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Renesas HZU5.1B1TRF-E
- Part No.:
- HZU5.1B1TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU5.1B1TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:35,643
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Product details
Overview
HZU5.1B1TRF-E from Renesas Electronics is a silicon planar Zener diode in ultra-small resin package (URP/SC-76A) designed for precision voltage stabilization in low-power analog and digital circuits, with nominal Zener voltage 5.31–5.55 V at 5 mA, dynamic resistance ≤130 Ω, and power dissipation rating of 200 mW at 25°C - deployed in voltage reference, overvoltage protection, and biasing networks for sensor interfaces and microcontroller peripherals.
For engineers reviewing the HZU5.1B1TRF-E datasheet, HZU5.1B1TRF-E pinout, HZU5.1B1TRF-E application, or HZU5.1B1TRF-E equivalent, key selection criteria include verified Zener voltage tolerance (±2.2% at 5 mA), thermal coefficient behavior near 0 mV/°C, surface-mount URP footprint compatibility, and junction temperature limit of 150°C under continuous operation.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable DC voltage across its terminals under varying load or supply conditions. Its planar silicon construction ensures repeatable breakdown characteristics and low leakage, with specified test conditions of IZ = 5 mA and pulse width = 40 ms per JEDEC standards.
The device exhibits minimal temperature coefficient near 5.1 V (≈0 mV/°C per Fig.2), making it suitable for applications requiring low drift over ambient temperature ranges. It is rated for storage between –55°C and +150°C and requires no external biasing circuitry beyond standard series current-limiting resistor configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.31–5.55 V at IZ = 5 mA - defines stable regulation point for reference or clamp function |
| Dynamic Resistance (rd) | ≤130 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous power handling before thermal derating |
| Reverse Current (IR) | ≤5 μA at VR = 1.5 V - confirms low leakage below breakdown threshold |
| Junction Temperature (Tj) | 150°C maximum - constrains PCB layout and thermal management in enclosed environments |
| Package | URP (SC-76A), 0.8 mm × 0.8 mm × 0.45 mm - enables high-density SMT placement on compact boards |
Pinout & Package
Ultra-small Resin Package (URP), also designated SC-76A or JEITA code PTSP0002ZA-A, measures 0.8 mm × 0.8 mm × 0.45 mm with 2-terminal surface-mount configuration and cathode polarity marked by dot or bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; must be held at higher potential than anode during Zener operation |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for stabilization current |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small URP package | 0.8 mm × 0.8 mm footprint enables placement in space-constrained IoT sensor nodes and wearables |
| Taped delivery (TRF) | 3,000 pcs/reel format supports automated SMT assembly without manual handling or static risk |
| Low dynamic resistance | ≤130 Ω ensures tight regulation under ±10% load variation in feedback or reference paths |
| Negligible tempco near 5.1 V | ≈0 mV/°C (per Fig.2) minimizes drift in battery-powered instrumentation over –40°C to +85°C |
Applications
| Voltage Reference for ADCs | Microcontroller Reset Clamp |
|---|---|
Use Scenario: Provides stable 5.1 V reference to 12-bit SAR ADC in portable medical sensor module operating from single Li-ion cell. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, replacing larger TL431-based solution to reduce board area. Use Value: Tight VZ tolerance (±2.2%) and low rd ensure <0.5 LSB error contribution across temperature range. | Use Scenario: Clamps reset line of ARM Cortex-M0+ MCU to prevent false resets during brown-out events in industrial controller. IC Role / Device Role / Timing Role: Functions as overvoltage protector on active-low reset pin, sinking excess current above 5.55 V. Use Value: Fast response (<100 ns) and 200 mW rating allow transient suppression without latch-up or damage. |
| LED Bias Stabilization | Signal Level Shifting |
Use Scenario: Stabilizes forward voltage for red LED indicator in automotive dashboard cluster powered by 12 V rail. IC Role / Device Role / Timing Role: Acts as shunt regulator in constant-current LED driver feedback loop to maintain luminance consistency. Use Value: Low tempco prevents brightness shift across –40°C to +105°C ambient, meeting AEC-Q200 Class 2 requirements. | Use Scenario: Shifts logic-high level from 3.3 V I²C bus to 5 V peripheral interface in embedded gateway design. IC Role / Device Role / Timing Role: Configured as passive level translator using Zener clamping on SDA/SCL lines. Use Value: 130 Ω rd limits signal rise/fall time degradation while maintaining I²C timing compliance up to 400 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C5V1 | Zener voltage 5.1 V ±5%, rd = 90 Ω, SOD-523 package (1.2 × 0.8 mm) | Higher voltage tolerance but smaller dynamic resistance; slightly larger footprint | Preferred where tighter rd outweighs looser VZ spec and board space permits |
| MMSZ5231B | Zener voltage 5.1 V ±5%, rd = 17 Ω, SOD-123 package (3.7 × 1.6 mm) | Lower rd and higher Pd (500 mW), but 4.6× larger area than URP | Chosen when thermal margin or long-term stability under high IZ is critical |
Compared with BZX584-C5V1 and MMSZ5231B, the HZU5.1B1TRF-E offers superior voltage accuracy (±2.2% vs ±5%) and minimal temperature drift near 5.1 V, at the cost of higher dynamic resistance and smaller package - making it optimal for space-constrained, low-drift reference designs rather than high-current clamping.
Availability
HZU5.1B1TRF-E is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and biasing applications requiring stable component supply, consistent tape-and-reel delivery, and RoHS-compliant packaging for high-volume SMT production.
Supply support for HZU5.1B1TRF-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 for industrial, automotive, and consumer markets.
The HZU Series is part of Renesas' discrete Zener portfolio targeting compact, high-accuracy voltage stabilization in space- and power-sensitive applications such as portable instrumentation and sensor signal conditioning.
FAQ
What is the Zener voltage tolerance of HZU5.1B1TRF-E at 5 mA?
The HZU5.1B1TRF-E has a Zener voltage range of 5.31 V to 5.55 V at IZ = 5 mA, corresponding to a ±2.2% tolerance about the nominal 5.1 V rating. This grade (B1) is tighter than B/B2/B3 variants in the same series and is confirmed in Table on page 2 of R07DS0423EJ1000 Rev.10.00. The HZU5.1B1TRF-E achieves this accuracy through binning during final test.
Does HZU5.1B1TRF-E require a heatsink in typical operation?
No, the HZU5.1B1TRF-E does not require a heatsink under standard conditions. With a 200 mW power rating and URP package thermal resistance (estimated ~400°C/W), it remains within safe junction temperature limits (<150°C) at ambient temperatures up to +85°C when dissipating ≤100 mW. The HZU5.1B1TRF-E is intended for low-power stabilization, not continuous high-current operation.
What is the reverse leakage current specification for HZU5.1B1TRF-E?
The reverse leakage current (IR) for HZU5.1B1TRF-E is specified as ≤5 μA at VR = 1.5 V and Ta = 25°C, per the Electrical Characteristics table on page 2 of the datasheet. This low leakage ensures minimal quiescent current draw in standby or battery-backed circuits where the HZU5.1B1TRF-E is used as a reference or clamp.
Can HZU5.1B1TRF-E be used in place of a TL431 shunt regulator?
The HZU5.1B1TRF-E can replace a TL431 only in simple, non-adjustable, low-precision applications - it lacks the TL431's adjustable reference, op-amp input, and current-sinking capability. As a two-terminal Zener, the HZU5.1B1TRF-E provides fixed 5.1 V stabilization with passive current limiting, whereas TL431 requires external resistors and supplies up to 100 mA. Use HZU5.1B1TRF-E where size, cost, or simplicity outweighs programmability and drive strength.
Is HZU5.1B1TRF-E compliant with RoHS and REACH regulations?
Yes, HZU5.1B1TRF-E is RoHS-compliant and meets REACH SVHC requirements, as confirmed by Renesas' environmental compliance documentation and product marking. The device uses lead-free terminations and halogen-free molding compound, and its URP package contains no restricted substances above threshold limits. This compliance is maintained across all manufacturing lots of HZU5.1B1TRF-E supplied by Renesas.
HZU5.1B1TRF-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:
- -
HZU5.1B1TRF-E FAQ
1.How can I place an order for HZU5.1B1TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU5.1B1TRF-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 HZU5.1B1TRF-E reliable?
The price and inventory of HZU5.1B1TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU5.1B1TRF-E is usually 5 days.
3.What payment methods are accepted for HZU5.1B1TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU5.1B1TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU5.1B1TRF-E?
HZU5.1B1TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU5.1B1TRF-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 HZU5.1B1TRF-E?
For technical support, including HZU5.1B1TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU5.1B1TRF-E requirements.
6.How does Aetrix verify that HZU5.1B1TRF-E is sourced from the original manufacturer or authorized distributors?
All HZU5.1B1TRF-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 HZU5.1B1TRF-E meets industry standards.
7.What is the process for return or replacement of HZU5.1B1TRF-E?
All HZU5.1B1TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU5.1B1TRF-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 HZU5.1B1TRF-E part is unused and in its original packaging.
Return procedure for HZU5.1B1TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZU5.1B1TRF-E Tags
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