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Vishay General Semiconductor - Diodes Division SMBG33CHE3/5B
- Part No.:
- SMBG33CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG33CHE3/5B.pdf
- Description:
- TVS DIODE 33VWM 59VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,646
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Product details
Overview
SMBG33CHE3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping voltage transients on signal or power lines. It features 33 V stand-off voltage (VWM), 53.3 V maximum clamping voltage (VC) at 11.3 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform), qualified to AEC-Q101 for automotive electronics protection.
For engineers reviewing the SMBG33CHE3/5B datasheet, SMBG33CHE3/5B pinout, SMBG33CHE3/5B application, or SMBG33CHE3/5B equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, 33 V stand-off rating, low clamping ratio (VC/VWM ≈ 1.62), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector in bi-directional configuration, with symmetrical breakdown behavior (VBR min/max = 36.7 V / 40.6 V at 1 mA). Its glass-passivated junction enables fast response (<1 ns) and stable leakage performance (ID ≤ 1.0 μA at VWM), critical for protecting sensitive inputs against ESD and inductive switching spikes.
Thermal design is constrained by RθJA = 100 °C/W and TJ max = 150 °C, requiring PCB thermal management per recommended 0.2" × 0.2" copper pads. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, distinguishing it from commercial-grade E3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 36.7 V / 40.6 V at 1 mA - Confirmed symmetrical breakdown threshold in both directions |
| VC @ IPPM | 53.3 V at 11.3 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 600 W - Peak transient energy absorption capacity under standard waveform |
| ID @ VWM | ≤ 1.0 μA - Low leakage ensures minimal standby power loss and signal integrity |
| TJ max | +150 °C - Enables operation in under-hood automotive environments |
| Qualification | AEC-Q101 - Validated reliability for automotive electronic control units and sensor interfaces |
Pinout & Package
DO-215AA (SMBG) surface-mount package: molded epoxy case meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002/JESD 22-B102, no polarity marking (bi-directional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional terminals conduct equally in either polarity above VBR; no cathode band marking |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without derating |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature sensors exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across sensor output and ground to limit transients to <53.3 V. Use Value: Prevents latch-up or damage to 3.3 V/5 V ADC front-ends while maintaining signal fidelity below 33 V normal operation. |
Use Scenario: Safeguarding CANH/CANL differential pair in vehicle body control modules against ESD and inductive kickback. IC Role / Device Role / Timing Role: Paired SMBG33CHE3/5B devices (one per line) clamp common-mode surges without distorting 1 Mbps CAN signaling. Use Value: Maintains bus integrity during ISO 10605 ±8 kV contact discharge while meeting AEC-Q101 automotive qualification requirements. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive |
Use Scenario: Input-stage protection for 24 V DC telecom power supplies subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary clamping element across input rails, absorbing up to 600 W transient energy. Use Value: Limits rail voltage excursion to 53.3 V during 10/1000 μs surges, preventing overvoltage shutdown of downstream DC/DC controllers. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances during commutation. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp bidirectional inductive spikes generated during PWM switching. Use Value: Eliminates relay contact arcing and protects H-bridge MOSFETs rated for 40 V drain-source breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA-E3/5B | Same VWM (33 V) and VC (53.3 V), but lower PPPM (600 W vs. SMBJ's 600 W - identical), non-AEC-Q101, commercial grade only | Lacks automotive qualification; suitable for industrial/commercial designs without AEC compliance mandates | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive reliability validation |
| SMCJ33CAHE3/5B | Higher PPPM (1500 W), same VWM/VC, larger DO-214AB (SMC) package (7.11 mm × 6.22 mm vs. SMBG's 4.57 mm × 3.94 mm) | Provides greater surge margin but requires larger PCB area and different pad layout | Choose when system-level surge testing exceeds 600 W requirements and board space permits larger footprint |
Compared with SMBJ33CA-E3/5B, SMBG33CHE3/5B adds AEC-Q101 qualification for automotive use; compared with SMCJ33CAHE3/5B, it trades 900 W surge headroom for 40 % smaller PCB footprint and identical clamping performance at 33 V.
Availability
SMBG33CHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interfaces, telecom power supply inputs, and consumer appliance motor drive circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG33CHE3/5B 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, and protection devices with emphasis on high-reliability and automotive-grade solutions.
The SMBG series was engineered specifically for space-constrained, high-surge automotive and industrial applications where bi-directional clamping, AEC-Q101 compliance, and low-profile SMT packaging are mandatory.
FAQ
What is the polarity configuration of SMBG33CHE3/5B?
SMBG33CHE3/5B is a bi-directional transient voltage suppressor, meaning it conducts symmetrically in both forward and reverse directions once the breakdown voltage is exceeded. Unlike uni-directional variants, it has no cathode band marking and is intended for AC or differential signal line protection where polarity reversal may occur during transients.
Does SMBG33CHE3/5B meet automotive qualification standards?
Yes, SMBG33CHE3/5B carries the HE3 suffix, which explicitly denotes AEC-Q101 qualification per Vishay's ordering nomenclature. This includes validation for temperature cycling, high-temperature operating life, and ESD robustness required for automotive electronic control units and sensor modules.
What is the maximum clamping voltage of SMBG33CHE3/5B under surge conditions?
The maximum clamping voltage (VC) of SMBG33CHE3/5B is 53.3 V, measured at its rated peak pulse current (IPPM) of 11.3 A using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the SMBG package differ from SMB or SMC packages in terms of footprint?
The SMBG (DO-215AA) package measures 4.57 mm × 3.94 mm, making it 25 % smaller than the DO-214AA (SMB) and 45 % smaller than the DO-214AB (SMC). Its reduced size supports high-density layouts in automotive ECUs and portable industrial equipment where board space is constrained.
Is SMBG33CHE3/5B compatible with lead-free reflow soldering processes?
Yes, SMBG33CHE3/5B is rated for MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, fully compatible with standard lead-free soldering profiles. Its matte tin-plated terminations meet J-STD-002 and JESD 22-B102 solderability requirements without pre-baking.
SMBG33CHE3/5B 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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 10.2A
- 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)
SMBG33CHE3/5B FAQ
1.How can I place an order for SMBG33CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG33CHE3/5B 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 SMBG33CHE3/5B reliable?
The price and inventory of SMBG33CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG33CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG33CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG33CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG33CHE3/5B?
SMBG33CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG33CHE3/5B 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 SMBG33CHE3/5B?
For technical support, including SMBG33CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG33CHE3/5B requirements.
6.How does Aetrix verify that SMBG33CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG33CHE3/5B 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 SMBG33CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG33CHE3/5B?
All SMBG33CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG33CHE3/5B, 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 SMBG33CHE3/5B part is unused and in its original packaging.
Return procedure for SMBG33CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG33CHE3/5B Tags
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