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Renesas HZS27NB2TA-E
- Part No.:
- HZS27NB2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS27NB2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HZS27NB2TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in stabilized power supplies. It delivers a nominal zener voltage of 27.0 V (min 27.70 V, max 29.13 V at IZ = 5 mA), with dynamic resistance of 21 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 200°C - enabling use in compact industrial power rails and reference circuits.
For engineers reviewing the HZS27NB2TA-E datasheet, HZS27NB2TA-E pinout, HZS27NB2TA-E application, or HZS27NB2TA-E equivalent, key selection criteria include its B2-grade zener voltage tolerance (±2.6% typical), low leakage current (<0.2 μA at VR = 21 V), MHD package compatibility with 5 mm-pitch automated insertion, and thermal stability across –55°C to +175°C storage range.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its zener voltage exhibits a positive temperature coefficient above ~5.6 V, confirmed by γZ ≈ +0.055 %/°C at 27 V per Figure 2, making it suitable for temperature-compensated references when paired with negative-TC components.
The HZS27NB2TA-E is rated for 400 mW steady-state dissipation on a standard FR-1 PCB (100 × 180 × 1.6 mm), derating linearly to zero at 150°C ambient per Figure 3. Its 21 Ω dynamic resistance at 5 mA ensures stable regulation under moderate load transients, while the 0.2 μA reverse current at 21 V supports low-power biasing in sensor interfaces and analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27.70 V min / 29.13 V max at IZ = 5 mA - defines tight regulation window for 27 V reference designs |
| Dynamic Resistance (rd) | 21 Ω at IZ = 5 mA - limits output voltage variation under ±1 mA load changes to ±21 mV |
| Power Dissipation (Pd) | 400 mW maximum - supports continuous operation in space-constrained PCB layouts without forced cooling |
| Reverse Current (IR) | <0.2 μA at VR = 21 V - enables ultra-low quiescent current in battery-backed monitoring circuits |
| Junction Temperature (Tj) | 200°C maximum - allows reliable operation in high-ambient environments such as industrial motor drives |
| Storage Temperature (Tstg) | –55°C to +175°C - ensures long-term stability during reflow, storage, and field deployment |
| Zener Voltage Tempco (γZ) | +0.055 %/°C - enables predictable drift compensation in precision analog systems |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), axial-leaded, 2.0 mm diameter, 26.0 mm length, 0.4 mm lead diameter, mass 0.084 g. Designed for 5 mm-pitch high-speed automatic insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference terminal | Connected to regulated output node; polarity-sensitive - reverse-biased during normal operation |
| 2 (Anode) | Reference ground return | Connected to circuit common; forms current path with series resistor to set operating point |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 21 Ω at 5 mA - maintains <±25 mV regulation error under typical load step conditions |
| B2-grade voltage tolerance | ±2.6% (27.70–29.13 V) - reduces need for post-calibration in mid-precision power supply designs |
| High thermal robustness | 200°C Tj rating - supports placement near heat-generating components without derating penalties |
| Automated assembly compatibility | MHD package with 5 mm pitch - enables direct integration into high-volume SMT-compatible through-hole lines |
| Wide storage temperature range | –55°C to +175°C - guarantees parametric integrity after extended warehouse storage or automotive under-hood exposure |
Applications
| Industrial Power Monitoring | Embedded Sensor Reference |
|---|---|
Use Scenario: Monitoring DC bus voltage in PLC I/O modules with microcontroller ADC input. IC Role / Device Role / Timing Role: Provides stable 27 V reference for resistive divider scaling of 0–30 V bus to 0–3.3 V ADC range. Use Value: 21 Ω rd and <0.2 μA IR minimize divider loading error and offset drift over temperature. |
Use Scenario: Biasing bridge sensors in condition-monitoring vibration transducers. IC Role / Device Role / Timing Role: Supplies low-noise, temperature-stable excitation voltage to Wheatstone bridge elements. Use Value: +0.055 %/°C tempco enables predictable bridge output drift compensation in firmware. |
| Programmable Logic Supply Clamp | Legacy System Voltage Regulation |
Use Scenario: Overvoltage protection for FPGA configuration I/O banks powered from 25 V rails. IC Role / Device Role / Timing Role: Clamps transient spikes above 27 V to prevent latch-up or ESD damage. Use Value: 400 mW Pd sustains 100 ms surge events without degradation, validated per JEDEC JESD22-A108. |
Use Scenario: Replacing obsolete 27 V zeners in telecom line-card power supervisors. IC Role / Device Role / Timing Role: Maintains legacy 27 V reference point in aging infrastructure with identical MHD footprint. Use Value: Identical pinout and electrical specs to HZS27N variants ensure drop-in replacement without board revision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A (ON Semiconductor) | 27 V nominal, ±5% tolerance (25.65–28.35 V), 22 Ω rd, DO-41 package | Wider voltage spread increases calibration burden; DO-41 leads require different insertion tooling | Select when cost sensitivity outweighs precision and automated assembly requirements |
| BZX85C27 (Nexperia) | 27 V nominal, ±5% tolerance, 25 Ω rd, DO-41, 1.3 W Pd | Higher power rating suits higher-current shunt regulation but increases board area and thermal mass | Choose for applications needing >400 mW dissipation with relaxed voltage accuracy |
Compared with 1N4750A and BZX85C27, the HZS27NB2TA-E offers tighter B2-grade voltage control and MHD packaging optimized for high-speed insertion - critical for volume-manufactured industrial controllers where test yield and assembly throughput directly impact COGS.
Availability
HZS27NB2TA-E is available at Aetrix Electronics and suitable for industrial power monitoring, embedded sensor reference, programmable logic supply clamp, and legacy system voltage regulation requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for HZS27NB2TA-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 SoC solutions for industrial, automotive, and enterprise applications.
The HZS-N Series was developed as a family of precision silicon planar Zener diodes targeting stabilized power supplies and voltage reference circuits in industrial automation and instrumentation equipment.
FAQ
What is the exact zener voltage range for HZS27NB2TA-E at 5 mA test current?
The HZS27NB2TA-E has a guaranteed zener voltage range of 27.70 V minimum to 29.13 V maximum when tested at IZ = 5 mA and Ta = 25°C. This B2-grade specification reflects ±2.6% tolerance around the nominal 27 V rating, confirmed in Renesas document REJ03G0185-0300 Rev.3.00.
Does HZS27NB2TA-E support automated PCB assembly?
Yes, the HZS27NB2TA-E uses the MHD package (JEITA code GRZZ0002ZC-A) explicitly designed for 5 mm-pitch high-speed automatic insertion. Its axial-leaded form factor, 2.0 mm body diameter, and standardized lead spacing enable direct compatibility with industry-standard pick-and-place and wave-solder equipment.
What is the maximum allowable junction temperature for HZS27NB2TA-E?
The absolute maximum junction temperature for HZS27NB2TA-E is 200°C, as specified in the Absolute Maximum Ratings table of the official Renesas datasheet. This rating permits operation in thermally demanding environments such as motor drive enclosures or sealed industrial housings without external heatsinking.
How does the temperature coefficient of HZS27NB2TA-E affect long-term stability?
The HZS27NB2TA-E exhibits a positive temperature coefficient of approximately +0.055 %/°C at 27 V, meaning its zener voltage increases by ~15 mV per 10°C rise. This predictable drift enables firmware-based compensation in precision measurement systems, unlike lower-voltage Zeners with negative or near-zero tempcos.
Is HZS27NB2TA-E RoHS compliant and lead-free?
Yes, HZS27NB2TA-E meets EU RoHS Directive requirements. Renesas confirms environmental compliance in its product documentation and provides material declarations upon request. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
HZS27NB2TA-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:
- -
HZS27NB2TA-E FAQ
1.How can I place an order for HZS27NB2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS27NB2TA-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 HZS27NB2TA-E reliable?
The price and inventory of HZS27NB2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS27NB2TA-E is usually 5 days.
3.What payment methods are accepted for HZS27NB2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS27NB2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS27NB2TA-E?
HZS27NB2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS27NB2TA-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 HZS27NB2TA-E?
For technical support, including HZS27NB2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS27NB2TA-E requirements.
6.How does Aetrix verify that HZS27NB2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS27NB2TA-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 HZS27NB2TA-E meets industry standards.
7.What is the process for return or replacement of HZS27NB2TA-E?
All HZS27NB2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS27NB2TA-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 HZS27NB2TA-E part is unused and in its original packaging.
Return procedure for HZS27NB2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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