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Vishay General Semiconductor - Diodes Division SMBJ100AHE3/5B
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- Part No.:
- SMBJ100AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100AHE3/5B.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,948
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Product details
Overview
SMBJ100AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 100 V standoff voltage (VWM), 111–123 V breakdown voltage (VBR) at 1 mA, 162 V maximum clamping voltage (VC) at 3.7 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives, automotive ECUs, and telecom power supplies.
For engineers reviewing the SMBJ100AHE3/5B datasheet, SMBJ100AHE3/5B pinout, SMBJ100AHE3/5B application, or SMBJ100AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB pad layouts per JEDEC DO-214AA footprint.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 100 V), but triggers into low-impedance conduction when transient voltage exceeds VBR, limiting downstream voltage to ≤162 V at 3.7 A. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device complies with ANSI/IEEE C62.35 for transient suppressors and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling effective power dissipation in compact layouts without heatsinking for single-event transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail protection threshold. |
| VBR (min/max) | 111 V / 123 V at 1 mA - Confirmed breakdown range ensures predictable turn-on during fast transients (e.g., ISO 7637-2 pulse 1/2a). |
| VC @ IPPM | 162 V at 3.7 A - Clamping voltage limits protected IC or MOSFET drain-source stress during 600 W surge events. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform supports IEC 61000-4-5 Level 4 compliance when properly laid out. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with IPC-7351B. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT, indicated by HE3 suffix. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, cathode marked by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential node; completes clamping path during positive transients on cathode side. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 12 V rail); absorbs energy by conducting to anode when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables suppression of high-energy transients such as load dump (ISO 16750-2) without thermal runaway in single-event scenarios. |
| 162 V clamping voltage at 3.7 A | Provides margin below 200 V absolute maximum ratings of common 100 V-rated power MOSFETs and gate drivers. |
| AEC-Q101 qualified (HE3 suffix) | Confirms suitability for automotive control modules requiring extended temperature cycling, humidity, and lifetime reliability validation. |
| MSL Level 1, 260 °C peak reflow | Supports lead-free assembly in high-volume SMT lines without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over 10+ years in industrial environments with thermal cycling. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
|
Use Scenario: Protecting 12 V/24 V supply inputs in engine control units (ECUs) against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and system ground to clamp transients above 100 V. Use Value: Limits voltage seen by downstream PMICs and microcontrollers to ≤162 V, preventing latch-up or oxide damage during ISO 16750-2 Test Pulse 5a. |
Use Scenario: Safeguarding IGBT gate driver supply rails in variable-frequency drives exposed to inductive switching noise. IC Role / Device Role / Timing Role: TVS connected across +15 V gate supply and ground to absorb fast-rising dv/dt spikes from Miller capacitance coupling. Use Value: Fast response (<1 ps) and low clamping voltage ensure gate oxide integrity remains intact during repeated 600 W surge events. |
| Telecom DC Power Input | Consumer Appliance Main Board |
|
Use Scenario: Guarding PoE-powered equipment (e.g., IP cameras) against lightning-induced surges on 48 V input lines. IC Role / Device Role / Timing Role: Primary-level TVS on DC input before DC/DC converter, configured unidirectionally to avoid forward conduction during normal operation. Use Value: 100 V VWM allows full utilization of 48 V ±10 % input range while providing headroom for 100 V transients defined in IEC 61000-4-5. |
Use Scenario: Protecting microcontroller I/O lines and sensor interfaces in washing machines and HVAC controllers from ESD and relay coil flyback. IC Role / Device Role / Timing Role: Point-of-load TVS on 5 V/3.3 V logic rails, leveraging low leakage (<1 µA) to avoid loading sensitive analog sensors. Use Value: Glass-passivated junction maintains stable leakage performance across -40 °C to +85 °C ambient, ensuring consistent protection in varying cabinet temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100A-E3/5B | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM, RoHS-compliant but not automotive-qualified. | Approved for industrial and consumer use only; excluded from automotive production BOMs requiring AEC-Q101 traceability. | Select when cost sensitivity outweighs automotive qualification needs and environmental stress testing is not required. |
| SMAJ100AHE3/A | Same electrical specs but in smaller SMA (DO-214AC) package; 30 % lower PPPM (400 W), higher thermal resistance (150 °C/W). | Limited to lower-energy transients; unsuitable for load dump or high-dI/dt inverter applications due to reduced surge capacity. | Choose only for space-constrained designs where 400 W peak power suffices and thermal management permits higher RθJA. |
Compared with SMBJ100AHE3/5B, the E3/5B variant lacks AEC-Q101 validation and thus cannot support automotive qualification workflows, while the SMAJ100AHE3/A sacrifices 33 % peak power and thermal performance for footprint reduction - making SMBJ100AHE3/5B the optimal choice for demanding automotive and industrial surge environments.
Availability
SMBJ100AHE3/5B is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and telecom power supply prototyping requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBJ100AHE3/5B 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, precision, and automotive-grade qualification.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against ESD, EFT, and surge events is mission-critical.
FAQ
What is the clamping voltage of SMBJ100AHE3/5B at its rated peak pulse current?
The SMBJ100AHE3/5B has a maximum clamping voltage (VC) of 162 V at its specified peak pulse current (IPPM) of 3.7 A, measured using the standardized 10/1000 µs waveform. This value is critical for ensuring downstream components - such as 200 V-rated MOSFETs or 170 V-rated DC/DC controllers - remain within their absolute maximum voltage ratings during surge events. The SMBJ100AHE3/5B achieves this clamping performance while maintaining low incremental surge resistance, minimizing voltage overshoot beyond VC.
Is SMBJ100AHE3/5B suitable for automotive applications?
Yes, SMBJ100AHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number, which denotes Vishay's automotive-grade qualification including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling tests. It is widely used in engine control units, body control modules, and ADAS power supplies where sustained operation from −40 °C to +125 °C ambient and immunity to load dump transients are required. The SMBJ100AHE3/5B meets these demands with its 150 °C maximum junction temperature and validated reliability data.
What does the "5B" in SMBJ100AHE3/5B indicate?
The "5B" suffix in SMBJ100AHE3/5B specifies the packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format is optimized for high-speed automated pick-and-place assembly in volume manufacturing. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, while "5B" distinguishes it from other reel options like "52" (7-inch reel, 750 units). No electrical or thermal differences exist between "5B" and "52" variants - only logistics and handling parameters differ.
How does SMBJ100AHE3/5B compare to bidirectional TVS diodes like SMBJ100CA?
SMBJ100AHE3/5B is unidirectional and intended for DC line protection where polarity is fixed (e.g., +12 V rail to ground), offering lower leakage and tighter VBR tolerance than bidirectional equivalents. In contrast, SMBJ100CA protects AC or polarity-agnostic lines but exhibits higher reverse leakage and symmetric clamping in both directions. For automotive 12 V systems, SMBJ100AHE3/5B is preferred due to its superior clamping consistency and compatibility with standard DC grounding schemes - unlike SMBJ100CA, which would conduct during normal negative excursions.
What is the thermal resistance of SMBJ100AHE3/5B, and how does it affect layout?
The SMBJ100AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on 0.2" × 0.2" copper pads per terminal. These values mean that for a 5 W steady-state dissipation (not typical for TVS), junction temperature would rise ~500 °C above ambient - underscoring that SMBJ100AHE3/5B is designed for short-duration pulses, not continuous power. Layout best practices include using minimum 5.0 mm × 5.0 mm copper pads per terminal and avoiding thermal isolation to maintain specified surge capability. The SMBJ100AHE3/5B relies on transient thermal impedance, not steady-state cooling.
SMBJ100AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 3.7A
- 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 (SMBJ)
SMBJ100AHE3/5B FAQ
1.How can I place an order for SMBJ100AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100AHE3/5B 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 SMBJ100AHE3/5B reliable?
The price and inventory of SMBJ100AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ100AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100AHE3/5B?
SMBJ100AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100AHE3/5B 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 SMBJ100AHE3/5B?
For technical support, including SMBJ100AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100AHE3/5B requirements.
6.How does Aetrix verify that SMBJ100AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ100AHE3/5B 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 SMBJ100AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ100AHE3/5B?
All SMBJ100AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100AHE3/5B, 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 SMBJ100AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ100AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100AHE3/5B Tags
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