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Taiwan Semiconductor Corporation SMBJ5.0AH
- Part No.:
- SMBJ5.0AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0AH.pdf
- Description:
- 600W, 6.7V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,215
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Product details
Overview
SMBJ5.0AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for automotive-grade ESD and surge protection. It features a 5.0 V working stand-off voltage (VWM), 6.4–7.0 V breakdown voltage (VBR) at 10 mA, 9.2 V maximum clamping voltage (VC) at 800 A peak pulse current, and 600 W peak pulse power rating per 10/1000 µs waveform - ideal for protecting automotive lighting control modules against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ5.0AH datasheet, SMBJ5.0AH pinout, SMBJ5.0AH application, or SMBJ5.0AH equivalent, key selection considerations include its AEC-Q101 qualification, sub-1 ps response time, <1 µA leakage above 10 V, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on high-reliability automotive PCBs.
Technical Context
The SMBJ5.0AH operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast transient suppression with minimal capacitance. Its clamping behavior is defined by a well-controlled breakdown threshold (6.4–7.0 V) and low dynamic impedance, enabling effective voltage limiting during 10/1000 µs surges up to 800 A.
Thermally, it supports operation from –55 °C to +150 °C junction temperature, with RθJC = 10 °C/W and RθJA = 55 °C/W, allowing reliable power dissipation in constrained automotive environments. It meets moisture sensitivity level 1 per J-STD-020 and complies with RoHS and halogen-free requirements per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse operating voltage before conduction begins |
| VBR @ IT=10 mA | 6.4–7.0 V - guaranteed avalanche initiation range under standardized test conditions |
| VC @ IPP=800 A | 9.2 V - maximum clamped voltage during 10/1000 µs surge, defining protected circuit's worst-case overvoltage |
| PPK | 600 W - peak pulse power handling capability per single 10/1000 µs transient |
| ID @ VWM | <5.0 µA - ultra-low leakage ensures minimal standby current draw in battery-sensitive systems |
| Response Time | <1.0 ps - enables suppression of ESD events before sensitive ICs experience damage |
| TJ Range | –55 °C to +150 °C - supports under-hood automotive deployment without derating |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; defines current flow direction during clamping |
| Cathode (marked) | Protected line input | Connected to signal/power line being safeguarded; conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| Clamping voltage ≤9.2 V at 800 A | Ensures downstream 5 V logic ICs remain within absolute maximum ratings during ISO 7637-2 Pulse 2b (inductive load dump) |
| Moisture sensitivity level 1 | Enables direct placement without baking, reducing manufacturing overhead and risk of popcorning |
| RoHS & halogen-free | Complies with EU Directive 2011/65/EU and IEC 61249-2-21, supporting green supply chain requirements |
Applications
| Automotive Lighting Control | Infotainment Power Input Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers in headlamp control units exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground to clamp positive-going surges before they reach LDOs or CAN transceivers. Use Value: Limits rail voltage to ≤9.2 V during 800 A transients, preventing latch-up or gate oxide rupture in 5 V tolerant logic. | Use Scenario: Safeguarding USB-C PD controller inputs and display power rails in center-stack infotainment systems. IC Role / Device Role / Timing Role: Front-end surge suppressor on 5 V or 9 V power input lines, coordinated with upstream fuse and downstream ceramic capacitors. Use Value: Sub-1 ps response captures ESD events before system-level filtering attenuates them, preserving signal integrity on high-speed interfaces. |
| Body Control Module (BCM) Inputs | Industrial Sensor Interface Protection |
Use Scenario: Shielding LIN bus transceiver pins and wake-up inputs in door module ECUs subjected to cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on bidirectional LIN data line (with series resistor) or dedicated wake pin. Use Value: 5.0 V VWM aligns with LIN physical layer thresholds while maintaining <5 µA leakage to avoid false wake-ups. | Use Scenario: Protecting analog front-end inputs of 4–20 mA loop-powered sensors in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS on sensor supply line to absorb induced surges from nearby motor drives or relay switching. Use Value: 600 W PPK rating sustains repeated 10/1000 µs transients without degradation, ensuring multi-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A | Same VWM (5.0 V), VBR (6.4–7.0 V), VC (9.2 V), and package; non-AEC-Q101 rated | Lacks automotive qualification; suitable for industrial/commercial designs without AEC compliance mandates | Select SMBJ5.0A only when AEC-Q101 is not required and cost optimization is prioritized |
| SAC5.0 | Same VWM and clamping performance but in smaller SOD-123FL package; lower PPK (400 W); no AEC-Q101 certification | Lower surge margin and no automotive qualification; limited to space-constrained consumer or IoT endpoints | Choose SAC5.0 only for footprint-limited boards where 400 W surge rating suffices and automotive validation is unnecessary |
Compared with SMBJ5.0A and SAC5.0, the SMBJ5.0AH delivers verified AEC-Q101 qualification, full 600 W surge capability, and DO-214AA mechanical robustness - making it the sole choice for production automotive modules requiring ISO 7637-2 immunity and long-term under-hood reliability.
Availability
SMBJ5.0AH is available at Aetrix Electronics and suitable for automotive lighting control, body electronics, infotainment power input, and industrial sensor interface applications requiring stable component supply across extended product lifecycles.
Supply support for SMBJ5.0AH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and automotive-qualified components.
The SMBJH series was developed specifically for AEC-Q101-compliant transient suppression in 12 V/24 V automotive subsystems, emphasizing robust clamping, low leakage, and process consistency across temperature and lifetime.
FAQ
What is the clamping voltage of SMBJ5.0AH at its rated peak pulse current?
The SMBJ5.0AH has a maximum clamping voltage (VC) of 9.2 V when subjected to an 800 A peak impulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees that downstream 5 V logic circuits remain within safe operating limits during surge events. The SMBJ5.0AH maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMBJ5.0AH suitable for bidirectional transient protection?
No, SMBJ5.0AH is a unidirectional TVS diode intended for DC-biased lines such as power rails or single-ended signals referenced to ground. For bidirectional protection (e.g., data lines like CAN or LIN), TSC offers the SMBJ5.0AH's bipolar counterpart SMBJ5.0CAH - which uses identical packaging and clamping specs but supports symmetrical surge suppression in both polarities. The SMBJ5.0AH must not be used in AC-coupled or floating applications without external biasing.
Does SMBJ5.0AH meet automotive qualification standards?
Yes, SMBJ5.0AH is explicitly AEC-Q101 qualified per Version A2102 of the datasheet. It has passed accelerated stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and human-body-model (HBM) ESD. This qualification confirms its suitability for under-hood and cabin automotive applications where reliability under thermal, mechanical, and electrical stress is mandatory - a key differentiator from generic SMBJ5.0A variants.
What is the leakage current specification for SMBJ5.0AH at its working voltage?
At its 5.0 V working stand-off voltage (VWM), the SMBJ5.0AH exhibits a maximum blocking leakage current (ID) of 5.0 µA at 25 °C. This ultra-low leakage ensures minimal power loss in always-on automotive circuits such as wake-up inputs or LIN bus receivers. The SMBJ5.0AH maintains leakage below 1 µA above 10 V, further enhancing system-level energy efficiency and noise immunity.
How does SMBJ5.0AH compare to SMBJ5.0H in terms of breakdown voltage tolerance?
SMBJ5.0AH has a tighter breakdown voltage (VBR) tolerance than SMBJ5.0H: 6.40–7.00 V vs. 6.40–7.30 V at 10 mA test current. This narrower 0.6 V span improves design margin predictability in precision clamping applications, especially where downstream ICs have narrow absolute maximum voltage ratings. Both parts share identical package, clamping voltage (9.2 V), and peak power (600 W), but SMBJ5.0AH offers enhanced VBR consistency for high-volume automotive production.
SMBJ5.0AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 68A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ5.0AH FAQ
1.How can I place an order for SMBJ5.0AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0AH 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 SMBJ5.0AH reliable?
The price and inventory of SMBJ5.0AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0AH is usually 5 days.
3.What payment methods are accepted for SMBJ5.0AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0AH?
SMBJ5.0AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0AH 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 SMBJ5.0AH?
For technical support, including SMBJ5.0AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0AH requirements.
6.How does Aetrix verify that SMBJ5.0AH is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0AH 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 SMBJ5.0AH meets industry standards.
7.What is the process for return or replacement of SMBJ5.0AH?
All SMBJ5.0AH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0AH, 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 SMBJ5.0AH part is unused and in its original packaging.
Return procedure for SMBJ5.0AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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