My Inquiry
My Account
Nexperia USA Inc. BZX79-B16,133
- Part No.:
- BZX79-B16,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-B16,133.pdf
- Description:
- DIODE ZENER 16V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:9,315
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX79-B16,133 from Nexperia is a ±2% tolerance Zener voltage regulator diode with nominal 16 V breakdown voltage at 5 mA test current, 50 Ω typical differential resistance, and 10.4 mV/K temperature coefficient. It operates in low-power voltage reference and stabilization circuits, such as power supply feedback networks and precision biasing in analog sensor interfaces.
For engineers reviewing the BZX79-B16,133 datasheet, BZX79-B16,133 pinout, BZX79-B16,133 application, or BZX79-B16,133 equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance, temperature coefficient, reverse leakage at operating VR, and DO-35 package thermal performance under pulsed surge conditions.
Technical Context
This device functions as a two-terminal passive voltage reference, relying on controlled reverse-biased avalanche breakdown in silicon. Its operation requires stable DC biasing above knee voltage (≥16 V) with current limited to ≤250 mA continuous and ≤1.5 A non-repetitive peak (100 μs pulse).
The diode exhibits a positive temperature coefficient (+10.4 mV/K at IZ = 5 mA), indicating increasing VZ with junction temperature - critical for thermal drift compensation in multi-device references. Capacitance is 15 pF at 0 V reverse bias and 1 MHz, limiting high-frequency noise filtering capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.7–16.3 V at IZ = 5 mA; defines stable regulation point in feedback loops |
| Tolerance | ±2%; enables tighter output voltage control vs. ±5% C-series variants |
| Differential Resistance (rdif) | 50 Ω typical at IZ = 5 mA; determines load regulation error under current variation |
| Temperature Coefficient (SZ) | +10.4 mV/K at IZ = 5 mA; quantifies VZ drift per °C rise in junction temperature |
| Reverse Leakage (IR) | 100 nA max at VR = 0.7 × VZnom (11.2 V); impacts quiescent current in high-impedance references |
| Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C; sets maximum continuous DC power handling on standard PCB |
| Package | SOD27 (DO-35); hermetically sealed glass axial package with cathode band marking |
Pinout & Package
Two-terminal axial-leaded SOD27 (DO-35) glass package. Cathode identified by colored band; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference node | Connected to lower potential side of regulation circuit; forms reference ground return path |
| Cathode | Reverse breakdown terminal / Output reference node | Marked with band; connected to regulated voltage node; carries Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2% voltage tolerance | Enables precise 16 V reference without post-calibration in industrial sensor signal chains |
| 500 mW total power dissipation | Supports robust operation in 12–24 V rail monitoring circuits with minimal heatsinking |
| Hermetically sealed glass package | Ensures long-term parameter stability in humid or chemically aggressive environments |
| Non-repetitive 40 W surge rating | Withstands transient overvoltage events (e.g., ESD, inductive kickback) up to 100 μs duration |
Applications
| Industrial Power Supply Feedback | Automotive Sensor Biasing |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference node setting TL431 or optocoupler LED current threshold. Use Value: ±2% VZ tolerance ensures ±1% output regulation accuracy across temperature and line variations. | Use Scenario: Providing stable 16 V bias to MEMS pressure sensor front-end amplifiers in engine control units. IC Role / Device Role / Timing Role: Low-drift voltage reference for analog signal conditioning circuitry. Use Value: +10.4 mV/K TC allows predictable compensation when paired with NTC thermistors in same thermal zone. |
| Consumer Device Overvoltage Protection | Test & Measurement Reference Divider |
Use Scenario: Clamping transient surges on 15 V logic rails in smart home hubs during hot-plug events. IC Role / Device Role / Timing Role: Passive shunt protector absorbing short-duration energy spikes before IC damage occurs. Use Value: 40 W non-repetitive peak power rating handles 100 μs transients up to 1.5 A without degradation. | Use Scenario: Precision voltage divider leg in handheld multimeter input attenuation networks. IC Role / Device Role / Timing Role: Stable reference node enabling accurate 10:1 or 100:1 scaling of unknown input voltages. Use Value: 50 Ω dynamic impedance minimizes loading error when driving high-impedance ADC inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245B,215 | Same 16 V nominal, ±5% tolerance, SOT-23 surface-mount package | Lacks axial lead mechanical robustness; unsuitable for high-vibration environments | Select for space-constrained PCBs where reflow compatibility and automated assembly are required |
| BZX79-C16,113 | Same DO-35 package but ±5% tolerance (15.2–16.8 V range) | Higher VZ uncertainty increases output regulation error in closed-loop systems | Select only for cost-sensitive, non-critical biasing where ±5% VZ is acceptable |
Compared with MMBZ5245B,215 and BZX79-C16,113, the BZX79-B16,133 delivers superior voltage accuracy and mechanical reliability for through-hole industrial designs requiring long-term stability and surge resilience.
Availability
BZX79-B16,133 is available at Aetrix Electronics and suitable for industrial power supply feedback, automotive sensor biasing, consumer overvoltage protection, and test & measurement reference divider applications requiring stable component supply and long-lifecycle support.
Supply support for BZX79-B16,133 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, specializing in high-volume, high-reliability components for automotive and industrial markets.
The BZX79 series belongs to Nexperia's legacy Zener diode product line, engineered for precision voltage regulation in cost-sensitive, high-reliability analog circuits where stability, surge immunity, and long-term parameter consistency are essential.
FAQ
What is the maximum continuous forward current for BZX79-B16,133?
The maximum continuous forward current is 250 mA at Tamb = 50 °C, per the Absolute Maximum Ratings table. This rating assumes no metallization pad on the PCB and lead length ≤8 mm. Exceeding this current risks thermal runaway due to the diode's 380 K/W junction-to-ambient thermal resistance.
How does the temperature coefficient affect regulation accuracy over temperature?
With a +10.4 mV/K coefficient at 5 mA, the Zener voltage increases by ~1.04 V over a 100 °C junction temperature rise. In a 16 V reference, this yields ~6.5% drift - making thermal management or TC-matching with other components essential for sub-1% accuracy across wide ambient ranges.
Can BZX79-B16,133 be used in AC signal clipping applications?
No - it is not rated for bidirectional operation. The device is optimized for DC reverse-bias regulation. Forward conduction is limited to 0.9 V at 10 mA, and repeated AC cycling may cause parameter shift due to thermal stress in the glass package. Use dedicated clipping diodes like BAS16 for such roles.
What is the non-repetitive peak reverse current rating?
The non-repetitive peak reverse current is 1.5 A for a 100 μs square-wave pulse at Tj = 25 °C prior to surge, derived from the 40 W peak power rating and nominal 16 V VZ. This value drops significantly if junction temperature exceeds 25 °C before the surge event.
BZX79-B16,133 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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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-B16,133 FAQ
1.How can I place an order for BZX79-B16,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-B16,133 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-B16,133 reliable?
The price and inventory of BZX79-B16,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-B16,133 is usually 5 days.
3.What payment methods are accepted for BZX79-B16,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-B16,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-B16,133?
BZX79-B16,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-B16,133 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-B16,133?
For technical support, including BZX79-B16,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-B16,133 requirements.
6.How does Aetrix verify that BZX79-B16,133 is sourced from the original manufacturer or authorized distributors?
All BZX79-B16,133 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-B16,133 meets industry standards.
7.What is the process for return or replacement of BZX79-B16,133?
All BZX79-B16,133 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-B16,133, 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-B16,133 part is unused and in its original packaging.
Return procedure for BZX79-B16,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX79-B16,133 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 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…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
