My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ10H
- Part No.:
- SMBJ10H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ10H.pdf
- Description:
- 600W, 12.4V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,730
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ10H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 600W peak pulse power, 10V working stand-off voltage (VWM), and 18.8V maximum clamping voltage (VC) at 33A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ10H datasheet, SMBJ10H pinout, SMBJ10H application, or SMBJ10H equivalent, key selection criteria include clamping performance under 10/1000µs surge, AEC-Q101 qualification for automotive use, low leakage (<5µA at 10V), fast response (<1.0ps), and compatibility with automated SMT placement on 12V battery-supplied systems.
Technical Context
The SMBJ10H operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 11.1–13.6V breakdown range (VBR@IT = 1mA). Its glass-passivated junction ensures stable VBR tolerance and low leakage, while the DO-214AA package provides 10°C/W junction-to-case thermal resistance for reliable power dissipation during repetitive transients.
Designed for automotive-grade ESD and load-dump protection, it meets ISO 7637-2 immunity requirements and supports operation from –55°C to +150°C junction temperature. Its 3.5V forward voltage at 50A (per spec note) confirms suitability for high-current uni-directional clamp paths without excessive conduction loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; sets system rail margin for 12V automotive circuits. |
| VBR min/max | 11.1 / 13.6 V @ 1 mA - Confirmed breakdown range ensures predictable turn-on across temperature and unit variation. |
| VC @ IPP | 18.8 V @ 33 A - Clamping voltage under 10/1000µs surge defines worst-case overvoltage seen by protected ICs. |
| PPK | 600 W - Peak pulse power rating determines survivability against standardized load-dump and EFT events. |
| ID @ VWM | <5 µA - Ultra-low leakage preserves battery life and avoids false triggering in always-on monitoring circuits. |
| TJ max | +150 °C - Enables deployment in under-hood environments without derating concerns up to ambient 125°C. |
| RθJA | 55 °C/W - Thermal resistance enables PCB-level heatsinking design for sustained transient duty cycles. |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability; moisture sensitivity level 1 per J-STD-020; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path input | Connected to protected circuit ground or low-side return; defines polarity for unidirectional clamping. |
| Cathode | Clamping output / surge sink | Connected to protected line (e.g., 12V rail); conducts surge current to ground when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, HAST, and UHST. |
| Glass passivated junction | Ensures stable VBR tolerance, low IR drift, and long-term reliability under thermal cycling and humidity exposure. |
| Clamping response <1.0 ps | Enables protection of high-speed interfaces and microcontrollers against sub-nanosecond ESD events. |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Guarantees immunity compliance for 12V vehicle electrical systems without external filtering augmentation. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally constrained industrial and automotive production. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from battery reverse connection, jump-start spikes, and alternator load dump. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 12V supply rail and ground, triggered only during overvoltage transients. Use Value: Limits rail voltage to ≤18.8V during 600W surges, preventing latch-up or oxide damage in 3.3V/5V logic powered from local LDOs. | Use Scenario: Safeguarding 24V DC digital input channels against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Standoff device in series with optocoupler input, conducting only during >11.1V excursions to shunt energy to chassis ground. Use Value: Maintains <5µA leakage at 24V nominal, avoiding false triggering while clamping 33A surges within 18.8V ceiling. |
| LED Headlamp Driver Power Stage | Smart Sensor Node Power Rail |
Use Scenario: Suppressing inductive kickback from high-side MOSFET switches driving LED strings in automotive lighting. IC Role / Device Role / Timing Role: Parallel-connected TVS across MOSFET drain-source, activated during turn-off voltage overshoot. Use Value: Withstands 100A IFSM surge and clamps to 18.8V, protecting 40V-rated gate drivers and maintaining PWM timing integrity. | Use Scenario: Securing 3.3V/5V power inputs of IoT sensor nodes exposed to ESD during handling or installation. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on main power entry, upstream of DC-DC converter. Use Value: Sub-1ps response captures human-body-model (HBM) ESD before downstream LDOs or regulators react, preserving firmware execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10AH | Narrower VBR range (11.1–12.3 V vs. 11.1–13.6 V); same VWM, VC, and PPK. | Better VBR consistency for precision clamp thresholds; identical footprint and thermal performance. | Select SMBJ10AH where tighter breakdown tolerance is required for deterministic clamping onset. |
| SAC10 | Same VWM (10 V) but lower PPK (400 W); higher VC (20 V); different package (DO-214AC/SMA). | Lower surge capacity and less stringent automotive qualification; suitable for cost-sensitive non-automotive designs. | Choose SAC10 only for non-AEC-Q101 applications where 400W surge rating suffices and DO-214AC layout is acceptable. |
Compared with SMBJ10AH and SAC10, the SMBJ10H offers broader VBR tolerance for robustness across manufacturing spread, full AEC-Q101 compliance for automotive use, and superior 600W surge handling-making it optimal for safety-critical 12V rail protection where clamping predictability and ruggedness are prioritized over tight VBR binning.
Availability
SMBJ10H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, LED driver power stages, and smart sensor node power rails requiring stable component supply across extended temperature and high-reliability environments.
Supply support for SMBJ10H 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and automotive-qualified components.
The SMBJH series was developed specifically for AEC-Q101-compliant transient suppression in 12V/24V automotive power networks and industrial control systems demanding high surge robustness and low leakage.
FAQ
What is the breakdown voltage range of SMBJ10H?
The SMBJ10H has a minimum breakdown voltage (VBR) of 11.1 V and a maximum of 13.6 V, measured at 1 mA test current per the datasheet. This range ensures reliable clamping onset across process variation and temperature extremes, and is confirmed in the Electrical Specifications table on page 2 of the Taiwan Semiconductor SMBJH Series datasheet revision A2102.
Is SMBJ10H suitable for bidirectional transient protection?
No, SMBJ10H is a unidirectional TVS diode intended for single-polarity clamping. For bidirectional protection, Taiwan Semiconductor specifies parts with "CH" or "CAH" suffixes (e.g., SMBJ10CH). The SMBJ10H's cathode band marking and forward voltage specification (3.5 V @ 50 A) confirm its unidirectional architecture and polarity-sensitive placement.
Does SMBJ10H meet automotive qualification standards?
Yes, SMBJ10H is explicitly AEC-Q101 qualified and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b test requirements. Its qualification is stated in the FEATURES section of the datasheet and supported by thermal, humidity, and lifetime stress testing per the AEC-Q101 standard, making it suitable for under-hood and body-control module applications.
What is the maximum clamping voltage of SMBJ10H under surge conditions?
The SMBJ10H has a maximum clamping voltage (VC) of 18.8 V at a 33 A peak impulse current (IPP), tested with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during standardized surge events and is critical for ensuring downstream ICs remain within absolute maximum ratings.
What package type does SMBJ10H use, and is it compatible with standard SMT assembly?
SMBJ10H uses the DO-214AA (SMB) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability. Its mechanical outline and moisture sensitivity level 1 (per J-STD-020) ensure full compatibility with automated pick-and-place and reflow processes used in high-volume automotive and industrial PCB assembly lines.
SMBJ10H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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 (SMB)
SMBJ10H FAQ
1.How can I place an order for SMBJ10H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ10H 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 SMBJ10H reliable?
The price and inventory of SMBJ10H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ10H is usually 5 days.
3.What payment methods are accepted for SMBJ10H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ10H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ10H?
SMBJ10H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ10H 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 SMBJ10H?
For technical support, including SMBJ10H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ10H requirements.
6.How does Aetrix verify that SMBJ10H is sourced from the original manufacturer or authorized distributors?
All SMBJ10H 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 SMBJ10H meets industry standards.
7.What is the process for return or replacement of SMBJ10H?
All SMBJ10H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ10H, 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 SMBJ10H part is unused and in its original packaging.
Return procedure for SMBJ10H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ10H 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
