My Inquiry
My Account
Renesas HZS5A3JTA-E
- Part No.:
- HZS5A3JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS5A3JTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZS5A3JTA-E from ROHM Semiconductor is a silicon epitaxial planar Zener diode designed for precision voltage regulation in stabilized power supplies, with a nominal zener voltage of 4.5–4.7 V at 5 mA, dynamic resistance ≤100 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 200°C.
For engineers reviewing the HZS5A3JTA-E datasheet, HZS5A3JTA-E pinout, HZS5A3JTA-E application, or HZS5A3JTA-E equivalent, key selection considerations include its 4.5–4.7 V zener range, low leakage current (≤5 µA at VR = 1.5 V), suitability for 5 mm-pitch automated insertion, and operation within industrial temperature limits (−55°C to +175°C storage).
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable reference voltage under varying load and line conditions. Its epitaxial planar structure ensures low zener impedance and tight voltage tolerance across grade A3 (±0.2 V at 5 mA), supporting high-accuracy regulation in feedback loops.
The device is optimized for DC-stabilized supplies-not AC or transient suppression-and exhibits a temperature coefficient of approximately −2.5 mV/°C near 4.6 V, as confirmed by Fig.2 in the HZS Series datasheet (ADE-208-120A(Z) Rev 1). It is not rated for surge or ESD protection applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.5–4.7 V at IZ = 5 mA - defines regulated output voltage window for feedback reference |
| Dynamic Resistance (rd) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under load current changes |
| Maximum Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets thermal derating limit for PCB layout and heatsinking |
| Reverse Leakage Current (IR) | ≤5 µA at VR = 1.5 V - guarantees low quiescent current in standby or low-power modes |
| Junction Temperature (Tj) | 200°C - enables reliable operation in high-ambient industrial environments |
| Storage Temperature (Tstg) | −55°C to +175°C - supports wide-range deployment including automotive under-hood and industrial control cabinets |
Pinout & Package
Package: DO-35 (glass axial leaded, 2.5 mm body diameter, 5 mm pitch compatible). Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes VZ |
| 2 (Unbanded End) | Anode | Typically grounded or connected to lower potential; current flows cathode→anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤100 Ω enables <1% output deviation under ±10 mA load step in LDO feedback paths |
| Grade A3 voltage tolerance | ±0.2 V at 5 mA allows precise 4.6 V reference without external trimming |
| 400 mW power rating | Supports up to 87 mA max continuous current at 4.6 V without thermal shutdown in free-air |
| 5 mm-pitch compatibility | Enables direct use with standard high-speed automatic insertion equipment (e.g., Fuji CP series) |
Applications
| Switching Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Provides stable 4.6 V reference for TL431-type shunt regulator input or comparator threshold. Use Value: Tight 4.5–4.7 V tolerance and low rd reduce output voltage drift across line/load/temperature. | Use Scenario: Biasing precision analog front-ends in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Supplies stable excitation voltage to bridge transducers or RTD interfaces. Use Value: Low leakage (<5 µA) prevents loading error on high-impedance sensor nodes. |
| Microcontroller Reset Circuit | Programmable Logic Supply Clamp |
Use Scenario: Generating clean reset signal during brown-out in embedded controllers operating from unregulated 5 V rails. IC Role / Device Role / Timing Role: Clamps reset line to 4.6 V until main supply exceeds threshold, enabling controlled startup. Use Value: Fast response to supply dips due to low capacitance and DC-tested characteristics. | Use Scenario: Limiting I/O voltage in FPGA configuration banks where 3.3 V logic must be protected from 5 V miswiring. IC Role / Device Role / Timing Role: Acts as passive clamp to prevent overvoltage damage during hot-plug or fault events. Use Value: 400 mW rating sustains short-duration 100 mA surges without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4732A (ON Semiconductor) | Zener voltage 4.7 V ±5%, Pd = 1 W, DO-41 package, rd ≈ 9 Ω | Higher power and lower impedance but larger footprint; requires PCB rework for DO-35 replacement | Preferred when higher surge capability or tighter regulation is needed and board space permits |
| BZX55-C4V7 (Vishay) | Zener voltage 4.7 V ±5%, Pd = 500 mW, DO-35 package, rd ≈ 70 Ω | Same package and pitch; slightly wider voltage tolerance but lower dynamic resistance than HZS5A3JTA-E | Drop-in substitute only if ±5% tolerance is acceptable and 70 Ω rd meets system stability requirements |
Compared with 1N4732A and BZX55-C4V7, HZS5A3JTA-E offers tighter grade-A3 voltage tolerance (±0.2 V), lower leakage, and guaranteed 5 mm-pitch compatibility-making it optimal for space-constrained, high-accuracy industrial power monitoring where consistent automated assembly is required.
Availability
HZS5A3JTA-E is available at Aetrix Electronics and suitable for switching power supply feedback, industrial sensor reference, microcontroller reset circuits, and programmable logic supply clamping requiring stable component supply across extended temperature ranges and high-volume manufacturing.
Supply support for HZS5A3JTA-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
ROHM Semiconductor is a Japanese semiconductor manufacturer specializing in analog, power, and sensor solutions for automotive, industrial, and consumer electronics.
HZS Series Zener diodes are part of ROHM's precision discrete portfolio, engineered specifically for stable voltage reference and regulation in compact, high-reliability power systems where low leakage and repeatable DC characteristics are critical.
FAQ
What is the exact zener voltage range for HZS5A3JTA-E?
HZS5A3JTA-E has a guaranteed zener voltage range of 4.5 V to 4.7 V at test current IZ = 5 mA, per grade A3 specification in the HZS Series datasheet (ADE-208-120A(Z) Rev 1). This ±0.2 V tolerance is tighter than standard ±5% Zeners and is validated under DC conditions.
Is HZS5A3JTA-E suitable for surface-mount assembly?
No, HZS5A3JTA-E uses a DO-35 glass axial package with radial leads and is designed for through-hole mounting. It is explicitly rated for 5 mm-pitch high-speed automatic insertion-not reflow or wave soldering-so SMT placement is not supported.
What is the maximum reverse leakage current for HZS5A3JTA-E?
The maximum reverse leakage current for HZS5A3JTA-E is 5 µA at reverse voltage VR = 1.5 V and Ta = 25°C. This low leakage supports energy-efficient designs in battery-backed or always-on sensor nodes where standby current must be minimized.
Can HZS5A3JTA-E replace a 4.7 V Zener with ±5% tolerance?
HZS5A3JTA-E can replace ±5% 4.7 V Zeners in applications requiring tighter regulation, but only if the circuit accommodates its narrower 4.5–4.7 V window. Its lower leakage and higher rd (≤100 Ω vs. ~70 Ω in some alternatives) may affect loop stability-verify with actual HZS5A3JTA-E measurements in the target design.
Does HZS5A3JTA-E meet automotive AEC-Q200 requirements?
No, HZS5A3JTA-E is not AEC-Q200 qualified. While its storage temperature range (−55°C to +175°C) overlaps with automotive grades, ROHM does not list this variant in AEC-Q200-certified HZS families. For automotive use, consult ROHM's AEC-Q200-compliant Zener offerings such as the UDZS series.
HZS5A3JTA-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:
- -
HZS5A3JTA-E FAQ
1.How can I place an order for HZS5A3JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS5A3JTA-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 HZS5A3JTA-E reliable?
The price and inventory of HZS5A3JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS5A3JTA-E is usually 5 days.
3.What payment methods are accepted for HZS5A3JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS5A3JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS5A3JTA-E?
HZS5A3JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS5A3JTA-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 HZS5A3JTA-E?
For technical support, including HZS5A3JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS5A3JTA-E requirements.
6.How does Aetrix verify that HZS5A3JTA-E is sourced from the original manufacturer or authorized distributors?
All HZS5A3JTA-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 HZS5A3JTA-E meets industry standards.
7.What is the process for return or replacement of HZS5A3JTA-E?
All HZS5A3JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS5A3JTA-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 HZS5A3JTA-E part is unused and in its original packaging.
Return procedure for HZS5A3JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS5A3JTA-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…
