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Nexperia USA Inc. BZX79-B9V1,113
- Part No.:
- BZX79-B9V1,113
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-B9V1,113.pdf
- Description:
- DIODE ZENER 9.1V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:7,999
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Product details
Overview
BZX79-B9V1,113 from Nexperia is a ±2% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, designed for low-power voltage reference and stabilization at 9.1 V nominal Zener voltage with 5 mA test current, 70 nA max reverse leakage at 6 V, and 40 Ω typical differential resistance - used in precision analog power supply feedback paths and sensor biasing circuits.
For engineers reviewing the BZX79-B9V1,113 datasheet, BZX79-B9V1,113 pinout, BZX79-B9V1,113 application, or BZX79-B9V1,113 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal coefficient (+3.8 to +7.0 mV/K), junction-to-ambient thermal resistance (380 K/W), and non-repetitive surge capability (3.0 A peak reverse current).
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified current range (1–10 mA). Its temperature coefficient is positive and rises with nominal Zener voltage, reaching +5.5 mV/K typical at 9.1 V, enabling predictable drift compensation in temperature-sensitive references.
The device uses axial-leaded glass encapsulation with cathode band marking, optimized for through-hole mounting on standard PCBs without thermal pads. Its 500 mW total power dissipation at Tamb = 50 °C and 40 W non-repetitive peak reverse power handling support transient-suppressed voltage clamping in low-energy circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.92–9.28 V at IZ = 5 mA; ensures stable 9.1 V reference under nominal bias conditions |
| Tolerance | ±2%; enables high-accuracy voltage setting without post-calibration in production |
| Differential Resistance (rdiff) | 40–100 Ω typical; determines load regulation sensitivity and output impedance in shunt regulator designs |
| Reverse Leakage (IR) | 500 nA max at VR = 6 V; minimizes quiescent current error in low-power reference nodes |
| Temperature Coefficient (SZ) | +3.8 to +7.0 mV/K typical; allows predictable thermal drift modeling for compensated references |
| Total Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C; defines maximum continuous DC power handling on standard FR-4 PCB |
| Non-repetitive Peak Reverse Current (IZSM) | 3.0 A at tp = 100 μs; supports ESD/transient suppression in signal line protection |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode indicated by a colored band; leads are tin-plated copper, suitable for wave or hand soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in shunt configuration | Connected to ground or lower potential node when used as voltage reference |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 9.1 V reference relative to anode; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct use in precision 9.1 V references without trimming or selection sorting |
| Hermetic glass SOD27 package | Ensures long-term parameter stability and moisture resistance in industrial environments |
| Low 500 nA reverse leakage at 6 V | Reduces error contribution in high-impedance bias networks and battery-powered sensors |
| 40 W non-repetitive peak power rating | Supports transient overvoltage clamping in low-energy interface protection circuits |
| Positive temperature coefficient (+5.5 mV/K typ.) | Allows predictable thermal drift compensation when paired with negative-coefficient components |
Applications
| Industrial Sensor Biasing | Low-Power Reference Supply |
|---|---|
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 voltage reference diode operating in shunt regulation mode to maintain fixed 9.1 V across RTD bridge. Use Value: ±2% tolerance and low 500 nA leakage ensure <0.1% full-scale error contribution to 16-bit ADC measurements at ambient temperatures up to 70 °C. | Use Scenario: Generating a local 9.1 V reference for op-amp comparators in battery-operated smoke detector signal conditioning. IC Role / Device Role / Timing Role: Precision shunt voltage reference supplying bias to comparator input stage and hysteresis network. Use Value: 500 mW power rating and 380 K/W thermal resistance allow continuous operation from 12 V supply with series resistor, sustaining >10-year field life in sealed enclosures. |
| Power Supply Feedback | ESD Protection Clamp |
Use Scenario: Setting output voltage of isolated flyback converter via optocoupler feedback loop in medical-grade AC/DC adapter. IC Role / Device Role / Timing Role: Zener reference connected to TL431 cathode to define secondary-side regulation threshold. Use Value: 40 Ω typical differential resistance ensures minimal load-induced voltage shift during dynamic load transients, maintaining ±1% output regulation. | Use Scenario: Clamping induced transients on RS-485 bus lines in factory automation gateways exposed to 8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-energy Zener clamp placed between data line and ground to limit voltage excursion during fast transients. Use Value: 3.0 A non-repetitive peak current rating and 40 W surge power capacity absorb 100 ns–100 μs pulses without degradation, preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240B,215 | Surface-mount SOT-23 package; 10 V nominal Zener; ±5% tolerance; 100 Ω rdiff | Requires PCB redesign for SMT placement; higher voltage and looser tolerance reduce accuracy in precision references | Select only when board space constraints prohibit through-hole components and ±5% regulation is acceptable |
| 1N4739A | DO-41 package; 9.1 V nominal; ±5% tolerance; 8 Ω rdiff; 1 W Ptot | Larger footprint and higher power rating suit higher-current shunt regulators but increase cost and thermal mass | Prefer for applications requiring >500 mW continuous dissipation or tighter rdiff, provided DO-41 mounting is feasible |
Compared with MMBZ5240B,215 and 1N4739A, BZX79-B9V1,113 offers superior voltage accuracy (±2% vs. ±5%) and hermetic reliability in legacy through-hole designs, while trading off power handling (500 mW) and package size (SOD27) for cost-sensitive, space-constrained industrial instrumentation.
Availability
BZX79-B9V1,113 is available at Aetrix Electronics and suitable for industrial sensor biasing, low-power reference supplies, power supply feedback loops, and ESD protection clamps requiring stable component supply across multi-year production cycles.
Supply support for BZX79-B9V1,113 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
Nexperia is a global leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, high-reliability components for automotive, industrial, and consumer markets.
The BZX79 series belongs to Nexperia's voltage regulator diode product line, engineered for precision low-power voltage referencing and stabilization in cost-sensitive, high-reliability applications where hermetic sealing and tight tolerance are critical.
FAQ
What is the maximum continuous power dissipation for BZX79-B9V1,113 at 70 °C ambient?
The datasheet specifies 400 mW total power dissipation at Tamb = 50 °C with no metallization pad (Note 1). At 70 °C, derating applies: using Rth j-a = 380 K/W, the allowable power drops to approximately 260 mW to maintain Tj ≤ 200 °C. This must be verified with actual PCB layout and airflow conditions.
Does BZX79-B9V1,113 have a defined forward voltage specification?
Yes - the datasheet specifies VF ≤ 0.9 V at IF = 10 mA and Tj = 25 °C. This value remains stable across the full operating junction temperature range and is relevant for forward-conduction applications such as polarity protection or LED current limiting in hybrid circuits.
Can BZX79-B9V1,113 be used in parallel for higher current handling?
No - Zener diodes exhibit manufacturing variations in VZ and rdiff, causing current imbalance. Parallel operation without individual ballast resistors risks thermal runaway. For higher current, select a single higher-power Zener (e.g., 1N4739A) or use active regulation instead.
Is the cathode band orientation standardized for SOD27 packages?
Yes - per Nexperia's package outline (SOD27, DO-35), the colored band marks the cathode terminal. This matches JEDEC DO-35 and IEC 60747-2 standards, ensuring consistent orientation during manual or automated assembly across all authorized distributors and contract manufacturers.
BZX79-B9V1,113 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ALF2
BZX79-B9V1,113 FAQ
1.How can I place an order for BZX79-B9V1,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-B9V1,113 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 BZX79-B9V1,113 reliable?
The price and inventory of BZX79-B9V1,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-B9V1,113 is usually 5 days.
3.What payment methods are accepted for BZX79-B9V1,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-B9V1,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-B9V1,113?
BZX79-B9V1,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-B9V1,113 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 BZX79-B9V1,113?
For technical support, including BZX79-B9V1,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-B9V1,113 requirements.
6.How does Aetrix verify that BZX79-B9V1,113 is sourced from the original manufacturer or authorized distributors?
All BZX79-B9V1,113 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 BZX79-B9V1,113 meets industry standards.
7.What is the process for return or replacement of BZX79-B9V1,113?
All BZX79-B9V1,113 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-B9V1,113, 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 BZX79-B9V1,113 part is unused and in its original packaging.
Return procedure for BZX79-B9V1,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX79-B9V1,113 Tags
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