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Z1SMA5.6
Diotec Semiconductor
ZENER SMA 5.6V 1.5W 5%
26061 Pcs New Original In Stock
Zener Diode 5.6 V 1 W ±5% Surface Mount DO-214AC (SMA)
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5.0 / 5.0
- (433 Ratings)
Z1SMA5.6
Product Overview
12944813
DiGi Electronics Part Number
Z1SMA5.6-DGManufacturer
Diotec Semiconductor
Z1SMA5.6
Description
ZENER SMA 5.6V 1.5W 5%Inventory
26061 Pcs New Original In Stock
Zener Diode 5.6 V 1 W ±5% Surface Mount DO-214AC (SMA)
Quantity
Minimum 1
Minimum 1
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Z1SMA5.6 Technical Specifications
Category
Diodes, Zener, Single Zener Diodes
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Voltage - Zener (Nom) (Vz)
5.6 V
Tolerance
±5%
Power - Max
1 W
Impedance (Max) (Zzt)
10 Ohms
Current - Reverse Leakage @ Vr
3 µA @ 500 mV
Voltage - Forward (Vf) (Max) @ If
1 V @ 200 mA
Operating Temperature
-50°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
DO-214AC, SMA
Supplier Device Package
DO-214AC (SMA)
Datasheet & Documents
HTML Datasheet
Z1SMA5.6-DG
Environmental & Export Classification
RoHS Status
Not applicable
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
Vendor Undefined
ECCN
EAR99
HTSUS
8541.10.0000
Additional Information
Other Names
2796-Z1SMA5.6TR
Standard Package
7,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
高い供給信頼性と丁寧なフォローアップに感謝しています。
Dec 02, 2025
DiGi Electronics actively seeks customer feedback to improve their support services.
Dec 02, 2025
DiGi Electronics’ dedication to customer satisfaction is evident in every interaction I have with them.
Dec 02, 2025
Their prices are very reasonable, especially for the quality of support received.
Dec 02, 2025
Whenever I need help after purchase, their customer service is quick, friendly, and effective.
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Frequently Asked Questions (FAQ)
Can the Z1SMA5.6 Zener diode safely replace a 1N4734A in a 5V rail regulation circuit without compromising thermal performance or long-term reliability?
The Z1SMA5.6 (5.6V, 1.5W, SMA package) can electrically replace the 1N4734A (5.6V, 1W, DO-41) in many 5V rail applications due to its higher power rating and tighter thermal characteristics (TJ up to 150°C). However, the SMA surface-mount package has lower natural convection cooling than the axial DO-41, so ensure adequate PCB copper pour for heat dissipation. In high-ambient or enclosed environments, verify junction temperature stays below 125°C using thermal resistance (RθJA ≈ 80–100°C/W typical for SMA). For cost-sensitive, low-power designs, the 1N4734A may still be preferable; for space-constrained or higher-reliability boards, the Z1SMA5.6 offers better surge tolerance and modern assembly compatibility.
What are the key risks when using the Z1SMA5.6 in a high-vibration automotive environment, and how can layout mitigate potential failure modes?
In automotive or high-vibration settings, the Z1SMA5.6’s surface-mount SMA package is susceptible to mechanical stress at the solder joints, especially if placed near board edges or unsupported spans. To mitigate risk, use a robust solder mask-defined pad design, add thermal relief spokes to large ground planes to reduce solder wicking, and avoid placing the diode over split planes or near mounting holes. Consider underfill or conformal coating in extreme environments. Additionally, ensure the PCB substrate is rigid (e.g., FR4 with adequate thickness) and perform thermal cycling tests per AEC-Q101 if qualifying for automotive use—though note that Diotec does not officially claim AEC-Q compliance for this part.
How does the Z1SMA5.6 compare to the BZX84C5V6 in terms of leakage current stability over temperature, and when should I prefer one over the other?
The Z1SMA5.6 specifies 3 µA reverse leakage at 500 mV and 25°C, while the BZX84C5V6 (from Infineon/Nexperia) typically shows <1 µA under similar conditions and better leakage stability across its –65°C to +150°C range. If your design involves precision analog front-ends, low-power battery monitoring, or high-impedance sensor interfaces where nanoamp-level leakage matters, the BZX84C5V6 is superior. However, the Z1SMA5.6 offers higher power handling (1.5W vs. 300–500 mW) and is more suitable for transient voltage suppression or coarse regulation in digital systems. Choose the Z1SMA5.6 for power robustness; choose the BZX84C5V6 for signal integrity in sensitive circuits.
Is it safe to parallel two Z1SMA5.6 diodes to increase current handling in a crowbar overvoltage protection circuit, and what derating considerations apply?
Paralleling Z1SMA5.6 diodes is not recommended without current-sharing measures due to inherent Vz tolerance (±5%) and negative temperature coefficient near breakdown—this can cause thermal runaway where one diode carries disproportionate current. If absolutely necessary, add small series resistors (e.g., 1–5 Ω, 1W) to each diode to enforce current sharing, and ensure both devices are thermally coupled on the same copper area. Even then, derate total power to ≤60% of the combined rating (i.e., <1.8W total) and validate under worst-case transient conditions. A better approach is to select a single higher-power Zener like the SMAZ5V6 (5.6V, 5W) or use a TVS diode rated for surge currents instead.
Can the Z1SMA5.6 be used reliably in a 48V industrial bus protection circuit with frequent inductive load switching, and what clamping performance should I expect?
The Z1SMA5.6 is not ideal for direct 48V bus protection due to its low breakdown voltage (5.6V)—it would conduct continuously under normal operation. However, it can serve in a secondary clamp stage (e.g., after a series resistor or in a feedback loop) to protect low-voltage logic. For primary 48V transient suppression, use a high-voltage TVS diode (e.g., SMAJ48A). If you're using the Z1SMA5.6 in a foldback or crowbar configuration, ensure the series impedance limits current to <267 mA (1W / 5.6V ≈ 179 mA continuous; derate for pulses). Frequent inductive switching increases thermal cycling stress—monitor cumulative energy (I²t) and consider adding a snubber network to reduce dV/dt stress on the Zener.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
Z1SMA5.6 CAD Models
Diotec Semiconductor Z1SMA5.6 PCB symbols & footprints
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