My Inquiry
My Account
Nexperia USA Inc. BZT52-C9V1J
- Part No.:
- BZT52-C9V1J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C9V1J.pdf
- Description:
- DIODE ZENER 9.05V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,060
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT52-C9V1J from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 9.1 V nominal regulation at 5 mA, with 100 Ω max differential resistance, 0.5 μA reverse current at 7.2 V, and 590 mW total power dissipation at 25 °C ambient - used for precision voltage reference and low-power rail clamping in sensor signal conditioning circuits.
For engineers reviewing the BZT52-C9V1J datasheet, BZT52-C9V1J pinout, BZT52-C9V1J application, or BZT52-C9V1J equivalent, this page delivers verified Zener voltage, thermal resistance, cathode/anode terminal mapping, SOD123 footprint compatibility, and direct alternatives for 9.1 V regulation in space-constrained PCBs.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 9.1 V output across load variations, with temperature coefficient of +3.8 to +7.0 mV/K at 5 mA, enabling predictable drift compensation in mid-voltage analog references. Its low 100 Ω differential resistance ensures minimal voltage shift under ±1 mA current change.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it achieves 55 K/W junction-to-solder-point thermal resistance when mounted with 1 cm² cathode pad - critical for sustained 350 mW pulse handling and 590 mW DC derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 9.1 V nominal at IZ = 5 mA; ±5 % tolerance (8.5–9.6 V range) defines usable regulation window in feedback loops. |
| Differential Resistance rdif | 100 Ω max at IZ = 5 mA; limits output voltage variation to ≤100 mV per 1 mA load change. |
| Reverse Current IR | 0.5 μA max at VR = 7.2 V; ensures low standby leakage in battery-powered voltage monitors. |
| Total Power Dissipation Ptot | 590 mW at Tamb ≤ 25 °C on FR4 with 1 cm² cathode pad; sets maximum continuous DC bias capability. |
| Forward Voltage VF | 0.9 V max at IF = 10 mA; defines conduction loss when used bidirectionally or as ESD clamp. |
| Junction Temperature Tj | 150 °C absolute maximum; constrains thermal design margin when operating near Ptot limit. |
| Thermal Resistance Rth(j-sp) | 55 K/W junction-to-solder-point; enables accurate thermal modeling for pad-based heat extraction. |
Pinout & Package
SOD123 plastic surface-mount package: 2.80 mm × 1.70 mm body, 0.70 mm lead pitch, cathode marked by band on end face; optimized for reflow soldering with 0.81 mm × 2.36 mm Cu pad footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking band identifies this terminal for correct PCB orientation. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased during Zener operation. |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective 9.1 V reference without trimming, suitable for non-critical supply monitoring. |
| Low 100 Ω differential resistance | Maintains regulation stability under dynamic load shifts typical in microcontroller reset circuits. |
| 590 mW power rating at 25 °C | Supports sustained clamping in 3.3 V/5 V rail protection without external heatsinking. |
| SOD123 package footprint | Reduces board area by >40 % vs. DO-35; compatible with standard 0805 reflow profiles. |
| 0.5 μA max reverse leakage at 7.2 V | Minimizes quiescent current draw in always-on sensor bias networks. |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Circuit Reference |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode provides fixed 9.1 V reference for op-amp gain-setting network. Use Value: 100 Ω rdif ensures <10 mV output shift across 0–100 μA sensor bias variation. |
Use Scenario: Generating precise reset threshold for ARM Cortex-M0+ MCUs operating at 3.3 V supply. IC Role / Device Role / Timing Role: Reverse-biased Zener clamps reset line to 9.1 V until RC decay triggers POR. Use Value: ±5 % VZ tolerance aligns with MCU's 2.7–3.6 V reset window when scaled via resistor divider. |
| Low-Power Battery Voltage Monitor | RS-485 Transceiver Bias Clamp |
|
Use Scenario: Detecting end-of-life voltage in coin-cell powered IoT endpoint nodes. IC Role / Device Role / Timing Role: Zener referenced comparator senses when Li-MnO₂ cell drops below 2.4 V. Use Value: 0.5 μA IR at 7.2 V prevents measurable drain on 220 mAh CR2032 over 10-year shelf life. |
Use Scenario: Limiting common-mode voltage swing on RS-485 bus lines in factory automation gateways. IC Role / Device Role / Timing Role: Bidirectional Zener pair (anode-to-anode) clamps differential transients to ±9.1 V. Use Value: 0.9 V VF ensures fast turn-on during ESD events while limiting forward conduction loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5235BLT1G | 9.1 V nominal, ±5 %, 500 mW Ptot, SOD-123 package, 150 Ω rdif | Higher differential resistance increases regulation error under load step; lower power rating reduces surge margin. | Select when legacy ON Semi BOM alignment required and 150 Ω rdif meets system error budget. |
| Vishay BZX84-C9V1 | 9.1 V nominal, ±5 %, 300 mW Ptot, SOT-23 package, 120 Ω rdif | Lower power rating restricts DC clamping duty cycle; SOT-23 requires different footprint and thermal pad layout. | Choose only if SOT-23 is mandated and thermal constraints allow 300 mW derating. |
Compared with MMBZ5235BLT1G and BZX84-C9V1, BZT52-C9V1J offers superior thermal performance (55 K/W vs. ≥100 K/W), higher DC power headroom (590 mW), and tighter regulation stability (100 Ω rdif) - making it optimal for high-reliability industrial voltage references where long-term drift and thermal robustness are critical.
Availability
BZT52-C9V1J is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset circuits, low-power battery monitors, and RS-485 bus protection requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZT52-C9V1J 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 focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The BZT52 series targets cost-sensitive, space-constrained applications needing stable voltage references - designed specifically for SMD integration into consumer, industrial, and computing systems where precision, thermal efficiency, and manufacturability are prioritized.
FAQ
What is the maximum continuous reverse current the BZT52-C9V1J can handle at 25 °C?
The device supports up to 250 mA forward current, but for Zener operation, its maximum continuous reverse current is limited by power dissipation: at 9.1 V, IZ(max) = 590 mW / 9.1 V ≈ 65 mA at 25 °C ambient with proper PCB thermal pad. Derating is required above 25 °C per the 55 K/W junction-to-solder-point thermal resistance.
How does the ±5 % tolerance affect accuracy in a 3.3 V microcontroller reset circuit using a resistor divider?
When configured as a 9.1 V Zener feeding a 2:1 resistor divider to generate 3.03 V at the MCU reset pin, the ±5 % VZ tolerance translates to ±0.455 V variation, resulting in ±0.15 V at the divider output - well within the typical 2.7–3.6 V reset window and eliminating need for calibration.
Can BZT52-C9V1J be used for bidirectional transient suppression in USB data lines?
No - it is a unidirectional Zener diode with cathode/anode polarity. For bidirectional ESD protection on USB lines, a dedicated TVS array like PESD5V0S1BA is required. BZT52-C9V1J may only clamp in one direction unless paired anode-to-anode with another unit, which introduces layout complexity and mismatch risk.
Is the SOD123 footprint compatible with automated optical inspection (AOI) systems?
Yes - the SOD123 package has standardized 2.80 mm × 1.70 mm body dimensions and visible cathode band marking, meeting IPC-7351B Class L requirements for AOI fiducial detection. The 0.70 mm lead pitch and 0.81 mm × 2.36 mm copper pad size ensure reliable solder joint inspection at 10 μm pixel resolution.
BZT52-C9V1J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.05 V
- Tolerance:
- ±6.1%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C9V1J FAQ
1.How can I place an order for BZT52-C9V1J through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C9V1J 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 BZT52-C9V1J reliable?
The price and inventory of BZT52-C9V1J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C9V1J is usually 5 days.
3.What payment methods are accepted for BZT52-C9V1J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C9V1J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C9V1J?
BZT52-C9V1J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C9V1J 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 BZT52-C9V1J?
For technical support, including BZT52-C9V1J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C9V1J requirements.
6.How does Aetrix verify that BZT52-C9V1J is sourced from the original manufacturer or authorized distributors?
All BZT52-C9V1J 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 BZT52-C9V1J meets industry standards.
7.What is the process for return or replacement of BZT52-C9V1J?
All BZT52-C9V1J units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C9V1J, 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 BZT52-C9V1J part is unused and in its original packaging.
Return procedure for BZT52-C9V1J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52-C9V1J 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…
