Diodes Incorporated MMBZ5236BS-7

Overview

MMBZ5236BS-7 from Diodes Incorporated is a dual isolated 200 mW surface-mount Zener diode in SOT-363 package, with nominal zener voltage 7.5 V (min 7.13 V, max 7.88 V) at 20 mA test current, 6 Ω zener impedance at I_ZT, and 3.0 μA reverse leakage at 6.0 V. It serves as precision voltage reference and overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the MMBZ5236BS-7 datasheet, MMBZ5236BS-7 pinout, MMBZ5236BS-7 application, or MMBZ5236BS-7 equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at operating current, thermal resistance (625 °C/W), and dual-diode isolation for bidirectional clamping or dual-rail reference use.

Technical Context

This device integrates two independent Zener diodes in a single SOT-363 package, enabling symmetrical voltage clamping or dual-rail reference generation without discrete pairing. Each diode exhibits tight 5% zener voltage tolerance (7.13–7.88 V), low 6 Ω dynamic impedance at 20 mA, and guaranteed ≤3.0 μA reverse leakage at 6.0 V.

Designed for automated SMT assembly, it features matte tin-plated Alloy 42 leads, UL 94V-0 mold compound, and J-STD-020D Level 1 moisture sensitivity. Power dissipation derates linearly above 25 °C ambient, reaching zero at 150 °C per the 625 °C/W R_θJA.

Key Specifications

Pinout & Package

SOT-363 package: 6-pin, dual-isolated Zener configuration with pin 1 (C1), pin 2 (A1), pin 3 (C2), pin 4 (A2), pins 5–6 (NC). Molded plastic case meets UL 94V-0; weight ≈0.006 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C7V5LT1G and PDZ7.5B,115, MMBZ5236BS-7 uniquely delivers dual isolated Zener functionality in ultra-compact SOT-363, reducing component count by 50% and board area by 40% in bidirectional clamp designs.

Availability

MMBZ5236BS-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port ESD protection, and low-power IoT node voltage reference requiring stable component supply across extended temperature ranges and high-volume production cycles.

Supply support for MMBZ5236BS-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, headquartered in California and operating design centers across Asia and Europe.

The MMBZ52xxBS series belongs to Diodes' precision Zener diode product line, engineered specifically for space-constrained, low-power voltage regulation and bidirectional transient suppression in portable and automotive electronics.

FAQ

What is the maximum reverse voltage this device can withstand before breakdown?

The MMBZ5236BS-7 has a nominal zener voltage of 7.5 V with a guaranteed range of 7.13 V to 7.88 V at 20 mA test current. Its reverse breakdown is tightly controlled and repeatable within this band; operation below 7.13 V results in negligible conduction (<3.0 μA at 6.0 V), and exceeding 7.88 V initiates stable zener regulation-not destructive avalanche.

Can this dual-Zener be used for bidirectional TVS protection?

Yes-its dual isolated structure allows one Zener to clamp positive transients to +7.5 V while the other conducts in forward mode to clamp negative excursions to approximately −0.9 V. This achieves effective ±8.4 V bidirectional clamping with sub-nanosecond response, confirmed by Diodes Inc.'s Fig. 2 and Fig. 6 surge performance data.

Is the SOT-363 package compatible with standard reflow profiles?

Yes-the device is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity, with peak temperature up to 260 °C. Its matte tin finish and Alloy 42 leadframe ensure reliable wetting and intermetallic formation under standard Pb-free profiles, provided recommended pad layout (AP02001) is followed to manage thermal mass.

How does its zener impedance affect regulation accuracy in a 10 kΩ load circuit?

With Z_ZT = 6 Ω at 20 mA, a 1 mA load variation causes only ~6 mV output shift. In a 10 kΩ load drawing 0.75 mA from a 7.5 V rail, this translates to <0.1% regulation error-significantly tighter than single-Zener alternatives with >10 Ω impedance, making it suitable for precision analog front-ends.