My Inquiry
My Account
Renesas HZS2B1TD-E
- Part No.:
- HZS2B1TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS2B1TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZS2B1TD-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 1.9–2.1 V (Grade B1), 400 mW power dissipation, and low dynamic resistance of ≤100 Ω at 5 mA test current. It serves as a reference or clamp device in bias networks, sensor excitation circuits, and voltage-level translation in industrial control modules.
For engineers reviewing the HZS2B1TD-E datasheet, HZS2B1TD-E pinout, HZS2B1TD-E application, or HZS2B1TD-E equivalent, this part is selected for stable low-voltage reference generation where tight VZ tolerance (±0.1 V), low leakage (<25 µA at 0.5 V), and thermal stability across −55°C to +175°C storage range are required.
Technical Context
The HZS2B1TD-E employs a silicon planar junction structure optimized for low zener impedance and minimal temperature coefficient drift near 2 V - a region where γZ crosses zero, enabling inherently stable reference performance without external compensation. Its construction supports high-speed automatic insertion on 5 mm-pitch PCBs.
Rated for 200°C junction temperature and packaged in MHD (JEITA GRZZ0002ZC-A), the device operates under DC test conditions per JEDEC standards, with reverse current specified at ≤25 µA when VR = 0.5 V and dynamic resistance measured at IZ = 5 mA. It is classified as "Standard" grade per Renesas quality policy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 1.9–2.1 V at IZ = 5 mA - defines precise clamping threshold for 2 V rail stabilization |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact SMD-compatible through-hole packages without forced cooling |
| Dynamic Resistance (rd) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | ≤25 µA at VR = 0.5 V - enables low-quiescent-current biasing in battery-powered sensors |
| Junction Temperature (Tj) | 200°C maximum - allows reliable operation in high-ambient industrial environments (e.g., motor drives, PLC I/O) |
| Storage Temperature | −55°C to +175°C - compatible with reflow, wave, and hand-soldering processes and extended field deployment |
Pinout & Package
Package: MHD (JEITA GRZZ0002ZC-A), axial leaded, 2.0 mm diameter × 26.0 mm length, paper phenol body, cathode band marked in lake blue. Mass: 0.084 g (typ).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener reference terminal | Connected to regulated node; polarity must be observed to maintain reverse-bias conduction |
| 2 (Anode) | Reference return path | Typically tied to ground or common reference plane; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | rd ≤ 100 Ω enables stable regulation under varying load currents in feedback loops |
| Wide VZ spectrum (1.6–38 V) | Supports system-level voltage scaling across multiple rails without redesigning reference topology |
| 5 mm-pitch insertion compatibility | Enables automated assembly in legacy through-hole production lines without tooling change |
| Low leakage current | IR ≤ 25 µA at 0.5 V minimizes error in high-impedance reference dividers and sensor bridges |
Applications
| Industrial Sensor Biasing | Microcontroller Reset Clamping |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Zener reference diode establishing fixed 2.0 V bias point for ratiometric measurement accuracy. Use Value: Tight ±0.1 V VZ tolerance and low tempco near 2 V reduce calibration drift over −40°C to +85°C operating range. |
Use Scenario: Clamping reset line voltage to prevent false triggering during brown-out conditions in 3.3 V microcontroller systems. IC Role / Device Role / Timing Role: Low-leakage shunt regulator holding reset pin below logic-high threshold until supply stabilizes. Use Value: 25 µA max reverse current avoids loading weak pull-up networks while ensuring fast release at VCC rise. |
| Portable Instrument Reference | Legacy Power Supply Feedback |
Use Scenario: Generating precision 2.0 V reference for 12-bit ADC in handheld multimeter front-end circuitry. IC Role / Device Role / Timing Role: Primary voltage reference source in buffered reference chain feeding ADC reference input. Use Value: 400 mW Pd rating allows direct connection to unregulated 5 V rail with series resistor, eliminating LDO dependency. |
Use Scenario: Setting feedback threshold in isolated flyback converter using TL431-based optocoupler loop. IC Role / Device Role / Timing Role: Secondary-side zener clamp protecting optocoupler LED from overvoltage during transient events. Use Value: 200°C Tj rating ensures reliability under sustained overload conditions common in industrial SMPS designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4732A (ON Semiconductor) | VZ = 4.7 V, Pd = 1 W, DO-41 package - higher voltage, higher power, larger footprint | Not suitable for 2 V reference use; requires redesign of bias network and series resistor | Select only if 4.7 V regulation and higher surge capability are required; not drop-in for HZS2B1TD-E |
| BZX55C2V0 (Vishay) | VZ = 2.0 V ±5%, Pd = 500 mW, DO-35 - wider VZ tolerance, higher power, same voltage grade | Acceptable for non-critical 2 V references but introduces ±0.1 V additional error vs. HZS2B1TD-E's ±0.1 V absolute spec | Use where cost sensitivity outweighs tight VZ matching; verify thermal derating at 500 mW in target layout |
Compared with 1N4732A and BZX55C2V0, the HZS2B1TD-E offers tighter absolute VZ tolerance (±0.1 V), lower leakage, and MHD package compatibility with high-speed insertion - making it preferable for space-constrained, precision 2 V reference designs in industrial automation hardware.
Availability
HZS2B1TD-E is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller reset clamping, and portable instrument reference applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for HZS2B1TD-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 SoC solutions for industrial, automotive, and infrastructure markets.
The HZS Series belongs to Renesas' discrete Zener diode product line, engineered for high-stability voltage reference and clamping in cost-sensitive, high-volume industrial power management applications.
FAQ
What is the exact zener voltage range for HZS2B1TD-E?
The HZS2B1TD-E has a guaranteed zener voltage range of 1.9 V to 2.1 V when tested at IZ = 5 mA and Ta = 25°C. This Grade B1 specification reflects a ±0.1 V absolute tolerance, tighter than standard commercial Zeners, and is confirmed in Renesas document REJ03G0184-0500 Rev.5.00. The HZS2B1TD-E achieves this stability via planar junction optimization near the zero-temperature-coefficient point.
Is HZS2B1TD-E RoHS compliant?
Yes, HZS2B1TD-E complies with the EU RoHS Directive as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits. Renesas recommends verifying latest status via their official website or sales office before final design-in, as material declarations may be updated.
What is the package type and dimensions of HZS2B1TD-E?
HZS2B1TD-E uses the MHD package (JEITA code GRZZ0002ZC-A): an axial-leaded, silicon planar Zener diode with 2.0 mm diameter, 26.0 mm body length, and lake-blue cathode band marking. Its paper phenol body supports 5 mm-pitch automatic insertion. Dimensions and mass (0.084 g typ.) are specified on page 6 of Renesas datasheet REJ03G0184-0500.
Can HZS2B1TD-E replace a 2.0 V Zener in a high-temperature environment?
Yes - the HZS2B1TD-E is rated for junction temperatures up to 200°C and storage from −55°C to +175°C, making it suitable for high-ambient applications such as motor drive control boards or outdoor industrial enclosures. Its low dynamic resistance (≤100 Ω) and stable VZ near 2 V minimize thermal drift. Always verify PCB copper area and series resistor values to maintain Tj within limit under worst-case power dissipation.
Does HZS2B1TD-E have a specified temperature coefficient?
Yes - Renesas specifies the zener voltage temperature coefficient (γZ) versus VZ in Figure 2 of REJ03G0184-0500. For the HZS2B1TD-E (VZ ≈ 2.0 V), γZ is near zero (±0.02 %/°C or ±0.4 mV/°C), confirming optimal thermal stability in the 2 V range. This behavior is intrinsic to its silicon planar junction design and does not require external compensation.
HZS2B1TD-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:
- -
HZS2B1TD-E FAQ
1.How can I place an order for HZS2B1TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS2B1TD-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 HZS2B1TD-E reliable?
The price and inventory of HZS2B1TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS2B1TD-E is usually 5 days.
3.What payment methods are accepted for HZS2B1TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS2B1TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS2B1TD-E?
HZS2B1TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS2B1TD-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 HZS2B1TD-E?
For technical support, including HZS2B1TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS2B1TD-E requirements.
6.How does Aetrix verify that HZS2B1TD-E is sourced from the original manufacturer or authorized distributors?
All HZS2B1TD-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 HZS2B1TD-E meets industry standards.
7.What is the process for return or replacement of HZS2B1TD-E?
All HZS2B1TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS2B1TD-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 HZS2B1TD-E part is unused and in its original packaging.
Return procedure for HZS2B1TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS2B1TD-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…
