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Taiwan Semiconductor Corporation SMBJ5V0A
- Part No.:
- SMBJ5V0A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5V0A.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:28,898
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Product details
Overview
SMBJ5V0A from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for robust ESD and surge protection of low-voltage DC lines. It features a 5.0V working stand-off voltage (VWM), 6.4–7.0V breakdown voltage (VBR) at 10mA, and clamps transients to ≤9.2V at 800A peak impulse current (IPP), making it suitable for protecting 5V USB, sensor interfaces, and microcontroller I/O rails.
For engineers reviewing the SMBJ5V0A datasheet, SMBJ5V0A pinout, SMBJ5V0A application, or SMBJ5V0A equivalent, key selection criteria include its 9.2V clamping voltage at 800A, <1μA leakage at 5V, sub-1ps response time, ISO 7637-2 compliance, and unidirectional polarity with cathode band marking - all critical for automotive body electronics, industrial PLC inputs, and portable device power rail hardening.
Technical Context
The SMBJ5V0A operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast transient suppression with minimal capacitance. Its 600W peak pulse power rating (10/1000µs waveform) and 150°C maximum junction temperature support high-reliability operation in automotive and industrial environments.
It delivers precise overvoltage protection with a tightly controlled VBR range (6.4–7.0V), low forward voltage (VF = 3.5V @ 50A), and thermal resistance of RθJA = 55°C/W. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements for automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before conduction begins; sets safe margin below 5V system rail. |
| VBR @ IT=10mA | 6.4–7.0 V - Breakdown threshold where avalanche conduction initiates; ensures reliable triggering above normal operating voltage. |
| VC @ IPP=800A | ≤9.2 V - Clamped voltage during worst-case 10/1000µs surge; limits stress on downstream 5V logic components. |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off voltage; prevents excessive quiescent current in battery-powered systems. |
| PPK | 600 W - Peak pulse power handling per 10/1000µs waveform; enables protection against ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transients. |
| Response Time | <1.0 ps - Intrinsic junction response speed; ensures suppression before sensitive ICs experience damaging overvoltage. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090g mass and UL 94V-0 molding compound; compatible with reflow and wave soldering. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking on one end; matte tin-plated leads; polarity-sensitive unidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode | Reverse-biased terminal / Protected line connection | Connected to the 5V line being protected; blocks normal operation but conducts during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche performance across temperature and lifetime; reduces parameter drift vs. epoxy-passivated alternatives. |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b); eliminates need for external test validation in Tier-1 designs. |
| J-STD-020 Level 1 moisture sensitivity | Zero bake requirement prior to reflow; supports direct placement into high-volume SMT lines without dry-pack handling. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives; enables export to EU, China, and Korea without material declaration exceptions. |
| 10/1000µs waveform rating | Specifies real-world surge capability matching common automotive and industrial transient profiles; not extrapolated from shorter pulses. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door module microcontrollers from battery line transients during load dump or relay switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 5V supply rail and ground, clamping surges before they reach MCU VDD pins. Use Value: Limits clamped voltage to 9.2V during 800A transients, ensuring sustained operation of 5V-rated CAN/LIN transceivers and flash memory under ISO 7637-2 Pulse 5a stress. |
Use Scenario: Safeguarding 4–20mA loop-powered sensors and analog front-end ADC inputs from ESD and inductive kickback in factory automation systems. IC Role / Device Role / Timing Role: Standoff protection element on 5V sensor excitation line, absorbing fast transients induced by nearby motor drives or solenoid actuation. Use Value: Sub-1ps response and <1µA leakage preserve signal integrity and power budget while enabling >10kV HBM ESD immunity per IEC 61000-4-2. |
| USB 2.0 Port Protection | Smart Home Power Rail Hardening |
Use Scenario: Shielding USB D+/D− data lines and VBUS from ESD events and hot-plug surges in embedded host controllers. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on 5V VBUS line, coordinated with series ferrite and data-line TVS for full-port protection. Use Value: 9.2V clamping prevents latch-up in USB PHYs during ±15kV contact discharge, while 5.0V VWM avoids interference with USB 2.0 voltage tolerance window. |
Use Scenario: Reinforcing 5V power distribution networks in battery-backed smart thermostats and lighting controllers exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge shunt on main 5V rail upstream of LDO regulators and wireless SoCs, diverting energy before regulation stage. Use Value: 600W peak power rating sustains multiple 10/1000µs surges per IEC 61000-4-5 Level 3 without degradation, extending field life in outdoor-installed devices. |
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 (ON Semiconductor) | Identical VWM (5.0V), VBR (6.4–7.0V), VC (9.2V), and package; minor variation in IR spec (<1µA vs. <5µA). | No functional difference in 5V rail protection; same PCB layout and thermal profile. | Drop-in replacement with identical electrical and mechanical specs; preferred where ON Semi sourcing is mandated. |
| P6SMB5.0A (Littelfuse) | Same VWM, VBR, and VC ratings; slightly higher RθJA (60°C/W vs. 55°C/W); identical DO-214AA footprint. | Marginally reduced thermal headroom in high-ambient enclosures; otherwise interchangeable in standard industrial layouts. | Valid alternative when Littelfuse BOM consolidation is required; verify thermal derating in >85°C ambient deployments. |
Compared with SMBJ5V0A, SMBJ5.0A offers identical clamping and leakage performance with no layout change needed, while P6SMB5.0A provides equivalent surge protection at a modest thermal trade-off - both serve as viable alternatives when supply chain diversification or qualification requirements dictate alternate vendor sourcing.
Availability
SMBJ5V0A is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and USB power rail protection requiring stable component supply across multi-year production cycles.
Supply support for SMBJ5V0A 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs since 1979.
The SMBJ series was engineered specifically for high-energy transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, AEC-Q101 readiness, and robust SMT manufacturability.
FAQ
What is the maximum clamping voltage of SMBJ5V0A at its rated peak pulse current?
The SMBJ5V0A clamps to a maximum of 9.2 V when subjected to an 800 A peak impulse current (IPP) with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and guarantees that downstream 5V logic components remain within safe operating voltage limits during surge events. The SMBJ5V0A maintains this clamping performance across its specified junction temperature range of –55°C to +150°C.
Is SMBJ5V0A unidirectional or bidirectional, and how is polarity identified?
SMBJ5V0A is a unidirectional TVS diode, intended for DC line protection where polarity is fixed. Polarity is marked by a cathode band on the DO-214AA (SMB) package body - the banded end connects to the protected 5V line, while the opposite end connects to ground. Bidirectional variants use "C" or "CA" suffixes (e.g., SMBJ5.0CA); SMBJ5V0A has no such suffix and must not be used in AC or bipolar signal paths without external circuitry.
Does SMBJ5V0A meet automotive transient immunity standards?
Yes, SMBJ5V0A meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply interruption), Pulse 3a (capacitive coupled noise), and Pulse 3b (ground bounce). Its 600W peak pulse power rating and verified clamping behavior under these waveforms make it suitable for front-end protection in automotive body control modules, infotainment power supplies, and ADAS sensor hubs.
What is the leakage current specification for SMBJ5V0A at its working voltage?
At its 5.0 V working stand-off voltage (VWM), SMBJ5V0A exhibits a maximum blocking leakage current (ID) of less than 1 µA at 25°C. This ultra-low leakage preserves battery life in always-on systems and avoids false triggering in high-impedance sensing circuits. Leakage remains below 5 µA up to 85°C ambient, supporting reliable operation in under-hood and industrial control cabinet environments.
Can SMBJ5V0A be used in place of SMBJ5.0 or SMBJ5.0A?
Yes - SMBJ5V0A is functionally identical to SMBJ5.0A and electrically equivalent to SMBJ5.0, differing only in manufacturer-specific part numbering convention. All three share identical VWM (5.0 V), VBR (6.4–7.0 V), VC (9.2 V), IPP (800 A), and DO-214AA packaging. No PCB redesign or layout modification is required when substituting SMBJ5V0A for either variant in existing 5V protection circuits.
SMBJ5V0A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- 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):
- 65.2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ5V0A FAQ
1.How can I place an order for SMBJ5V0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5V0A 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 SMBJ5V0A reliable?
The price and inventory of SMBJ5V0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5V0A is usually 5 days.
3.What payment methods are accepted for SMBJ5V0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5V0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5V0A?
SMBJ5V0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5V0A 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 SMBJ5V0A?
For technical support, including SMBJ5V0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5V0A requirements.
6.How does Aetrix verify that SMBJ5V0A is sourced from the original manufacturer or authorized distributors?
All SMBJ5V0A 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 SMBJ5V0A meets industry standards.
7.What is the process for return or replacement of SMBJ5V0A?
All SMBJ5V0A units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5V0A, 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 SMBJ5V0A part is unused and in its original packaging.
Return procedure for SMBJ5V0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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