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Diodes Incorporated BZT52C2V7T-7
- Part No.:
- BZT52C2V7T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C2V7T-7.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:2,487
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Product details
Overview
BZT52C2V7T-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 2.7 V (±0.2 V tolerance), 300 mW power dissipation, and SOD523 package. It provides precise low-voltage regulation in space-constrained circuits such as voltage reference rails for microcontroller I/O protection, battery monitoring comparators, and low-dropout regulator feedback networks.
For engineers reviewing the BZT52C2V7T-7 datasheet, BZT52C2V7T-7 pinout, BZT52C2V7T-7 application, or BZT52C2V7T-7 equivalent, key selection criteria include zener voltage accuracy at 5 mA test current, low dynamic impedance (≤100 Ω at 1 kHz), temperature coefficient (−3.5 mV/°C), and reverse leakage (≤20 µA at 1.0 V), all critical for stable biasing in portable and automotive sensor interfaces.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its −3.5 mV/°C temperature coefficient ensures predictable drift behavior near room temperature, and its 100 Ω maximum zener impedance at 1 kHz supports fast transient response in feedback loops.
The device is rated for 300 mW power dissipation on FR-4 PCB with 2 oz copper and 1.92 mm² pad area, with thermal resistance junction-to-ambient of 417 °C/W. It features a cathode band marking and matte tin–annealed alloy 42 leads, fully RoHS-compliant and halogen-free per Diodes' "Green" definition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal, 2.5–2.9 V range at 5 mA - defines stable regulation point for low-voltage analog references |
| Power Dissipation (PD) | 300 mW - sets maximum continuous power handling on standard FR-4 layout without forced cooling |
| Zener Impedance (ZZT) | ≤100 Ω at 1 kHz - ensures minimal AC ripple transmission in precision voltage clamp applications |
| Reverse Leakage (IR) | ≤20 µA at VR = 1.0 V - guarantees low standby current in battery-powered voltage monitor circuits |
| Temperature Coefficient | −3.5 mV/°C - enables predictable voltage drift compensation in temperature-sensitive sensor signal chains |
| Package | SOD523 - 1.25 mm × 0.85 mm footprint with 0.65 mm height, suitable for high-density PCB layouts |
Pinout & Package
Package: SOD523 - ultra-compact surface-mount plastic package with cathode band marking; dimensions: 1.25 mm (E) × 0.85 mm (D) × 0.65 mm (He) max; weight ≈ 0.001 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; forms reference return path in shunt regulator topology |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input supply or signal node requiring clamped/stabilized voltage; carries full zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD523 package | Enables placement in <1.0 mm board height constraints, e.g., wearable sensor modules and slim IoT edge nodes |
| Totally lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900 ppm Br/Cl and <1000 ppm Sb - required for automotive and medical OEM compliance |
| JEDEC-qualified reliability | Validated to AEC-Q200 stress test standards for high-reliability industrial and automotive applications |
| Cathode band polarity marking | Ensures unambiguous orientation during automated pick-and-place assembly, reducing SMT line defects |
Applications
| USB Port ESD Protection Clamp | Microcontroller Reset Voltage Reference |
|---|---|
|
Use Scenario: Clamping transient overvoltage on USB D+/D− lines during ESD events to prevent interface IC damage. IC Role / Device Role / Timing Role: Shunt Zener acting as low-voltage crowbar element, triggered before TVS diode threshold in multi-stage protection schemes. Use Value: 2.7 V breakdown allows safe clamping below USB 2.0 data line logic high (3.3 V), preserving signal integrity while diverting >8 kV HBM surges. |
Use Scenario: Providing stable reset threshold for 3.3 V microcontrollers where internal brown-out detection lacks precision. IC Role / Device Role / Timing Role: Precision voltage reference in RC-based reset generator circuit, defining exact reset release voltage. Use Value: ±0.2 V tolerance at 5 mA ensures reset assertion within 2.5–2.9 V window, eliminating false resets during battery voltage sag. |
| Automotive Cabin Temperature Sensor Bias | Lithium-Ion Battery Cell Monitor Reference |
|
Use Scenario: Biasing NTC thermistor in HVAC cabin temperature sensing circuit across −40°C to +125°C ambient range. IC Role / Device Role / Timing Role: Stable voltage source for constant-current excitation of thermistor bridge, minimizing self-heating error. Use Value: −3.5 mV/°C TC matches typical NTC sensitivity slope, enabling first-order temperature compensation without additional op-amps. |
Use Scenario: Setting reference voltage for comparator-based cell overvoltage detection in 2-cell Li-ion packs (max 8.4 V). IC Role / Device Role / Timing Role: Low-power voltage divider node in high-impedance monitoring path, minimizing quiescent drain on battery. Use Value: 20 µA max reverse leakage at 1.0 V ensures <100 nA total divider current, extending battery shelf life beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5223BS-7-F | Zener voltage 2.7 V, but SOT-323 package (1.7 mm × 1.3 mm); 200 mW PD; higher ZZT (120 Ω) | Larger footprint and lower power rating limit use in ultra-dense layouts or higher-current regulation | Select when existing SOT-323 land pattern must be reused; verify thermal margin at 5 mA continuous load |
| BZX384-C2V7,115 | Zener voltage 2.7 V, SOD-323 package (1.7 mm × 1.3 mm); 300 mW PD; tighter VZ tolerance (±5%) | Same power rating but larger size reduces board density; tighter tolerance adds cost without benefit in non-critical biasing | Prefer only if legacy SOD-323 footprint is fixed and tighter initial calibration is required |
Compared with MMBZ5223BS-7-F and BZX384-C2V7,115, the BZT52C2V7T-7 delivers identical 2.7 V regulation in the smallest available footprint (SOD523), with lowest thermal resistance (417 °C/W) and best-in-class zener impedance (≤100 Ω), making it optimal for miniaturized, high-stability analog sensing nodes.
Availability
BZT52C2V7T-7 is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset supervision, automotive cabin sensor biasing, and lithium-ion battery cell monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT52C2V7T-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BZT52 series belongs to Diodes' precision Zener diode product line, engineered specifically for low-voltage reference and voltage-clamp applications in space-constrained, high-reliability systems including automotive, industrial, and portable electronics.
FAQ
What is the maximum continuous zener current for BZT52C2V7T-7 at 25°C ambient?
The device is rated for 300 mW power dissipation. At 2.7 V zener voltage, this corresponds to a maximum continuous zener current of approximately 111 mA (300 mW ÷ 2.7 V). However, derating per Figure 1 applies above 25°C ambient, limiting usable current to ~75 mA at 85°C ambient on standard FR-4 PCB.
Does BZT52C2V7T-7 meet AEC-Q200 requirements for automotive use?
The base BZT52C2V7T-7 is not AEC-Q200 qualified. Diodes offers automotive-grade variants with Q-suffix (e.g., BZT52C2V7TQ-7-F) that are PPAP-capable, manufactured in IATF 16949 certified facilities, and qualified to AEC-Q200 stress tests. These carry explicit automotive qualification documentation and traceability.
Can BZT52C2V7T-7 be used in place of a 2.5 V Zener diode?
No - its nominal zener voltage is 2.7 V with a guaranteed range of 2.5–2.9 V at 5 mA. Substituting it for a true 2.5 V part (e.g., BZT52C2V5T) risks exceeding downstream device absolute maximum ratings or violating system-level voltage thresholds, especially in reset or reference circuits with tight margins.
What is the recommended PCB pad layout for reliable SOD523 reflow soldering?
Diodes specifies a suggested pad layout: G = 0.80 mm, X = 0.60 mm, X1 = 2.00 mm, Y = 0.70 mm, with 0.1 mm radius fillet. Use stencil aperture matching pad size (not oversized), apply Type 3 or 4 solder paste, and follow J-STD-020 moisture sensitivity Level 1 reflow profile to avoid tombstoning or voiding.
BZT52C2V7T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±7%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZT52C2V7T-7 FAQ
1.How can I place an order for BZT52C2V7T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C2V7T-7 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 BZT52C2V7T-7 reliable?
The price and inventory of BZT52C2V7T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C2V7T-7 is usually 5 days.
3.What payment methods are accepted for BZT52C2V7T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C2V7T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C2V7T-7?
BZT52C2V7T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C2V7T-7 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 BZT52C2V7T-7?
For technical support, including BZT52C2V7T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C2V7T-7 requirements.
6.How does Aetrix verify that BZT52C2V7T-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C2V7T-7 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 BZT52C2V7T-7 meets industry standards.
7.What is the process for return or replacement of BZT52C2V7T-7?
All BZT52C2V7T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C2V7T-7, 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 BZT52C2V7T-7 part is unused and in its original packaging.
Return procedure for BZT52C2V7T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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