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Diodes Incorporated BAW156TQ-7-F
- Part No.:
- BAW156TQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
BAW156TQ-7-F.pdf
- Description:
- DIODE ARRAY GP 85V 215MA SOT-523
- Quantity:
- Payment:
- Shipping:
Inventory:6,795
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Product details
Overview
BAW156TQ-7-F from Diodes Incorporated is an ultra-small surface-mount low-leakage switching diode in SOT523 package, rated for 85 V peak reverse voltage, 215 mA forward current, and exhibiting only 5 nA leakage at 75 V and 25°C. It is AEC-Q101 qualified for automotive applications and features halogen/antimony-free "Green" construction.
For engineers reviewing the BAW156TQ-7-F datasheet, BAW156TQ-7-F pinout, BAW156TQ-7-F application, or BAW156TQ-7-F equivalent, key selection criteria include its ultra-low IR (5 nA @ 75 V), fast tRR (3.0 µs), compact SOT523 footprint, AEC-Q101 qualification, and thermal resistance of 833 °C/W - critical for space-constrained, high-reliability signal routing and protection circuits.
Technical Context
This dual-anode common-cathode configuration diode supports discrete signal steering and polarity protection in low-power analog and digital interfaces. Its 2 pF capacitance at 0 V and 1.0 MHz enables minimal signal distortion in RF-adjacent sensing paths, while the 3.0 µs reverse recovery time ensures clean switching in 1–10 MHz clock or data line clamping.
The device operates across –65°C to +150°C and maintains leakage below 80 nA even at 150°C and 75 V bias - a key enabler for battery-backed sensor nodes and automotive body-control modules where standby power integrity is non-negotiable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 60 V RMS - supports continuous AC signal coupling up to 60 V RMS without breakdown |
| IF | 215 mA - sufficient for LED biasing or logic-level signal conditioning in portable electronics |
| IR @ 75 V, 25°C | 5.0 nA - enables >10-year battery life in always-on IoT sensor front-ends |
| tRR | 3.0 µs - allows reliable operation in 333 kHz switching applications (e.g., sample-and-hold clamp) |
| CT @ 0 V | 2 pF - preserves signal rise/fall times in <100 MHz analog monitoring paths |
| RθJA | 833 °C/W - requires minimal copper area on FR-4 for thermal management in dense layouts |
| TJ Range | –65°C to +150°C - certified for under-hood automotive and industrial control environments |
Pinout & Package
Package: SOT523 - ultra-compact 3-pin plastic surface-mount case (1.60 × 1.60 × 0.75 mm), moisture sensitivity level 1, lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (Pin 1) | First diode anode | Enables independent forward conduction path for dual-signal routing or redundancy |
| Cathode (Pin 2) | Common cathode | Shared return node simplifies PCB layout in OR-ing and level-shifting configurations |
| Anode 2 (Pin 3) | Second diode anode | Permits bidirectional signal isolation or dual-rail protection with single-component footprint |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability (HTOL, TC, UHAST) - eliminates requalification effort for Tier-1 BOMs |
| Ultra-low leakage (5 nA) | Reduces standby current in battery-powered sensors by >95% vs. standard small-signal diodes |
| SOT523 footprint | Occupies 2.56 mm² board area - fits within 0402 passive land patterns for layout reuse |
| Halogen & antimony free | Meets IEC 61249-2-21:2010 requirements for green electronics manufacturing and end-of-life recycling |
| 833 °C/W RθJA | Allows full 150 mW dissipation with only 0.5 cm² of 1-oz copper - no thermal vias required |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Voltage-level translation and ESD protection for LIN bus transceivers in door module ECUs. IC Role / Device Role / Timing Role: Signal-directional clamp and transient suppressor on bidirectional data lines. Use Value: Prevents false wake-up events caused by sub-5 nA leakage drift over temperature and lifetime. | Use Scenario: Isolating analog sensor outputs (e.g., thermistor, RTD) from shared microcontroller ADC inputs. IC Role / Device Role / Timing Role: Low-capacitance signal gate enabling multiplexed sampling without crosstalk. Use Value: 2 pF capacitance avoids >0.1% gain error in 16-bit precision measurement chains. |
| Portable Medical Wearable | Smart Meter Power Monitoring |
Use Scenario: Battery backup path selection and reverse-polarity protection in ECG front-end ASIC supply rails. IC Role / Device Role / Timing Role: Low-leakage OR-ing diode ensuring uninterrupted operation during battery swap. Use Value: 5 nA leakage extends 200 mAh coin-cell life beyond 5 years in always-on mode. | Use Scenario: Voltage divider biasing and transient suppression for shunt-based current sensing in Class 0.5 electricity meters. IC Role / Device Role / Timing Role: Precision DC blocking element in high-impedance metering reference paths. Use Value: Stable 85 V VRWM rating prevents calibration drift under lightning-induced surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-leakage diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV99W-7-F | Higher leakage (100 nA @ 75 V), same SOT-323 package, 100 V VRWM | Less suitable for multi-year battery operation; acceptable for short-cycle industrial logging | Select when higher reverse voltage margin outweighs leakage sensitivity |
| 1N4148W-7-F | Standard leakage (25 nA @ 20 V), larger SOD-123 package, 100 V VRWM, not AEC-Q101 qualified | Not approved for automotive use; requires larger PCB area and higher thermal resistance | Choose only for cost-sensitive consumer designs without automotive or long-life requirements |
Compared with BAV99W-7-F and 1N4148W-7-F, the BAW156TQ-7-F uniquely delivers AEC-Q101 compliance, 5× lower leakage than BAV99W, and 2× smaller footprint than 1N4148W - making it the sole choice for space-constrained, automotive-grade, ultra-low-power signal routing.
Availability
BAW156TQ-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, portable medical wearables, and smart meter power monitoring requiring stable component supply across extended product lifecycles.
Supply support for BAW156TQ-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, energy-efficient components for automotive, industrial, and consumer markets.
The BAW156TQ belongs to Diodes' AEC-Q101-qualified low-leakage diode family, engineered specifically for signal integrity preservation in battery-critical and thermally constrained automotive and IoT edge nodes.
FAQ
What is the polarity marking for BAW156TQ-7-F?
The cathode is marked with a band adjacent to Pin 2 on the top surface of the SOT523 package. The device uses a dual-anode common-cathode configuration: Pin 1 and Pin 3 are anodes, Pin 2 is the shared cathode. Marking code "53" appears beside the cathode band per the datasheet top-view diagram.
Is BAW156TQ-7-F suitable for high-frequency signal routing?
Yes - with 2 pF junction capacitance at 0 V and 3.0 µs reverse recovery time, it supports clean signal routing up to ~10 MHz in clamping, steering, and level-shifting roles. Its low CT minimizes loading on high-impedance sensor outputs, though it is not intended for >50 MHz RF switching.
How does the SOT523 package affect thermal performance?
The SOT523 package delivers RθJA = 833 °C/W on standard FR-4 with recommended pad layout. This allows full 150 mW power dissipation at ambient temperatures up to +70°C without thermal vias. For operation above +70°C, derating per Figure 1 is required - e.g., 75 mW at +100°C ambient.
Does BAW156TQ-7-F support PPAP documentation for automotive programs?
Yes - as an AEC-Q101-qualified part, Diodes Incorporated provides full PPAP support including part submission warrant, design records, process flow diagrams, control plans, and measurement system analysis upon request for qualified automotive customers.
BAW156TQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Anode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 85 V
- Current - Average Rectified (Io) (per Diode):
- 215mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 150 mA
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 3 µs
- Current - Reverse Leakage @ Vr:
- 5 nA @ 75 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BAW156TQ-7-F FAQ
1.How can I place an order for BAW156TQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAW156TQ-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 BAW156TQ-7-F reliable?
The price and inventory of BAW156TQ-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 BAW156TQ-7-F is usually 5 days.
3.What payment methods are accepted for BAW156TQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAW156TQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAW156TQ-7-F?
BAW156TQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAW156TQ-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 BAW156TQ-7-F?
For technical support, including BAW156TQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAW156TQ-7-F requirements.
6.How does Aetrix verify that BAW156TQ-7-F is sourced from the original manufacturer or authorized distributors?
All BAW156TQ-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 BAW156TQ-7-F meets industry standards.
7.What is the process for return or replacement of BAW156TQ-7-F?
All BAW156TQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAW156TQ-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 BAW156TQ-7-F part is unused and in its original packaging.
Return procedure for BAW156TQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAW156TQ-7-F Tags
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BAV99-7-F
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BAV99,215
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