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Taiwan Semiconductor Corporation BZD17C75P
- Part No.:
- BZD17C75P
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZD17C75P.pdf
- Description:
- DIODE ZENER 75V 800MW SUB SMA
- Quantity:
- Payment:
- Shipping:
Inventory:5,458
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Product details
Overview
BZD17C75P from Taiwan Semiconductor is a surface-mount silicon Zener diode rated for 0.8 W power dissipation, with a nominal Zener voltage of 75 V (min 70 V, max 79 V) at 10 mA test current, differential resistance ≤100 Ω, and temperature coefficient of +0.08%/°C - used for precision voltage regulation and overvoltage protection in DC power rails.
For engineers reviewing the BZD17C75P datasheet, BZD17C75P pinout, BZD17C75P application, or BZD17C75P equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance at operating current, thermal resistance (RθJA = 180 °C/W), surge capability (300 W non-repetitive pulse), and Sub SMA package compatibility with automated SMT assembly.
Technical Context
The BZD17C75P operates as a single-die, unidirectional Zener diode in avalanche breakdown mode above 70 V, with specified reverse leakage ≤1.0 μA at 56 V and forward voltage of 1.2 V at 0.2 A. Its junction-to-ambient thermal resistance is 180 °C/W on a 5 mm × 5 mm copper pad, supporting stable operation up to TJ = 175 °C.
Designed for low-profile PCB layouts, it features matte tin-plated leads compliant with J-STD-002 solderability, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1 per J-STD-020 - eliminating bake requirements prior to reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 70–79 V at IZT = 10 mA - defines regulated output voltage range under nominal bias |
| Differential Resistance rdiff | ≤100 Ω - determines load regulation error and output impedance in shunt regulator designs |
| Power Dissipation Ptot | 0.8 W at TA = 25°C - sets maximum continuous DC power handling on standard PCB pad |
| Surge Power PZSM | 300 W (100 μs pulse) - enables transient overvoltage clamping without failure |
| Temp Coefficient αZ | +0.08%/°C - quantifies Zener voltage drift with temperature in precision reference applications |
| Junction Temp Range | −55°C to +175°C - supports operation in automotive under-hood and industrial control environments |
| Package | Sub SMA - 2.8 mm × 1.8 mm footprint, cathode band polarity marking, RoHS/halogen-free |
Pinout & Package
Sub SMA package: 2-terminal surface-mount device with anode and cathode leads; cathode identified by molded band. Dimensions: 2.8 mm × 1.8 mm × 1.3 mm (L × W × H); weight ≈ 0.019 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential node in regulation/protective circuits; forward VF = 1.2 V @ 0.2 A |
| Cathode | Current exit terminal in forward bias; Zener breakdown terminal in reverse bias | Connected to higher-potential node; clamps voltage when reverse voltage exceeds 70 V |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile Sub SMA package | Enables high-density PCB layouts with 2.8 mm × 1.8 mm footprint and 1.3 mm height |
| Stable Zener voltage tolerance | ±6.7% (70–79 V) ensures predictable clamping threshold across production lots |
| Low leakage current | ≤1.0 μA @ 56 V minimizes standby power loss in battery-backed or energy-sensitive systems |
| High surge robustness | 300 W peak pulse rating (100 μs) provides reliable transient suppression without derating |
| Moisture sensitivity level 1 | Eliminates pre-reflow baking, reducing manufacturing cost and process complexity |
Applications
| Voltage Reference for ADC/DAC Circuits | DC Power Rail Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 75 V reference to high-voltage analog front-ends in industrial data acquisition systems. IC Role / Device Role / Timing Role: Shunt reference diode establishing precise bias point for op-amp input stages or DAC feedback networks. Use Value: Tight 70–79 V tolerance and +0.08%/°C tempco enable <±0.5% reference stability over −40°C to +85°C ambient. | Use Scenario: Protecting 60 V DC bus in telecom power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Passive overvoltage clamp diverting transient energy to ground before downstream converters are damaged. Use Value: 300 W non-repetitive pulse rating absorbs 100 μs transients while maintaining <1.2 V forward drop during recovery. |
| LED String Current Regulation | Microcontroller I/O Protection |
Use Scenario: Stabilizing bias voltage for constant-current LED drivers in signage and architectural lighting. IC Role / Device Role / Timing Role: Zener shunt element setting reference voltage for current-sense amplifier thresholds. Use Value: 0.8 W continuous rating supports sustained operation at 10 mA, enabling compact thermal design without heatsinking. | Use Scenario: Safeguarding 3.3 V or 5 V microcontroller GPIO pins against ESD and inductive kickback. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) clamping diode connected between I/O line and VCC/GND rails. Use Value: Sub SMA package allows placement within 2 mm of protected pin, minimizing inductance and improving ESD response time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STZ75A-TR | Zener voltage 75 V ±5%, Ptot = 1.3 W, DO-214AC package (SMA), RθJA = 125 °C/W | Higher power rating enables higher continuous current but requires larger pad area | Preferred where >0.8 W steady-state dissipation is needed; not drop-in due to SMA vs. Sub SMA footprint |
| MMBZ5265BLT1G | Zener voltage 75 V ±5%, Ptot = 0.35 W, SOT-23 package, rdiff = 130 Ω | Lower power and higher impedance limit use to low-current references only | Suitable for space-constrained logic-level protection; insufficient for 10 mA regulation loads |
Compared with STZ75A-TR and MMBZ5265BLT1G, the BZD17C75P delivers optimal balance of 0.8 W power handling, 100 Ω dynamic impedance, and Sub SMA footprint - making it ideal for mid-power industrial voltage regulation where thermal and layout constraints are critical.
Availability
BZD17C75P is available at Aetrix Electronics and suitable for industrial power supplies, telecom DC-DC modules, and automotive body control units requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD17C75P 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, rectifiers, Zener diodes, and TVS components for industrial and automotive markets.
The BZD17C75P belongs to the BZD17C series of low-profile Zener diodes engineered for high-reliability voltage regulation and transient protection in space-constrained, thermally demanding applications.
FAQ
What is the Zener voltage tolerance of BZD17C75P?
The BZD17C75P has a Zener voltage range of 70 V to 79 V at IZT = 10 mA, corresponding to a ±6.7% tolerance around the nominal 75 V rating. This tolerance is verified per Taiwan Semiconductor's L2103 specification sheet and applies across the full operating temperature range of −55°C to +175°C without derating.
Can BZD17C75P be used in place of a 75 V Zener in a 12 V automotive circuit?
No - the BZD17C75P is rated for 75 V Zener breakdown and is unsuitable for 12 V circuits. Using it as a clamp or reference in a 12 V system would result in no conduction under normal conditions and potential failure during transients exceeding its rating. Select BZD17C12P or equivalent for 12 V applications.
What is the maximum continuous reverse current BZD17C75P can handle at 75 V?
The BZD17C75P does not specify a maximum continuous reverse current at exactly 75 V. Its rated test current is 10 mA, and maximum power dissipation is 0.8 W at 25°C ambient. At 75 V, this corresponds to ~10.7 mA continuous current (0.8 W ÷ 75 V), assuming no thermal derating - actual usable current depends on PCB copper area and ambient temperature.
Does BZD17C75P meet automotive AEC-Q200 stress testing requirements?
No - the BZD17C75P is not AEC-Q200 qualified. Taiwan Semiconductor's documentation specifies compliance with JESD201 Class 2 whisker testing and J-STD-020 moisture sensitivity level 1, but no AEC-Q200 qualification is stated. For automotive-grade Zener diodes, consult TSC's AEC-Q200-certified product lines or alternative manufacturers' qualified parts.
What is the cathode marking convention for BZD17C75P?
The cathode of the BZD17C75P is marked by a visible molded band on the Sub SMA package body. The marking code "L2" appears adjacent to the band, confirming the 75 V variant. Polarity must be verified visually during placement, as incorrect orientation prevents proper Zener operation and may cause open-circuit failure.
BZD17C75P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Voltage - Zener (Nom) (Vz):
- 75 V
- Tolerance:
- ±6.04%
- Power - Max:
- 800 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 56 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
BZD17C75P FAQ
1.How can I place an order for BZD17C75P through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD17C75P 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 BZD17C75P reliable?
The price and inventory of BZD17C75P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD17C75P is usually 5 days.
3.What payment methods are accepted for BZD17C75P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD17C75P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD17C75P?
BZD17C75P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD17C75P 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 BZD17C75P?
For technical support, including BZD17C75P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD17C75P requirements.
6.How does Aetrix verify that BZD17C75P is sourced from the original manufacturer or authorized distributors?
All BZD17C75P 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 BZD17C75P meets industry standards.
7.What is the process for return or replacement of BZD17C75P?
All BZD17C75P units undergo pre-shipment inspection (PSI). If there is an issue with BZD17C75P, 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 BZD17C75P part is unused and in its original packaging.
Return procedure for BZD17C75P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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