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Diodes Incorporated BZX84C33TS-7-F
- Part No.:
- BZX84C33TS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BZX84C33TS-7-F.pdf
- Description:
- DIODE ZENER ARRAY 33V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:2,371
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Product details
Overview
BZX84C33TS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array with three isolated 33 V ±3% Zener elements in a single SOT-363 package, rated for 200 mW total power dissipation and 80 Ω maximum Zener impedance at 2 mA, used for precision voltage regulation and overvoltage protection in compact power management circuits.
For engineers reviewing the BZX84C33TS-7-F datasheet, BZX84C33TS-7-F pinout, BZX84C33TS-7-F application, or BZX84C33TS-7-F equivalent, key selection criteria include nominal Zener voltage (33.0 V), tolerance (±3%), Zener test current (2 mA), maximum reverse leakage (0.1 µA @ 23.1 V), and thermal resistance (625 °C/W) in ultra-small SOT-363 packaging.
Technical Context
This device integrates three independent Zener diodes sharing no internal connection-each operates as a discrete shunt regulator with identical 33 V nominal breakdown voltage. The array enables space-constrained designs requiring multiple regulated reference points without board-level duplication.
It uses silicon planar epitaxial construction with controlled avalanche breakdown, delivering stable regulation across -65°C to +150°C ambient range. Its low 0.1 µA reverse leakage at 23.1 V and temperature coefficient of +27.4 mV/°C (typ.) support predictable performance in battery-backed and industrial sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 33.0 V - precise shunt regulation point at 2 mA test current |
| Zener Voltage Range | 31.0–35.0 V - ±3% tolerance ensures predictable clamping window |
| Max Zener Impedance | 80 Ω @ 2 mA - low dynamic resistance maintains regulation under load transients |
| Power Dissipation | 200 mW - limits thermal rise on FR4 PCB with recommended pad layout |
| Reverse Leakage Current | 0.1 µA @ 23.1 V - minimal standby power loss in always-on circuits |
| Thermal Resistance | 625 °C/W - defines junction-to-ambient temperature rise per watt dissipated |
| Operating Temperature | -65°C to +150°C - supports automotive under-hood and industrial control environments |
Pinout & Package
Package: SOT-363 - ultra-small surface-mount plastic case (2.2 × 1.3 × 0.9 mm), UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | First Zener element anode - connects to cathode of external series resistor for regulation |
| A2 | Anode 2 | Second Zener element anode - electrically isolated, enables dual-rail reference generation |
| A3 | Anode 3 | Third Zener element anode - fully independent; allows triple-voltage monitoring or redundancy |
| C1 | Cathode 1 | First Zener element cathode - tied to regulated node; reverse-biased during operation |
| C2 | Cathode 2 | Second Zener element cathode - no internal connection to C1 or C3 |
| C3 | Cathode 3 | Third Zener element cathode - enables three independent clamping paths on one footprint |
Key Features
| Feature | Design Value |
|---|---|
| Triple isolated Zener elements | Three independent 33 V regulators in one SOT-363 footprint - reduces PCB area by ~67% vs. discrete diodes |
| Low reverse leakage | 0.1 µA max at 23.1 V - preserves battery life in portable and IoT edge nodes |
| Stable temperature coefficient | +27.4 mV/°C - enables predictable drift compensation in temperature-critical references |
| Lead-free & RoHS-compliant | Matte tin-plated Alloy 42 leadframe - meets global environmental compliance without solderability trade-offs |
| Moisture sensitivity Level 1 | No bake required before reflow - simplifies manufacturing for high-volume SMT lines |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Protecting analog front-end inputs of 24-bit ADCs in PLC I/O modules from ESD and supply rail overshoot. IC Role / Device Role / Timing Role: Shunt clamp regulating reference voltage and absorbing transient energy before it reaches sensitive amplifier inputs. Use Value: 33 V breakdown matches 24 V industrial bus margin; triple isolation allows simultaneous protection of VREF, AVDD, and signal return paths. | Use Scenario: Clamping auxiliary power rails (VCONN, VBUS monitoring) in USB-C receptacles against hot-plug surges. IC Role / Device Role / Timing Role: Fast-response overvoltage suppressor placed directly at connector pins to limit voltage spikes below IC absolute maximum ratings. Use Value: 80 Ω Zener impedance ensures sub-100 ns response to 1 kV ESD events; SOT-363 fits tight connector keep-out zones. |
| Automotive Body Control Module | Medical Wearable Battery Monitor |
Use Scenario: Stabilizing microcontroller reset threshold and CAN transceiver bias rails in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Dual-rail Zener reference generator providing clean 33 V and local ground-referenced 33 V for separate logic and analog domains. Use Value: -65°C to +150°C rating supports engine bay mounting; triple isolation prevents fault propagation between safety-critical domains. | Use Scenario: Regulating reference voltage for coulomb counter ICs monitoring Li-ion cell voltage in patch-style monitors. IC Role / Device Role / Timing Role: Low-leakage shunt regulator establishing stable 33 V reference for ADC full-scale calibration. Use Value: 0.1 µA reverse leakage extends 7-day wearable runtime; SOT-363 footprint aligns with 0201 passive placement workflows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5265BS-7-F | Single 33 V Zener in SOT-363; same 200 mW rating but only one element | Requires three devices for equivalent functionality; increases component count and layout area | Select when only one regulated rail is needed or when redundancy is not required |
| BZX84C33LT1G | Single 33 V Zener in SOT-23; lower thermal resistance (500 °C/W) but no multi-element integration | Lacks triple-isolation capability; unsuitable for multi-rail clamping on shared footprint | Prefer for cost-sensitive single-rail designs where board space is less constrained than part count |
Compared with MMBZ5265BS-7-F and BZX84C33LT1G, BZX84C33TS-7-F uniquely delivers three independent 33 V regulation paths in one SOT-363 - reducing bill-of-materials, assembly steps, and PCB real estate while maintaining identical electrical specs per element.
Availability
BZX84C33TS-7-F is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery clamp circuits, automotive body control modules, and medical wearable battery monitors requiring stable component supply and long-term manufacturability.
Supply support for BZX84C33TS-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, specializing in high-reliability, high-efficiency components for power management, signal integrity, and protection applications.
The BZX84C series belongs to Diodes' precision Zener diode portfolio, engineered specifically for space-constrained voltage regulation and overvoltage protection in automotive, industrial, and consumer electronics where reliability and repeatability are critical.
FAQ
What is the Zener test current for BZX84C33TS-7-F?
The Zener test current is 2 mA, as specified in the Electrical Characteristics table. This current establishes the nominal 33.0 V breakdown voltage under standard test conditions at 25°C ambient. Operation at this current ensures measurement consistency and aligns with the device's 80 Ω maximum Zener impedance specification.
Can BZX84C33TS-7-F be used in place of a single 33 V Zener diode?
Yes - any one of its three isolated Zener elements (e.g., A1/C1 pair) functions identically to a discrete 33 V Zener diode with matching electrical specs. However, using only one element wastes two others; it is most valuable when multiple regulated rails or redundant clamping paths are required within the same footprint.
What is the maximum reverse voltage before breakdown?
The guaranteed minimum Zener voltage is 31.0 V, meaning breakdown begins no earlier than this value at 2 mA. Below 31.0 V, reverse leakage remains ≤0.1 µA at 23.1 V - confirming stable non-conduction up to the specified knee region. Full conduction occurs across the 31.0–35.0 V range depending on unit variation and temperature.
Is the SOT-363 package compatible with standard reflow profiles?
Yes - the SOT-363 package is rated for moisture sensitivity level 1 per J-STD-020D, meaning it can be stored indefinitely at ≤30°C/60% RH without baking. It supports standard lead-free reflow profiles (peak 260°C) with matte tin plating ensuring reliable wetting and intermetallic formation on FR4 PCBs.
BZX84C33TS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Configuration:
- 3 Independent
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 23.1 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:
- SOT-363
BZX84C33TS-7-F FAQ
1.How can I place an order for BZX84C33TS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C33TS-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 BZX84C33TS-7-F reliable?
The price and inventory of BZX84C33TS-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 BZX84C33TS-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C33TS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C33TS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C33TS-7-F?
BZX84C33TS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C33TS-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 BZX84C33TS-7-F?
For technical support, including BZX84C33TS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C33TS-7-F requirements.
6.How does Aetrix verify that BZX84C33TS-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C33TS-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 BZX84C33TS-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C33TS-7-F?
All BZX84C33TS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C33TS-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 BZX84C33TS-7-F part is unused and in its original packaging.
Return procedure for BZX84C33TS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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Diodes Incorporated
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