My Inquiry
My Account
Renesas HZ12B1L-JTA-E
- Part No.:
- HZ12B1L-JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ12B1L-JTA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZ12B1L-JTA-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 12.4–12.9 V, 400 mW power dissipation, 80 Ω dynamic impedance at 0.5 mA, and DO-35 glass package with orange body and navy-blue cathode band. It serves in stabilized reference supplies for instrumentation and sensor signal conditioning.
For engineers reviewing the HZ12B1L-JTA-E datasheet, HZ12B1L-JTA-E pinout, HZ12B1L-JTA-E application, or HZ12B1L-JTA-E equivalent, key selection criteria include zener voltage tolerance (±0.5 V), low noise performance versus standard HZ series, thermal coefficient behavior near 12.6 V, and DO-35 mechanical compatibility in space-constrained PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a silicon planar junction. Its low-noise design reduces RMS noise by ~70–90% compared to legacy HZ-series diodes, achieved through optimized doping and junction geometry.
It exhibits a positive zener voltage temperature coefficient of approximately +0.04 %/°C (≈ +5 mV/°C) at 12.6 V, and maintains stable regulation up to 175°C junction temperature with ≤1 μA reverse leakage at VR = 10.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.4–12.9 V at IZ = 0.5 mA - defines tight regulation window for 12 V reference designs |
| Power Dissipation (Pd) | 400 mW - supports continuous operation at up to 31.7 mA at 12.6 V without derating below 25°C |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output voltage shift under load transients |
| Reverse Leakage (IR) | ≤1 μA at VR = 10.5 V - preserves low quiescent current in battery-powered references |
| Junction Temperature (Tj) | −55 to +175°C - enables deployment in industrial and automotive under-hood environments |
| Noise Reduction | ~70–90% lower than HZ series - directly improves SNR in ADC reference and op-amp bias networks |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A), orange body with navy-blue cathode band; dimensions per SC-40 standard (φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm); mass ≈ 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal of reverse-biased junction | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Low-side terminal referenced to ground or common | Serves as return path; determines current direction during zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise performance | Reduces RMS noise to 1/3–1/10 of standard HZ series-critical for high-resolution data acquisition |
| Stable low-impedance regulation | 80 Ω dynamic resistance at 0.5 mA enables <1 mV output shift under ±5 mA load variation |
| Wide zener voltage range support | Part of HZ-L family spanning 5.2–38 V-allows single-supplier sourcing across multiple reference voltages |
| Robust thermal capability | 175°C max junction temperature supports operation in sealed enclosures or near heat sources |
Applications
| High-Precision ADC Reference | Low-Drift Sensor Biasing |
|---|---|
Use Scenario: Providing stable 12.6 V reference for 24-bit sigma-delta ADCs in weigh scales and environmental monitors. IC Role / Device Role / Timing Role: Voltage reference source establishing full-scale input range and offset null point. Use Value: Low 1/f noise and 80 Ω rd minimize code flicker and gain drift over time and temperature. | Use Scenario: Supplying excitation voltage to precision RTD or strain-gauge bridges in industrial transmitters. IC Role / Device Role / Timing Role: Low-drift, low-noise bias generator ensuring bridge output linearity and repeatability. Use Value: ±0.5 V VZ tolerance and +0.04 %/°C TC enable <0.05% total error over −40 to +85°C ambient. |
| Programmable Power Supply Feedback | Optical Transceiver Bias Control |
Use Scenario: Setting output voltage in digitally adjustable lab-grade DC supplies via DAC-controlled feedback divider. IC Role / Device Role / Timing Role: Stable shunt reference anchoring feedback loop accuracy independent of op-amp offset. Use Value: 400 mW Pd allows direct use in 12 V/30 mA feedback paths without external amplification. | Use Scenario: Generating clean bias for laser diode drivers and TIA stages in SFP+ modules. IC Role / Device Role / Timing Role: Low-noise voltage reference suppressing RIN-induced jitter in optical link timing recovery. Use Value: 70–90% noise reduction versus HZ series directly lowers phase noise floor in 10 Gbps links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12LT1G | 12 V nominal, ±5% tolerance (±0.6 V), 300 mW Pd, 30 Ω rd at 5 mA, SOT-23 package | Higher current operation (5 mA test), surface-mount only, wider VZ tolerance | Preferred for high-volume SMT designs where tighter rd at higher IZ matters more than ultra-low noise |
| 1N4742A | 12 V nominal, ±5% tolerance (±0.6 V), 1 W Pd, 22 Ω rd at 21 mA, DO-41 package | Higher power, higher test current, larger axial package, no low-noise optimization | Chosen when thermal margin and cost dominate over noise and precision in non-critical references |
Compared with BZX84-C12LT1G and 1N4742A, the HZ12B1L-JTA-E delivers superior noise performance and tighter VZ tolerance in a compact DO-35 package but requires careful thermal management due to its 400 mW limit and lower test current specification.
Availability
HZ12B1L-JTA-E is available at Aetrix Electronics and suitable for high-precision ADC reference, low-drift sensor biasing, and programmable power supply feedback requiring stable component supply, long-term parametric consistency, and traceable lot-level documentation.
Supply support for HZ12B1L-JTA-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 leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and infrastructure markets.
The HZ-L Series is part of Renesas' precision analog portfolio, designed specifically for low-noise voltage reference applications where traditional Zener diodes introduce unacceptable signal integrity degradation.
FAQ
What is the exact zener voltage range specified for HZ12B1L-JTA-E?
The HZ12B1L-JTA-E has a guaranteed zener voltage range of 12.4 V to 12.9 V when tested at IZ = 0.5 mA and Ta = 25°C. This ±0.25 V tolerance around the nominal 12.65 V center point is tighter than standard 5% Zener diodes and supports high-accuracy reference design without trimming.
Does HZ12B1L-JTA-E have a documented noise performance advantage over standard Zener diodes?
Yes, the HZ12B1L-JTA-E datasheet explicitly states its noise level is approximately 1/3 to 1/10 that of the legacy HZ series. This low-noise characteristic is achieved through proprietary junction processing and is validated in Renesas' characterization-making HZ12B1L-JTA-E suitable for high-SNR applications like 24-bit ADC references.
What is the maximum allowable reverse current before HZ12B1L-JTA-E exceeds its power rating?
At 25°C ambient, the HZ12B1L-JTA-E can sustain up to 31.7 mA of reverse current (400 mW ÷ 12.6 V) before reaching its 400 mW power dissipation limit. Derating is required above 25°C per the "Power Dissipation vs. Ambient Temperature" curve on page 4 of the datasheet, with zero dissipation at ~125°C.
Is HZ12B1L-JTA-E compatible with lead-free reflow soldering processes?
Yes, the DO-35 glass package of HZ12B1L-JTA-E is rated for standard lead-free reflow profiles. The device's maximum junction temperature of 175°C exceeds typical Pb-free peak temperatures (260°C for 10 seconds), and Renesas confirms GRZZ0002ZB-A packaging meets JEDEC J-STD-020 moisture sensitivity level 1 requirements.
How does the temperature coefficient of HZ12B1L-JTA-E affect long-term stability in a 0–70°C operating range?
The HZ12B1L-JTA-E exhibits a zener voltage temperature coefficient of approximately +0.04 %/°C (≈ +5 mV/°C) near 12.6 V. Over a 0–70°C range, this results in a total drift of ~2.8 mV/°C × 70°C = ~196 mV, or ~1.55% of nominal VZ-a predictable, linear shift that can be compensated in system calibration routines.
HZ12B1L-JTA-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:
- -
HZ12B1L-JTA-E FAQ
1.How can I place an order for HZ12B1L-JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ12B1L-JTA-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 HZ12B1L-JTA-E reliable?
The price and inventory of HZ12B1L-JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ12B1L-JTA-E is usually 5 days.
3.What payment methods are accepted for HZ12B1L-JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ12B1L-JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ12B1L-JTA-E?
HZ12B1L-JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ12B1L-JTA-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 HZ12B1L-JTA-E?
For technical support, including HZ12B1L-JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ12B1L-JTA-E requirements.
6.How does Aetrix verify that HZ12B1L-JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ12B1L-JTA-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 HZ12B1L-JTA-E meets industry standards.
7.What is the process for return or replacement of HZ12B1L-JTA-E?
All HZ12B1L-JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ12B1L-JTA-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 HZ12B1L-JTA-E part is unused and in its original packaging.
Return procedure for HZ12B1L-JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ12B1L-JTA-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…
