My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG12CHE3/5B
- Part No.:
- SMBG12CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG12CHE3/5B.pdf
- Description:
- TVS DIODE 12VWM 22VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,670
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG12CHE3/5B 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 12 V stand-off voltage (VWM), 13.3–14.7 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBG12CHE3/5B datasheet, SMBG12CHE3/5B pinout, SMBG12CHE3/5B application, or SMBG12CHE3/5B equivalent, key selection considerations include its bi-directional clamping behavior, low clamping voltage of 19.9 V at 30.2 A IPPM, RoHS-compliant HE3 suffix with JESD 201 Class 2 whisker resistance, and suitability for automotive sensor line protection per ISO 7637-2.
Technical Context
This device operates as a bi-directional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low leakage (<5 µA at 12 V), while the DO-215AA package supports automated SMT placement and meets MSL Level 1 reflow profile (260 °C peak).
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, enabling reliable operation up to TJ = +150 °C. The 10/1000 µs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35, with derating applied above TA = 25 °C per published curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias range. |
| VBR min/max | 13.3 V / 14.7 V at IT = 1 mA - Confirmed avalanche onset window; ensures predictable turn-on across production lot. |
| VC @ IPPM | 19.9 V at 30.2 A - Clamped voltage during 600 W transient; determines maximum stress imposed on downstream ICs. |
| PPPM | 600 W (10/1000 µs) - Standardized surge energy handling capacity; validates compliance with IEC 61000-4-5 Level 4. |
| TJ max | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive environments. |
| Qualification | AEC-Q101 qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD. |
| Leakage ID | <5 µA at 12 V - Minimal DC loading on protected lines; preserves signal integrity in high-impedance sensor interfaces. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leadframe. Bi-directional construction means no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; connects across protected line and ground (or between differential lines) without orientation constraint. |
| Case (exposed pad) | Thermal and mechanical anchor | Not electrically active; soldered to copper pour for thermal dissipation and mechanical stability per recommended 5.0 mm × 5.0 mm pad layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN, LIN, sensor bridges) without polarity concerns. |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Glass-passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation in harsh environments. |
| MSL Level 1 rating | Supports standard SMT reflow without baking; compatible with high-volume manufacturing using JEDEC-compliant profiles. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance; eliminates tin whisker risk in long-life automotive modules. |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Voltage clamping element placed between sensor output and ECU input, limiting transient excursions to ≤19.9 V. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADCs while maintaining <5 µA leakage at 12 V bias. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD and coupled surges in vehicle networking nodes. IC Role / Device Role / Timing Role: Bi-directional TVS connected line-to-line and line-to-ground to clamp common-mode and differential transients simultaneously. Use Value: Maintains CAN signal integrity with <1 ns response time and adds no capacitance penalty (typ. <100 pF at 0 V) to 1 Mbps bus timing. |
| Industrial PLC I/O Protection | Consumer Appliance Motor Drive Feedback |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback during solenoid switching. IC Role / Device Role / Timing Role: Standoff-rated protector mounted at connector entry point, absorbing 600 W surges without failure. Use Value: Eliminates need for series impedance or additional filtering while sustaining 100,000+ surge events per MIL-STD-883H Method 3015.7. |
Use Scenario: Securing hall-effect rotor position feedback lines in BLDC motor drives within washing machines or HVAC systems. IC Role / Device Role / Timing Role: Low-leakage bi-directional clamp placed directly at motor controller IC input pins. Use Value: Preserves microvolt-level signal resolution during normal operation while limiting fault voltage to 19.9 V during 100 A surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA-E3/5B | Same VWM (12 V), but lower PPPM (400 W); uses DO-214AA (SMB) package with higher RθJA (140 °C/W). | Limited to lower-energy transients; not AEC-Q101 qualified; suitable for commercial-grade industrial controls only. | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin. |
| SMCJ12CAHE3/5B | Same VWM and AEC-Q101 rating, but larger DO-214AB (SMC) package; higher PPPM (1500 W) and lower VC (22.5 V @ 67.5 A). | Better suited for high-energy load-dump scenarios; requires larger PCB area and different thermal pad layout. | Choose when system-level surge testing exceeds 600 W or when board space allows larger footprint for enhanced margin. |
Compared with SMBG12CHE3/5B, SMBJ12CA-E3/5B offers reduced surge capability and no automotive qualification, while SMCJ12CAHE3/5B delivers higher power handling at the cost of increased size and thermal resistance-making SMBG12CHE3/5B the optimal balance of AEC-Q101 compliance, 600 W rating, and compact SMBG footprint.
Availability
SMBG12CHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN bus nodes, industrial PLC I/O modules, and consumer appliance motor feedback circuits requiring stable component supply across multi-year production cycles.
Supply support for SMBG12CHE3/5B 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 and automotive-grade validation.
The SMBG series was engineered specifically for high-reliability transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 qualification with optimized thermal performance in the DO-215AA package.
FAQ
What is the clamping voltage of SMBG12CHE3/5B under a 600 W transient?
The SMBG12CHE3/5B clamps to a maximum of 19.9 V when subjected to its rated 600 W peak pulse power (10/1000 µs waveform) at 30.2 A peak current. This value is measured and guaranteed per Vishay's datasheet Figure 1 and Table on page 2, ensuring predictable overvoltage limiting for protected circuitry.
Is SMBG12CHE3/5B suitable for automotive applications?
Yes, SMBG12CHE3/5B carries full AEC-Q101 qualification (noted in the "MECHANICAL DATA" section and confirmed in the ordering table footnote), making it approved for use in automotive powertrain, chassis, and body electronics where reliability under temperature cycling, humidity, and surge stress is mandatory.
What does the "HE3" suffix indicate in SMBG12CHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike the base "E3" variant, HE3 ensures enhanced reliability for automotive modules subject to long-term thermal aging and vibration.
How does SMBG12CHE3/5B differ from uni-directional variants like SMBG12A?
SMBG12CHE3/5B is bi-directional (CA suffix), meaning it clamps symmetrically for both polarities-ideal for AC signals or floating lines. In contrast, SMBG12A is uni-directional with cathode band marking and conducts only in reverse bias, requiring correct orientation and offering no positive-voltage transient suppression.
What is the thermal resistance of SMBG12CHE3/5B, and how does it affect layout?
SMBG12CHE3/5B has RθJA = 100 °C/W and RθJL = 20 °C/W. To maintain junction temperature below 150 °C under 600 W pulses, PCB layout must follow the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal, as specified in the "MECHANICAL DATA" section and Figure on page 4.
SMBG12CHE3/5B 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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 27.3A
- 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)
SMBG12CHE3/5B FAQ
1.How can I place an order for SMBG12CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG12CHE3/5B 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 SMBG12CHE3/5B reliable?
The price and inventory of SMBG12CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG12CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG12CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG12CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG12CHE3/5B?
SMBG12CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG12CHE3/5B 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 SMBG12CHE3/5B?
For technical support, including SMBG12CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG12CHE3/5B requirements.
6.How does Aetrix verify that SMBG12CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG12CHE3/5B 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 SMBG12CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG12CHE3/5B?
All SMBG12CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG12CHE3/5B, 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 SMBG12CHE3/5B part is unused and in its original packaging.
Return procedure for SMBG12CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG12CHE3/5B Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
