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Vishay General Semiconductor - Diodes Division SML4754-E3/61
- Part No.:
- SML4754-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SML4754-E3/61.pdf
- Description:
- DIODE ZENER 39V 1W DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,144
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Product details
Overview
SML4754-E3/61 from Vishay Semiconductors is a surface-mount Zener diode with a nominal Zener voltage of 39 V, ±5 % tolerance (suffix A), 6.5 mA test current, 1000 mW power dissipation at TL = 75 °C, and DO-214AC (SMA) package. It provides low dynamic impedance (29.7 Ω at IZT) and is AEC-Q101 qualified for automotive applications.
For engineers reviewing the SML4754-E3/61 datasheet, SML4754-E3/61 pinout, SML4754-E3/61 application, or SML4754-E3/61 equivalent, key selection criteria include Zener voltage stability under temperature variation, surge current capability (115 mApk), RoHS compliance, MSL Level 1 handling, and compatibility with reflow soldering at 260 °C/10 s.
Technical Context
The SML4754-E3/61 operates as a precision voltage reference and overvoltage protection device in DC bias networks, utilizing silicon planar construction with single-junction Zener breakdown. Its regulation relies on stable reverse-biased operation at 6.5 mA, with low dynamic impedance ensuring minimal voltage deviation under load transients.
Designed for surface-mount assembly on PCBs with copper thermal pads, it maintains junction temperature ≤150 °C under rated power and supports storage from –65 °C to +150 °C. The DO-214AC package enables automated placement and meets UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V nominal, ±5 % tolerance - ensures tight voltage clamping in reference and protection circuits |
| Test Current (IZT) | 6.5 mA - defines operating point where VZ and dynamic impedance are specified |
| Dynamic Impedance (ZZ) | 29.7 Ω at IZT - determines output voltage variation under changing load current |
| Power Dissipation (Ptot) | 1000 mW at TL = 75 °C - sets maximum continuous power handling with PCB thermal relief |
| Surge Current (IRM) | 115 mApk (8.3 ms pulse) - supports transient overvoltage suppression without failure |
| Junction Temperature (Tj) | 150 °C maximum - defines upper thermal limit for reliable long-term operation |
| Reverse Leakage (IR) | 0.25 μA at VR = 29.7 V - confirms low off-state current in high-impedance bias networks |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded plastic case with cathode band marking; dimensions 4.93 mm × 5.28 mm × 2.29 mm; weight 64 mg; MSL Level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node in reverse-bias configuration; establishes reference return path |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to higher-potential node; conducts when reverse voltage exceeds 39 V ±5 % |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| UL 94 V-0 flammability rating | Ensures flame-retardant behavior during fault conditions or board-level thermal events |
| Low regulation factor | Minimizes output voltage drift across operating current range, improving reference stability |
| High-temperature soldering guarantee | Withstands 260 °C for 10 s at terminals - compatible with standard lead-free reflow profiles |
| RoHS-compliant (E3 suffix) | Meets EU Directive 2011/65/EU; no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE |
Applications
| Automotive ECU Power Rail Protection | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Clamping 12 V/24 V supply rails against load-dump transients in engine control units. IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector in parallel with rail. Use Value: Withstands 115 mApk surge and maintains 39 V clamping threshold within ±5 %, preventing downstream IC damage. |
Use Scenario: Providing stable 39 V bias for high-precision analog front-end amplifiers in pressure sensors. IC Role / Device Role / Timing Role: Precision voltage reference source in sensor excitation circuitry. Use Value: Low 29.7 Ω dynamic impedance minimizes voltage droop under varying sensor loading, improving measurement accuracy. |
| Telecom Line Card Surge Suppression | Medical Diagnostic Equipment Reference |
Use Scenario: Protecting Ethernet PHY interfaces from induced surges on PoE-powered line cards. IC Role / Device Role / Timing Role: Secondary clamping element coordinated with TVS diodes for staged protection. Use Value: Tight 39 V tolerance ensures predictable clamping onset before IC absolute maximum ratings are exceeded. |
Use Scenario: Generating calibrated reference voltage for ADC calibration in portable ultrasound devices. IC Role / Device Role / Timing Role: Stable DC reference node in low-noise, battery-powered signal chain. Use Value: AEC-Q101 qualification and 150 °C max junction temperature support extended reliability in sealed, thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C39LT1G | 39 V ±5 %, 300 mW, SOT-23 package, 90 Ω ZZ at 5 mA | Lower power rating and higher dynamic impedance limit use to low-current references | Select when space-constrained layouts require SOT-23 and full 1 W dissipation is unnecessary |
| 1N4754A | 39 V ±5 %, 1000 mW, DO-41 through-hole package, 35 Ω ZZ at 6.5 mA | Through-hole mounting requires manual or wave-solder process; not suitable for automated SMT lines | Choose only for legacy through-hole designs or prototyping where DO-214AC footprint is unavailable |
Compared with BZX84-C39LT1G and 1N4754A, the SML4754-E3/61 delivers superior thermal performance in SMT production via its DO-214AC package, tighter ZZ, and AEC-Q101 qualification-making it optimal for automotive and industrial surface-mount systems requiring robust 39 V regulation.
Availability
SML4754-E3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, telecom line cards, and medical diagnostic equipment requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SML4754-E3/61 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 manufacturer of discrete semiconductors and passive components, founded in 1962 and headquartered in Malvern, PA. It serves automotive, industrial, computing, and consumer markets with vertically integrated fabrication and testing.
The SML47xx series belongs to Vishay's surface-mount Zener diode product line, engineered specifically for high-reliability voltage regulation and transient suppression in space-constrained, thermally demanding environments.
FAQ
What is the Zener voltage tolerance for SML4754-E3/61?
The SML4754-E3/61 has a Zener voltage tolerance of ±5 %, confirmed by the "A" suffix in the family designation (SML4754A). This means its measured VZ at 6.5 mA falls between 37.05 V and 40.95 V under standard test conditions (Tamb = 25 °C). The tolerance is guaranteed per Vishay's Rev. 1.9 datasheet, Document Number 85782.
Is SML4754-E3/61 suitable for automotive applications?
Yes, the SML4754-E3/61 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet. This certification validates its reliability for automotive electronic control units, including resistance to thermal cycling, humidity, and mechanical stress. The "HE3" variant (e.g., SML4754HE3/61) denotes AEC-Q101 qualification, while "E3" alone indicates RoHS-compliant commercial grade-but the SML4754-E3/61 shares identical electrical and thermal specs and is widely used in automotive designs.
What is the maximum surge current rating for SML4754-E3/61?
The SML4754-E3/61 supports a non-repetitive surge current of 115 mApk, defined per JEDEC method as an 8.3 ms pulse-width square wave or equivalent sine-wave superimposed on the 6.5 mA test current. This value is listed in the Electrical Characteristics table of the Vishay datasheet and enables transient overvoltage suppression in power rail protection circuits.
Does SML4754-E3/61 have a RoHS-compliant construction?
Yes, the "E3" suffix in SML4754-E3/61 indicates RoHS-compliant construction per Directive 2011/65/EU. Vishay certifies that all E3-suffix parts meet restrictions on lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. This is documented in Vishay's Material Category Policy (www.vishay.com/doc?99912) and confirmed in the ordering information section of the SML47xx datasheet.
What is the thermal derating behavior of SML4754-E3/61 above 75 °C?
The SML4754-E3/61 is rated for 1000 mW total power dissipation at terminal temperature (TL) = 75 °C. Above this, power must be linearly derated at 13.3 mW/°C - calculated from the slope of the derating curve in Figure 1 of the datasheet. At TL = 125 °C, maximum allowable power drops to approximately 333 mW, preserving junction temperature ≤150 °C.
SML4754-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 39 V
- Tolerance:
- ±10%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 29.7 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SML4754-E3/61 FAQ
1.How can I place an order for SML4754-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SML4754-E3/61 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 SML4754-E3/61 reliable?
The price and inventory of SML4754-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SML4754-E3/61 is usually 5 days.
3.What payment methods are accepted for SML4754-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SML4754-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SML4754-E3/61?
SML4754-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SML4754-E3/61 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 SML4754-E3/61?
For technical support, including SML4754-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SML4754-E3/61 requirements.
6.How does Aetrix verify that SML4754-E3/61 is sourced from the original manufacturer or authorized distributors?
All SML4754-E3/61 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 SML4754-E3/61 meets industry standards.
7.What is the process for return or replacement of SML4754-E3/61?
All SML4754-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SML4754-E3/61, 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 SML4754-E3/61 part is unused and in its original packaging.
Return procedure for SML4754-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SML4754-E3/61 Tags
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