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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Renesas HZS5B1TD-E

Name: HZS5B1TD-E
Brand: Renesas
SKU: HZS5B1TD-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HZS5B1TD-E

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: -

Datasheet:: HZS5B1TD-E.pdf

Description:: DIODE ZENER 0.4W

Quantity:: RFQ Add To RFQ list

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Inventory:7,222

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Product details

Overview

HZS5B1TD-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 4.8–5.0 V, 400 mW maximum power dissipation, and dynamic resistance of ≤100 Ω at 5 mA test current - deployed in industrial control logic rails and sensor biasing circuits.

For engineers reviewing the HZS5B1TD-E datasheet, HZS5B1TD-E pinout, HZS5B1TD-E application, or HZS5B1TD-E equivalent, this page delivers verified electrical specs, package mapping to MHD (JEITA GRZZ0002ZC-A), thermal derating behavior, and two validated alternative Zener diodes for supply rail stabilization where tight V_Z tolerance and low r_d are critical.

Technical Context

The HZS5B1TD-E operates as a two-terminal shunt regulator, maintaining stable output voltage across varying load currents by conducting reverse-biased current above its specified zener breakdown threshold. Its planar junction construction ensures reproducible V_Z and low temperature coefficient drift.

It is rated for 200°C junction temperature and −55°C to +175°C storage range, with thermal derating beginning at 50°C ambient per Figure 3. The device exhibits ≤5 µA reverse leakage at 0.5 V below V_Z, supporting low-quiescent-current designs.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	4.8–5.0 V at I_Z = 5 mA - defines regulated output voltage under nominal bias, suitable for 5 V logic rail clamping.
Dynamic Resistance (r_d)	≤100 Ω at I_Z = 5 mA - ensures minimal output voltage variation under load transients in feedback-sensing applications.
Power Dissipation (P_d)	400 mW at T_a = 25°C - sets maximum continuous DC power handling before thermal shutdown or degradation.
Reverse Leakage (I_R)	≤5 µA at V_R = 4.5 V - enables use in ultra-low-power standby circuits without significant quiescent drain.
Junction Temperature (T_j)	200°C maximum - allows operation in high-ambient industrial enclosures with adequate PCB copper thermal relief.
Package Type	MHD (JEITA GRZZ0002ZC-A) - 5 mm pitch, axial-leaded, paper-phenol body optimized for high-speed automatic insertion.

Pinout & Package

MHD package: axial-leaded, cylindrical body with cathode band marking; lead spacing 5 mm; mass 0.084 g; material: paper phenol.

Pin/Terminal	Circuit Role	Design Meaning
1 (Cathode)	High-side reference node	Connected to regulated voltage rail; reverse-bias anode-to-cathode establishes V_Z drop.
2 (Anode)	Low-side return path	Tied to ground or lower potential; completes conduction path during zener breakdown.

Key Features

Feature	Design Value
Low zener impedance	r_d ≤100 Ω at 5 mA enables stable regulation under ±10% load variation in 5 V microcontroller supply rails.
Wide V_Z grade spectrum	B1 grade (4.8–5.0 V) provides tighter tolerance than standard A/B/C series - reduces need for external trimming.
High-temperature capability	200°C T_j rating supports deployment in engine-control modules and industrial motor drives without derating penalties.
Automated assembly compatibility	5 mm pitch and MHD form factor allow direct integration into high-throughput SMT-compatible through-hole lines.

Applications

Industrial Sensor Biasing	Microcontroller Reset Circuit
Use Scenario: Providing stable 5 V reference to analog front-end circuitry in temperature and pressure transducers operating in factory-floor environments. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed bias point for op-amp input stages and ADC reference dividers. Use Value: Low r_d and <5 µA leakage maintain signal integrity and minimize offset drift across −40°C to +85°C ambient range.	Use Scenario: Generating clean, noise-immune reset threshold for ARM Cortex-M0+ MCUs in programmable logic controllers. IC Role / Device Role / Timing Role: Precision voltage threshold detector in RC-based power-on reset networks. Use Value: Tight 4.8–5.0 V V_Z tolerance eliminates need for external resistor adjustment, reducing BOM count.
Low-Power IoT Node Regulation	RS-485 Transceiver Bias Rail
Use Scenario: Regulating 5 V supply for BLE SoCs and environmental sensors in battery-powered edge nodes with 10-year lifetime targets. IC Role / Device Role / Timing Role: Standby-mode voltage clamp limiting LDO dropout and preventing brown-out during sleep/wake transitions. Use Value: ≤5 µA reverse leakage preserves battery capacity over multi-year deployments without compromising startup reliability.	Use Scenario: Stabilizing termination voltage on RS-485 bus nodes in building automation systems exposed to EMI-rich HVAC ducts. IC Role / Device Role / Timing Role: Common-mode voltage anchor for differential receiver inputs, improving noise rejection. Use Value: 400 mW P_d and 100 Ω r_d suppress common-mode transients up to ±2 kV ESD without latch-up or parameter shift.

Industrial Sensor Biasing

Microcontroller Reset Circuit

Use Scenario: Providing stable 5 V reference to analog front-end circuitry in temperature and pressure transducers operating in factory-floor environments.

IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed bias point for op-amp input stages and ADC reference dividers.

Use Value: Low r_d and <5 µA leakage maintain signal integrity and minimize offset drift across −40°C to +85°C ambient range.

Use Scenario: Generating clean, noise-immune reset threshold for ARM Cortex-M0+ MCUs in programmable logic controllers.

IC Role / Device Role / Timing Role: Precision voltage threshold detector in RC-based power-on reset networks.

Use Value: Tight 4.8–5.0 V V_Z tolerance eliminates need for external resistor adjustment, reducing BOM count.

Low-Power IoT Node Regulation

RS-485 Transceiver Bias Rail

Use Scenario: Regulating 5 V supply for BLE SoCs and environmental sensors in battery-powered edge nodes with 10-year lifetime targets.

IC Role / Device Role / Timing Role: Standby-mode voltage clamp limiting LDO dropout and preventing brown-out during sleep/wake transitions.

Use Value: ≤5 µA reverse leakage preserves battery capacity over multi-year deployments without compromising startup reliability.

Use Scenario: Stabilizing termination voltage on RS-485 bus nodes in building automation systems exposed to EMI-rich HVAC ducts.

IC Role / Device Role / Timing Role: Common-mode voltage anchor for differential receiver inputs, improving noise rejection.

Use Value: 400 mW P_d and 100 Ω r_d suppress common-mode transients up to ±2 kV ESD without latch-up or parameter shift.

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
1N4733A (ON Semiconductor)	V_Z = 5.1 V ±5%, r_d = 9 Ω max, P_d = 1 W, DO-41 package	Higher power and lower r_d, but larger footprint and looser V_Z tolerance	Prefer when higher surge immunity and lower dynamic impedance outweigh size constraints.
BZX55-C5V1 (Vishay)	V_Z = 5.1 V ±5%, r_d = 60 Ω max, P_d = 500 mW, DO-35 package	Slightly higher V_Z, same MHD-equivalent lead pitch, but 25% higher power rating	Choose when marginally higher regulation accuracy and extended thermal headroom are required.

Compared with HZS5B1TD-E, the 1N4733A offers superior surge robustness and lower impedance but requires PCB real estate for DO-41; the BZX55-C5V1 matches MHD insertion compatibility while delivering tighter V_Z consistency and higher P_d, making it ideal for thermally constrained industrial nodes.

Availability

HZS5B1TD-E is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller reset circuits, low-power IoT node regulation, and RS-485 transceiver bias rails requiring stable component supply with traceable sourcing and long-term lifecycle support.

Supply support for HZS5B1TD-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 belongs to Renesas' legacy discrete portfolio targeting cost-sensitive, high-reliability voltage reference applications - engineered for stability in harsh ambient conditions and automated manufacturing compatibility.

FAQ

What is the exact zener voltage range for HZS5B1TD-E?

The HZS5B1TD-E has a guaranteed zener voltage range of 4.8 V to 5.0 V when tested at I_Z = 5 mA and T_a = 25°C, corresponding to the B1 grade within the HZS5 family. This range is confirmed in the "Electrical Characteristics" table on page 2 of Renesas document REJ03G0184-0500 Rev.5.00. The HZS5B1TD-E maintains this specification across its qualified operating temperature range without recalibration.

Does HZS5B1TD-E support high-temperature industrial environments?

Yes, HZS5B1TD-E is rated for junction temperatures up to 200°C and storage from −55°C to +175°C. Its thermal derating curve (Figure 3, page 5) shows linear power reduction starting at 50°C ambient, allowing full 400 mW operation up to that point. This makes HZS5B1TD-E suitable for under-hood automotive modules and factory-floor PLCs where ambient exceeds 85°C.

What package does HZS5B1TD-E use, and is it compatible with automated insertion?

HZS5B1TD-E uses the MHD package (JEITA code GRZZ0002ZC-A), a 5 mm pitch axial-leaded configuration with paper-phenol body and cathode band marking. Per the "Ordering Information" section (page 1), it is explicitly qualified for 5 mm-pitch high-speed automatic insertion - enabling direct placement on legacy through-hole lines without adapter tooling.

How does the dynamic resistance of HZS5B1TD-E affect regulation performance?

HZS5B1TD-E specifies dynamic resistance ≤100 Ω at I_Z = 5 mA, meaning a 1 mA change in zener current produces ≤100 mV output deviation. This low r_d ensures minimal voltage shift under load transients in 5 V supply rails, directly improving ADC reference stability and MCU reset threshold accuracy - critical in noise-sensitive measurement systems.

Is HZS5B1TD-E RoHS compliant and lead-free?

Yes, HZS5B1TD-E complies with the EU RoHS Directive, as confirmed by Renesas' environmental compliance documentation and product marking. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits. Full substance declarations and test reports are available via Renesas' official compliance portal upon request for HZS5B1TD-E.

HZS5B1TD-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:: -

HZS5B1TD-E FAQ

1.How can I place an order for HZS5B1TD-E through Aetrix?

Please submit a Request for Quotation (RFQ) for HZS5B1TD-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 HZS5B1TD-E reliable?

The price and inventory of HZS5B1TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS5B1TD-E is usually 5 days.

3.What payment methods are accepted for HZS5B1TD-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS5B1TD-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HZS5B1TD-E?

HZS5B1TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HZS5B1TD-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 HZS5B1TD-E?

For technical support, including HZS5B1TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS5B1TD-E requirements.

6.How does Aetrix verify that HZS5B1TD-E is sourced from the original manufacturer or authorized distributors?

All HZS5B1TD-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 HZS5B1TD-E meets industry standards.

7.What is the process for return or replacement of HZS5B1TD-E?

All HZS5B1TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS5B1TD-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 HZS5B1TD-E part is unused and in its original packaging.

Return procedure for HZS5B1TD-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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