My Inquiry
My Account
Renesas HZ5BLLTA-E
- Part No.:
- HZ5BLLTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ5BLLTA-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZ5BLLTA-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at low current (IZ = 0.5 mA), with nominal Zener voltage 4.6–5.0 V, dynamic impedance 380 Ω (typ.), and temperature coefficient –0.02 to –0.05 mV/°C. It is used in precision analog front-ends, sensor biasing, and low-power voltage regulation where stable knee behavior below 1 mA is critical.
For engineers reviewing the HZ5BLLTA-E datasheet, HZ5BLLTA-E pinout, HZ5BLLTA-E application, or HZ5BLLTA-E equivalent, key selection criteria include its sharp breakdown knee at IZ = 0.001–0.5 mA, low noise in sub-100 nA reverse current range, DO-35 package compatibility, and suitability for battery-powered instrumentation requiring minimal quiescent current.
Technical Context
The HZ5BLLTA-E employs a planar diffusion structure to achieve semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA, enabling stable reference operation far below conventional Zener test currents. Its hard-knee characteristic minimizes voltage hysteresis during low-current transitions.
Designed for low-noise operation, it delivers ∆VZ1 ≤ 0.5 V (between 0.05 mA and 0.5 mA) and ∆VZ2 ≤ 0.6 V (between 0.001 mA and 0.05 mA), with typical ZZK = 50 Ω at IZK = 0.5 µA - confirming superior low-current impedance over standard Zeners.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.6–5.0 V at IZ = 0.5 mA - defines stable reference point for low-current bias networks |
| Dynamic Impedance (ZZT) | 380 Ω typ. at IZT = 3.0 mA - ensures minimal output voltage shift under load variation |
| Reverse Current (IR) | ≤100 nA at VR = 1.0 V - enables ultra-low leakage in high-impedance sensing nodes |
| Temperature Coefficient (γZ) | –0.02 to –0.05 mV/°C - supports <±1 mV drift over –25°C to +75°C ambient |
| Power Dissipation (Pd) | 250 mW max at Ta = 25°C - constrains maximum continuous bias current to ~50 mA at 5 V |
| Junction Temperature (Tj) | 175°C max - allows operation in sealed enclosures or near heat sources without derating |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded, 2.0 mm diameter × 26.0 mm length, cathode identified by navy-blue band. Mass: 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference node | Connected to regulated output or bias point; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return | Typically tied to system ground or current-sink node; establishes reverse-bias condition |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee breakdown | VZ linearity maintained down to IZ = 1 nA - eliminates soft turn-on error in micropower references |
| Low dynamic impedance at low IZ | ZZK = 50 Ω max at IZK = 0.5 µA - improves regulation stability in nanoampere-biased circuits |
| Ultra-low noise | Approximately 1/10 lower than standard Zeners in 1 nA–1 mA range - reduces RMS noise in precision ADC references |
| Negative temperature coefficient | γZ = –0.02 to –0.05 mV/°C - enables predictable, compensatable drift in unregulated environments |
Applications
| Portable Gas Sensor Biasing | Medical Pulse Oximeter Front-End |
|---|---|
Use Scenario: Provides stable 4.8 V bias to electrochemical gas sensor electrodes in battery-operated handheld detectors. IC Role / Device Role / Timing Role: Low-current Zener reference replacing higher-power shunt regulators to extend 200 mAh coin-cell life beyond 12 months. Use Value: Hard-knee behavior ensures consistent sensor sensitivity across 10–100 nA operating current, minimizing calibration drift. |
Use Scenario: Supplies precision bias to photodiode transimpedance amplifier in wearable pulse oximeters. IC Role / Device Role / Timing Role: Voltage reference for analog signal chain; operates continuously at 50 nA reverse current during sleep mode. Use Value: Ultra-low noise (<10 nV/√Hz) prevents SNR degradation in DC-coupled optical measurement paths. |
| Industrial RTD Signal Conditioning | Smart Meter Reference Subsystem |
Use Scenario: Sets excitation voltage for 3-wire Pt100 RTD bridges in DIN-rail mounted temperature transmitters. IC Role / Device Role / Timing Role: Primary reference for 24-bit delta-sigma ADC; shares same thermal environment as bridge. Use Value: Matched negative γZ partially compensates for RTD's positive α, reducing net system drift by ~30%. |
Use Scenario: Generates stable 4.9 V reference for metrology-grade energy measurement ICs in Class 0.2 smart meters. IC Role / Device Role / Timing Role: Shunt reference in isolated auxiliary supply; operates at 200 µA to minimize self-heating. Use Value: ∆VZ2 ≤ 0.6 V ensures <0.012% full-scale error contribution over 0.001–0.05 mA current range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C4V7 (ON Semiconductor) | Zener voltage 4.7 V ±5%, ZZT = 70 Ω at 5 mA, no guaranteed low-IZ linearity or ZZK spec | Higher power dissipation (500 mW), less suitable for <100 µA bias networks | Prefer when higher test current and lower impedance at 5 mA are required; not recommended for nanoampere operation |
| MMSZ4704T1G (ON Semiconductor) | SOD-123 package, VZ = 4.7 V ±5%, ZZT = 90 Ω at 5 mA, IR = 1 µA at 3.76 V | Surface-mount only; lacks documented hard-knee performance below 10 µA | Choose for space-constrained PCBs where DO-35 axial leads are impractical; verify knee sharpness per lot |
Compared with BZX55C4V7 and MMSZ4704T1G, the HZ5BLLTA-E uniquely guarantees hard-knee behavior and low ZZK down to 0.5 µA - making it the only option among the three validated for stable reference operation in sub-microampere analog bias circuits.
Availability
HZ5BLLTA-E is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, and smart meter reference subsystems requiring stable component supply with long-lifecycle support and traceable sourcing.
Supply support for HZ5BLLTA-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 advanced SoCs for industrial, automotive, and infrastructure markets.
The HZ-LL Series was designed specifically for low-noise, hard-knee Zener reference applications in battery-powered and high-precision analog systems - targeting use cases where conventional Zeners exhibit excessive knee softness or noise at microampere currents.
FAQ
What is the guaranteed Zener voltage tolerance for HZ5BLLTA-E at 0.5 mA?
The HZ5BLLTA-E has a specified Zener voltage range of 4.6 V to 5.0 V when tested at IZ = 0.5 mA, representing a ±4.3% tolerance centered on 4.8 V. This tolerance is verified per Renesas REJ03G0183-0300 Rev.3.00 and applies to all units shipped under this part number. The HZ5BLLTA-E does not specify tighter binning or extended tolerance grades.
Does HZ5BLLTA-E support operation below 1 µA reverse current?
Yes - the HZ5BLLTA-E exhibits semi-logarithmic VZ–IZ linearity down to 1 nA, with documented ∆VZ2 ≤ 0.6 V between 0.001 mA and 0.05 mA. Its ZZK = 50 Ω (max) at IZK = 0.5 µA confirms usable regulation even in nanoampere-biased circuits, unlike standard Zeners that lose regulation below 10 µA. This behavior is intrinsic to the HZ5BLLTA-E's planar diffusion process.
Is HZ5BLLTA-E RoHS compliant and lead-free?
Yes - the HZ5BLLTA-E meets EU RoHS Directive requirements and is manufactured as a lead-free device. Renesas confirms compliance in its environmental documentation and product change notices. The DO-35 glass package contains no restricted substances above threshold limits, and the HZ5BLLTA-E carries the appropriate RoHS marking per JEDEC standards.
Can HZ5BLLTA-E replace standard 4.7 V Zeners like 1N4732A in existing designs?
The HZ5BLLTA-E is not a direct drop-in replacement for 1N4732A due to differences in test current (0.5 mA vs. 20 mA), dynamic impedance (380 Ω vs. 14 Ω), and thermal characteristics. While both provide ~4.7 V, the HZ5BLLTA-E excels only in low-current, low-noise roles; substituting it into a 20 mA shunt regulator risks insufficient regulation. Use HZ5BLLTA-E only where design explicitly targets sub-100 µA operation.
What is the maximum allowable ambient temperature for continuous operation of HZ5BLLTA-E at full 250 mW dissipation?
The HZ5BLLTA-E must be operated below 25°C ambient temperature to sustain full 250 mW power dissipation continuously, per its derating curve in Figure 3 of REJ03G0183-0300. At 70°C ambient, maximum allowable Pd drops to ~150 mW. This limitation arises from the DO-35 package's thermal resistance (θJA ≈ 500°C/W); exceeding it risks junction temperature exceeding 175°C and permanent degradation of the HZ5BLLTA-E.
HZ5BLLTA-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:
- -
HZ5BLLTA-E FAQ
1.How can I place an order for HZ5BLLTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ5BLLTA-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 HZ5BLLTA-E reliable?
The price and inventory of HZ5BLLTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ5BLLTA-E is usually 5 days.
3.What payment methods are accepted for HZ5BLLTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ5BLLTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ5BLLTA-E?
HZ5BLLTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ5BLLTA-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 HZ5BLLTA-E?
For technical support, including HZ5BLLTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ5BLLTA-E requirements.
6.How does Aetrix verify that HZ5BLLTA-E is sourced from the original manufacturer or authorized distributors?
All HZ5BLLTA-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 HZ5BLLTA-E meets industry standards.
7.What is the process for return or replacement of HZ5BLLTA-E?
All HZ5BLLTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ5BLLTA-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 HZ5BLLTA-E part is unused and in its original packaging.
Return procedure for HZ5BLLTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ5BLLTA-E Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
