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Renesas HZ27-1L-E
- Part No.:
- HZ27-1L-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ27-1L-E.pdf
- Description:
- DIODE ZENER 27V 400MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:6,666
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Product details
Overview
HZ27-1L-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 25.2–26.6 V, 400 mW power dissipation, 24.0 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package. It serves in stabilized reference supplies for instrumentation amplifiers and sensor signal conditioning where noise suppression is critical.
For engineers reviewing the HZ27-1L-E datasheet, HZ27-1L-E pinout, HZ27-1L-E application, or HZ27-1L-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, temperature coefficient behavior near zero crossing (~0.02 %/°C at ~27 V), and suitability for low-current (<1 mA) reference designs requiring stable DC bias.
Technical Context
The HZ27-1L-E operates as a two-terminal shunt regulator with cathode-anode polarity, optimized for DC-biased low-noise applications. Its zener voltage is specified at 0.5 mA test current, with maximum reverse leakage ≤1 μA at VR = 20.9 V and dynamic resistance measured under DC conditions per REJ03G0182-0300.
It belongs to the HZ-L Series featuring navy-blue cathode band marking and orange body color, fabricated using silicon planar process technology to achieve reduced flicker noise and improved long-term stability versus legacy HZ-series diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.2–26.6 V at IZ = 0.5 mA - defines stable reference point for low-drift bias networks |
| Dynamic Resistance (rd) | 24.0 Ω max at IZ = 0.5 mA - ensures minimal output impedance variation under small-signal perturbations |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Junction Temperature (Tj) | −55 to +175°C - enables deployment in industrial environments with wide ambient swings |
| Reverse Leakage (IR) | ≤1 μA at VR = 20.9 V - minimizes parasitic current draw in high-impedance reference nodes |
| Noise Reduction | ≈1/3–1/10 vs. HZ series - directly lowers broadband voltage noise in precision analog front-ends |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A, Renesas code SC-40), 2.0 mm diameter × 26.0 mm length, orange body with navy-blue cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal of Zener junction | Connected to regulated voltage node; polarity must be observed to maintain breakdown conduction |
| 2 (Anode) | Low-side terminal of Zener junction | Typically grounded or tied to lowest system potential; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Planar silicon construction reduces flicker (1/f) noise by factor of 3–10 vs. standard HZ series |
| Tight VZ tolerance | ±0.7 V at 27 V nominal - enables accurate calibration without post-trim in mid-precision references |
| Low dynamic impedance | 24.0 Ω max at 0.5 mA - maintains regulation accuracy under varying load currents up to ~100 μA |
| Stable temperature coefficient | ~0.02 %/°C near 27 V - minimizes drift-induced error in temperature-sensitive measurement circuits |
| High-reliability glass package | DO-35 hermetic seal with 0.13 g mass - resists moisture ingress and supports >10-year shelf life |
Applications
| Instrumentation Amplifier Reference | Thermocouple Cold-Junction Compensation |
|---|---|
Use Scenario: Providing stable bias voltage to op-amp input stages in portable multimeters and data loggers operating across −25°C to +70°C. IC Role / Device Role / Timing Role: Shunt voltage reference establishing common-mode level for differential input amplification. Use Value: Low 1/f noise prevents baseline wander in sub-mV signal measurements; 24 Ω rd limits gain error to <0.05% under 100 μA load variation. |
Use Scenario: Generating precise 25.5 V reference for cold-junction compensation circuitry in industrial thermocouple transmitters. IC Role / Device Role / Timing Role: Zener-based voltage source feeding ratiometric ADC reference and linearization DAC. Use Value: ±0.7 V VZ tolerance allows factory calibration within ±0.5°C accuracy; DO-35 package withstands reflow and conformal coating. |
| Photodiode Bias Supply | Medical Sensor Signal Conditioning |
Use Scenario: Supplying reverse bias to high-impedance photodiodes in optical pulse oximeters with battery-powered operation. IC Role / Device Role / Timing Role: Low-noise DC voltage source maintaining constant depletion region width in photodiode junction. Use Value: 1 μA max leakage avoids dark current interference; low noise preserves SNR in picoampere-level photocurrent detection. |
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., strain gauges) in portable ECG electrode modules. IC Role / Device Role / Timing Role: Precision shunt regulator setting bridge excitation level independent of supply rail fluctuations. Use Value: 400 mW Pd supports 2.5 V @ 100 mA auxiliary rails; orange/DO-35 visual ID simplifies manual assembly QA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27LT1G | 27 V nominal, ±5% tolerance (±1.35 V), 150 Ω rd, SOT-23 package, 350 mW Pd | SMT-compatible but higher impedance and looser tolerance; unsuitable for <100 μA load stability requirements | Select only if board space constraints prohibit axial DO-35 and noise budget allows ≥3× higher impedance |
| 1N5254B | 27 V nominal, ±5% tolerance, 35 Ω rd, DO-35 package, 500 mW Pd, no low-noise optimization | Higher 1/f noise and wider VZ spread; acceptable for non-critical power rail clamping but not precision analog refs | Choose when cost sensitivity outweighs noise and drift performance; verify thermal derating above 70°C ambient |
Compared with BZX84-C27LT1G and 1N5254B, the HZ27-1L-E delivers superior low-noise regulation (3–10× lower), tighter VZ control (±0.7 V vs. ±1.35 V/±1.35 V), and lower dynamic impedance (24 Ω vs. 150 Ω/35 Ω), making it uniquely suited for metrology-grade analog references where signal integrity dominates cost or footprint concerns.
Availability
HZ27-1L-E is available at Aetrix Electronics and suitable for instrumentation amplifier reference, thermocouple cold-junction compensation, and photodiode bias supply applications requiring stable component supply, traceable lot history, and long-lifecycle support.
Supply support for HZ27-1L-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 is a global semiconductor manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs, with core expertise in automotive, industrial, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise voltage reference applications in precision analog systems, addressing the need for reduced flicker noise and improved thermal stability over legacy Zener families.
FAQ
What is the zener voltage range for HZ27-1L-E?
The HZ27-1L-E has a specified zener voltage range of 25.2 V to 26.6 V at a test current of 0.5 mA, per Renesas datasheet REJ03G0182-0300. This 1.4 V span reflects manufacturing tolerance for the "1L" variant within the HZ27 family and ensures predictable regulation behavior in low-drift reference designs where absolute accuracy is balanced against production yield.
Is HZ27-1L-E compatible with lead-free reflow soldering?
Yes, the HZ27-1L-E uses a DO-35 glass package qualified for standard lead-free reflow profiles, including peak temperatures up to 260°C for 10 seconds. Its glass-to-metal hermetic seal and axial lead construction ensure mechanical integrity and electrical reliability after JEDEC J-STD-020-compliant soldering, making HZ27-1L-E suitable for modern RoHS-compliant production lines.
How does the noise performance of HZ27-1L-E compare to standard Zener diodes?
The HZ27-1L-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to its optimized silicon planar process and low-noise junction design. This reduction directly improves signal-to-noise ratio in precision analog circuits-such as those using HZ27-1L-E as a reference for 24-bit delta-sigma ADCs-where broadband and flicker noise would otherwise limit effective resolution.
What is the maximum reverse leakage current for HZ27-1L-E?
The maximum reverse leakage current for HZ27-1L-E is 1 μA at a reverse voltage (VR) of 20.9 V, as specified in the Electrical Characteristics table on page 2 of REJ03G0182-0300. This low leakage supports high-impedance node stability in battery-powered sensor interfaces and ensures minimal error contribution in microampere-level bias networks using HZ27-1L-E.
Can HZ27-1L-E be used in place of HZ27-2L or HZ27-3L?
No-HZ27-1L-E is not interchangeable with HZ27-2L or HZ27-3L without circuit validation. Each suffix denotes a distinct zener voltage bin: HZ27-1L = 25.2–26.6 V, HZ27-2L = 26.2–27.6 V, HZ27-3L = 27.2–28.6 V. Substituting HZ27-1L-E for another variant introduces up to ±1.4 V offset in reference voltage, potentially violating system accuracy specs unless recalibrated.
HZ27-1L-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- HZ-L
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±2.59%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 24 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ27-1L-E FAQ
1.How can I place an order for HZ27-1L-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ27-1L-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 HZ27-1L-E reliable?
The price and inventory of HZ27-1L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ27-1L-E is usually 5 days.
3.What payment methods are accepted for HZ27-1L-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ27-1L-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ27-1L-E?
HZ27-1L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ27-1L-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 HZ27-1L-E?
For technical support, including HZ27-1L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ27-1L-E requirements.
6.How does Aetrix verify that HZ27-1L-E is sourced from the original manufacturer or authorized distributors?
All HZ27-1L-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 HZ27-1L-E meets industry standards.
7.What is the process for return or replacement of HZ27-1L-E?
All HZ27-1L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ27-1L-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 HZ27-1L-E part is unused and in its original packaging.
Return procedure for HZ27-1L-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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