My Inquiry
My Account
Nexperia USA Inc. BZT52H-B68,115
- Part No.:
- BZT52H-B68,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B68,115.pdf
- Description:
- DIODE ZENER 68V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,846
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT52H-B68,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD123F package, rated for 68 V nominal breakdown voltage at IZ = 2 mA, with 830 mW total power dissipation and 400 Ω maximum differential resistance - used for precision voltage reference and overvoltage clamping in low-power DC supply rails.
For engineers reviewing the BZT52H-B68,115 datasheet, BZT52H-B68,115 pinout, BZT52H-B68,115 application, or BZT52H-B68,115 equivalent, this part supports stable regulation in space-constrained PCBs where thermal resistance to solder point (150 K/W) and low reverse leakage (<1 μA at 54.4 V) are critical for long-term bias stability.
Technical Context
This Zener diode operates in reverse-biased avalanche mode with a temperature coefficient of +1.2 mV/K at IZ = 2 mA, enabling predictable drift compensation in reference circuits. Its SOD123F package features flat leads optimized for reflow soldering on FR4 PCBs with single-sided copper.
It delivers 68 V regulation with ±2 % tolerance across ambient temperatures from −65 °C to +150 °C, and supports non-repetitive surge currents up to 0.25 A (100 μs pulse), making it suitable for transient suppression in industrial sensor interfaces and power supply feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 68 V nominal at IZ = 2 mA; ±2 % tolerance ensures tight reference accuracy for feedback networks. |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C; enables continuous operation in compact layouts without forced cooling. |
| Differential Resistance rdif | ≤ 400 Ω at IZ = 2 mA; maintains low output impedance for stable regulation under load variation. |
| Reverse Leakage IR | < 1 μA at VR = 54.4 V; minimizes quiescent current loss in battery-powered monitoring circuits. |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA; ensures low conduction loss when used bidirectionally or in series protection. |
| Thermal Resistance Rth(j-sp) | 150 K/W junction-to-solder-point; allows reliable thermal transfer to PCB copper for sustained 68 V clamping duty. |
| Non-repetitive Peak Current IZSM | 0.25 A (100 μs pulse); provides robust ESD/overvoltage immunity in I/O protection designs. |
Pinout & Package
SOD123F surface-mount plastic package: 2-lead, flat lead, small outline; dimensions 3.5 mm × 1.7 mm × 1.0 mm (L × W × H); cathode marked by bar on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive terminal for reverse-bias operation. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % voltage tolerance | Enables high-accuracy voltage references without external trimming in analog front-ends. |
| 830 mW power rating | Supports continuous regulation in 5–12 V auxiliary supplies powering microcontrollers or sensors. |
| SOD123F footprint | Reduces board area by >40 % vs. DO-35; compatible with standard reflow profiles per J-STD-020. |
| +1.2 mV/K tempco | Allows predictable drift compensation in temperature-stable reference dividers for ADCs. |
| Low IR < 1 μA @ 54.4 V | Minimizes standby current in always-on IoT nodes and low-power supervisory circuits. |
Applications
| Power Supply Feedback | Sensor Bias Reference |
|---|---|
Use Scenario: Stabilizing output voltage of isolated DC-DC converters via optocoupler feedback loop. IC Role / Device Role: Zener reference providing precise 68 V threshold to drive TL431-like shunt regulator input. Use Value: Tight ±2 % tolerance ensures <±1 % output regulation error across line/load/temperature. |
Use Scenario: Providing stable excitation voltage to resistive bridge sensors in industrial transmitters. IC Role / Device Role: Precision voltage clamp setting bias point for Wheatstone bridge amplification stage. Use Value: Low 400 Ω dynamic resistance maintains constant current despite bridge impedance shifts. |
| Overvoltage Clamp | Microcontroller I/O Protection |
Use Scenario: Protecting 60 V-rated CAN bus transceivers from load-dump transients in automotive subsystems. IC Role / Device Role: Shunt clamping device limiting rail voltage to 68 V during 12 V system surges. Use Value: 0.25 A non-repetitive peak current rating absorbs ISO 7637-2 Pulse 5a energy without failure. |
Use Scenario: Safeguarding GPIO pins of ARM Cortex-M MCUs against ESD and accidental 24 V miswiring. IC Role / Device Role: Bidirectional transient suppressor placed between I/O line and ground. Use Value: 0.9 V forward drop ensures safe clamping below MCU absolute max ratings during positive faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-C68,115 | ±5 % tolerance, higher 640 Ω rdif, same 68 V nominal VZ | Acceptable for non-critical biasing where cost sensitivity outweighs accuracy needs | Select when budget constraints dominate and ±5 % regulation error is acceptable in feedback loops |
| MMSZ5268ET1G | ±5 % tolerance, SOD-123 package, 500 mW Ptot, 68 V VZ at IZ = 20 mA | Lower power rating limits continuous clamping duty; different test current shifts operating point | Choose only for legacy designs requiring direct replacement; verify thermal derating at 68 V load |
Compared with BZT52H-C68,115 and MMSZ5268ET1G, the BZT52H-B68,115 offers superior voltage accuracy and thermal performance for precision regulation, while its 830 mW rating supports longer-duration transients than the 500 mW alternative.
Availability
BZT52H-B68,115 is available at Aetrix Electronics and suitable for industrial power supplies, sensor signal conditioning, overvoltage protection circuits, and embedded MCU I/O safeguarding requiring stable component supply and traceable sourcing.
Supply support for BZT52H-B68,115 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, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-effective, space-efficient voltage regulation and clamping in consumer, industrial, and communication equipment.
FAQ
What is the recommended soldering method for BZT52H-B68,115?
Reflow soldering is the only recommended method per Nexperia's data sheet. The SOD123F package must be mounted on an FR4 PCB with single-sided copper using the footprint specified in Figure 12: 2.8 mm × 1.6 mm solder land, 1.1 mm × 1.2 mm paste deposit per pad, and peak temperature ≤ 260 °C per J-STD-020.
Does BZT52H-B68,115 meet automotive qualification standards?
No. Per Revision 7 (January 2023), BZT52H-B68,115 is explicitly designated as non-automotive qualified. It lacks AEC-Q200 testing and automotive-grade traceability. For automotive use, Nexperia offers separate -Q qualified variants such as BZT52H-B68,135.
How does temperature affect the 68 V breakdown voltage?
At IZ = 2 mA, the temperature coefficient is +1.2 mV/K. This means VZ increases by approximately 120 mV over a 100 °C rise (e.g., from 25 °C to 125 °C), resulting in ~68.12 V at 125 °C - a predictable, linear shift usable for compensated reference designs.
Can BZT52H-B68,115 be used in series for higher voltage clamping?
Yes, but with caution: series connection multiplies both VZ and dynamic resistance. Two BZT52H-B68,115 units yield ~136 V nominal clamping but ~800 Ω combined rdif, degrading regulation stiffness. Matching unit selection and thermal coupling are required to avoid current hogging.
BZT52H-B68,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 68 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 160 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 47.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52H-B68,115 FAQ
1.How can I place an order for BZT52H-B68,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B68,115 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 BZT52H-B68,115 reliable?
The price and inventory of BZT52H-B68,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B68,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-B68,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B68,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B68,115?
BZT52H-B68,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B68,115 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 BZT52H-B68,115?
For technical support, including BZT52H-B68,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B68,115 requirements.
6.How does Aetrix verify that BZT52H-B68,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-B68,115 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 BZT52H-B68,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-B68,115?
All BZT52H-B68,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B68,115, 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 BZT52H-B68,115 part is unused and in its original packaging.
Return procedure for BZT52H-B68,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-B68,115 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…
