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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZV55-B12,135

Name: BZV55-B12,135
Brand: Nexperia USA Inc.
SKU: BZV55-B12,135
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZV55-B12,135

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: DO-213AC, MINI-MELF, SOD-80

Datasheet:: BZV55-B12,135.pdf

Description:: DIODE ZENER 12V 500MW LLDS

Quantity:: RFQ Add To RFQ list

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Inventory:818

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Product details

Overview

BZV55-B12,135 from Nexperia is a low-power Zener voltage regulator diode in a hermetically sealed glass SOD80C surface-mount package, rated for 12 V nominal regulation at 5 mA with ±2 % tolerance, 50 Ω typical differential resistance, and 6.0 V reverse surge capability. It operates as a precision shunt reference in power supply feedback loops, voltage clamping circuits, and overvoltage protection stages for industrial sensor interfaces and microcontroller I/O conditioning.

For engineers reviewing the BZV55-B12,135 datasheet, BZV55-B12,135 pinout, BZV55-B12,135 application, or BZV55-B12,135 equivalent, this page delivers verified electrical parameters, thermal behavior under transient surges, SOD80C footprint compatibility, and validated alternative parts for voltage reference design continuity.

Technical Context

This device functions as a two-terminal shunt regulator, maintaining stable output voltage across its cathode-anode terminals when reverse-biased above its 11.8–12.2 V breakdown range. Its low 50 Ω differential resistance ensures minimal voltage deviation under load current changes up to 250 mA forward or 6.0 A non-repetitive reverse surge (100 µs square wave).

Thermal performance is defined by junction-to-ambient resistance of 380 K/W in free air and 300 K/W to solder point, enabling operation from −65 °C to +200 °C junction temperature. The −2.0 to +10.0 mV/K temperature coefficient supports predictable drift compensation in ambient-stable applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	12 V (11.8–12.2 V min/max at I_Z = 5 mA; enables precise 12 V rail referencing)
Tolerance	±2 % (B-series grade; supports tight-regulation designs without post-calibration)
Differential Resistance	50 Ω typ. (low impedance improves regulation stability against current variation)
Non-repetitive Peak Reverse Power	40 W (withstands 100 µs transients up to 6.0 A at T_j = 25 °C)
Total Power Dissipation	500 mW (T_amb ≤ 50 °C on ceramic substrate; defines continuous bias limit)
Reverse Leakage Current	100 nA max. at V_R = 8 V (ensures minimal quiescent current in high-impedance reference nodes)
Forward Voltage	0.9 V max. at I_F = 10 mA (supports bidirectional clamping or LED driver biasing)

Pinout & Package

Hermetically sealed glass SOD80C package: 3.3–3.7 mm length, 1.45–1.60 mm width, 0.3 mm height; cathode marked by band.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode	Connected to regulated voltage node; reverse-bias terminal for Zener operation
2	Anode	Ground or lower-potential reference; completes shunt path during regulation

Key Features

Feature	Design Value
Hermetic glass SMD construction	Prevents moisture ingress and long-term parameter drift in humid environments
Low differential resistance	50 Ω typ. minimizes output voltage shift under dynamic load changes
Two tolerance grades	±2 % (B) and ±5 % (C) options support cost-performance trade-offs in volume production
Wide voltage range coverage	2.4–75 V selection enables single-family sourcing across diverse supply rails
Transient surge robustness	40 W non-repetitive peak power rating protects against ESD and inductive kickback

Applications

Industrial Sensor Signal Conditioning

Microcontroller I/O Protection

Use Scenario: Stabilizing reference voltage for analog front-end amplifiers in 4–20 mA loop transmitters.

IC Role / Device Role / Timing Role: Shunt voltage reference providing 12 V bias to op-amp input stages and ADC reference dividers.

Use Value: ±2 % tolerance and 50 Ω rdif ensure <±15 mV total error across 0–85 °C ambient, meeting SIL-2 signal integrity requirements.

Use Scenario: Clamping GPIO pins against ESD events and bus overvoltage in programmable logic controllers.

IC Role / Device Role / Timing Role: Bidirectional transient suppressor leveraging forward conduction (0.9 V) and reverse Zener action (12 V).

Use Value: 40 W surge rating absorbs IEC 61000-4-2 Level 4 (8 kV contact) pulses without degradation.

DC-DC Converter Feedback Network

Legacy Equipment Voltage Calibration

Use Scenario: Setting output voltage in isolated flyback converters using optocoupler-coupled feedback.

IC Role / Device Role / Timing Role: Precision shunt reference replacing TL431 where lower current and smaller footprint are required.

Use Value: 12 V nominal value matches common 12 V auxiliary rails; SOD80C footprint reduces PCB area by 40 % vs. DO-35.

Use Scenario: Replacing aging 1N4742A diodes in field-service calibration of benchtop power supplies.

IC Role / Device Role / Timing Role: Drop-in mechanical and electrical replacement with identical 12 V/±2 % spec and SOD80C mounting.

Use Value: Same marking band polarity and thermal profile (R_th(j-a) = 380 K/W) ensures no requalification of heatsinking or layout.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX55C12,113	±5 % tolerance, higher 100 Ω rdif, same SOD80C package	Acceptable where 12.0 ±0.6 V tolerance suffices and cost is prioritized	Select for non-critical biasing where tighter regulation is unnecessary
MMSZ5242B-7-F	±5 % tolerance, 30 Ω rdif, SOD-123 package (larger footprint)	Requires PCB pad revision; better regulation than BZX55 but less precise than BZV55-B	Choose when existing SOD-123 land pattern exists and 30 Ω rdif is preferred

Compared with BZV55-B12,135, BZX55C12,113 trades regulation accuracy for cost, while MMSZ5242B-7-F offers lower rdif but demands layout change-making the BZV55-B12,135 optimal for new designs needing ±2 % stability in minimal SMD area.

Availability

BZV55-B12,135 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller I/O protection, and DC-DC converter feedback networks requiring stable component supply and long-term parametric consistency.

Supply support for BZV55-B12,135 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 semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency and miniaturization.

The BZV55 series belongs to Nexperia's precision Zener regulator family, engineered for stable voltage referencing and transient suppression in space-constrained industrial and automotive-adjacent applications.

FAQ

What is the maximum continuous power dissipation for BZV55-B12,135 at 70 °C ambient?

At 70 °C ambient, continuous power dissipation is derated linearly from 500 mW at 50 °C. Using R_th(j-a) = 380 K/W, junction temperature would exceed 200 °C at full 500 mW; thus, maximum safe continuous dissipation is 316 mW to maintain T_j ≤ 150 °C per thermal limits.

Can BZV55-B12,135 replace a 1N4742A in existing through-hole designs?

No-BZV55-B12,135 uses SOD80C surface-mount packaging, while 1N4742A is DO-35 axial-leaded. Direct replacement requires PCB redesign. However, it is functionally equivalent in electrical specs (12 V, ±2 %, 50 Ω rdif), making it suitable for new SMT designs targeting the same regulation performance.

What is the reverse leakage current at 80 % of nominal Zener voltage?

At V_R = 9.6 V (80 % of 12 V), reverse leakage is not explicitly specified in the datasheet. However, Table 7 shows 100 nA max at V_R = 8 V for BZV55-B12; extrapolation suggests <200 nA at 9.6 V, consistent with exponential diode leakage behavior below breakdown.

Does BZV55-B12,135 meet AEC-Q200 for automotive use?

No-this part is not automotive-qualified. The datasheet explicitly states "Non-automotive qualified products" and excludes AEC-Q200 testing. It is intended for industrial, consumer, and commercial applications only; use in automotive systems requires formal qualification and validation by the end customer.

BZV55-B12,135 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: DO-213AC, MINI-MELF, SOD-80

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 12 V

Tolerance:: ±2%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 25 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:: Surface Mount

Supplier Device Package:: LLDS; MiniMelf

BZV55-B12,135 FAQ

1.How can I place an order for BZV55-B12,135 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZV55-B12,135 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 BZV55-B12,135 reliable?

The price and inventory of BZV55-B12,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV55-B12,135 is usually 5 days.

3.What payment methods are accepted for BZV55-B12,135?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV55-B12,135 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZV55-B12,135?

BZV55-B12,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZV55-B12,135 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 BZV55-B12,135?

For technical support, including BZV55-B12,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV55-B12,135 requirements.

6.How does Aetrix verify that BZV55-B12,135 is sourced from the original manufacturer or authorized distributors?

All BZV55-B12,135 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 BZV55-B12,135 meets industry standards.

7.What is the process for return or replacement of BZV55-B12,135?

All BZV55-B12,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZV55-B12,135, 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 BZV55-B12,135 part is unused and in its original packaging.

Return procedure for BZV55-B12,135:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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