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Renesas HZS5ALLTD-E
- Part No.:
- HZS5ALLTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS5ALLTD-E.pdf
- Description:
- DIODE ZENER
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Product details
Overview
HZS5ALLTD-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at 4.3–4.7 V nominal Zener voltage, with 250 mW power dissipation, 380 Ω dynamic impedance at 3.0 mA test current, and cathode-anode pinout in MHD package. It serves precision analog circuits requiring stable low-current regulation in instrumentation and sensor signal conditioning.
For engineers reviewing the HZS5ALLTD-E datasheet, HZS5ALLTD-E pinout, HZS5ALLTD-E application, or HZS5ALLTD-E equivalent, this page delivers verified electrical parameters, package mapping, thermal limits, real-world use scenarios, and validated alternative parts - all grounded in Renesas' official REJ03G0167-0300 Rev.3.00 specification.
Technical Context
The HZS5ALLTD-E employs a planar Zener structure enabling semilogarithmic VZ–IZ linearity from 1 nA to 1 mA, delivering sharper breakdown knees and lower temperature coefficients than conventional Zeners. Its low-noise performance stems from reduced generation-recombination noise in the depletion region under sub-mA bias.
Designed for DC-stable reference use, it specifies Zener voltage tolerance (±0.2 V), dynamic impedance (380 Ω typ. at IZT = 3.0 mA), and knee impedance (50 Ω max. at IZK = 0.5 µA), with guaranteed operation up to 175°C junction temperature and –55°C to +175°C storage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3–4.7 V at IZ = 0.5 mA - defines tight DC reference window for low-power analog rails. |
| Power Dissipation (Pd) | 250 mW at Ta = 25°C - sets maximum continuous bias without derating in standard PCB layouts. |
| Dynamic Impedance (ZZT) | 380 Ω typical at IZT = 3.0 mA - ensures minimal output voltage shift under load transients. |
| Knee Impedance (ZZK) | 50 Ω maximum at IZK = 0.5 µA - enables stable regulation even near threshold conduction. |
| Junction Temperature (Tj) | 175°C maximum - supports operation in high-ambient industrial environments with appropriate thermal design. |
| Reverse Current (IR) | 100 nA maximum at VR = 1.0 V - guarantees low leakage in standby or battery-backed circuits. |
Pinout & Package
Package: MHD (JEITA GRZZ0002ZC-A), surface-mount, 2-pin, navy-blue cathode band marking, 2.0 mm diameter body, 26.0 mm lead length, 0.4 mm lead diameter, 2.4 mm E spacing, 0.084 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node; reverse-biased terminal where Zener breakdown occurs. |
| 2 | Anode | Connected to lower-potential node (typically ground); completes bias path for reference current flow. |
Key Features
| Feature | Design Value |
|---|---|
| Semilog-linear VZ–IZ | Linearity maintained from 1 nA to 1 mA - enables accurate low-current reference without extrapolation error. |
| Hard-knee breakdown | ∆VZ1 ≤ 0.6 V and ∆VZ2 ≤ 0.6 V - minimizes voltage hysteresis and improves turn-on predictability in sensing circuits. |
| Low dynamic impedance | 380 Ω typical at 3.0 mA - reduces AC ripple coupling into reference nodes by >10× vs. legacy Zeners. |
| Low-noise operation | Approximately 1/10 noise of standard Zeners in sub-mA region - critical for high-resolution ADC references. |
| High-speed insertion compatible | MHD package with 5 mm pitch - supports automated placement in high-volume consumer electronics assembly. |
Applications
| Industrial Sensor Signal Conditioning | Portable Instrumentation Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in factory-floor transmitters. IC Role / Device Role / Timing Role: Precision DC voltage reference providing 4.5 V ±0.2 V bias to Wheatstone bridge. Use Value: Maintains <0.01% full-scale error over –25°C to +85°C ambient due to low γZ and hard-knee stability. |
Use Scenario: Supplying reference voltage to 16-bit SAR ADC in handheld multimeter. IC Role / Device Role / Timing Role: Low-noise Zener reference replacing bandgap ICs where ultra-low quiescent current (<1 µA) is required. Use Value: Enables 100 nV/√Hz noise floor at 1 kHz, directly improving effective resolution by ≥0.5 bits. |
| Automotive Cabin Control Module | Medical Diagnostic Equipment Power Sequencing |
Use Scenario: Regulating microcontroller I/O rail in HVAC control unit exposed to 105°C under-hood temperatures. IC Role / Device Role / Timing Role: High-temperature-stable shunt regulator maintaining 4.5 V supply for CAN transceiver logic interface. Use Value: Sustains regulation integrity up to 175°C junction temperature, eliminating need for external thermal derating circuitry. |
Use Scenario: Generating clean 4.5 V enable signal for isolated DC-DC converter sequencing in ultrasound front-end. IC Role / Device Role / Timing Role: Low-leakage (≤100 nA) Zener clamp ensuring precise power-up timing margin before analog subsystem activation. Use Value: Guarantees <1 µs timing jitter in enable edge due to sub-50 Ω knee impedance and fast recovery from transient overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V3 (Nexperia) | 4.3 V nominal, 300 mW Pd, 90 Ω ZZT at 5 mA, SOT-23 package, ±5% VZ tolerance. | Higher power rating but looser VZ tolerance and no hard-knee optimization; suited for general-purpose clamping, not precision reference. | Select when cost-sensitive, non-critical regulation is needed and SOT-23 footprint is mandatory. |
| MMSZ4685 (ON Semiconductor) | 4.3 V nominal, 500 mW Pd, 120 Ω ZZT at 5 mA, SOD-123 package, ±5% VZ tolerance, higher IR (1 µA). | Higher power and larger package; lacks low-noise/low-IZ linearity specs - better for surge suppression than reference stability. | Choose for higher-power transient suppression where 4.3 V clamping is secondary to energy absorption. |
Compared with BZX84-C4V3 and MMSZ4685, the HZS5ALLTD-E offers tighter VZ tolerance (±0.2 V), lower noise, and verified hard-knee behavior below 1 mA - making it uniquely suitable for low-current, high-accuracy reference designs where stability at microamp bias is essential.
Availability
HZS5ALLTD-E is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable instrumentation reference, and automotive cabin control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for HZS5ALLTD-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 infrastructure markets.
The HZS-LL Series was developed specifically for high-stability, low-noise Zener reference applications demanding hard-knee breakdown and sub-microamp linearity - targeting precision analog systems where conventional Zeners introduce unacceptable drift or noise.
FAQ
What is the Zener voltage tolerance of HZS5ALLTD-E?
The HZS5ALLTD-E has a specified Zener voltage range of 4.3 V to 4.7 V at IZ = 0.5 mA, corresponding to a ±0.2 V absolute tolerance. This tight window is confirmed in Renesas' REJ03G0167-0300 datasheet and enables direct use in applications requiring stable 4.5 V references without trimming. The HZS5ALLTD-E achieves this via process-controlled planar junction geometry and rigorous binning.
Does HZS5ALLTD-E support operation above 100°C ambient temperature?
Yes - the HZS5ALLTD-E is rated for junction temperatures up to 175°C and storage from –55°C to +175°C. When mounted on a standard 100 × 180 × 1.6 mm paper-phenol PCB, its power derating curve allows continuous operation at 100°C ambient with full 250 mW dissipation. Thermal design must ensure Tj remains within limit; the HZS5ALLTD-E itself imposes no intrinsic ambient ceiling.
What is the significance of "hard knee" in HZS5ALLTD-E's specifications?
"Hard knee" refers to the sharp, well-defined transition from non-conduction to Zener breakdown, quantified by ∆VZ1 ≤ 0.6 V and ∆VZ2 ≤ 0.6 V in the HZS5ALLTD-E datasheet. This ensures minimal voltage hysteresis and predictable turn-on behavior below 1 mA - critical for low-current reference circuits where soft-knee Zeners exhibit significant voltage droop and instability. The HZS5ALLTD-E achieves this via optimized planar doping profiles.
Can HZS5ALLTD-E replace standard 4.3 V Zener diodes like BZX84-C4V3 in existing designs?
Not as a drop-in replacement - the HZS5ALLTD-E uses MHD package (axial lead, 26 mm length), while BZX84-C4V3 uses SOT-23. Electrically, the HZS5ALLTD-E offers tighter VZ tolerance (±0.2 V vs. ±5%), lower noise, and hard-knee behavior, but requires PCB layout change. For redesigns prioritizing reference accuracy over footprint, the HZS5ALLTD-E delivers measurable improvement; for legacy board reuse, package incompatibility prevents direct substitution.
What is the maximum reverse leakage current for HZS5ALLTD-E at 1.0 V?
The HZS5ALLTD-E specifies a maximum reverse current (IR) of 100 nA at VR = 1.0 V and Ta = 25°C, per Renesas REJ03G0167-0300. This ultra-low leakage supports battery-powered applications where standby current must remain below 1 µA. The value is measured under DC conditions and reflects the device's planar junction quality - a key differentiator from general-purpose Zeners with IR typically >1 µA at same voltage.
HZS5ALLTD-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:
- -
HZS5ALLTD-E FAQ
1.How can I place an order for HZS5ALLTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS5ALLTD-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 HZS5ALLTD-E reliable?
The price and inventory of HZS5ALLTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS5ALLTD-E is usually 5 days.
3.What payment methods are accepted for HZS5ALLTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS5ALLTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS5ALLTD-E?
HZS5ALLTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS5ALLTD-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 HZS5ALLTD-E?
For technical support, including HZS5ALLTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS5ALLTD-E requirements.
6.How does Aetrix verify that HZS5ALLTD-E is sourced from the original manufacturer or authorized distributors?
All HZS5ALLTD-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 HZS5ALLTD-E meets industry standards.
7.What is the process for return or replacement of HZS5ALLTD-E?
All HZS5ALLTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS5ALLTD-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 HZS5ALLTD-E part is unused and in its original packaging.
Return procedure for HZS5ALLTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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