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Taiwan Semiconductor Corporation BZD17C75PH
- Part No.:
- BZD17C75PH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZD17C75PH.pdf
- Description:
- DIODE ZENER 75V 1W SUB SMA
- Quantity:
- Payment:
- Shipping:
Inventory:2,301
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Product details
Overview
BZD17C75PH from Taiwan Semiconductor is a single-die, AEC-Q101-qualified silicon Zener diode in Sub SMA package, with nominal Zener voltage 75 V (min 70 V, max 79 V), 30 Ω dynamic resistance at 10 mA test current, ±0.08 %/°C temperature coefficient, and 0.8 W steady-state power dissipation at 25°C ambient - used for precision voltage regulation in automotive ECUs.
For engineers reviewing the BZD17C75PH datasheet, BZD17C75PH pinout, BZD17C75PH application, or BZD17C75PH equivalent, key selection criteria include Zener voltage tolerance, differential resistance at specified IZT, thermal resistance (RθJA = 180 °C/W), surge capability (300 W non-repetitive pulse), and AEC-Q101 qualification status.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its low leakage current (<1.0 μA at 56 V) and tight voltage tolerance (±6.7% at 75 V) support high-accuracy analog sensing and feedback loops.
The Sub SMA package enables surface-mount assembly with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Thermal performance is defined for 5 mm × 5 mm Cu pad mounting, delivering RθJL = 30 °C/W and RθJA = 180 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 70–79 V at IZT = 10 mA - defines regulated output range for voltage reference circuits |
| Differential Resistance rdiff | 30 Ω max at IZ = 10 mA - determines output impedance and load regulation error |
| Temperature Coefficient αZ | ±0.08 %/°C - ensures <±0.6 V drift over –40°C to +125°C junction range |
| 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 for 100 μs pulse - enables transient overvoltage clamping without failure |
| Junction Temp Range TJ | –55°C to +175°C - supports operation in under-hood automotive environments |
Pinout & Package
Sub SMA package: surface-mount, cathode-indicated by band, matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), weight ≈ 0.019 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulation topology |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to input rail; maintains regulated voltage between cathode and anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Low leakage current | <1.0 μA at 56 V reverse bias - minimizes standby power loss in battery-critical systems |
| Stable Zener voltage tolerance | ±6.7% (70–79 V) - reduces need for post-regulation trimming in production |
| Moisture sensitivity level 1 | No bake requirement before reflow - simplifies SMT line integration and reduces process risk |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Stabilizing 5 V or 12 V reference rails feeding ADCs and op-amps in engine management systems. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precise, temperature-stable bias for sensor signal conditioning. Use Value: Maintains ±0.5% reference accuracy across –40°C to +125°C ambient due to low αZ and AEC-Q101 thermal robustness. | Use Scenario: Clamping transient surges on 24 V fieldbus inputs exposed to inductive switching noise. IC Role / Device Role / Timing Role: Overvoltage protection device absorbing 300 W pulses without degradation. Use Value: Prevents damage to downstream isolators and ADC front-ends using non-repetitive 100 μs surge rating. |
| Medical Infusion Pump Power Supply | Telecom Base Station Bias Circuit |
Use Scenario: Generating stable 75 V bias for high-voltage op-amp stages in precision fluid flow control. IC Role / Device Role / Timing Role: Precision Zener reference establishing fixed gain-setting node in analog feedback loop. Use Value: Delivers <30 Ω dynamic impedance at 10 mA, minimizing gain drift under load variation. | Use Scenario: Regulating auxiliary 75 V supply for RF amplifier biasing in outdoor macrocell units. IC Role / Device Role / Timing Role: Primary voltage reference in isolated DC-DC converter feedback path. Use Value: Ensures long-term stability (excellent aging behavior per spec) and low leakage (<1 μA) for low-power standby modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STZ75A | 75 V nominal, 1.3 W Ptot, DO-214AC package, no AEC-Q101 claim | Higher power but larger footprint; not qualified for automotive use | Prefer for industrial power supplies where space allows and qualification is not required |
| 1N4744A | 14 V nominal, 1 W Ptot, DO-41 through-hole; incompatible voltage rating | Not a voltage-equivalent replacement; requires redesign of reference network | Only suitable if system redesign accommodates 14 V reference and through-hole assembly |
Compared with STZ75A and 1N4744A, the BZD17C75PH offers automotive-grade reliability in a compact Sub SMA package with tighter voltage tolerance and lower thermal resistance - making it optimal for space-constrained, high-reliability shunt regulation where 75 V reference stability is critical.
Availability
BZD17C75PH is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog modules, and telecom base station bias circuits requiring stable component supply with full traceability and long-lifecycle support.
Supply support for BZD17C75PH 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, and Zener regulators for automotive and industrial markets.
The BZD17CxxPH series targets high-reliability voltage reference and protection applications, designed specifically to meet AEC-Q101 stress requirements while maintaining tight parametric control across wide temperature ranges.
FAQ
What is the Zener voltage tolerance of BZD17C75PH at 25°C?
The BZD17C75PH has a Zener voltage range of 70 V to 79 V at IZT = 10 mA and TA = 25°C, corresponding to ±6.7% tolerance around the nominal 75 V rating. This is confirmed in the Electrical Specifications table on page 2 of the official Taiwan Semiconductor datasheet revision A2103.
Is BZD17C75PH qualified for automotive applications?
Yes, BZD17C75PH is explicitly AEC-Q101 qualified per the manufacturer's documentation. It undergoes stress testing including high-temperature reverse bias, temperature cycling, and mechanical shock - making it suitable for under-hood and safety-critical automotive subsystems.
What is the maximum non-repetitive surge power rating for BZD17C75PH?
The BZD17C75PH supports up to 300 W of non-repetitive peak pulse power for 100 μs square-wave pulses at TJ = 25°C, as specified in the Absolute Maximum Ratings table. This enables effective transient voltage suppression without device failure.
Does BZD17C75PH have a halogen-free construction?
Yes, BZD17C75PH complies with IEC 61249-2-21 for halogen-free materials. The molding compound contains no brominated or chlorinated flame retardants, supporting environmental compliance in RoHS-regulated designs.
What is the thermal resistance from junction to ambient for BZD17C75PH?
The junction-to-ambient thermal resistance (RθJA) of BZD17C75PH is 180 °C/W when mounted on a 5 mm × 5 mm copper pad, as stated in the Thermal Performance section. This value is critical for calculating maximum allowable power dissipation at elevated ambient temperatures.
BZD17C75PH 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:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 56 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
BZD17C75PH FAQ
1.How can I place an order for BZD17C75PH through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD17C75PH 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 BZD17C75PH reliable?
The price and inventory of BZD17C75PH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD17C75PH is usually 5 days.
3.What payment methods are accepted for BZD17C75PH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD17C75PH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD17C75PH?
BZD17C75PH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD17C75PH 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 BZD17C75PH?
For technical support, including BZD17C75PH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD17C75PH requirements.
6.How does Aetrix verify that BZD17C75PH is sourced from the original manufacturer or authorized distributors?
All BZD17C75PH 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 BZD17C75PH meets industry standards.
7.What is the process for return or replacement of BZD17C75PH?
All BZD17C75PH units undergo pre-shipment inspection (PSI). If there is an issue with BZD17C75PH, 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 BZD17C75PH part is unused and in its original packaging.
Return procedure for BZD17C75PH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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