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Renesas HZK5ATR-S-E
- Part No.:
- HZK5ATR-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
HZK5ATR-S-E.pdf
- Description:
- DIODE ZENER 4.5V 500MW LLD
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
HZK5ATR-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 4.5 V (typical), with ±0.2 V tolerance (Grade A), 500 mW power dissipation, 1.5 V maximum dynamic impedance at 5 mA test current, and operates within –55°C to +175°C storage temperature range - used in precision reference and biasing applications for industrial control modules.
For engineers reviewing the HZK5ATR-S-E datasheet, HZK5ATR-S-E pinout, HZK5ATR-S-E application, or HZK5ATR-S-E equivalent, key selection criteria include zener voltage accuracy, low leakage (<5 µA at 0.5 V), thermal coefficient (–2.5 mV/°C), LLD surface-mount package compatibility, and compliance with Renesas Standard-grade quality for office equipment and industrial electronics.
Technical Context
The HZK5ATR-S-E employs a planar epitaxial junction structure optimized for stable reverse breakdown behavior under DC bias. Its zener voltage is specified at 5 mA test current with tight Grade A tolerance (4.3–4.7 V), and it exhibits low dynamic resistance (≤100 Ω) and minimal temperature drift (–2.5 mV/°C at 4.5 V).
This device operates as a two-terminal shunt regulator without external biasing or control logic. It requires no supporting circuitry beyond series current limiting and is rated for 175°C junction temperature, making it suitable for thermally constrained PCB layouts where passive voltage referencing is needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3–4.7 V at IZ = 5 mA - defines precise clamping threshold for low-voltage reference rails. |
| Power Dissipation (Pd) | 500 mW - supports continuous operation in compact SMT footprints without forced cooling. |
| Dynamic Resistance (rd) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under load transients. |
| Reverse Leakage (IR) | ≤5 µA at VR = 0.5 V - guarantees low standby current in battery-backed or energy-sensitive designs. |
| Junction Temperature (Tj) | 175°C maximum - enables reliable operation in high-ambient industrial environments. |
| Package Type | LLD (leadless low-profile diode) - 1.4 mm diameter, surface-mount compatible with high-density reflow assembly. |
Pinout & Package
Package: LLD (leadless low-profile diode), circular surface-mount package with cathode band marking; dimensions: φ1.4 ± 0.1 mm, height ~0.35 mm (typical); mass: 0.027 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Cathode | Connected to higher-potential node; reverse-biased terminal where regulated voltage appears relative to anode. |
| 2 | Anode | Connected to ground or lower-potential reference; completes current path during zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤100 Ω at 5 mA - maintains stable reference voltage despite input ripple or load shifts. |
| Wide zener voltage spectrum | 1.9–38 V across HZK family - allows single-source procurement for multi-rail systems using HZK5ATR-S-E for 4.5 V tier. |
| High-temperature capability | 175°C max junction temperature - supports use in sealed enclosures or near heat-generating components. |
| LLD surface-mount package | φ1.4 mm footprint - enables automated placement and reduces board area vs. axial-leaded alternatives. |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Circuit Reference |
|---|---|
|
Use Scenario: Stabilizing bias voltage for op-amp-based bridge sensor amplifiers in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 4.5 V reference for ADC input scaling and offset calibration. Use Value: Enables <±0.5% full-scale measurement accuracy over –25°C to +70°C ambient due to low tempco and tight VZ tolerance. |
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Zener-clamped voltage divider sets Brown-Out Detection (BOD) trip point at 4.5 V before regulator dropout. Use Value: Prevents spurious resets during line sags by maintaining stable trigger level independent of LDO output variance. |
| Office Equipment Power Sequencing | Test & Measurement Instrument Calibration |
|
Use Scenario: Coordinating startup timing between analog front-end and digital core in multifunction printers. IC Role / Device Role / Timing Role: Voltage supervisor reference for discrete comparator-based power-good detection. Use Value: Ensures 4.5 V rail reaches regulation before enabling downstream 1.8 V FPGA core via MOSFET gate control. |
Use Scenario: Providing traceable DC reference in handheld multimeter analog section. IC Role / Device Role / Timing Role: Primary shunt reference for autoranging voltmeter input attenuator calibration. Use Value: Delivers <5 ppm/°C effective stability over 0–40°C operating range when paired with matched resistors. |
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 |
|---|---|---|---|
| BZX55C4V3 (ON Semiconductor) | Same 4.3–4.7 V Grade C tolerance, but 500 mW rating in DO-35 glass package; higher leakage (≤10 µA @ 1 V). | Through-hole mounting required; less suitable for high-density SMT production. | Select if legacy through-hole assembly or higher surge immunity is prioritized over board space. |
| MMSZ4685 (Diodes Inc.) | SOD-123 package, 4.3–4.9 V tolerance, 500 mW, 90 Ω rd; RoHS-compliant, AEC-Q200 not claimed. | Compatible LLD footprint not guaranteed; requires layout verification for pad compatibility. | Choose for cost-sensitive consumer designs where automotive qualification is unnecessary. |
Compared with BZX55C4V3 and MMSZ4685, the HZK5ATR-S-E offers verified LLD surface-mount compatibility, Renesas Standard-grade qualification for industrial equipment, and tighter low-current dynamic impedance specification - making it preferred for space-constrained, thermally demanding, and long-lifecycle embedded systems.
Availability
HZK5ATR-S-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset supervision, and office equipment power sequencing requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.
Supply support for HZK5ATR-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and enterprise applications.
The HZK Series was developed by Renesas as a family of precision silicon Zener diodes targeting stabilized power supply and reference functions in Standard-grade applications - emphasizing reliability, thermal robustness, and surface-mount compatibility for high-volume electronics manufacturing.
FAQ
What is the exact zener voltage range for HZK5ATR-S-E at 5 mA test current?
The HZK5ATR-S-E has a guaranteed zener voltage range of 4.3 V to 4.7 V when tested at IZ = 5 mA and Ta = 25°C, corresponding to Grade A tolerance per the Renesas HZK Series datasheet Rev.3.00. This 0.4 V window ensures predictable clamping behavior in precision reference circuits where HZK5ATR-S-E is deployed.
Is HZK5ATR-S-E RoHS compliant and lead-free?
Yes, HZK5ATR-S-E meets RoHS Directive 2011/65/EU requirements. Renesas confirms lead-free termination and halogen-free packaging for the LLD package variant, as documented in their environmental compliance statements. The device contains no intentionally added lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE - consistent with standard manufacturing for HZK5ATR-S-E.
What is the maximum allowable reverse current before zener conduction begins in HZK5ATR-S-E?
At VR = 0.5 V, the reverse leakage current for HZK5ATR-S-E is specified as ≤5 µA (max). This low leakage ensures minimal parasitic loading on upstream sources and supports accurate voltage division in high-impedance reference networks where HZK5ATR-S-E serves as a stable node.
Can HZK5ATR-S-E be used in automotive applications?
No - HZK5ATR-S-E is classified as Renesas Standard-grade, intended for computers, office equipment, and industrial robots. It is not qualified to AEC-Q200 or rated for automotive temperature ranges (–40°C to +125°C). For automotive use, Renesas offers separate High Quality-grade Zener diodes; HZK5ATR-S-E must not be applied in vehicle subsystems without explicit written approval.
What does the "TR-S-E" suffix indicate in HZK5ATR-S-E?
The "TR-S-E" suffix denotes tape-and-reel packaging (TR), standard-grade quality (S), and RoHS-compliant, lead-free finish (E). This identifies the specific ordering variant of the HZK5A Zener diode in LLD package, distinguishing it from bulk or non-RoHS versions - ensuring correct procurement of HZK5ATR-S-E for automated SMT lines.
HZK5ATR-S-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- DO-213AC, MINI-MELF, SOD-80
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.5 V
- Tolerance:
- ±4.44%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1.5 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LLD
HZK5ATR-S-E FAQ
1.How can I place an order for HZK5ATR-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK5ATR-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 HZK5ATR-S-E reliable?
The price and inventory of HZK5ATR-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 HZK5ATR-S-E is usually 5 days.
3.What payment methods are accepted for HZK5ATR-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK5ATR-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK5ATR-S-E?
HZK5ATR-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK5ATR-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 HZK5ATR-S-E?
For technical support, including HZK5ATR-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK5ATR-S-E requirements.
6.How does Aetrix verify that HZK5ATR-S-E is sourced from the original manufacturer or authorized distributors?
All HZK5ATR-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 HZK5ATR-S-E meets industry standards.
7.What is the process for return or replacement of HZK5ATR-S-E?
All HZK5ATR-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK5ATR-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 HZK5ATR-S-E part is unused and in its original packaging.
Return procedure for HZK5ATR-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZK5ATR-S-E Tags
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