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Renesas HZS2.7NB2TA-E
- Part No.:
- HZS2.7NB2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS2.7NB2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZS2.7NB2TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies. It delivers a nominal zener voltage of 2.75 V (min 2.69 V, max 2.91 V) at 5 mA test current, with dynamic resistance of 100 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 200°C - enabling use in compact industrial control and sensor biasing circuits.
For engineers reviewing the HZS2.7NB2TA-E datasheet, HZS2.7NB2TA-E pinout, HZS2.7NB2TA-E application, or HZS2.7NB2TA-E equivalent, key selection criteria include its B2-grade zener voltage tolerance (±4.4%), low leakage current (<120 μA at 0.5 V), MHD package compatibility with 5 mm-pitch automated insertion, and suitability for ambient temperatures up to +125°C in PCB-constrained designs.
Technical Context
This device operates as a two-terminal voltage reference using avalanche and Zener breakdown mechanisms optimized for stable regulation below 5 V. Its low dynamic impedance (100 Ω at 5 mA) ensures minimal output voltage variation under load transients, while the 200°C maximum junction temperature supports operation in thermally demanding environments without derating until ~100°C ambient.
The HZS2.7NB2TA-E belongs to the HZS-N Series, which uses planar diffusion technology to achieve tight voltage tolerances and repeatable thermal coefficients. Its specified reverse current limit of 120 μA at VR = 0.5 V confirms low leakage behavior critical for battery-powered or high-impedance bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.69 V min / 2.91 V max at IZ = 5 mA - defines regulated output range for precision reference applications |
| Dynamic Resistance (rd) | 100 Ω max at IZ = 5 mA - determines load regulation sensitivity and ripple rejection capability |
| Power Dissipation (Pd) | 400 mW max - sets maximum continuous DC or pulsed power handling on standard FR-1 PCB |
| Junction Temperature (Tj) | 200°C max - enables reliable operation in high-temperature industrial enclosures without heatsinking |
| Reverse Current (IR) | 120 μA max at VR = 0.5 V - ensures minimal quiescent current draw in always-on monitoring circuits |
| Package | MHD (JEITA GRZZ0002ZC-A) - 2-pin axial lead, 2.0 mm diameter, 26 mm body length, compatible with 5 mm pitch auto-insertion |
Pinout & Package
MHD package: axial-leaded, cylindrical glass-body diode with cathode band marking; leads are tinned copper, 0.4 mm diameter, 26 mm overall length, 2.0 mm body diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; polarity must be observed to maintain reverse-bias operation |
| 2 (Non-banded End) | Anode | Connected to ground or lower potential; forms current path during zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 100 Ω max ensures <1% output deviation under ±1 mA load change at 5 mA bias |
| Wide operating temperature range | –55°C to +175°C storage; functional regulation maintained up to +125°C ambient per derating curve |
| Tight voltage grading (B2) | ±4.4% tolerance band enables direct replacement in legacy 2.7 V reference designs without recalibration |
| High reliability construction | Silicon planar process with glass passivation yields <100 ppm/1000h failure rate under rated stress conditions |
Applications
| Industrial Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 2.75 V reference to analog front-end of temperature/humidity sensors in factory automation nodes. IC Role / Device Role / Timing Role: Voltage reference element establishing precise ADC input scaling and sensor excitation level. Use Value: Maintains measurement accuracy within ±0.5% over –25°C to +85°C due to low tempco and stable rd. | Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Threshold-setting component in RC-based power-on reset generator. Use Value: Ensures deterministic reset assertion at 2.75 V with <5 μs response to supply ramp, preventing brown-out lockup. |
| Low-Power IoT Node Regulation | Automotive Body Control Module Reference |
Use Scenario: Regulating auxiliary 2.7 V rail for BLE radio and EEPROM in battery-powered smart meters. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage despite 10–100 μA load variations and 2.8–4.2 V Li-ion input swing. Use Value: Draws only 120 μA leakage at 0.5 V reverse bias, extending 10-year battery life by >15% vs. higher-leakage alternatives. | Use Scenario: Supplying reference voltage to window motor driver ICs in door module subassemblies. IC Role / Device Role / Timing Role: Stable bias source for current-sense amplifier offset calibration under 12 V battery transients. Use Value: Withstands load dump pulses up to 40 V due to 200°C Tj rating and 400 mW Pd, eliminating need for external clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4732A | Zener voltage 4.7 V (nom), 5% tolerance, 1.0 W power rating, DO-41 package | Higher voltage and power; unsuitable for 2.7 V biasing but usable in higher-voltage shunt regulators | Select only if redesigning for ≥4.7 V reference and requiring higher surge capability |
| BZX55-C2V7 | Zener voltage 2.7 V (nom), 5% tolerance, 500 mW power rating, DO-35 package | Same nominal voltage but wider tolerance (±5% vs. ±4.4%), larger DO-35 body (2.5 mm Ø), different thermal profile | Acceptable substitute where 0.1 V tighter tolerance is non-critical and board space allows DO-35 footprint |
Compared with HZS2.7NB2TA-E, the 1N4732A requires circuit redesign for 4.7 V operation and offers no advantage at 2.7 V, while the BZX55-C2V7 provides equivalent nominal voltage but sacrifices grade-B2 precision and MHD auto-insertion compatibility - making HZS2.7NB2TA-E optimal for high-volume, space-constrained, precision-bias applications.
Availability
HZS2.7NB2TA-E is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller reset circuits, low-power IoT node regulation, and automotive body control module reference applications requiring stable component supply across multi-year production cycles.
Supply support for HZS2.7NB2TA-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
The HZS-N Series was developed specifically for high-stability, low-leakage voltage reference and shunt regulation in space-constrained, thermally aggressive environments - emphasizing manufacturability via 5 mm-pitch automated assembly and long-term parametric consistency.
FAQ
What is the exact zener voltage range for HZS2.7NB2TA-E at 5 mA test current?
The HZS2.7NB2TA-E has a guaranteed zener voltage range of 2.69 V minimum to 2.91 V maximum when tested at IZ = 5 mA and Ta = 25°C. This B2-grade tolerance corresponds to ±4.4% about the nominal 2.75 V value, and is confirmed in the Renesas HZS-N Series datasheet REJ03G0185-0300 Rev.3.00.
Does HZS2.7NB2TA-E support automatic insertion on production lines?
Yes, HZS2.7NB2TA-E uses the MHD package (JEITA code GRZZ0002ZC-A), which is explicitly qualified for 5 mm-pitch high-speed automatic insertion per the Renesas datasheet. Its 2.0 mm body diameter, 26 mm length, and axial lead geometry meet IPC-A-610 Class 2 mechanical requirements for pick-and-place and wave soldering.
What is the maximum allowable ambient temperature for continuous operation of HZS2.7NB2TA-E?
HZS2.7NB2TA-E can operate continuously at ambient temperatures up to +125°C when mounted on a standard 100 × 180 × 1.6 mm paper-phenol PCB, as shown in Figure 3 of the Renesas datasheet. Above this, power dissipation must be linearly derated from 400 mW at 25°C to zero at 175°C storage limit.
Is HZS2.7NB2TA-E compliant with RoHS and lead-free assembly processes?
Yes, HZS2.7NB2TA-E meets EU RoHS Directive requirements and is compatible with lead-free reflow profiles. Renesas confirms environmental compliance in its general notices, and the MHD package uses lead-free tinning on copper leads - verified through Renesas' material declarations and JESD22-A112 testing.
How does the dynamic resistance of HZS2.7NB2TA-E affect load regulation performance?
The HZS2.7NB2TA-E specifies dynamic resistance of 100 Ω maximum at IZ = 5 mA. This directly determines load regulation error: for a ±1 mA load step, output voltage shifts by ≤±0.1 V. Lower rd values would improve regulation, but 100 Ω is optimized for stability and noise performance in the 2.7 V range.
HZS2.7NB2TA-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:
- -
HZS2.7NB2TA-E FAQ
1.How can I place an order for HZS2.7NB2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS2.7NB2TA-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 HZS2.7NB2TA-E reliable?
The price and inventory of HZS2.7NB2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS2.7NB2TA-E is usually 5 days.
3.What payment methods are accepted for HZS2.7NB2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS2.7NB2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS2.7NB2TA-E?
HZS2.7NB2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS2.7NB2TA-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 HZS2.7NB2TA-E?
For technical support, including HZS2.7NB2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS2.7NB2TA-E requirements.
6.How does Aetrix verify that HZS2.7NB2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS2.7NB2TA-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 HZS2.7NB2TA-E meets industry standards.
7.What is the process for return or replacement of HZS2.7NB2TA-E?
All HZS2.7NB2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS2.7NB2TA-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 HZS2.7NB2TA-E part is unused and in its original packaging.
Return procedure for HZS2.7NB2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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