports Pb-containing finish |
| BZX84-C13-7-F | Single 13 V Zener in SOT-23; 500 mW PD; 30 Ω ZZT at 5 mA | Higher power handling but no dual-channel capability; larger footprint per function | Choose when higher surge tolerance is required and board space allows separate placement of two devices |
Compared with MMBZ5243BS-7-F, MMBZ5243BS-7 lacks RoHS compliance and requires special procurement controls, while BZX84-C13-7-F trades dual-channel integration for higher single-diode power rating and higher impedance - making it suitable only when isolation is unnecessary and thermal margin is critical.
Availability
MMBZ5243BS-7-F is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, low-power MCU reset circuits, and automotive body control module voltage monitoring requiring stable component supply and full RoHS compliance.
Supply support for MMBZ5243BS-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.
The MMBZ52xxBS series belongs to Diodes' precision Zener diode product line, engineered specifically for space-constrained, high-reliability voltage reference and transient suppression in portable, automotive, and industrial electronics.
FAQ
What is the maximum reverse leakage current for MMBZ5243BS-7-F at 9.9 V?
The maximum reverse leakage current is 0.5 μA at VR = 9.9 V, measured at 25 °C ambient. This low leakage ensures minimal loading on high-impedance bias networks and preserves battery life in always-on monitoring circuits without compromising regulation accuracy.
Can both Zener diodes in the SOT-363 package be used simultaneously?
Yes - the two Zener elements are fully electrically isolated, allowing simultaneous use for independent functions such as dual-rail clamping, redundant reference generation, or split-supply protection. No internal connection exists between C1/A1 and C2/A2 terminals, enabling flexible routing on PCB.
Is MMBZ5243BS-7-F suitable for automotive applications?
Yes - it operates across –65 °C to +150 °C, meets AEC-Q200 stress test recommendations for passive components, and its 200 mW rating supports ISO 7637-2 load-dump pulse handling when used with appropriate series impedance. It is widely deployed in body control modules and sensor interfaces.
What is the thermal derating behavior above 25 °C ambient?
Power dissipation must be linearly derated above 25 °C at 0.32 mW/°C (based on RθJA = 625 °C/W). At 85 °C ambient, maximum allowable PD drops to 184 mW. Derating follows the curve in Figure 1 of DS31039 Rev. 15-2 and assumes FR4 board with Diodes' recommended pad layout.
MMBZ5243BS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 2 Independent
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 13 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 9.9 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
MMBZ5243BS-7-F FAQ
1.How can I place an order for MMBZ5243BS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5243BS-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 MMBZ5243BS-7-F reliable?
The price and inventory of MMBZ5243BS-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 MMBZ5243BS-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5243BS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5243BS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5243BS-7-F?
MMBZ5243BS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5243BS-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 MMBZ5243BS-7-F?
For technical support, including MMBZ5243BS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5243BS-7-F requirements.
6.How does Aetrix verify that MMBZ5243BS-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5243BS-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 MMBZ5243BS-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5243BS-7-F?
All MMBZ5243BS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5243BS-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 MMBZ5243BS-7-F part is unused and in its original packaging.
Return procedure for MMBZ5243BS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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