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Nexperia USA Inc. BZX79-B7V5,133
- Part No.:
- BZX79-B7V5,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-B7V5,133.pdf
- Description:
- DIODE ZENER 7.5V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:9,895
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Product details
Overview
BZX79-B7V5,133 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 7.5 V nominal with 1 μA reverse leakage at 5 V, 30–80 Ω differential resistance at 5 mA, and ±200 °C junction temperature rating. It serves in precision biasing, analog sensor excitation, and overvoltage clamping circuits.
For engineers reviewing the BZX79-B7V5,133 datasheet, BZX79-B7V5,133 pinout, BZX79-B7V5,133 application, or BZX79-B7V5,133 equivalent, this page delivers verified electrical parameters, thermal limits, package geometry, real-world use cases, and validated alternative parts - all aligned to Nexperia's production-grade BZX79-B series specifications.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal regulation voltage of 7.5 V at 5 mA test current, exhibiting a positive temperature coefficient of +2.5 to +5.3 mV/K across 1–10 mA operating range. Its differential resistance remains stable below 80 Ω, enabling tight voltage control under varying load conditions.
Designed for ambient temperatures up to +50 °C on PCBs without metallization pads, it supports non-repetitive surge handling up to 40 W for 100 μs pulses and maintains storage capability from −65 °C to +200 °C. The axial-leaded SOD27 package ensures reliable thermal dissipation with Rth j-a = 380 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Nominal) | 7.5 V at IZ = 5 mA - precise DC reference point for analog circuitry |
| Tolerance | ±2% - enables high-accuracy voltage setting without trimming |
| IR @ VR = 5 V | 1 μA max - low leakage preserves battery life in standby circuits |
| rdif | 30–80 Ω - ensures minimal output voltage shift under load variation |
| Ptot | 500 mW at Tamb = 50 °C - defines continuous power envelope for thermal design |
| Tj Range | −65 °C to +200 °C - supports operation in automotive under-hood and industrial environments |
| Cd @ 1 MHz | 150 pF - impacts high-frequency noise suppression capability |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking; leads are tinned copper-clad steel, compatible with wave and reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in reverse-bias configuration | Connected to ground or lower potential node when used as shunt regulator |
| Cathode | Reverse breakdown terminal / voltage reference output | Provides stabilized 7.5 V relative to anode; marked by colored band on glass body |
Key Features
| Feature | Design Value |
|---|---|
| ±2% voltage tolerance | Reduces need for post-assembly calibration in precision analog signal chains |
| Non-repetitive peak power: 40 W | Withstands transient surges such as ESD or inductive kickback without degradation |
| Low differential resistance (≤80 Ω) | Maintains regulation accuracy better than ±0.1 V across 1–10 mA load current changes |
| Hermetic glass SOD27 package | Ensures long-term parameter stability in humid or corrosive environments |
| Wide junction temperature range | Supports deployment in unheated outdoor enclosures and engine-control modules |
Applications
| Industrial Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode acts as two-terminal shunt voltage reference, sinking excess current to maintain fixed 7.5 V across RTD bridge. Use Value: Enables <±0.5% measurement linearity over −25 °C to +70 °C ambient due to low tempco and stable rdif. | Use Scenario: Generating a clean reset threshold for 3.3 V microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Paired with RC network to delay reset assertion until supply stabilizes above 7.5 V × voltage divider ratio. Use Value: Eliminates external voltage supervisor IC, reducing BOM count while meeting JEDEC JESD8-12A reset timing requirements. |
| LED Current Regulation | Overvoltage Clamp for RS-485 Transceivers |
Use Scenario: Setting reference voltage for constant-current LED driver IC feedback loop in signage applications. IC Role / Device Role / Timing Role: Supplies regulated 7.5 V to op-amp reference input, defining LED current via sense resistor voltage drop. Use Value: Achieves <±3% current consistency across 100–240 VAC input range and 0–60 °C ambient. | Use Scenario: Protecting RS-485 transceiver inputs against induced surges on long industrial bus lines. IC Role / Device Role / Timing Role: Placed between data line and ground to clamp transients exceeding 7.5 V, diverting energy before IC damage occurs. Use Value: Withstands 40 W/100 μs surges per IEC 61000-4-5 Level 3, extending transceiver lifetime in factory automation systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5233BS-7-F | Surface-mount SOT-323 package; 7.5 V ±5%; 100 mW Ptot; rdif = 30 Ω typical | Lower power rating and smaller footprint limit use to portable electronics, not industrial mains-connected designs | Select when board space is constrained and surge immunity requirements are ≤10 W |
| 1N4733A | Through-hole DO-41 package; 7.5 V ±5%; 1 W Ptot; rdif = 13 Ω typical | Higher power handling but looser tolerance increases calibration burden in precision references | Select when higher surge robustness is required and ±5% regulation error is acceptable |
Compared with MMBZ5233BS-7-F and 1N4733A, BZX79-B7V5,133 uniquely balances ±2% tolerance, 500 mW power, hermetic reliability, and DO-35 mechanical compatibility - making it optimal for cost-sensitive industrial instrumentation where long-term drift and environmental resilience matter.
Availability
BZX79-B7V5,133 is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller reset generation, and overvoltage protection requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for BZX79-B7V5,133 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, with core expertise in high-volume, high-reliability components for automotive and industrial markets.
The BZX79 series belongs to Nexperia's legacy Zener diode portfolio, engineered specifically for cost-effective, stable voltage referencing in resource-constrained analog subsystems across computing, consumer, and industrial equipment.
FAQ
What is the maximum continuous power dissipation for BZX79-B7V5,133?
The device dissipates up to 500 mW at ambient temperature ≤50 °C with standard PCB mounting (no metallization pad, lead length ≤8 mm). At higher ambient temperatures, derating applies per the thermal resistance Rth j-a = 380 K/W, limiting usable power to ~400 mW at 70 °C ambient.
Does BZX79-B7V5,133 have a specified forward voltage?
Yes - forward voltage is 0.9 V maximum at 10 mA forward current and 25 °C junction temperature. This value is relevant for polarity-check circuits or dual-use configurations where the diode may conduct forward during power-up sequencing or fault conditions.
Can BZX79-B7V5,133 be used in surface-mount designs?
No - it uses an axial-leaded SOD27 (DO-35) glass package intended for through-hole mounting. For SMT equivalents, consider Nexperia's MMBZ52xx series in SOT-23 or SOT-323 packages, though tolerance and power ratings differ.
What is the temperature coefficient behavior of BZX79-B7V5,133?
Its temperature coefficient ranges from +2.5 to +5.3 mV/K depending on test current (1–10 mA), reflecting a positive drift in Zener voltage with rising temperature - a characteristic confirmed in Figures 5 and 6 of the official Nexperia datasheet for the BZX79-B/C7V5 variant.
BZX79-B7V5,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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-B7V5,133 FAQ
1.How can I place an order for BZX79-B7V5,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-B7V5,133 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-B7V5,133 reliable?
The price and inventory of BZX79-B7V5,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-B7V5,133 is usually 5 days.
3.What payment methods are accepted for BZX79-B7V5,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-B7V5,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-B7V5,133?
BZX79-B7V5,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-B7V5,133 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-B7V5,133?
For technical support, including BZX79-B7V5,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-B7V5,133 requirements.
6.How does Aetrix verify that BZX79-B7V5,133 is sourced from the original manufacturer or authorized distributors?
All BZX79-B7V5,133 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-B7V5,133 meets industry standards.
7.What is the process for return or replacement of BZX79-B7V5,133?
All BZX79-B7V5,133 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-B7V5,133, 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-B7V5,133 part is unused and in its original packaging.
Return procedure for BZX79-B7V5,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX79-B7V5,133 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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