My Inquiry
My Account
Renesas HZU9.1B2TRF-E
- Part No.:
- HZU9.1B2TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU9.1B2TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:36,263
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZU9.1B2TRF-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage stabilization in low-power analog and power-supply reference circuits, featuring a nominal Zener voltage of 9.1 V (±3.3% tolerance), 200 mW power dissipation, and ultra-small URP (SC-76A) surface-mount package. It operates with 6.0 Ω dynamic resistance at 5 mA test current and supports stable regulation across –55°C to +150°C storage temperature range.
For engineers reviewing the HZU9.1B2TRF-E datasheet, HZU9.1B2TRF-E pinout, HZU9.1B2TRF-E application, or HZU9.1B2TRF-E equivalent, key selection considerations include its B2-grade voltage tolerance (9.15–9.55 V), pulse-tested Zener characteristics, taping format (3,000 pcs/reel), and suitability for space-constrained voltage reference and overvoltage protection in portable instrumentation and industrial sensor interfaces.
Technical Context
This Zener diode employs a silicon planar junction structure optimized for stable reverse-breakdown behavior under DC and pulsed conditions (40 ms pulse width). Its electrical performance is characterized at 25°C ambient with defined test currents and voltage limits, ensuring predictable regulation in feedback loops and reference dividers.
The device exhibits a negative Zener voltage temperature coefficient near 0 mV/°C at ~9.1 V (per Fig.2), minimizing thermal drift in precision references. Its URP package enables high-density PCB layout while maintaining thermal derating per Fig.3 - power dissipation drops linearly above 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.15–9.55 V at IZ = 5 mA - defines tight regulation window for reference accuracy |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous power handling before thermal derating |
| Dynamic Resistance (rd) | 6.0 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤2 μA at VR = 7.0 V - ensures low leakage in high-impedance bias networks |
| Junction Temperature (Tj) | 150°C maximum - defines upper thermal limit for reliable long-term operation |
| Package | URP (SC-76A), 0.8 mm × 0.8 mm footprint - enables miniaturized SMT designs with standard reflow compatibility |
Pinout & Package
Ultra-small Resin Package (URP, JEITA code SC-76A) with 2-terminal surface-mount configuration. Cathode marked by dot on top surface; anode unmarked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity must be observed for correct breakdown conduction |
| 2 | Anode | Connected to circuit ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B2 Zener tolerance | ±2.2% (9.15–9.55 V) - tighter than standard B-grade, improving reference accuracy without trimming |
| Pulse-tested Zener parameters | Tested with 40 ms pulses - ensures stable VZ and rd under transient load conditions |
| Low-profile URP package | 0.8 mm × 0.8 mm × 0.45 mm max height - reduces board area and improves thermal coupling to PCB copper |
| Taped and reel packaging | TRF format, 3,000 pcs/reel - compatible with high-speed pick-and-place assembly for volume production |
Applications
| Portable Sensor Signal Conditioning | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Stabilizing bias voltage for op-amp-based bridge sensor amplifiers in battery-powered gas detectors. IC Role / Device Role / Timing Role: Zener diode provides fixed 9.1 V reference for excitation and ADC reference scaling. Use Value: B2-grade tolerance ensures <±0.2 V reference error across temperature, directly improving ppm-level gas concentration measurement fidelity. |
Use Scenario: Clamping input transients on 24 V DC digital input modules exposed to inductive switching noise. IC Role / Device Role / Timing Role: Acts as shunt overvoltage protector, diverting surge energy before it reaches downstream logic ICs. Use Value: 200 mW rating and 6.0 Ω rd enable fast clamping response with minimal voltage overshoot during 1 kV EFT events. |
| Medical Wearable Power Management | Automotive Body Control Module Reference |
|
Use Scenario: Generating stable 9.1 V rail for low-noise LDO pre-regulation in ECG front-end analog signal chains. IC Role / Device Role / Timing Role: Provides clean, low-drift voltage reference for precision bandgap circuits and ADC references. Use Value: Near-zero temperature coefficient at 9.1 V minimizes reference drift over body-temperature operating range (15–40°C). |
Use Scenario: Supplying regulated voltage to microcontroller reset supervisor ICs in 12 V automotive subsystems. IC Role / Device Role / Timing Role: Functions as primary voltage reference for reset threshold detection and brown-out monitoring. Use Value: Robust 150°C junction rating and AEC-Q200-compatible URP package support under-hood reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage stabilization applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C9V1,115 | Same 9.1 V nominal, SOT-23 package (larger footprint), ±5% tolerance (B-grade), 300 mW Pd | Higher power handling but looser tolerance; less suitable for precision references | Select when higher surge capability is needed and board space allows SOT-23 |
| MMSZ5240B-TP | 9.1 V nominal, SOD-123 package, ±5% tolerance, 500 mW Pd, 10 Ω rd | Higher power and larger size; higher dynamic resistance degrades regulation under load variation | Prefer for cost-sensitive, non-precision applications where thermal margin is critical |
Compared with BZX84-C9V1,115 and MMSZ5240B-TP, the HZU9.1B2TRF-E delivers tighter voltage tolerance and smaller footprint at the expense of lower power rating - making it optimal for space-constrained, accuracy-critical reference designs rather than general-purpose clamping.
Availability
HZU9.1B2TRF-E is available at Aetrix Electronics and suitable for portable sensor signal conditioning, industrial PLC input protection, medical wearable power management, and automotive body control module reference requiring stable component supply, consistent tape-and-reel delivery, and RoHS-compliant sourcing.
Supply support for HZU9.1B2TRF-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 is a global semiconductor manufacturer headquartered in Japan, specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and consumer markets.
The HZU Series belongs to Renesas' silicon planar Zener diode product line, engineered specifically for compact, high-stability voltage reference and overvoltage protection in surface-mount applications demanding tight tolerance and thermal robustness.
FAQ
What is the Zener voltage tolerance for HZU9.1B2TRF-E?
The HZU9.1B2TRF-E has a B2-grade Zener voltage specification of 9.15 V minimum to 9.55 V maximum at 5 mA test current, corresponding to ±2.2% tolerance around the nominal 9.1 V rating. This tighter tolerance than standard B-grade devices makes HZU9.1B2TRF-E suitable for applications requiring improved reference accuracy without external trimming.
Does HZU9.1B2TRF-E support high-temperature operation?
Yes, HZU9.1B2TRF-E is rated for junction temperatures up to 150°C and storage temperatures from –55°C to +150°C. Its URP package and silicon planar construction ensure stable Zener characteristics across this full industrial temperature range, with derated power dissipation above 25°C ambient per Figure 3 in the datasheet.
What is the dynamic resistance of HZU9.1B2TRF-E and why does it matter?
The dynamic resistance (rd) of HZU9.1B2TRF-E is 6.0 Ω measured at 5 mA Zener current. This low value indicates minimal change in Zener voltage under varying load current, directly improving regulation accuracy in voltage reference and feedback applications where load stability is critical.
Is HZU9.1B2TRF-E compatible with standard SMT reflow processes?
Yes, HZU9.1B2TRF-E uses the URP (SC-76A) package, which is qualified for standard lead-free reflow soldering profiles. Its dimensions (0.8 mm × 0.8 mm) and thermal mass align with IPC-J-STD-020 guidelines, and the device is supplied in TRF taping format compatible with automated placement equipment.
How does the temperature coefficient of HZU9.1B2TRF-E affect reference stability?
Per Figure 2 in the datasheet, the Zener voltage temperature coefficient (γZ) of HZU9.1B2TRF-E is near 0 mV/°C at 9.1 V - meaning its regulation voltage exhibits minimal drift over temperature. This characteristic is essential for precision references in environments with wide ambient fluctuations, such as medical wearables or outdoor industrial sensors.
HZU9.1B2TRF-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:
- -
HZU9.1B2TRF-E FAQ
1.How can I place an order for HZU9.1B2TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU9.1B2TRF-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 HZU9.1B2TRF-E reliable?
The price and inventory of HZU9.1B2TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU9.1B2TRF-E is usually 5 days.
3.What payment methods are accepted for HZU9.1B2TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU9.1B2TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU9.1B2TRF-E?
HZU9.1B2TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU9.1B2TRF-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 HZU9.1B2TRF-E?
For technical support, including HZU9.1B2TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU9.1B2TRF-E requirements.
6.How does Aetrix verify that HZU9.1B2TRF-E is sourced from the original manufacturer or authorized distributors?
All HZU9.1B2TRF-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 HZU9.1B2TRF-E meets industry standards.
7.What is the process for return or replacement of HZU9.1B2TRF-E?
All HZU9.1B2TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU9.1B2TRF-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 HZU9.1B2TRF-E part is unused and in its original packaging.
Return procedure for HZU9.1B2TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZU9.1B2TRF-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
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
