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Vishay General Semiconductor - Diodes Division SMBJ5.0AHM3_B/I
- Part No.:
- SMBJ5.0AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0AHM3_B/I.pdf
- Description:
- 600W,5.0V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,520
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Product details
Overview
SMBJ5.0AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 5.0 V stand-off voltage (VWM), 6.4–7.07 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 9.2 V at 65.2 A, and operates across -55 °C to +150 °C junction temperature - deployed in automotive ECUs, industrial sensor interfaces, and USB power input stages.
For engineers reviewing the SMBJ5.0AHM3_B/I datasheet, SMBJ5.0AHM3_B/I pinout, SMBJ5.0AHM3_B/I application, or SMBJ5.0AHM3_B/I equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world clamping performance under standardized surge waveforms - all critical for ESD/surge co-design and IEC 61000-4-5 compliance validation.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) to transient overvoltages, with low incremental surge resistance enabling stable clamping during repetitive 10/1000 µs surges at 0.01% duty cycle. Its unidirectional polarity (cathode-banded) supports DC rail protection where reverse conduction must be blocked.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and withstands 260 °C lead-free reflow peaks. Thermal resistance is 100 °C/W junction-to-ambient (on 5 mm × 5 mm copper pads) and 20 °C/W junction-to-lead - key for layout-dependent power dissipation management in high-density PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected line's nominal DC voltage. |
| VBR min/max | 6.4 V / 7.07 V at IT = 10 mA - guaranteed breakdown onset range; ensures reliable triggering above normal operating margin. |
| VC @ IPPM | 9.2 V at 65.2 A - clamped voltage during full 600 W surge; defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 600 W (10/1000 µs waveform) - peak transient energy handling capacity; validates compliance with IEC 61000-4-5 Level 4. |
| ID @ VWM | 800 µA max - reverse leakage at stand-off voltage; low enough to avoid loading 5 V logic or sensor supply rails. |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - industry-standard SMT outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-indicated by molded band. Dimensions: 5.59 mm × 4.06 mm × 2.44 mm (L × W × H), with 2.159 mm pad spacing and matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to protected line's ground or low-side return path; conducts only during forward surge events. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line's positive rail; blocks normal operation but avalanches during overvoltage to clamp to VC. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for engine control, ADAS, and infotainment modules. |
| Halogen-free & RoHS-compliant | HM3 suffix denotes halogen-free molding compound and lead-free terminations - meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-20E environmental requirements. |
| 600 W peak pulse rating | Handles 10/1000 µs transients up to 65.2 A without degradation - sufficient for ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 Combination Wave testing. |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage stress on protected ICs - e.g., 9.2 V clamping at 65.2 A ensures <1.5× VBR, reducing risk of latch-up in 5 V microcontrollers. |
| MSL Level 1 | No floor life limitation before reflow; supports unlimited storage and standard SMT assembly without baking - reduces manufacturing overhead. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery-fed ECU power input exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converter input; responds within picoseconds to limit voltage spikes to safe levels. Use Value: Clamps 50 V transients to ≤9.2 V, preventing damage to buck controller ICs rated for 16 V absolute maximum input. | Use Scenario: 4–20 mA current loop interface in PLC analog input module subjected to field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on signal line between terminal block and op-amp front-end; operates in reverse-bias standby mode. Use Value: 800 µA leakage at 5 V ensures minimal error in precision current measurement; 9.2 V clamping protects rail-to-rail input amplifiers. |
| USB Type-C VBUS Surge Suppression | Telecom DSL Line Transient Guard |
Use Scenario: VBUS line (5 V ±5%) in USB-C receptacle facing hot-plug insertion, cable ESD, and external power adapter faults. IC Role / Device Role / Timing Role: First-line unidirectional TVS on VBUS rail, positioned before USB PD controller and port power switch. Use Value: 5.0 V VWM aligns with USB spec; 9.2 V VC prevents overvoltage on 6 V-rated load switches while maintaining <100 pF capacitance (per Fig. 4). | Use Scenario: Analog front-end of DSL line card exposed to lightning-induced surges on twisted-pair subscriber lines per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing fast clamping for residual transients below 1 kV. Use Value: 600 W rating handles residual 10/1000 µs surges post-GDT; SMB package allows dense placement near RJ-11 connector without compromising creepage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0AHE3_B/I | Same electrical specs and SMB package, but RoHS-compliant (non-halogen-free) variant using E3 base P/N; no halogen-free certification. | Acceptable for commercial/industrial designs not requiring halogen-free compliance (e.g., non-automotive, non-EU export). | Select when halogen content is unrestricted and cost optimization is prioritized over automotive or green procurement mandates. |
| SMCJ5.0A-M3 | Higher 1500 W peak pulse power (SMC package), 10.3 V clamping at 143 A; larger 7.11 mm × 6.22 mm footprint. | Used where higher surge immunity is required (e.g., outdoor telecom, solar inverters), accepting larger board area and higher thermal mass. | Choose when system-level surge test requirements exceed 600 W or when longer surge duration (e.g., 8/20 µs) dominates design constraints. |
Compared with SMBJ5.0AHM3_B/I, SMBJ5.0AHE3_B/I offers identical protection performance without halogen-free assurance, while SMCJ5.0A-M3 trades compact size for 2.5× higher surge capacity - making the original optimal for space-constrained AEC-Q101-compliant automotive modules needing precise 5 V rail clamping.
Availability
SMBJ5.0AHM3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and USB-C power delivery systems requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for SMBJ5.0AHM3_B/I 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and long-term stability under thermal cycling are mandatory.
FAQ
What is the clamping voltage of SMBJ5.0AHM3_B/I at its rated peak pulse current?
The SMBJ5.0AHM3_B/I has a maximum clamping voltage (VC) of 9.2 V at its peak pulse current (IPPM) of 65.2 A, measured under the standardized 10/1000 µs waveform. This value is guaranteed across temperature and ensures downstream components see no more than 9.2 V during a full 600 W transient event. The SMBJ5.0AHM3_B/I datasheet specifies this parameter in Table 1 on page 2, confirming repeatability and process control.
Is SMBJ5.0AHM3_B/I certified for automotive applications?
Yes, SMBJ5.0AHM3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in the "MECHANICAL DATA" section. This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - validating SMBJ5.0AHM3_B/I for under-hood and chassis-mounted automotive electronics.
How does the halogen-free status of SMBJ5.0AHM3_B/I impact its compliance profile?
The HM3 suffix in SMBJ5.0AHM3_B/I indicates halogen-free construction per IEC 61249-2-21, with bromine and chlorine content <900 ppm each. Combined with RoHS compliance, this satisfies strict environmental requirements for automotive Tier 1 suppliers and EU-based industrial equipment - unlike E3-suffix variants. SMBJ5.0AHM3_B/I thus supports green procurement policies without sacrificing electrical performance.
What is the maximum reverse leakage current for SMBJ5.0AHM3_B/I at its stand-off voltage?
SMBJ5.0AHM3_B/I exhibits a maximum reverse leakage current (ID) of 800 µA at its 5.0 V stand-off voltage (VWM), tested at TA = 25 °C. This low leakage ensures minimal power loss and signal integrity impact in always-on 5 V circuits such as USB-C VBUS monitoring or sensor bias rails. The SMBJ5.0AHM3_B/I specification appears in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay datasheet 88392.
Can SMBJ5.0AHM3_B/I be used in bidirectional configurations?
No, SMBJ5.0AHM3_B/I is a unidirectional TVS diode, indicated by its "A" suffix and cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., SMBJ5.0CA). Using SMBJ5.0AHM3_B/I in reverse-biased AC applications would result in forward conduction and failure. Always verify polarity alignment in schematic capture - SMBJ5.0AHM3_B/I must be oriented with cathode toward the protected positive rail.
SMBJ5.0AHM3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ5.0AHM3_B/I FAQ
1.How can I place an order for SMBJ5.0AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0AHM3_B/I 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 SMBJ5.0AHM3_B/I reliable?
The price and inventory of SMBJ5.0AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ5.0AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0AHM3_B/I?
SMBJ5.0AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0AHM3_B/I 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 SMBJ5.0AHM3_B/I?
For technical support, including SMBJ5.0AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ5.0AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0AHM3_B/I 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 SMBJ5.0AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ5.0AHM3_B/I?
All SMBJ5.0AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0AHM3_B/I, 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 SMBJ5.0AHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ5.0AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0AHM3_B/I Tags
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