MMBZ4686-E3-08 Vishay Zener Diode (SOT23 (3-Pin)) In Stock

Name: MMBZ4686-E3-08
Brand: Vishay
SKU: MMBZ4686-E3-08
Availability: InStock

Vishay MMBZ4686-E3-08 is a 3.9 V single silicon Zener diode with 0.225 W power dissipation and 5% tolerance in an SOT-23 3-pin SMD package. Offers precise voltage regulation for low-power circuits. RoHS-compliant and available with worldwide shipping.

OBSOLETEZener DiodeVerified Jun 2026

Package / Visual Reference

MMBZ4686-E3-08SOT23 (3-Pin)

Quick Facts

Manufacturer: Vishay
Package: SOT23 (3-Pin)
Pin Count: 3
Lifecycle: OBSOLETE
Datasheet: MMBZ4686-E3-08 Datasheet PDF
Category: Zener Diode
Temp Range: -55.0°C to 150.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of MMBZ4686-E3-08?

3.9 V Zener voltage with 5% tolerance in compact SOT-23 3-pin package for space-constrained designs
0.225 W power dissipation rating suitable for low-power voltage clamping and regulation applications
RoHS-compliant (e3 JESD-609 code) single silicon Zener diode for modern eco-conscious designs

What is MMBZ4686-E3-08 used for?

The MMBZ4686-E3-08 serves as a precision voltage reference and clamping diode in portable consumer electronics, battery management circuits, and low-power sensor interfaces operating at 3.9 V rails. Its SOT-23 package fits tightly spaced PCB layouts in wearables and IoT devices. It also protects sensitive inputs from transient overvoltage events in signal conditioning circuits.

What are the specifications of MMBZ4686-E3-08?

Pbfree Code	Yes
YTEOL	0
Configuration	SINGLE
Diode Element Material	SILICON
Diode Type	ZENER DIODE
JESD-30 Code	R-PDSO-G3
JESD-609 Code	e3
Number of Elements	1
Package Body Material	PLASTIC/EPOXY
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Polarity	UNIDIRECTIONAL
Power Dissipation-Max	0.35W
Reference Voltage-Nom	3.9V
Surface Mount	YES
Technology	ZENER
Terminal Finish	MATTE TIN
Terminal Form	GULL WING
Terminal Position	DUAL
Voltage Tol-Max	5%
Working Test Current	0.05mA
Package	SOT23 (3-Pin)

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8541.10.00.50

Where can I find the MMBZ4686-E3-08 datasheet?

MMBZ4686-E3-08 Datasheet Download

Official datasheet from Vishay

What are equivalent replacements for MMBZ4686-E3-08?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What is the Zener voltage and power rating of MMBZ4686-E3-08?

The MMBZ4686-E3-08 has a Zener voltage of 3.9 V with a 5% tolerance and a maximum power dissipation of 0.225 W. These parameters make it suitable for precision voltage regulation tasks in low-power circuits requiring a stable 3.9 V reference without excessive heat dissipation.

Which package does MMBZ4686-E3-08 use, and how does it benefit PCB layout?

The MMBZ4686-E3-08 is housed in an SOT-23 3-pin SMD package measuring approximately 3.0 mm x 1.4 mm. This small footprint enables high-density PCB layouts in portable electronics, wearables, and IoT modules where board space is at a premium and automated SMT assembly is required.

Can MMBZ4686-E3-08 replace other 3.9 V Zener diodes from different suppliers?

Yes, MMBZ4686-E3-08 can typically replace other 3.9 V, 0.225 W Zener diodes in SOT-23 packages such as BZX84C3V9 or MMBZ4686, provided the replacement meets the same 5% tolerance and reverse leakage specs. Verify the current handling at maximum 0.225 W dissipation and confirm RoHS e3 compliance matches your application requirements.

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