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Diodes Incorporated BZT52HC36WF-7
- Part No.:
- BZT52HC36WF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC36WF-7.pdf
- Description:
- DIODE ZENER 36V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BZT52HC36WF-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 36 V, ±5.6% tolerance (34.0–38.0 V), 2 mA test current, 60 Ω maximum zener impedance at 2 mA, and 0.05 µA maximum reverse leakage at 25.2 V. It operates in SOD123F package and serves as a precision voltage reference or overvoltage clamp in low-power analog monitoring circuits.
For engineers reviewing the BZT52HC36WF-7 datasheet, BZT52HC36WF-7 pinout, BZT52HC36WF-7 application, or BZT52HC36WF-7 equivalent, key selection criteria include zener voltage stability across temperature (TC = +30.4 mV/°C), low capacitance (45 pF @ 1 MHz), AEC-Q101 qualification for automotive use, and thermal resistance of 150 °C/W on 1 cm² cathode pad.
Technical Context
This Zener diode employs a planar silicon junction optimized for stable reverse-breakdown behavior under controlled test conditions (IZ = 2 mA). Its positive temperature coefficient (+30.4 mV/°C) enables predictable drift compensation in bias networks and improves thermal tracking in multi-diode references.
The SOD123F package features a flat lead design with matte tin–annealed copper alloy leads, UL 94V-0 molding compound, and J-STD-020 Level 1 moisture sensitivity-enabling compatibility with standard reflow profiles while maintaining 830 mW power dissipation capability when mounted on a 1 cm² thermal pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34.0–38.0 V @ IZ = 2 mA - defines clamping threshold for overvoltage protection in 3.3 V/5 V rail supervision |
| Zener Impedance (ZZT) | 60 Ω max @ 2 mA - ensures minimal voltage shift under dynamic load transients in feedback loops |
| Reverse Leakage (IR) | 0.05 µA @ VR = 25.2 V - enables ultra-low standby current in battery-backed voltage monitors |
| Capacitance (CT) | 45 pF @ 1 MHz, VR = 0 V - supports high-frequency noise filtering without signal distortion in sensor interfaces |
| Power Dissipation (PD) | 830 mW @ TA = 25°C with 1 cm² cathode pad - allows sustained operation in compact automotive ECUs without forced cooling |
| Temperature Coefficient (TC) | +30.4 mV/°C @ IZ = 2 mA - provides known, linear drift for temperature-compensated reference designs |
| Thermal Resistance (RθJA) | 150 °C/W with optimized pad - enables accurate junction temperature estimation for reliability modeling |
Pinout & Package
Package: SOD123F (Type B), surface-mount, flat-lead plastic case with cathode band marking. Dimensions: 1.80 mm × 2.70 mm × 1.15 mm (L × W × H); weight ≈ 0.015 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias configuration; forms reference ground return path |
| Cathode | Zener breakdown terminal / voltage regulation node | Marked by band; connects to regulated voltage rail; carries full zener current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per stress test requirements |
| Green compound (halogen/antimony-free) | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies strict environmental compliance for Tier-1 automotive supply chains |
| Low-profile SOD123F package | 1.15 mm height enables placement beneath connectors or in space-constrained ADAS modules |
| Matte tin–annealed leads | Solderable per MIL-STD-202 Method 208 - ensures robust intermetallic formation and long-term joint integrity in reflow assembly |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping on LIN bus transceiver supply lines exposed to load-dump transients up to 40 V. IC Role / Device Role / Timing Role: Zener clamp protecting 3.3 V LDO input against >36 V surges. Use Value: Prevents LDO damage while maintaining <0.05 µA leakage to avoid battery drain in sleep mode. | Use Scenario: Precision reference for 16-bit ADC in RTD temperature measurement front-end. IC Role / Device Role / Timing Role: Stable 36 V reference source for ratiometric excitation current generation. Use Value: +30.4 mV/°C TC enables predictable offset correction in firmware calibration routines. |
| Consumer Power Adapter Feedback Loop | Medical Portable Device Battery Monitor |
Use Scenario: Secondary-side voltage sensing in flyback converter with optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference setting TL431 cathode voltage threshold. Use Value: 60 Ω impedance minimizes regulation error under varying optocoupler CTR degradation. | Use Scenario: Overvoltage detection on lithium-ion pack monitor IC input (max 38 V). IC Role / Device Role / Timing Role: Clamp preventing false fault triggering during charge termination spikes. Use Value: 45 pF capacitance avoids high-frequency coupling into sensitive analog monitor inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5241B-7-F | Zener voltage 36 V ±5%, but 200 Ω ZZT @ 12.5 mA - higher impedance reduces regulation accuracy under load | Rated for 500 mW only; unsuitable for 830 mW thermal pad layouts | Select only if board layout lacks 1 cm² cathode pad and power dissipation remains ≤500 mW |
| BZX84-C36 | SOT-23 package (higher RθJA = 300 °C/W); 36 V ±5%, 150 Ω ZZT @ 5 mA | No AEC-Q101 qualification; not approved for automotive under-hood use | Acceptable for consumer-grade PCBs where space constraints prohibit SOD123F footprint |
Compared with MMSZ5241B-7-F and BZX84-C36, BZT52HC36WF-7 delivers superior thermal performance (150 °C/W), lower dynamic impedance (60 Ω), and automotive qualification-making it the preferred choice for thermally demanding, safety-critical voltage reference roles.
Availability
BZT52HC36WF-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, consumer power adapter feedback loops, and medical portable device battery monitors requiring stable component supply and AEC-Q101 compliance.
Supply support for BZT52HC36WF-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 BZT52HC series belongs to Diodes' AEC-Q101-qualified Zener diode product line, engineered specifically for automotive and industrial applications requiring high-reliability voltage regulation and transient suppression in compact surface-mount formats.
FAQ
What is the maximum power dissipation of BZT52HC36WF-7 under standard PCB mounting?
BZT52HC36WF-7 achieves 830 mW maximum power dissipation when mounted on an FR-4 PCB with a 1 cm² copper pad connected to the cathode terminal. This requires adherence to Diodes' suggested pad layout (Document DS36891, Page 4) and assumes ambient temperature ≤25°C. Derating applies above 25°C per Figure 1's power derating curve.
Does BZT52HC36WF-7 have polarity marking, and how is it identified?
Yes, BZT52HC36WF-7 uses a cathode band marking on the SOD123F package body. The band indicates the cathode terminal, which must be connected to the higher-potential side of the circuit during reverse-bias (zener) operation. The anode is the unmarked end. Polarity is confirmed in the mechanical drawings on page 4 of DS36891 Rev. 4-2.
Is BZT52HC36WF-7 compatible with lead-free reflow soldering processes?
Yes, BZT52HC36WF-7 is fully RoHS-compliant and rated for lead-free reflow soldering per JEDEC J-STD-020. Its matte tin–annealed copper alloy leads meet MIL-STD-202 Method 208 solderability requirements and withstand peak temperatures up to 260°C for ≤60 seconds, consistent with industry-standard Pb-free profiles.
How does the +30.4 mV/°C temperature coefficient affect circuit design?
The +30.4 mV/°C coefficient means the zener voltage increases linearly with junction temperature at that rate. In precision references, this drift must be compensated-e.g., by pairing with a negative-TC component or using software-based temperature correction. It is beneficial in temperature-sensing bias networks where predictable, monotonic drift is required.
BZT52HC36WF-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5.56%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52HC36WF-7 FAQ
1.How can I place an order for BZT52HC36WF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC36WF-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 BZT52HC36WF-7 reliable?
The price and inventory of BZT52HC36WF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC36WF-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC36WF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC36WF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC36WF-7?
BZT52HC36WF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC36WF-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 BZT52HC36WF-7?
For technical support, including BZT52HC36WF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC36WF-7 requirements.
6.How does Aetrix verify that BZT52HC36WF-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC36WF-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 BZT52HC36WF-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC36WF-7?
All BZT52HC36WF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC36WF-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 BZT52HC36WF-7 part is unused and in its original packaging.
Return procedure for BZT52HC36WF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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