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Renesas HZS11B2TA-E
- Part No.:
- HZS11B2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS11B2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:25,000
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Product details
Overview
HZS11B2TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies, with a nominal zener voltage of 11.6–11.9 V at 5 mA, 7.5 Ω dynamic resistance, and 400 mW power dissipation in the MHD package. It serves as a shunt reference in voltage monitor circuits, overvoltage clamp stages, and feedback networks for linear regulators.
For engineers reviewing the HZS11B2TA-E datasheet, HZS11B2TA-E pinout, HZS11B2TA-E application, or HZS11B2TA-E equivalent, key selection criteria include its tight zener voltage tolerance (±0.3 V), low temperature coefficient (−0.04 %/°C typical), DC-tested characteristics, and suitability for 5 mm-pitch automated insertion in industrial control and consumer power modules.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage by conducting reverse current above its specified breakdown threshold. Its planar junction construction ensures consistent breakdown behavior and low leakage (<1 µA at VR = 9.5 V).
The HZS11B2TA-E is characterized under DC test conditions only, with zener voltage specified at IZ = 5 mA, dynamic resistance measured at the same bias, and thermal derating defined per Fig.3 - power dissipation drops linearly to zero at 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.6–11.9 V at IZ = 5 mA - defines precise clamping threshold for 12 V rail monitoring |
| Dynamic Resistance (rd) | 7.5 Ω max at IZ = 5 mA - ensures minimal output voltage shift under load transients |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Reverse Leakage (IR) | ≤1 µA at VR = 9.5 V - guarantees negligible standby current in battery-backed circuits |
| Junction Temperature (Tj) | 200°C maximum - enables reliable operation in high-ambient industrial environments |
| Temperature Coefficient (γZ) | −0.04 %/°C typical - minimizes drift across −40°C to +85°C operating range |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), molded plastic, 2-pin axial lead, 2.0 mm diameter × 26.0 mm length, 0.084 g mass, cathode band marked in lake blue.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated voltage node; reverse-biased terminal where zener breakdown occurs |
| 2 | Anode | Connected to circuit ground or lower potential reference; completes shunt current path |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 7.5 Ω max enables fast transient response in feedback loops without external compensation |
| DC-tested electrical parameters | Guarantees repeatability and eliminates AC-related measurement ambiguity in production testing |
| 5 mm pitch compatibility | Supports high-speed automatic insertion on standard SMT-compatible through-hole assembly lines |
| Wide zener voltage spectrum | Part of HZS Series covering 1.6–38 V - allows single-source procurement across multiple voltage rails |
Applications
| Industrial Power Monitor | Consumer SMPS Feedback |
|---|---|
|
Use Scenario: Monitoring 12 V DC bus in PLC I/O modules to trigger undervoltage lockout before processor reset. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable trip point for comparator input. Use Value: Tight 11.6–11.9 V tolerance ensures accurate detection within ±2.5% of nominal rail, reducing false triggers. |
Use Scenario: Providing primary-side feedback voltage to optocoupler in offline AC/DC flyback converters. IC Role / Device Role / Timing Role: Precision zener reference setting secondary-side regulation threshold via isolation barrier. Use Value: Low 7.5 Ω dynamic resistance maintains regulation accuracy despite optocoupler CTR variation and line/load changes. |
| Automotive Body Control Unit Clamp | Medical Instrument Reference |
|
Use Scenario: Clamping transients on 12 V supply lines in BCMs exposed to load dump pulses up to 35 V. IC Role / Device Role / Timing Role: Passive overvoltage protector diverting surge energy away from downstream LDOs and microcontrollers. Use Value: 400 mW rating sustains 100 ms pulses at 25°C ambient, meeting ISO 7637-2 Pulse 5a requirements with margin. |
Use Scenario: Generating stable 11.8 V reference for analog front-end calibration in portable ECG monitors. IC Role / Device Role / Timing Role: Low-drift voltage source for ADC reference divider network in battery-powered diagnostics. Use Value: −0.04 %/°C temperature coefficient limits full-scale error to <0.3% over 0–50°C clinical operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12LT1G | 12.05–12.35 V VZ, 250 mW Pd, SOT-23 package | Suitable for space-constrained PCBs but requires rework for thermal management at >150 mW | Select when board area is critical and average power <150 mW; verify layout thermal relief for sustained dissipation |
| 1N4742A | 12 V nominal VZ, ±5% tolerance, 1 W Pd, DO-41 package | Looser tolerance and higher power rating make it appropriate for non-critical clamping, not precision reference | Choose for cost-sensitive overvoltage protection where ±5% VZ and robust surge handling outweigh accuracy needs |
Compared with BZX84-C12LT1G and 1N4742A, the HZS11B2TA-E delivers tighter voltage tolerance and lower dynamic impedance in a through-hole package optimized for automated insertion - ideal for industrial power monitoring where accuracy and process compatibility are jointly prioritized.
Availability
HZS11B2TA-E is available at Aetrix Electronics and suitable for industrial power monitors, consumer SMPS feedback circuits, and automotive body control unit clamps requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZS11B2TA-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 HZS Series is part of Renesas' discrete portfolio targeting precision voltage regulation in stabilized power supplies - engineered for reliability, tight parametric control, and compatibility with high-volume manufacturing processes.
FAQ
What is the exact zener voltage range for HZS11B2TA-E at 5 mA test current?
The HZS11B2TA-E has a guaranteed zener voltage range of 11.6 V to 11.9 V when tested at IZ = 5 mA and Ta = 25°C, per page 4 of Renesas document REJ03G0184-0500 Rev.5.00. This 0.3 V span reflects Grade B2 tolerance within the HZS11 family and is verified using DC test methodology.
Is HZS11B2TA-E rated for automotive applications?
HZS11B2TA-E is classified as a Standard-grade Renesas product, intended for industrial, office, and consumer equipment per Quality Grade definitions in the datasheet. It is not qualified to AEC-Q101 or rated for automotive use; Renesas explicitly restricts its use in transportation systems without prior written consent.
What is the maximum allowable ambient temperature for full 400 mW operation of HZS11B2TA-E?
HZS11B2TA-E delivers its full 400 mW power dissipation only at Ta = 25°C, as shown in Fig.3 on page 5 of the datasheet. Derating begins linearly above 25°C, reaching zero dissipation at 125°C ambient - meaning sustained 400 mW operation requires active thermal management below 25°C ambient or reduced power at higher temperatures.
Does HZS11B2TA-E have a specified zener temperature coefficient?
Yes - the HZS11B2TA-E exhibits a typical zener voltage temperature coefficient (γZ) of −0.04 %/°C, as plotted in Fig.2 on page 5 of the datasheet. This negative coefficient indicates VZ decreases slightly with rising temperature, enabling predictable drift compensation in multi-stage references.
What packaging format does HZS11B2TA-E use, and is it compatible with automated assembly?
HZS11B2TA-E uses the MHD package (JEITA code GRZZ0002ZC-A), a 2-pin axial-leaded molded plastic case with 5 mm pitch spacing. The datasheet explicitly states it is "suitable for 5mm-pitch high speed automatic insertion," confirming compatibility with standard through-hole placement equipment.
HZS11B2TA-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:
- -
HZS11B2TA-E FAQ
1.How can I place an order for HZS11B2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS11B2TA-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 HZS11B2TA-E reliable?
The price and inventory of HZS11B2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS11B2TA-E is usually 5 days.
3.What payment methods are accepted for HZS11B2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS11B2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS11B2TA-E?
HZS11B2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS11B2TA-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 HZS11B2TA-E?
For technical support, including HZS11B2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS11B2TA-E requirements.
6.How does Aetrix verify that HZS11B2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS11B2TA-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 HZS11B2TA-E meets industry standards.
7.What is the process for return or replacement of HZS11B2TA-E?
All HZS11B2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS11B2TA-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 HZS11B2TA-E part is unused and in its original packaging.
Return procedure for HZS11B2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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