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Renesas HZ15-3LTD-E
- Part No.:
- HZ15-3LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ15-3LTD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZ15-3LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 14.9–15.5 V at 0.5 mA test current, 80 Ω dynamic impedance, 400 mW power dissipation, and DO-35 glass package with navy-blue cathode band. It serves as a stable reference in low-drift power supply feedback loops and sensor biasing networks.
For engineers reviewing the HZ15-3LTD-E datasheet, HZ15-3LTD-E pinout, HZ15-3LTD-E application, or HZ15-3LTD-E equivalent, key selection criteria include zener voltage tolerance (±0.6 V), temperature coefficient (−0.04 %/°C at ~15 V), low noise performance (1/3–1/10 that of standard HZ series), and DO-35 mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a silicon planar junction. Its low dynamic resistance (80 Ω) ensures minimal output voltage variation under load changes, while its −0.04 %/°C temperature coefficient enables stable regulation across −55°C to +175°C ambient range.
The HZ15-3LTD-E is rated for 400 mW maximum power dissipation at 25°C, with derating to zero at 175°C junction temperature. Its reverse leakage current is limited to 1 μA at VR = 12 V, supporting high-impedance sensing and low-quiescent-current designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.9–15.5 V at IZ = 0.5 mA - defines precise regulation point for feedback networks |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures <12 mV output shift per 1 mA load change |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB footprints without forced cooling |
| Temperature Coefficient (γZ) | −0.04 %/°C - enables <±0.6% total drift over −40°C to +85°C industrial range |
| Reverse Leakage (IR) | 1 μA max at VR = 12 V - preserves accuracy in high-impedance divider and reference buffer circuits |
| Junction Temperature (Tj) | 175°C max - allows reliable operation in thermally constrained enclosures or near heat sources |
Pinout & Package
Package: DO-35 glass axial lead package (RENESAS code GRZZ0002ZB-A, JEITA code SC-40), 2.0 mm diameter × 4.2 mm body length, navy-blue cathode band, orange body color, 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated output or op-amp inverting input; polarity critical for correct biasing |
| 2 (Anode) | Ground or return path | Provides current sink path; must be tied to stable low-impedance ground for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | 1/3–1/10 noise vs. standard HZ series - reduces voltage reference jitter in ADC/DAC references |
| Wide zener voltage range support | 14.9–15.5 V tolerance window - accommodates ±2% system-level calibration margins |
| Stable temperature behavior | −0.04 %/°C coefficient - minimizes thermal drift in unregulated environments like industrial sensors |
| High-reliability glass package | DO-35 with navy cathode band - ensures long-term hermeticity and solder-joint integrity in reflow/reflow-compatible assembly |
| Low leakage specification | ≤1 μA at 12 V reverse - enables use in µA-level bias networks without degrading source impedance |
Applications
| Industrial Power Supply Reference | Medical Sensor Biasing |
|---|---|
Use Scenario: Precision linear regulator feedback network in 15 V industrial SMPS output stage. IC Role / Device Role / Timing Role: Zener reference providing stable 15 V setpoint to error amplifier input. Use Value: 80 Ω dynamic impedance maintains ±5 mV regulation accuracy under 60 mA load transients. |
Use Scenario: Bias voltage source for bridge-based pressure transducers in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-noise DC reference for Wheatstone bridge excitation. Use Value: Reduced diode noise prevents signal-to-noise degradation in sub-µV-level analog front-ends. |
| Test Equipment Voltage Standard | Automotive ECU Reference |
Use Scenario: Calibration reference in handheld multimeter internal DAC reference chain. IC Role / Device Role / Timing Role: Stable 15 V source for 16-bit DAC full-scale adjustment. Use Value: −0.04 %/°C tempco ensures <±0.1% reading drift across 0–50°C operating range. |
Use Scenario: Secondary reference for microcontroller ADC in engine control unit auxiliary monitoring circuit. IC Role / Device Role / Timing Role: Zener clamp protecting ADC input against transient overvoltage. Use Value: 400 mW rating withstands 100 ms load dump pulses without parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A (ON Semiconductor) | Zener voltage 14 V ±5%, rd = 14 Ω, Pd = 1 W, DO-41 package | Higher power but wider voltage tolerance and higher noise than HZ15-3LTD-E | Select when higher surge capability is required and tighter voltage tolerance is not critical |
| BZX55C15 (Vishay) | Zener voltage 15 V ±5%, rd = 30 Ω, Pd = 500 mW, DO-35 package, no low-noise optimization | Same package but lacks specified low-noise design; γZ not characterized below ±0.07 %/°C | Select for cost-sensitive general-purpose regulation where noise and tempco are secondary |
Compared with 1N4744A and BZX55C15, the HZ15-3LTD-E delivers superior voltage stability (±0.6 V vs. ±0.75 V), lower noise, and tighter temperature coefficient-making it preferred for metrology-grade references despite lower power rating.
Availability
HZ15-3LTD-E is available at Aetrix Electronics and suitable for industrial power supplies, medical sensor modules, test equipment calibration circuits, and automotive ECU auxiliary references requiring stable component supply and long-lifecycle support.
Supply support for HZ15-3LTD-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 HZ-L Series was designed specifically for low-noise, high-stability voltage reference applications in precision analog systems-addressing demand for improved regulation accuracy and reduced thermal drift over legacy Zener families.
FAQ
What is the exact zener voltage range for HZ15-3LTD-E at 0.5 mA?
The HZ15-3LTD-E has a guaranteed zener voltage range of 14.9 V to 15.5 V when tested at IZ = 0.5 mA and Ta = 25°C. This ±0.6 V tolerance supports tight regulation requirements in feedback networks without external trimming. The HZ15-3LTD-E datasheet (REJ03G0182-0300 Rev.3.00) confirms this specification on page 3.
Is HZ15-3LTD-E RoHS compliant?
Yes, HZ15-3LTD-E complies with EU RoHS Directive requirements. Renesas Electronics confirms environmental compliance for the HZ-L Series in accordance with applicable regulations, including restriction of lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE. Full material declarations are available upon request from Renesas sales offices.
What is the maximum junction temperature rating for HZ15-3LTD-E?
The HZ15-3LTD-E has a maximum junction temperature (Tj) rating of 175°C, as specified in the Absolute Maximum Ratings table on page 2 of the REJ03G0182-0300 datasheet. This allows operation in high-temperature environments such as enclosed industrial controllers or under-hood automotive modules when properly heatsinked.
Does HZ15-3LTD-E have a specified noise performance metric?
Yes-the HZ-L Series datasheet states that diode noise is "approximately 1/3–1/10 lower than the HZ series." While no quantitative spectral density value is given, this comparative statement confirms intentional low-noise process optimization. The HZ15-3LTD-E inherits this characteristic, making it suitable for precision analog references where noise directly impacts measurement resolution.
Can HZ15-3LTD-E be used in surface-mount designs?
No-HZ15-3LTD-E uses a DO-35 axial glass package with radial leads, intended exclusively for through-hole mounting. It is not compatible with SMT reflow processes due to glass-body thermal limitations and lead geometry. For SMT alternatives, consult Renesas' HZ-L Series SMD variants or equivalent Zener arrays in SOIC or SOD-123 packages.
HZ15-3LTD-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:
- -
HZ15-3LTD-E FAQ
1.How can I place an order for HZ15-3LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ15-3LTD-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 HZ15-3LTD-E reliable?
The price and inventory of HZ15-3LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ15-3LTD-E is usually 5 days.
3.What payment methods are accepted for HZ15-3LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ15-3LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ15-3LTD-E?
HZ15-3LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ15-3LTD-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 HZ15-3LTD-E?
For technical support, including HZ15-3LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ15-3LTD-E requirements.
6.How does Aetrix verify that HZ15-3LTD-E is sourced from the original manufacturer or authorized distributors?
All HZ15-3LTD-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 HZ15-3LTD-E meets industry standards.
7.What is the process for return or replacement of HZ15-3LTD-E?
All HZ15-3LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ15-3LTD-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 HZ15-3LTD-E part is unused and in its original packaging.
Return procedure for HZ15-3LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ15-3LTD-E Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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