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Diodes Incorporated BZT52C27S-7-F
- Part No.:
- BZT52C27S-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZT52C27S-7-F.pdf
- Description:
- DIODE ZENER 27V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,164
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Product details
Overview
BZT52C27S-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal 27 V zener voltage, 2 mA test current, 80 Ω maximum zener impedance at 1 kHz, 0.5 µA maximum reverse leakage at 21.4 V, and ±5% voltage tolerance. It operates in SOD323 package for precision voltage regulation in low-power analog circuits.
For engineers reviewing the BZT52C27S-7-F datasheet, BZT52C27S-7-F pinout, BZT52C27S-7-F application, or BZT52C27S-7-F equivalent, key selection criteria include zener voltage accuracy, thermal resistance (625 °C/W), power dissipation (200 mW), reverse leakage at rated VR, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode uses planar die construction to ensure stable breakdown characteristics across temperature and lifetime. Its cathode-band polarity and matte tin-plated alloy 42 leadframe support automated assembly and solderability per MIL-STD-202.
The device delivers regulated reference voltage under reverse bias with 18.9 V to 21.4 V voltage range at specified test conditions, and exhibits typical total capacitance below 10 pF at 1 V reverse bias - suitable for noise-sensitive signal conditioning paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V nominal, 25.1–28.9 V range at IZT = 2 mA - defines stable regulation point for feedback networks |
| Power Dissipation (PD) | 200 mW at TA = 25°C - limits continuous current to ~7.4 mA at 27 V without heatsinking |
| Zener Impedance (ZZT) | 80 Ω max at f = 1 kHz - determines AC ripple rejection in shunt regulator applications |
| Reverse Leakage (IR) | 0.1 µA max at VR = 21.4 V - ensures minimal loading on high-impedance reference nodes |
| Thermal Resistance (RθJA) | 625 °C/W - requires careful PCB copper area design to maintain junction temp < 150°C |
| Operating Temp Range | −65°C to +150°C - supports under-hood automotive and industrial ambient environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress-test requirements including HTGB, TCT, and HTRB |
Pinout & Package
Package: SOD323 - ultra-compact 2-pin surface-mount plastic case (1.30 mm × 1.70 mm × 0.90 mm), UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in shunt configuration | Connected to circuit ground or lower-potential node when used as voltage clamp |
| Cathode | Zener breakdown terminal / high-side connection | Marked with band; ties to regulated voltage node or input rail needing overvoltage protection |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ tolerance control and long-term stability under thermal cycling |
| AEC-Q101 qualification | Validates suitability for automotive infotainment, body control, and ADAS sensor interfaces |
| SOD323 footprint | Reduces board space by >50% vs. DO-35; compatible with standard 0201 reflow profiles |
| Lead-free & halogen-free | Meets RoHS 2 and JEDEC J-STD-020 Level 1 - eliminates post-solder cleaning and enables green manufacturing |
Applications
| Automotive Sensor Signal Conditioning | Industrial PLC Input Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for analog front-end of wheel speed or pressure sensors in engine bay. IC Role / Device Role / Timing Role: Shunt voltage regulator providing 27 V clamp to protect ADC input stages from load dump transients. Use Value: Maintains <0.1 µA leakage at 21.4 V, minimizing error in high-impedance sensor bias networks. | Use Scenario: Overvoltage clamping on 24 V DC digital input modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Standby protection element that activates only during >25.1 V excursions, diverting surge current away from optocoupler inputs. Use Value: 200 mW power rating sustains 100 ms transients per IEC 61000-4-5 Level 3 without degradation. |
| Medical Instrument Power Monitoring | Consumer IoT Battery Voltage Reference |
Use Scenario: Providing stable threshold for battery undervoltage lockout in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision voltage reference in comparator-based monitoring circuit with 27 V trip point. Use Value: ±5% VZ tolerance and −65°C to +150°C operation ensure consistent trip behavior across clinical environments. | Use Scenario: Low-current voltage reference for lithium-ion cell voltage scaling in smart home sensors. IC Role / Device Role / Timing Role: Passive scaling element in resistive divider feeding MCU ADC, leveraging tight 25.1–28.9 V window. Use Value: 80 Ω zener impedance minimizes measurement drift caused by supply ripple in battery-powered operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5256ET1G | 27 V nominal, 200 mW, SOD-123 package, 100 Ω ZZT, no AEC-Q101 qualification | Lacks automotive qualification; higher zener impedance reduces AC regulation fidelity | Select when cost sensitivity outweighs automotive compliance or high-frequency stability needs |
| BZX384-C27 | 27 V nominal, 300 mW, SOT-23 package, 90 Ω ZZT, AEC-Q101 qualified | Larger footprint and higher power enable longer surge handling but require more PCB area | Prefer for designs needing >200 mW transient absorption or compatibility with existing SOT-23 layouts |
Compared with MMSZ5256ET1G and BZX384-C27, BZT52C27S-7-F offers the smallest footprint (SOD323), lowest leakage (0.1 µA), and verified AEC-Q101 compliance - making it optimal for space-constrained automotive and industrial sensor nodes where thermal and size constraints dominate.
Availability
BZT52C27S-7-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC input protection, and medical instrument power monitoring requiring stable component supply and full traceability.
Supply support for BZT52C27S-7-F 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 BZT52C series belongs to Diodes' high-reliability Zener diode product line, engineered specifically for precision voltage regulation and overvoltage protection in automotive, industrial, and medical applications demanding AEC-Q101 validation and green material compliance.
FAQ
What is the maximum reverse voltage (VR) at which leakage current is guaranteed?
The datasheet specifies 0.1 µA maximum reverse current at VR = 21.4 V - this is the rated test voltage corresponding to 80% of nominal VZ. At VR = 27 V, leakage rises nonlinearly and is not guaranteed; operation above 21.4 V should assume increasing conduction toward full zener breakdown.
Can BZT52C27S-7-F be used in series for higher voltage regulation?
No - series connection of Zener diodes introduces mismatch-induced voltage imbalance due to process variation in VZ tolerance (±5%) and dynamic impedance. For >27 V regulation, use a single higher-voltage Zener (e.g., BZT52C33S) or a dedicated programmable shunt regulator IC.
Is the SOD323 package compatible with standard 0201 pick-and-place equipment?
Yes - the SOD323 (1.3 mm × 1.7 mm) falls within the mechanical and vacuum nozzle specifications of most Class III 0201-capable placement systems. Its matte tin finish and coplanar terminals ensure reliable pickup and placement yield at ≥99.95% under IPC-A-610 Class 2 conditions.
Does the "-7-F" suffix indicate tape-and-reel packaging and lead-free plating?
Yes - "-7-F" denotes 3,000-unit tape-and-reel packaging with fully lead-free, halogen-free, and antimony-free construction per Diodes Incorporated's Green policy. The "F" explicitly confirms RoHS 2 compliance and J-STD-020 Level 1 moisture sensitivity rating.
BZT52C27S-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±7%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 18.9 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-323
BZT52C27S-7-F FAQ
1.How can I place an order for BZT52C27S-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C27S-7-F 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 BZT52C27S-7-F reliable?
The price and inventory of BZT52C27S-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C27S-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C27S-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C27S-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C27S-7-F?
BZT52C27S-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C27S-7-F 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 BZT52C27S-7-F?
For technical support, including BZT52C27S-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C27S-7-F requirements.
6.How does Aetrix verify that BZT52C27S-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C27S-7-F 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 BZT52C27S-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C27S-7-F?
All BZT52C27S-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C27S-7-F, 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 BZT52C27S-7-F part is unused and in its original packaging.
Return procedure for BZT52C27S-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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