My Inquiry
My Account
Nexperia USA Inc. BZX79-B13,133
- Part No.:
- BZX79-B13,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-B13,133.pdf
- Description:
- DIODE ZENER 13V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:373
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX79-B13,133 from Nexperia is a ±2% tolerance Zener voltage regulator diode with nominal 13 V breakdown voltage at 5 mA test current, 50 Ω typical differential resistance, and −65 °C to +200 °C junction temperature range. It operates as a low-power voltage reference in bias networks, power supply feedback paths, and overvoltage protection circuits, delivering stable regulation under 400 mW continuous dissipation at 50 °C ambient.
For engineers reviewing the BZX79-B13,133 datasheet, BZX79-B13,133 pinout, BZX79-B13,133 application, or BZX79-B13,133 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (380 K/W), non-repetitive peak reverse power (40 W), and DO-35 package compatibility with through-hole PCB assembly.
Technical Context
This device functions as a two-terminal silicon Zener diode operating in reverse breakdown mode. Its voltage regulation relies on controlled avalanche and Zener mechanisms, with temperature coefficient of +7.0 mV/K at 5 mA, enabling predictable drift compensation in precision references.
Designed for DC stabilization rather than transient suppression, it exhibits 100 nA maximum reverse leakage at 8 V, 50 Ω max differential resistance at 5 mA, and 150 pF diode capacitance at 0 V - parameters critical for low-noise analog biasing and feedback loop stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.7 V to 13.3 V at IZ = 5 mA - ensures tight output voltage control in reference circuits |
| Tolerance | ±2% - supports high-accuracy voltage setting without post-calibration |
| Differential Resistance (rdiff) | 50 Ω max at IZ = 5 mA - minimizes load-induced voltage variation |
| Reverse Leakage Current (IR) | 100 nA max at VR = 8 V - preserves low quiescent current in battery-powered designs |
| Total Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C with 8 mm leads - defines safe continuous operating envelope |
| Thermal Resistance (Rth j-a) | 380 K/W - determines junction temperature rise under steady-state loading |
| Non-repetitive Peak Power (PZSM) | 40 W for 100 μs pulse - enables brief surge handling in clamp applications |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking; lead diameter 0.56 mm, body length 4.25 mm, overall length 25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in shunt regulator configuration |
| Cathode | Reverse breakdown terminal / regulated output node | Provides stable 13 V reference when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct use in precision references without trimming resistors |
| Hermetic glass SOD27 package | Ensures long-term parameter stability and moisture resistance in industrial environments |
| 500 mW total power rating | Supports robust operation in compact through-hole power supply designs |
| +7.0 mV/K temperature coefficient | Allows predictable thermal drift modeling for compensated reference topologies |
| 100 nA max reverse leakage at 8 V | Maintains accuracy in high-impedance sensing and battery-backed circuits |
Applications
| Power Supply Feedback Reference | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Stabilizing the feedback node of an isolated flyback converter's optocoupler-based regulation loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 13 V threshold to error amplifier input. Use Value: Maintains ±1% output voltage accuracy across line/load/temperature variations due to tight 12.7–13.3 V tolerance and low rdiff. | Use Scenario: Generating a clean reset signal for an ARM Cortex-M0 microcontroller during brown-out conditions. IC Role / Device Role / Timing Role: Zener-clamped voltage monitor triggering external reset IC at 13 V threshold. Use Value: Prevents false resets by rejecting noise spikes via 100 nA leakage and 50 Ω dynamic impedance. |
| ADC Voltage Reference Buffer | Overvoltage Clamp for Sensor Interface |
Use Scenario: Biasing the reference input of a 12-bit SAR ADC in a data acquisition module. IC Role / Device Role / Timing Role: Low-drift voltage source establishing full-scale input range for analog front-end. Use Value: Delivers <1 LSB error contribution over −40 °C to +85 °C using +7.0 mV/K TC and hermetic packaging. | Use Scenario: Protecting a 3.3 V I²C bus line from ESD transients induced by hot-plug connectors. IC Role / Device Role / Timing Role: Passive clamp limiting voltage excursions to 13 V during fast-rising surges. Use Value: Absorbs 40 W peak energy in 100 μs pulses without degradation, preserving downstream logic 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 |
|---|---|---|---|
| MMBZ5242B,215 | Surface-mount SOT-23 package; same 13 V ±5%; 100 Ω rdiff; 100 nA IR | Requires PCB redesign for SMT assembly; higher thermal resistance limits power handling | Select for space-constrained boards where reflow compatibility outweighs through-hole serviceability |
| 1N4742A | Through-hole DO-41 package; 12 V ±5%; 9 Ω rdiff; 5 μA IR at 9 V | Lower voltage grade and looser tolerance; better low-current regulation but less precision | Select for cost-sensitive 12 V systems where ±5% tolerance suffices and tighter rdiff improves load regulation |
Compared with MMBZ5242B,215 and 1N4742A, BZX79-B13,133 offers superior voltage accuracy (±2% vs ±5%), hermetic reliability for harsh environments, and optimized thermal performance in legacy through-hole layouts - making it preferred for industrial instrumentation and automotive sub-systems requiring long-term calibration stability.
Availability
BZX79-B13,133 is available at Aetrix Electronics and suitable for power supply feedback references, microcontroller reset circuits, ADC voltage reference buffers, and overvoltage clamps requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for BZX79-B13,133 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, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, consumer, and wearable markets with high-reliability components.
The BZX79 series belongs to Nexperia's standard Zener diode product line, engineered specifically for low-power voltage regulation and reference applications demanding tight tolerance, hermetic stability, and proven field reliability.
FAQ
What is the maximum continuous power dissipation for BZX79-B13,133 at 70 °C ambient?
At 70 °C ambient, the maximum continuous power dissipation is derated to 300 mW based on the 380 K/W junction-to-ambient thermal resistance and 200 °C maximum junction temperature limit. This follows the linear derating curve specified in the datasheet's limiting values table, where power drops 1.33 mW per °C above 50 °C ambient.
Does BZX79-B13,133 have a defined forward voltage specification?
Yes - the forward voltage is specified as 0.9 V maximum at 10 mA forward current and 25 °C junction temperature. This value is measured under DC conditions and reflects the diode's silicon PN junction characteristics, relevant for polarity-check circuits or dual-purpose bias networks.
Can BZX79-B13,133 be used in AC signal clipping applications?
No - it is not characterized or rated for symmetrical AC clipping. Its design targets DC voltage regulation and reference functions. For AC clipping, bidirectional TVS diodes or back-to-back Zener configurations with appropriate peak power ratings should be used instead.
What does the '133' suffix indicate in BZX79-B13,133?
The '133' suffix denotes the specific ordering variant per Nexperia's packaging and reel specifications: it identifies the 10,000-piece 12 mm tape-and-reel format with standard orientation and moisture sensitivity level (MSL) 1 - consistent with industry-standard JEDEC J-STD-020 compliance for through-hole devices.
BZX79-B13,133 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):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-B13,133 FAQ
1.How can I place an order for BZX79-B13,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-B13,133 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-B13,133 reliable?
The price and inventory of BZX79-B13,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-B13,133 is usually 5 days.
3.What payment methods are accepted for BZX79-B13,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-B13,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-B13,133?
BZX79-B13,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-B13,133 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-B13,133?
For technical support, including BZX79-B13,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-B13,133 requirements.
6.How does Aetrix verify that BZX79-B13,133 is sourced from the original manufacturer or authorized distributors?
All BZX79-B13,133 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-B13,133 meets industry standards.
7.What is the process for return or replacement of BZX79-B13,133?
All BZX79-B13,133 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-B13,133, 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-B13,133 part is unused and in its original packaging.
Return procedure for BZX79-B13,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX79-B13,133 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…
