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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Zener Diode Arrays

Diodes Incorporated MMBZ5223BS-7-F

Name: MMBZ5223BS-7-F
Brand: Diodes Incorporated
SKU: MMBZ5223BS-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MMBZ5223BS-7-F

Manufacturer:: Diodes Incorporated

Category:: Zener Diode Arrays

Package:: 6-TSSOP, SC-88, SOT-363

Datasheet:: MMBZ5223BS-7-F.pdf

Description:: DIODE ZENER ARRAY 2.7V SOT363

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Product details

Overview

MMBZ5223BS-7-F from Diodes Incorporated is a dual isolated 2.7 V Zener diode in SOT-363 package, rated for 200 mW power dissipation, 30 Ω zener impedance at 20 mA, and 75 μA reverse leakage at 1.0 V reverse bias; used for voltage regulation and reference in space-constrained portable power management circuits.

For engineers reviewing the MMBZ5223BS-7-F datasheet, MMBZ5223BS-7-F pinout, MMBZ5223BS-7-F application, or MMBZ5223BS-7-F equivalent, key selection criteria include nominal zener voltage tolerance (±4.4%), thermal resistance (625 °C/W), dual-diode isolation, RoHS-compliant matte tin plating, and SOT-363 footprint compatibility with automated pick-and-place.

Technical Context

This dual-element Zener diode integrates two electrically isolated 2.7 V breakdown junctions in a single ultra-small SOT-363 package, enabling compact dual-rail voltage clamping or reference generation without cross-coupling. Each element operates independently with identical electrical specs: 20 mA test current, 30 Ω dynamic impedance at 1 kHz, and 1300 Ω knee impedance at 0.25 mA.

The device uses planar die construction for stable breakdown characteristics across -65°C to +150°C operating range and achieves 625 °C/W junction-to-ambient thermal resistance on FR4 PCB with recommended pad layout. Its lead-free, halogen-free molding compound complies with Diodes Inc.'s "Green" policy and J-STD-020D Level 1 moisture sensitivity rating.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.7 V nominal, 2.57–2.84 V min/max at 20 mA - ensures tight regulation for low-voltage logic supply monitoring
Power Dissipation (P_D)	200 mW - limits continuous current to ~74 mA at 2.7 V, defining safe operating area in battery-powered circuits
Zener Impedance (Z_ZT)	30 Ω at 20 mA - determines output voltage variation under load transients in feedback reference paths
Reverse Leakage (I_R)	75 μA at 1.0 V - defines minimum bias current required to maintain regulation in high-impedance sensing nodes
Thermal Resistance (R_θJA)	625 °C/W - requires derating above 25°C ambient; full power only usable below 70°C board temperature
Package	SOT-363 - 2.2 mm × 1.35 mm footprint with six terminals, supporting dual isolated Zeners in one land pattern
Operating Temp	-65°C to +150°C - enables use in automotive under-hood and industrial motor control environments

Pinout & Package

SOT-363 package with six terminals: two anodes (A1, A2), two cathodes (C1, C2), and two no-connect (NC) pins. Molded plastic case meets UL 94V-0 flammability rating; terminals are solderable per MIL-STD-202 Method 208.

Pin/Terminal	Circuit Role	Design Meaning
C1	Cathode of Zener 1	Connected to regulated node; reverse-biased to establish 2.7 V reference relative to A1
A1	Anode of Zener 1	Common return path for first Zener; tied to ground or lower potential rail
C2	Cathode of Zener 2	Independent regulated output node; electrically isolated from C1/A1 pair
A2	Anode of Zener 2	Second independent return path; allows dual-rail referencing without shared impedance
NC	No Connect	Unused internal terminal; must remain unconnected to avoid parasitic coupling or ESD risk
NC	No Connect	Unused internal terminal; left floating per manufacturer recommendation

Key Features

Feature	Design Value
Dual isolated Zener elements	Enables independent voltage clamping or reference generation on two separate circuits within same footprint
Planar die construction	Delivers stable, repeatable breakdown voltage with low temperature coefficient across full operating range
Lead-free / RoHS-compliant plating	Matte tin finish over Alloy 42 leadframe ensures reliable solder wetting and eliminates Pb-related reliability concerns
Ultra-small SOT-363 package	Reduces PCB area by >50% vs. discrete dual-SOT-23 solution while maintaining full electrical isolation

Applications

Battery Voltage Monitor

USB Port Overvoltage Clamp

Use Scenario: Monitoring Li-ion cell voltage during charging in wearables using microcontroller ADC with internal reference.

IC Role / Device Role / Timing Role: Provides stable 2.7 V reference for ADC scaling and undervoltage lockout threshold detection.

Use Value: Tight ±4.4% V_Z tolerance and 75 μA I_R minimize quiescent current draw and improve measurement accuracy at low battery states.

Use Scenario: Protecting USB data lines (D+/D−) from ESD-induced overvoltage events in portable accessories.

IC Role / Device Role / Timing Role: Dual Zener configuration clamps both lines symmetrically to 2.7 V above GND and below V_CC.

Use Value: Independent C1/A1 and C2/A2 paths prevent crosstalk between D+ and D− protection circuits during fast transient suppression.

Low-Power Sensor Biasing

Industrial PLC Input Protection

Use Scenario: Supplying precise bias voltage to MEMS accelerometer analog front-end in always-on IoT nodes.

IC Role / Device Role / Timing Role: Acts as shunt regulator to stabilize 2.7 V supply rail feeding sensor signal conditioning circuitry.

Use Value: 30 Ω Z_ZT ensures <10 mV output shift under 300 μA load variation, preserving sensor SNR.

Use Scenario: Protecting 24 V digital input channels in programmable logic controllers against field-wiring surges.

IC Role / Device Role / Timing Role: One Zener element clamps input to 2.7 V above common, the other to 2.7 V below, forming bidirectional TVS-like behavior.

Use Value: Dual-isolation prevents ground loop interference between adjacent input channels sharing same backplane.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5223B-7-F	Single-element version in same SOT-363 package; lacks second isolated Zener	Only suitable where dual-rail referencing or channel isolation is unnecessary	Select when board space allows separate placement or only one reference is needed
BZX84-C2V7LT1G	Single 2.7 V Zener in SOT-23; 300 mW rating, 30 Ω Z_ZT, but no dual-element integration	Requires two devices and extra PCB area for dual-channel use; higher assembly cost	Choose if existing SOT-23 footprint reuse is prioritized over miniaturization

Compared with MMBZ5223BS-7-F, the single-element MMBZ5223B-7-F saves no board area in dual-use cases and BZX84-C2V7LT1G increases component count and layout complexity-making the dual-isolated SOT-363 version optimal for space-constrained dual-reference designs.

Availability

MMBZ5223BS-7-F is available at Aetrix Electronics and suitable for battery management systems, USB interface protection, low-power sensor biasing, and industrial PLC input conditioning requiring stable component supply and RoHS-compliant sourcing.

Supply support for MMBZ5223BS-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, specializing in high-reliability, energy-efficient components for consumer, computing, industrial, and automotive markets.

This part belongs to the MMBZ52xxBS series of dual Zener diodes designed specifically for miniaturized voltage regulation and clamping in portable and space-constrained electronic systems.

FAQ

What is the maximum continuous reverse current this device can handle before thermal runaway?

The MMBZ5223BS-7-F has a 200 mW power rating and 625 °C/W thermal resistance. At 2.7 V, maximum continuous reverse current is approximately 74 mA at 25°C ambient. Above that, self-heating exceeds safe junction temperature unless board-level heatsinking or derating is applied per Figure 1's power derating curve.

Can both Zener elements be used simultaneously with shared cathode connections?

No. The device features two fully isolated Zener junctions: C1/A1 and C2/A2 are electrically independent. Sharing cathodes would short the internal isolation barrier and invalidate the specified 2.7 V breakdown for either element. Each must be used with its dedicated anode and cathode pair.

Is the SOT-363 package compatible with standard reflow profiles for lead-free assembly?

Yes. The device is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity, with matte tin plating compatible with peak temperatures up to 260°C. Recommended profile follows IPC/JEDEC J-STD-020, with ramp rates and time-above-liquidus aligned to typical Pb-free SAC305 processes.

How does the 1300 Ω knee impedance at 0.25 mA affect low-current reference performance?

At sub-mA bias currents, the 1300 Ω knee impedance causes significant voltage droop: a 100 μA load shift produces ~130 mV error. For precision low-current references, operation above 1 mA is recommended to stay within the 30 Ω Z_ZT region where regulation remains stable and predictable.

MMBZ5223BS-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):: 2.7 V

Tolerance:: ±5%

Power - Max:: 200 mW

Impedance (Max) (Zzt):: 30 Ohms

Current - Reverse Leakage @ Vr:: 75 µA @ 1 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

MMBZ5223BS-7-F FAQ

1.How can I place an order for MMBZ5223BS-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for MMBZ5223BS-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 MMBZ5223BS-7-F reliable?

The price and inventory of MMBZ5223BS-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 MMBZ5223BS-7-F is usually 5 days.

3.What payment methods are accepted for MMBZ5223BS-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5223BS-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MMBZ5223BS-7-F?

MMBZ5223BS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MMBZ5223BS-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 MMBZ5223BS-7-F?

For technical support, including MMBZ5223BS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5223BS-7-F requirements.

6.How does Aetrix verify that MMBZ5223BS-7-F is sourced from the original manufacturer or authorized distributors?

All MMBZ5223BS-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 MMBZ5223BS-7-F meets industry standards.

7.What is the process for return or replacement of MMBZ5223BS-7-F?

All MMBZ5223BS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5223BS-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 MMBZ5223BS-7-F part is unused and in its original packaging.

Return procedure for MMBZ5223BS-7-F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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