My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBZ5926B-M3/5B
;;2.jpg)
- Part No.:
- SMBZ5926B-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBZ5926B-M3/5B.pdf
- Description:
- DIODE ZENER 11V 550MW DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,816
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBZ5926B-M3/5B from Vishay General Semiconductor is a surface-mount Zener voltage-regulating diode with nominal Zener voltage 11 V, maximum Zener impedance 550 Ω at 5.5 mA test current, and reverse leakage current ≤5 μA at 8.4 V. It delivers 3000 mW power dissipation at 75 °C lead temperature and operates across -55 °C to +150 °C junction range, used for precision DC voltage regulation in power supply feedback paths.
For engineers reviewing the SMBZ5926B-M3/5B datasheet, SMBZ5926B-M3/5B pinout, SMBZ5926B-M3/5B application, or SMBZ5926B-M3/5B equivalent, key selection criteria include Zener voltage tolerance (±5.5 %), thermal resistance (25 °C/W junction-to-lead), MSL level 1 rating, halogen-free RoHS compliance, and DO-214AA package compatibility with automated SMT placement.
Technical Context
This device functions as a single-element, silicon planar Zener diode optimized for stable voltage reference and overvoltage protection in low-to-medium power circuits. Its electrical behavior is defined by tightly controlled reverse breakdown characteristics, low dynamic impedance below 550 Ω, and predictable temperature coefficient near zero crossing in the 10–12 V range.
Designed for operation under steady-state DC or low-duty-cycle pulse conditions (300 μs, 1 % duty cycle), it relies on thermal conduction through the SMB package leads for heat dissipation - requiring PCB pad layout per Vishay's minimum recommendation to achieve rated 3000 mW at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.5 V min / 11.0 V nom / 11.6 V max at IZT = 5.5 mA - defines regulation setpoint with ±5.5 % tolerance |
| Zener Impedance (ZZT) | ≤550 Ω at IZT = 5.5 mA - ensures minimal output voltage variation under load changes |
| Reverse Leakage (IR) | ≤5 μA at VR = 8.4 V - guarantees low standby power loss in high-impedance bias networks |
| Power Dissipation | 550 mW at TA = 25 °C; 3000 mW at TL = 75 °C - requires thermal management via lead conduction, not ambient convection |
| Junction Temperature | -55 °C to +150 °C - supports industrial and automotive under-hood environments when properly mounted |
| Package | SMB (DO-214AA) - standardized surface-mount outline with cathode band marking and 226 °C/W junction-to-ambient thermal resistance |
Pinout & Package
Two-terminal device in SMB (DO-214AA) package: anode and cathode marked by molded cathode band. No internal connections beyond the two leads; polarity-critical for correct biasing in shunt regulator configurations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in shunt configuration | Connected to system ground or lowest potential point; carries full Zener current during regulation |
| Cathode | Regulated output node | Connected to input rail via series resistor; maintains stable voltage relative to anode under varying load |
Key Features
| Feature | Design Value |
|---|---|
| Low Zener impedance | 550 Ω max at 5.5 mA enables tight regulation in feedback loops with dynamic load steps |
| Halogen-free & RoHS-compliant | M3 suffix confirms compliance with JEDEC JESD201 Class 2 whisker resistance and environmental directives |
| MSL Level 1 rating | Rated for peak reflow up to 260 °C - supports standard lead-free SMT assembly without preconditioning |
| Stable temperature coefficient | Near-zero TC in 10–12 V range minimizes drift over -40 °C to +85 °C operating range |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module Reference |
|---|---|
Use Scenario: Shunt regulation of 12 V auxiliary rail in programmable logic controller (PLC) power stage. IC Role / Device Role / Timing Role: Voltage reference element in op-amp-based feedback network controlling buck converter output. Use Value: Maintains ±1 % output stability over 0–50 °C ambient with <10 mV line/load regulation error due to 550 Ω ZZT. | Use Scenario: Overvoltage clamp protecting microcontroller I/O pins against load-dump transients in BCM subsystem. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between 12 V rail and ground, triggered above 11.6 V. Use Value: Clamps 100 V/10 ms load dump to <15 V peak within 100 ns, leveraging 3000 mW surge capability at lead temperature. |
| Medical Sensor Signal Conditioning | Telecom Line Card Bias Supply |
Use Scenario: Precision bias voltage generation for analog front-end amplifiers in portable ECG monitor. IC Role / Device Role / Timing Role: Low-noise DC reference source feeding instrumentation amplifier gain-setting network. Use Value: Delivers <5 μA leakage at 8.4 V, reducing offset drift contribution to <0.5 μV/°C in high-Z bias paths. | Use Scenario: Standby voltage reference for hot-swap controller IC on 48 V telecom line card. IC Role / Device Role / Timing Role: Stable 11 V reference enabling accurate current-limit threshold setting under variable input ripple. Use Value: Supports 5.5 mA test current with <1 % hysteresis over 1000-hour life, verified per Vishay qualification standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C11LT1G | Lower power rating (300 mW), SOT-23 package, higher ZZT (20 Ω typical but only at 5 mA) | Not suitable for >100 mA load regulation; limited thermal capacity prevents use in high-current shunt roles | Select only for space-constrained low-power bias references where SMB footprint is unavailable |
| 1N4740A | Through-hole DO-41 package, same 10 V nominal but wider tolerance (±5 %), higher ZZT (20 Ω at 25 mA) | Requires wave soldering; incompatible with automated SMT lines and high-density PCB layouts | Choose only for legacy repair, prototyping, or non-automated production where surface-mount is not required |
Compared with BZX84-C11LT1G and 1N4740A, SMBZ5926B-M3/5B provides superior thermal performance (3000 mW at TL), tighter Zener voltage distribution, and SMT-ready halogen-free construction - making it optimal for volume-manufactured industrial and automotive power rails.
Availability
SMBZ5926B-M3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, medical sensor signal conditioning, and telecom line card bias supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBZ5926B-M3/5B 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBZ59xxB family targets high-reliability surface-mount Zener regulation, engineered for consistent voltage reference performance in harsh thermal and electrical environments across industrial, automotive, and medical systems.
FAQ
What is the Zener voltage tolerance of SMBZ5926B-M3/5B?
The SMBZ5926B-M3/5B has a Zener voltage range of 10.5 V (minimum) to 11.6 V (maximum) at test current IZT = 5.5 mA, corresponding to a ±5.5 % tolerance around the nominal 11.0 V value. This tolerance is guaranteed across the full operating temperature range and is verified per Vishay's production testing protocol detailed in document 89418.
Can SMBZ5926B-M3/5B be used in place of a 12 V Zener diode?
No - SMBZ5926B-M3/5B is specified at 11.0 V nominal with 10.5–11.6 V range; it is not a 12 V device. Substituting it for a true 12 V Zener (e.g., SMBZ5927B at 12.0 V nominal) would result in undershoot of the target regulation voltage by ~1 V, potentially causing system malfunction in feedback-critical applications.
What is the maximum DC Zener current for SMBZ5926B-M3/5B?
The maximum DC Zener current IZM for SMBZ5926B-M3/5B is 136 mA, calculated from Ptot = 550 mW at TA = 25 °C and VZ ≈ 11 V. At elevated ambient temperatures or with reduced thermal resistance (e.g., using copper pour), higher currents may be sustained - but must remain within the 3000 mW limit at TL = 75 °C.
Does SMBZ5926B-M3/5B require derating at high ambient temperatures?
Yes - SMBZ5926B-M3/5B must be derated linearly above 25 °C ambient. Its power dissipation drops from 550 mW at 25 °C to zero at approximately 145 °C, based on RθJA = 226 °C/W. For continuous operation at 70 °C ambient, maximum allowable power is ~350 mW unless additional thermal relief (e.g., thermal vias, copper area) is implemented.
Is SMBZ5926B-M3/5B compatible with lead-free reflow processes?
Yes - SMBZ5926B-M3/5B meets MSL Level 1 per J-STD-020 and is rated for peak reflow temperatures up to 260 °C, making it fully compatible with standard lead-free soldering profiles. The matte tin-plated leads comply with J-STD-002 and JESD22-B102 for reliable wetting and intermetallic formation.
SMBZ5926B-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±2%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 5.5 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBZ5926B-M3/5B FAQ
1.How can I place an order for SMBZ5926B-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBZ5926B-M3/5B 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 SMBZ5926B-M3/5B reliable?
The price and inventory of SMBZ5926B-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBZ5926B-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBZ5926B-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBZ5926B-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBZ5926B-M3/5B?
SMBZ5926B-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBZ5926B-M3/5B 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 SMBZ5926B-M3/5B?
For technical support, including SMBZ5926B-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBZ5926B-M3/5B requirements.
6.How does Aetrix verify that SMBZ5926B-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBZ5926B-M3/5B 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 SMBZ5926B-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBZ5926B-M3/5B?
All SMBZ5926B-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBZ5926B-M3/5B, 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 SMBZ5926B-M3/5B part is unused and in its original packaging.
Return procedure for SMBZ5926B-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBZ5926B-M3/5B Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
