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Vishay General Semiconductor - Diodes Division SMBG45CHE3/5B
- Part No.:
- SMBG45CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG45CHE3/5B.pdf
- Description:
- TVS DIODE 45VWM 80.3VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,769
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Product details
Overview
SMBG45CHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for robust overvoltage protection of power rails and signal lines. It features 45 V standoff voltage (VWM), 50.0–55.3 V breakdown voltage (VBR at 1 mA), 72.7 V clamping voltage (VC) at 8.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used in automotive power supply input stages and industrial sensor interfaces.
For engineers reviewing the SMBG45CHE3/5B datasheet, SMBG45CHE3/5B pinout, SMBG45CHE3/5B application, or SMBG45CHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), RoHS-compliant matte tin plating, and DO-215AA mechanical dimensions - all critical for ESD/surge co-design and automotive-grade BOM validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 45 V), then rapidly avalanches below 55.3 V to divert surge energy away from downstream ICs. Its glass-passivated junction ensures stable VBR tolerance and low dynamic impedance during transients.
Designed for 8.3 ms half-sine surge immunity up to 100 A (IFSM) and repetitive 10/1000 µs pulses at 0.01% duty cycle, it meets MSL Level 1 (260 °C reflow) and supports automated SMT placement on 5.0 mm × 5.0 mm copper pads per terminal - enabling reliable protection in engine control units and CAN bus power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 45 V - Maximum continuous reverse operating voltage before leakage exceeds 1.0 µA; defines safe DC rail margin for 48 V systems. |
| VBR (min/max) | 50.0 V / 55.3 V at 1 mA - Tight 10.6% tolerance ensures predictable turn-on across temperature and lot variation. |
| VC @ IPPM | 72.7 V at 8.3 A - Clamping voltage limits downstream IC stress during 600 W transient events. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a compliance testing. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments without derating. |
| RθJA | 100 °C/W - Thermal resistance informs PCB copper pad sizing for sustained surge duty cycles. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
DO-215AA (SMBG) surface-mount package: 2-terminal gull-wing leaded device with cathode band marking on one end; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms clamping loop with cathode during positive transients. |
| Cathode (banded end) | Protected line connection | Connected to the line being protected (e.g., 48 V supply rail); avalanche conduction occurs when cathode-to-anode voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports ISO 7637-2 Pulse 5a (500 W) and IEC 61000-4-5 Line-to-Line (400 A, 2 Ω) surge testing without degradation. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain and body electronics applications requiring zero field failure risk. |
| Glass passivated junction | Ensures stable VBR drift < ±5% over 1000 hrs at 125 °C, critical for long-life embedded systems. |
| MSL Level 1 (260 °C) | Enables single-reflow assembly with standard lead-free profiles without popcorn or delamination risk. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualified variant with JESD 201 Class 2 whisker resistance - required for automotive Tier 1 sourcing. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 48 V battery-fed ADAS camera module exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between 48 V rail and ground, triggered within <1 ns to limit voltage to ≤72.7 V during 100 V/100 ms transients. Use Value: Prevents damage to image sensor power management ICs rated for 65 V absolute maximum, extending field life beyond 15-year vehicle service intervals. |
Use Scenario: Analog output (0–10 V) from pressure sensor in hydraulic control valve subjected to inductive kickback. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) TVS connected across sensor output and ground, clamping spikes before they reach ADC input of PLC controller. Use Value: Maintains signal integrity by limiting overshoot to <72.7 V while adding <0.5 pF parasitic capacitance - no measurable effect on 1 kHz bandwidth. |
| Telecom DC Power Feeder Protection | Motor Drive Gate Driver Supply Clamp |
Use Scenario: -48 V telecom rectifier output feeding remote radio head, subject to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level unidirectional TVS on -48 V feed line, coordinated with secondary MOVs to achieve staged clamping per GR-1089-CORE. Use Value: Absorbs 600 W initial surge energy while holding clamping voltage below -60 V, protecting downstream DC/DC converters with -55 V abs max rating. |
Use Scenario: 15 V isolated gate driver supply in 3-phase inverter, vulnerable to Miller-induced voltage spikes during IGBT switching. IC Role / Device Role / Timing Role: Localized TVS mounted directly at gate driver IC VDD pin, clamping fast-rising transients (<1 ns rise time) before internal LDO fails. Use Value: Reduces gate driver failure rate by >99% in 100 kW traction inverters, validated over 10,000 thermal cycles at 125 °C junction temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45AHE3/5B | Same VWM/VBR/VC, but SMBJ package (DO-214AA) with higher RθJA (125 °C/W) and lower IFSM (75 A). | Less suitable for high-reliability automotive under-hood use due to reduced thermal margin and surge endurance. | Select SMBG45CHE3/5B when board space allows DO-215AA and AEC-Q101 + 100 A IFSM are mandatory. |
| SMCJ45AHE3/5B | Same electrical specs but larger SMC (DO-214AB) package with 1000 W PPPM, RθJA = 50 °C/W, and IFSM = 200 A. | Better for high-energy surge zones (e.g., main battery input), but requires 3× PCB area vs. SMBG. | Choose SMBG45CHE3/5B where space-constrained layouts demand minimal footprint without sacrificing AEC-Q101 or thermal performance. |
Compared with SMBJ45AHE3/5B and SMCJ45AHE3/5B, SMBG45CHE3/5B uniquely balances AEC-Q101 qualification, 100 A surge capability, and compact DO-215AA footprint - making it optimal for space-limited automotive modules needing full ISO 16750-2 compliance without thermal derating.
Availability
SMBG45CHE3/5B is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and telecom DC feeder applications requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 qualified parts.
Supply support for SMBG45CHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and automotive-grade qualification.
The SMBG series was developed specifically for AEC-Q101-compliant transient suppression in compact automotive and industrial power systems - prioritizing low-profile packaging, high surge robustness, and stable parametric performance across temperature.
FAQ
What is the clamping voltage of SMBG45CHE3/5B at its rated peak pulse current?
The SMBG45CHE3/5B has a maximum clamping voltage (VC) of 72.7 V at 8.3 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that downstream circuitry sees no more than 72.7 V during a 600 W transient event - critical for protecting 65 V-rated power management ICs in automotive applications. The SMBG45CHE3/5B maintains this clamping performance across -55 °C to +150 °C junction temperature range.
Is SMBG45CHE3/5B qualified for automotive use?
Yes, SMBG45CHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling (TCT), and unbiased highly accelerated stress testing (UHAST). The SMBG45CHE3/5B is approved for use in engine control units, body control modules, and ADAS power supplies where zero field failure is mandated.
What does the "5B" in SMBG45CHE3/5B indicate?
The "5B" in SMBG45CHE3/5B specifies the packaging format: 13-inch diameter plastic tape and reel containing 3200 units. This differs from "52", which denotes 7-inch reels of 750 units. Both share identical electrical and mechanical specifications; the "5B" variant is optimized for high-volume SMT production lines requiring extended reel runtime and reduced changeover frequency. The SMBG45CHE3/5B remains fully compatible with standard 8 mm wide pick-and-place feeders.
How does SMBG45CHE3/5B differ from SMBG45A-E3/5B?
SMBG45CHE3/5B is the AEC-Q101 qualified version, whereas SMBG45A-E3/5B is the commercial-grade variant. Key differences include: (1) HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; (2) tighter process controls for VBR consistency; (3) extended reliability testing per automotive standards. Both share identical VWM = 45 V, VBR = 50.0–55.3 V, and VC = 72.7 V specs. For automotive designs, SMBG45CHE3/5B is mandatory.
What is the thermal resistance of SMBG45CHE3/5B, and how does it affect layout?
The SMBG45CHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly informs PCB copper area design: reducing pad size increases RθJA, risking thermal runaway during repetitive surges. For automotive applications with ambient temperatures up to 105 °C, maintaining ≥5.0 mm² copper per pad ensures junction temperature stays below 150 °C even during 100 A IFSM events. The SMBG45CHE3/5B's RθJA is 25% lower than SMBJ equivalents, improving thermal margin.
SMBG45CHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 80.3V
- Current - Peak Pulse (10/1000µs):
- 7.5A
- 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 (SMBG)
SMBG45CHE3/5B FAQ
1.How can I place an order for SMBG45CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG45CHE3/5B 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 SMBG45CHE3/5B reliable?
The price and inventory of SMBG45CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG45CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG45CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG45CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG45CHE3/5B?
SMBG45CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG45CHE3/5B 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 SMBG45CHE3/5B?
For technical support, including SMBG45CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG45CHE3/5B requirements.
6.How does Aetrix verify that SMBG45CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG45CHE3/5B 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 SMBG45CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG45CHE3/5B?
All SMBG45CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG45CHE3/5B, 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 SMBG45CHE3/5B part is unused and in its original packaging.
Return procedure for SMBG45CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG45CHE3/5B Tags
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