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Vishay General Semiconductor - Diodes Division GLL4755A-E3/96
- Part No.:
- GLL4755A-E3/96
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF
- Datasheet:
-
GLL4755A-E3/96.pdf
- Description:
- DIODE ZENER 43V 1W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,153
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Product details
Overview
GLL4755A-E3/96 from Vishay Semiconductors is a 43 V ±5 % glass-passivated Zener diode in MELF DO-213AB package, rated for 1 W power dissipation at 75 °C terminal temperature, with 6 mA test current, 32.7 V nominal Zener voltage at IZT, and 1500 Ω dynamic impedance - used for precision voltage regulation in industrial power supplies and analog reference circuits.
For engineers reviewing the GLL4755A-E3/96 datasheet, GLL4755A-E3/96 pinout, GLL4755A-E3/96 application, or GLL4755A-E3/96 equivalent, this page delivers verified electrical parameters, thermal limits, MELF package dimensions, surge current capability (70 mApk), and direct alternatives for voltage reference design validation and BOM optimization.
Technical Context
The GLL4755A-E3/96 operates as a single-element, surface-mount Zener diode with glass-passivated junction for stable reverse breakdown. Its 43 V nominal Zener voltage is specified at 6 mA test current (IZT1), with dynamic impedance of 1500 Ω at 1 kHz and ≤0.25 μA reverse leakage at 32.7 V.
Thermal performance is defined by 170 °C/W junction-to-ambient thermal resistance and 150 °C maximum junction temperature. It supports high-temperature soldering (260 °C peak, 10 s at terminals) and complies with UL 94 V-0 flammability rating in its MELF plastic package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V nominal, ±5 % tolerance - ensures tight regulation for reference and protection circuits requiring stable 43 V clamping. |
| Test Current (IZT1) | 6 mA - defines operating point where VZ and dynamic impedance are guaranteed per JEDEC test conditions. |
| Dynamic Impedance (ZZ) | 1500 Ω at 1 kHz - indicates moderate AC impedance; suitable for low-frequency regulation but not high-speed transient suppression. |
| Power Dissipation (Ptot) | 1000 mW at TT = 75 °C - requires thermal pad design or airflow for full-power operation above ambient. |
| Reverse Leakage (IR) | ≤0.25 μA at 32.7 V - enables low-current bias networks and high-impedance sensing without loading error. |
| Surge Current (IZM) | 70 mApk (8.3 ms pulse) - supports short-duration overvoltage events in power rail protection applications. |
| Forward Voltage (VF) | 1.2 V at 200 mA - confirms standard silicon PN junction behavior for forward-bias use cases like polarity protection. |
Pinout & Package
GLL4755A-E3/96 uses a two-terminal MELF (DO-213AB) package: cylindrical glass-passivated body with cathode indicated by a single band. No internal pin numbering; terminals are anode (unbanded end) and cathode (banded end).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener breakdown terminal | Connected to regulated node; reverse-biased during normal operation to maintain 43 V reference. |
| Anode (unbanded end) | Reference ground/reference return | Typically tied to system ground or lower-potential rail; completes Zener conduction path under overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enhances long-term stability and moisture resistance vs. epoxy-coated Zeners, critical for industrial environments. |
| UL 94 V-0 flammability rating | Meets safety standards for flame-retardant PCB mounting in mains-connected equipment and power converters. |
| Low regulation factor | Minimizes voltage drift across operating current range - improves accuracy in feedback loops and reference dividers. |
| High-temp soldering guarantee (250 °C/10 s) | Ensures robustness during reflow assembly without parametric shift or junction damage. |
| MSL Level 1 rating | Eliminates dry-pack requirements and bake-out prior to assembly - reduces manufacturing overhead. |
Applications
| Industrial Power Supply Regulation | Automotive ECU Reference Voltage |
|---|---|
Use Scenario: Stabilizing 43 V auxiliary rail in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener reference element providing fixed voltage threshold for overvoltage detection and feedback control. Use Value: Tight ±5 % tolerance and low tempco ensure consistent trip point across -40 °C to +125 °C ambient. |
Use Scenario: Generating stable bias voltage for sensor signal conditioning in engine control units. IC Role / Device Role / Timing Role: Precision shunt reference supplying known voltage to op-amp input stages. Use Value: 0.25 μA leakage at 32.7 V prevents loading errors in high-impedance sensor interfaces. |
| Telecom Line Card Protection | Medical Instrumentation Reference |
Use Scenario: Clamping transient surges on 48 V DC distribution lines in base station line cards. IC Role / Device Role / Timing Role: Primary overvoltage clamp absorbing 8.3 ms surge pulses up to 70 mApk. Use Value: 70 mApk surge rating and 1 W steady-state dissipation enable reliable front-end protection without derating. |
Use Scenario: Providing calibrated reference for ADC/DAC calibration in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-drift voltage reference source in battery-powered measurement subsystems. Use Value: Glass passivation and MELF construction ensure parameter stability over 10+ year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C43LT1G | 43 V ±5 %, SOT-23 package, 300 mW Ptot, 100 Ω ZZ - lower power, lower impedance, smaller footprint. | Suitable for low-power portable electronics; not rated for 1 W continuous dissipation or 70 mApk surge. | Select when board space is constrained and thermal load is <300 mW; verify layout thermal relief for SOT-23. |
| 1N4733A | 43 V ±5 %, DO-41 axial lead, 1 W Ptot, 1500 Ω ZZ - same electrical specs but through-hole, higher RthJA (220 °C/W). | Used in legacy designs or prototyping; requires manual soldering or wave-solder process; no MSL compliance. | Choose for cost-sensitive, non-automated assembly or where axial leads simplify mechanical mounting. |
Compared with GLL4755A-E3/96, BZX84-C43LT1G offers superior impedance and compactness at reduced power handling, while 1N4733A provides identical regulation performance in a through-hole format with higher thermal resistance - both require reassessment of thermal design and PCB assembly method.
Availability
GLL4755A-E3/96 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU reference voltage generation, and telecom line card protection requiring stable component supply and traceable sourcing.
Supply support for GLL4755A-E3/96 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements with emphasis on reliability and precision.
The GLL47xxA series belongs to Vishay's high-stability Zener diode product line, engineered for voltage reference and regulation in harsh-environment industrial, automotive, and telecom systems.
FAQ
What is the Zener voltage tolerance for GLL4755A-E3/96?
The "A" suffix in GLL4755A-E3/96 denotes ±5 % Zener voltage tolerance at 25 °C, confirmed in the Electrical Characteristics table. This tighter tolerance versus standard ±10 % parts enables higher-accuracy voltage references in feedback networks and protection circuits where regulation precision is critical.
Does GLL4755A-E3/96 support automated SMT assembly?
Yes, GLL4755A-E3/96 is qualified for surface-mount assembly with MSL Level 1 rating per J-STD-020 and guaranteed 260 °C peak reflow profile. Its DO-213AB MELF package is compatible with standard pick-and-place equipment using appropriate nozzle geometry and vision alignment.
What is the maximum surge current rating for GLL4755A-E3/96?
GLL4755A-E3/96 is rated for 70 mApk non-repetitive surge current under JEDEC-standard 8.3 ms pulse conditions. This value appears in the Electrical Characteristics table as IZM and supports transient overvoltage protection in DC power rails without requiring external current limiting.
How does the thermal resistance of GLL4755A-E3/96 affect PCB layout?
With RthJA = 170 °C/W, GLL4755A-E3/96 requires adequate copper area (e.g., ≥8 mm² per terminal) and minimal thermal isolation to sustain 1 W dissipation at 75 °C terminal temperature. Layouts must avoid narrow traces or thermal vias that increase effective RthJA beyond specification.
Is GLL4755A-E3/96 suitable for medical-grade applications?
GLL4755A-E3/96 meets UL 94 V-0 flammability and MSL Level 1 requirements, and its glass-passivated junction ensures long-term parameter stability - making it suitable for non-life-sustaining medical instrumentation such as portable diagnostic device references, provided final system validation confirms compliance with IEC 60601-1 creepage/clearance and reliability targets.
GLL4755A-E3/96 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-213AB, MELF
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 32.7 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB (MELF)
GLL4755A-E3/96 FAQ
1.How can I place an order for GLL4755A-E3/96 through Aetrix?
Please submit a Request for Quotation (RFQ) for GLL4755A-E3/96 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 GLL4755A-E3/96 reliable?
The price and inventory of GLL4755A-E3/96 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GLL4755A-E3/96 is usually 5 days.
3.What payment methods are accepted for GLL4755A-E3/96?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GLL4755A-E3/96 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GLL4755A-E3/96?
GLL4755A-E3/96 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GLL4755A-E3/96 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 GLL4755A-E3/96?
For technical support, including GLL4755A-E3/96 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GLL4755A-E3/96 requirements.
6.How does Aetrix verify that GLL4755A-E3/96 is sourced from the original manufacturer or authorized distributors?
All GLL4755A-E3/96 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 GLL4755A-E3/96 meets industry standards.
7.What is the process for return or replacement of GLL4755A-E3/96?
All GLL4755A-E3/96 units undergo pre-shipment inspection (PSI). If there is an issue with GLL4755A-E3/96, 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 GLL4755A-E3/96 part is unused and in its original packaging.
Return procedure for GLL4755A-E3/96:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GLL4755A-E3/96 Tags
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