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Renesas HZK4ATL-S-E
- Part No.:
- HZK4ATL-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK4ATL-S-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:52,000
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Product details
Overview
HZK4ATL-S-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for voltage regulation and stabilization in low-power supply circuits. It delivers a nominal zener voltage of 3.4–3.8 V at 5 mA, with dynamic resistance ≤100 Ω, maximum power dissipation of 500 mW, and operates within –55°C to +175°C storage temperature range. It is used in precision reference circuits for consumer-grade power management ICs and sensor biasing networks.
For engineers reviewing the HZK4ATL-S-E datasheet, HZK4ATL-S-E pinout, HZK4ATL-S-E application, or HZK4ATL-S-E equivalent, key selection criteria include its LLD surface-mount package, tight zener voltage tolerance (Grade A), low leakage current (<5 µA at 0.5 V), and temperature coefficient behavior near zero crossing (~0 mV/°C at ~3.6 V).
Technical Context
The HZK4ATL-S-E employs a silicon epitaxial planar junction structure optimized for stable DC voltage reference performance. Its zener breakdown mechanism dominates in the 3.4–3.8 V range, exhibiting low dynamic impedance (≤100 Ω at 5 mA) and minimal temperature drift near the zero-TC point.
This device operates exclusively in reverse-bias mode with no forward conduction role. It requires external current limiting and is rated for continuous DC operation only - not pulsed or AC-coupled applications - and is specified for use on standard glass-epoxy PCBs with defined thermal mass.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.4–3.8 V at IZ = 5 mA - defines stable regulation point for low-voltage references |
| Dynamic Resistance (rd) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under load changes |
| Maximum Power Dissipation (Pd) | 500 mW at Ta = 25°C - sets upper limit for safe continuous DC biasing |
| Reverse Leakage Current (IR) | ≤5 µA at VR = 1.0 V - guarantees low standby power loss in battery-sensitive designs |
| Junction Temperature (Tj) | 175°C - enables operation in thermally constrained industrial environments |
| Storage Temperature (Tstg) | –55°C to +175°C - supports wide-range logistics and non-operational environmental resilience |
Pinout & Package
Package: LLD (Leadless Low-profile Diode), JEITA-compliant surface-mount package with 0.027 g mass; dimensions 1.4 ± 0.1 mm diameter × 3.5 mm height; cathode band marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-bias terminal | Connected to higher-potential node; carries regulated output current during zener conduction |
| 2 (Anode) | Reference/ground terminal | Typically tied to system ground or common return; completes reverse-bias path |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤100 Ω at 5 mA - improves regulation accuracy under varying load conditions |
| Grade-A voltage tolerance | ±0.2 V over 3.4–3.8 V range - enables tighter reference design without trimming |
| LLD surface-mount package | 1.4 mm diameter footprint - supports high-density PCB layouts and automated assembly |
| Zero-TC voltage point | ~3.6 V (from Fig.2) - minimizes drift in ambient-temperature-varying applications |
Applications
| USB Peripheral Power Reference | IoT Sensor Biasing |
|---|---|
Use Scenario: Providing stable 3.6 V reference for ADC input scaling in USB-powered environmental sensors. IC Role / Device Role / Timing Role: Voltage reference diode supplying precise bias to analog front-end circuitry. Use Value: Enables <1% full-scale error in 10-bit ADC measurements without calibration, leveraging Grade-A VZ tolerance and low rd. |
Use Scenario: Setting accurate bias voltage for MEMS microphone preamplifier stages in battery-operated wearables. IC Role / Device Role / Timing Role: Low-leakage zener reference establishing DC operating point for amplifier quiescent current. Use Value: Maintains signal-to-noise ratio >65 dB by minimizing reference-induced noise and drift across –20°C to +70°C ambient. |
| Consumer Audio DAC Reference | Industrial PLC Input Conditioning |
Use Scenario: Generating clean 3.6 V reference for audio DAC voltage-controlled oscillator (VCO) tuning in portable speakers. IC Role / Device Role / Timing Role: Precision DC reference source stabilizing VCO center frequency against supply ripple. Use Value: Reduces jitter-induced harmonic distortion by limiting reference voltage deviation to <2 mV over 100 kHz supply noise bandwidth. |
Use Scenario: Clamping and regulating 5 V logic-level signals entering isolated analog input modules of programmable logic controllers. IC Role / Device Role / Timing Role: Overvoltage protection and level-shifting element in signal conditioning front-end. Use Value: Absorbs transient surges up to 500 mW without degradation, preserving downstream ADC integrity per IEC 61000-4-5 Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C3V6 (ON Semiconductor) | Same nominal VZ (3.6 V), but ±5% tolerance (vs. HZK4ATL-S-E's ±0.2 V); 500 mW rating; DO-35 package (larger than LLD) | Less suitable for space-constrained SMT designs; higher VZ drift due to wider tolerance and different TC curve | Select when legacy through-hole compatibility or cost sensitivity outweighs precision and size requirements |
| MMSZ4685 (Diodes Inc.) | VZ = 3.6 V, ±5%, SOD-123 package; lower Pd (350 mW); rd ≈ 120 Ω - higher than HZK4ATL-S-E's ≤100 Ω | Not recommended for high-stability reference roles where low impedance and tight tolerance are critical | Acceptable for general-purpose clamping where regulation accuracy is secondary to footprint and cost |
Compared with BZX55C3V6 and MMSZ4685, the HZK4ATL-S-E offers superior voltage precision, lower dynamic impedance, and a compact LLD package - making it optimal for modern SMT-based reference designs demanding stability, miniaturization, and repeatability without calibration.
Availability
HZK4ATL-S-E is available at Aetrix Electronics and suitable for USB peripheral power reference, IoT sensor biasing, and consumer audio DAC reference applications requiring stable component supply, consistent parametric performance across production lots, and long-term obsolescence mitigation.
Supply support for HZK4ATL-S-E 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and consumer systems.
The HZK Series was developed by Renesas Electronics as a family of precision silicon Zener diodes targeting stabilized DC power supply and reference applications in standard-grade electronics - emphasizing reliability, tight voltage tolerance, and surface-mount compatibility.
FAQ
What is the exact zener voltage range for HZK4ATL-S-E?
The HZK4ATL-S-E has a guaranteed zener voltage range of 3.4 V to 3.8 V at test current IZ = 5 mA, corresponding to Grade A specification per the Renesas HZK Series datasheet Rev.3.00. This tolerance is confirmed in the Electrical Characteristics table on page 2 and applies strictly to the HZK4ATL-S-E variant.
Is HZK4ATL-S-E RoHS compliant?
Yes, HZK4ATL-S-E complies with the EU RoHS Directive as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and meets all substance restrictions applicable to "Standard" grade products.
What is the thermal derating behavior of HZK4ATL-S-E above 25°C?
HZK4ATL-S-E follows linear thermal derating: power dissipation decreases from 500 mW at 25°C ambient to zero at 150°C, as shown in Fig.3 (page 5). Derating slope is approximately –3.33 mW/°C above 25°C, based on the 500 mW / (150 – 25) °C relationship defined in the Absolute Maximum Ratings table.
Can HZK4ATL-S-E be used in AC-coupled or pulse applications?
No - the HZK4ATL-S-E is characterized and rated for DC operation only, as explicitly stated in the datasheet notes ("Tested with DC"). Its electrical parameters, including dynamic resistance and leakage, are not validated for AC, transient, or pulsed conditions, and using it outside DC bias risks parametric deviation or premature failure.
What does the "TL-S-E" suffix indicate in HZK4ATL-S-E?
The "TL-S-E" suffix denotes Renesas' internal packaging and marking variant: "TL" indicates tape-and-reel packaging per JIS C 0806, "S" specifies standard-grade quality (per Quality Grade Note 7), and "E" identifies the LLD package with specific color-code marking (Yellow Green cathode band, Orange second band, Pink third band per page 4).
HZK4ATL-S-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
HZK4ATL-S-E FAQ
1.How can I place an order for HZK4ATL-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK4ATL-S-E 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 HZK4ATL-S-E reliable?
The price and inventory of HZK4ATL-S-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZK4ATL-S-E is usually 5 days.
3.What payment methods are accepted for HZK4ATL-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK4ATL-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK4ATL-S-E?
HZK4ATL-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK4ATL-S-E 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 HZK4ATL-S-E?
For technical support, including HZK4ATL-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK4ATL-S-E requirements.
6.How does Aetrix verify that HZK4ATL-S-E is sourced from the original manufacturer or authorized distributors?
All HZK4ATL-S-E 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 HZK4ATL-S-E meets industry standards.
7.What is the process for return or replacement of HZK4ATL-S-E?
All HZK4ATL-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK4ATL-S-E, 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 HZK4ATL-S-E part is unused and in its original packaging.
Return procedure for HZK4ATL-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZK4ATL-S-E Tags
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MMSZ5231B-7-F
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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