My Inquiry
My Account
Renesas HZ27-3JTD
- Part No.:
- HZ27-3JTD
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ27-3JTD.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZ27-3JTD from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 27.2–28.6 V at 0.5 mA test current, 400 mW power dissipation, 150 Ω dynamic impedance, and DO-35 glass package with orange body and navy blue cathode band.
For engineers reviewing the HZ27-3JTD datasheet, HZ27-3JTD pinout, HZ27-3JTD application, or HZ27-3JTD equivalent, key selection criteria include zener voltage tolerance (±2.5%), temperature coefficient (−0.04 %/°C), low noise performance (1/3–1/10 of standard HZ series), and suitability for stabilized reference supplies in instrumentation and sensor front-ends.
Technical Context
The HZ27-3JTD operates as a two-terminal shunt voltage reference, using planar diffusion technology to achieve stable breakdown with minimal flicker noise. Its low leakage (<1 μA at VR = 22.3 V) and tight zener voltage distribution support high-accuracy biasing in low-current analog stages.
Designed for DC-regulated operation, it exhibits a negative temperature coefficient of −0.04 %/°C and maintains zener impedance below 150 Ω across its rated test current range (0.5–1 mA), enabling predictable load regulation in feedback networks without active compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27.2–28.6 V at IZ = 0.5 mA - defines stable reference point for precision biasing |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact PCB layouts with natural convection cooling |
| Dynamic Resistance (rd) | 150 Ω max at IZ = 0.5 mA - ensures minimal output voltage shift under varying load current |
| Reverse Leakage (IR) | ≤1 μA at VR = 22.3 V - preserves accuracy in high-impedance reference nodes |
| Temperature Coefficient (γZ) | −0.04 %/°C - enables predictable drift compensation in wide-temperature industrial environments |
| Junction Temperature (Tj) | 175 °C - allows reliable operation in thermally constrained enclosures |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body with navy blue cathode band; total mass 0.13 g; dimensions: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Breakdown terminal | Connected to regulated positive rail; reverse-biased operation requires external current limiting resistor |
| 2 (Anode) | Reference ground node | Typically tied to system ground or common return; establishes reference potential for downstream circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | 1/3–1/10 lower noise than standard HZ series - critical for audio preamps and sensor signal conditioning |
| Tight zener voltage tolerance | ±2.5% over 27.2–28.6 V range - reduces need for post-calibration trimming in production |
| Low dynamic impedance | 150 Ω max - improves line and load regulation in unregulated input scenarios |
| High junction temperature rating | 175 °C - enables use in automotive under-hood or industrial motor-control environments |
Applications
| Instrumentation Reference | Audio Signal Conditioning |
|---|---|
Use Scenario: Precision voltage reference for 24-bit delta-sigma ADC biasing in portable multimeters. IC Role / Device Role / Timing Role: Shunt reference providing stable 27.8 V node for analog front-end gain-setting and offset calibration. Use Value: Low noise and <1 μA leakage prevent measurement drift and quantization error in high-Z input paths. | Use Scenario: DC bias supply for JFET-input op-amp stages in studio microphone preamplifiers. IC Role / Device Role / Timing Role: Low-noise zener reference establishing clean virtual ground and gain-setting node. Use Value: 1/10 noise level vs. standard Zeners suppresses audible hiss in 120 dB SNR signal chains. |
| Sensor Excitation | Industrial Power Monitoring |
Use Scenario: Stable excitation source for 350 Ω strain gauge bridges in load cell transmitters. IC Role / Device Role / Timing Role: Zener-regulated current source driver maintaining constant bridge voltage despite supply ripple. Use Value: ±2.5% VZ tolerance and −0.04 %/°C TC enable <0.05% full-scale error over −40 to +85 °C. | Use Scenario: Overvoltage detection threshold in 24 V DC power distribution units for factory automation. IC Role / Device Role / Timing Role: Precision clamp protecting microcontroller GPIOs during transient surges. Use Value: 400 mW Pd and 150 Ω rd allow robust clamping without thermal runaway during 100 ms surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX85C27 (Nexperia) | VZ = 27 V ±5%, rd = 40 Ω typical, Pd = 1.3 W, DO-41 package | Higher power handling but wider VZ tolerance and no low-noise specification | Select when higher surge capability is required and noise is not critical |
| 1N5259B (ON Semiconductor) | VZ = 27 V ±5%, rd = 45 Ω typical, Pd = 500 mW, DO-35 package | Same package but lacks documented low-noise optimization and tighter TC | Choose for cost-sensitive designs where ±5% VZ and standard noise floor are acceptable |
Compared with BZX85C27 and 1N5259B, the HZ27-3JTD delivers superior noise performance and tighter voltage tolerance in the same DO-35 footprint, making it preferred for metrology-grade references-though its 400 mW rating requires careful thermal design in high-ambient environments.
Availability
HZ27-3JTD is available at Aetrix Electronics and suitable for precision instrumentation, audio signal conditioning, sensor excitation, and industrial power monitoring requiring stable component supply and traceable sourcing.
Supply support for HZ27-3JTD 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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs for industrial, automotive, and infrastructure markets.
The HZ-L Series Zener diodes were developed specifically for low-noise, high-stability voltage reference applications in test equipment and precision analog systems-emphasizing reduced flicker noise and tight parametric control over legacy HZ-series parts.
FAQ
What is the exact zener voltage range specified for HZ27-3JTD?
The HZ27-3JTD has a guaranteed zener voltage range of 27.2 V to 28.6 V when tested at IZ = 0.5 mA and Ta = 25 °C. This 1.4 V span reflects ±2.5% tolerance around the nominal 27.9 V center point, verified per Renesas REJ03G0182-0300 Rev.3.00 test conditions. The HZ27-3JTD must be operated within this range to meet its specified dynamic resistance and temperature coefficient.
Does HZ27-3JTD support operation above 100 °C ambient temperature?
Yes, the HZ27-3JTD is rated for storage from −55 to +175 °C and junction temperature up to 175 °C. At 100 °C ambient, derated power dissipation drops to approximately 240 mW per Figure 3 in the datasheet. Proper PCB copper area and airflow ensure the HZ27-3JTD remains within safe operating limits-no additional heatsinking is required for typical 400 mW DC operation below 85 °C ambient.
How does the noise performance of HZ27-3JTD compare to standard Zener diodes?
The HZ27-3JTD achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to optimized planar diffusion and low-leakage junction design. This is confirmed in Renesas documentation as a family-level feature of the HZ-L Series. For low-frequency (<10 Hz) applications like strain gauge bridges or high-resolution ADC references, the HZ27-3JTD's noise reduction directly improves measurement repeatability and effective resolution.
Is HZ27-3JTD compatible with lead-free reflow soldering processes?
Yes, the HZ27-3JTD's DO-35 glass package and axial leads are rated for standard lead-free reflow profiles, including peak temperatures up to 260 °C for 10 seconds. The device's maximum junction temperature of 175 °C provides sufficient margin, and Renesas confirms compatibility in application notes for HZ-L Series assembly. Thermal shock resistance is validated per JEDEC J-STD-020, supporting automated manufacturing of the HZ27-3JTD without cracking or parameter shift.
What is the maximum reverse current specification for HZ27-3JTD at rated voltage?
The HZ27-3JTD specifies a maximum reverse leakage current (IR) of 1 μA when tested at VR = 22.3 V and Ta = 25 °C. This value is measured well below the zener knee and ensures minimal parasitic loading on high-impedance reference nodes. The low IR contributes to the HZ27-3JTD's stability in battery-powered precision instruments where quiescent current must remain sub-microampere.
HZ27-3JTD 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:
- -
HZ27-3JTD FAQ
1.How can I place an order for HZ27-3JTD through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ27-3JTD 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 HZ27-3JTD reliable?
The price and inventory of HZ27-3JTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ27-3JTD is usually 5 days.
3.What payment methods are accepted for HZ27-3JTD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ27-3JTD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ27-3JTD?
HZ27-3JTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ27-3JTD 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 HZ27-3JTD?
For technical support, including HZ27-3JTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ27-3JTD requirements.
6.How does Aetrix verify that HZ27-3JTD is sourced from the original manufacturer or authorized distributors?
All HZ27-3JTD 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 HZ27-3JTD meets industry standards.
7.What is the process for return or replacement of HZ27-3JTD?
All HZ27-3JTD units undergo pre-shipment inspection (PSI). If there is an issue with HZ27-3JTD, 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 HZ27-3JTD part is unused and in its original packaging.
Return procedure for HZ27-3JTD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ27-3JTD 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…
