My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ36CAH
- Part No.:
- SMBJ36CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAH.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,041
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ36CAH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for automotive-grade ESD and surge protection in power rails and signal lines. It features a 36 V working stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 58.1 V maximum clamping voltage (VC) at 10.8 A peak pulse current, and 600 W peak pulse power rating with sub-1 ps response time - deployed in lighting control modules, CAN bus interfaces, and automotive body electronics.
For engineers reviewing the SMBJ36CAH datasheet, SMBJ36CAH pinout, SMBJ36CAH application, or SMBJ36CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, DO-214AA (SMB) package thermal performance (RθJA = 55°C/W), and leakage current ≤1 µA at 36 V.
Technical Context
The SMBJ36CAH operates as a bidirectional avalanche diode, symmetrically clamping transients above ±40.0 V in both polarities without polarity dependence. Its glass-passivated junction ensures stable breakdown behavior under repetitive surge stress, while its low RθJC (10°C/W) enables reliable power dissipation during 10/1000 µs waveform events up to 600 W.
Designed for automotive environments, it meets AEC-Q101 stress testing and ISO 7637-2 immunity requirements across all five defined pulses. The device exhibits <1 µA blocking leakage at rated VWM and maintains clamping performance down to -55°C and up to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 40.0 / 44.2 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPP | 58.1 V @ 10.8 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's max overvoltage exposure |
| PPK | 600 W - Peak non-repetitive surge power handling per single 10/1000 µs event |
| ID @ VWM | ≤1 µA - Low leakage preserves system standby current budget in always-on automotive modules |
| TJ max | +150 °C - Enables operation in under-hood ECUs and headlamp drivers without derating |
| Package | DO-214AA (SMB) - Standardized surface-mount footprint compatible with automated SMT assembly |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (not applicable for bidirectional SMBJ36CAH - symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge conduction path | Either terminal serves as anode or cathode depending on transient polarity; no orientation required during placement |
| Cathode band (absent) | N/A - Bidirectional configuration | No marking; terminals are electrically identical - simplifies PCB layout and eliminates polarity check in production |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing per JESD22 standards |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without degradation |
| Sub-1 ps response time | Clamps ESD events before sensitive ICs experience overstress - critical for CAN, LIN, and sensor interface protection |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained automotive supply chains |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow - supports standard SMT processes without special handling |
Applications
| Automotive Lighting Control | CAN Bus Transient Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers in headlamp and tail lamp modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional TVS placed across VCC–GND rail to clamp surges before they reach power management ICs. Use Value: Prevents latch-up or permanent damage to 36 V-rated drivers during 12 V system load dump events (ISO 7637-2 Pulse 5a/b), enabled by 58.1 V clamping at 10.8 A. | Use Scenario: Safeguarding CAN transceivers (e.g., TJA1042, SN65HVD230) against EFT and ESD on differential bus lines. IC Role / Device Role / Timing Role: Placed between CAN_H/CAN_L and ground in common-mode configuration to suppress asymmetric transients. Use Value: Maintains bus integrity during 1 kV EFT bursts (IEC 61000-4-4) due to fast response (<1 ps) and low clamping voltage relative to CAN transceiver abs max ratings. |
| Body Control Module (BCM) Power Input | Automotive Sensor Interface Protection |
Use Scenario: Shielding 5 V/3.3 V LDO regulators and MCU inputs in door modules and seat controllers from battery line transients. IC Role / Device Role / Timing Role: Connected from input rail to ground to absorb ISO 7637-2 Pulse 1 (−100 V, 400 ms) and Pulse 2b (−100 V, 100 ms) energy. Use Value: 600 W peak power rating and 150 °C TJ max allow sustained operation in high-ambient BCM enclosures without thermal runaway. | Use Scenario: Protecting analog front-end inputs of pressure, temperature, or position sensors exposed to harness-induced noise. IC Role / Device Role / Timing Role: Placed across sensor signal pair (e.g., PT100 bridge outputs) to suppress common-mode ESD and coupled transients. Use Value: ≤1 µA leakage at 36 V ensures minimal impact on precision ratiometric measurements, while bidirectional symmetry avoids signal inversion issues. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ36CA | Same DO-214AC (SMA) package; slightly higher VC (60.0 V @ 10.3 A); RθJA = 65°C/W vs. 55°C/W | Lower power density due to larger thermal resistance; less suitable for compact under-hood layouts | Select when existing SMA footprint is fixed and 600 W rating remains sufficient |
| ON Semiconductor SMCJ36CA | DO-214AB (SMC) package; higher PPK (1500 W); VC = 58.1 V @ 25.8 A; RθJA = 35°C/W | Higher surge margin but 2.5× larger PCB area; requires layout revision | Choose for enhanced robustness in engine control units where space permits |
Compared with SMBJ36CAH, SMAJ36CA offers identical electrical specs but lower thermal efficiency in a smaller package, while SMCJ36CA delivers higher surge capacity at the cost of footprint size - making SMBJ36CAH the optimal balance of AEC-Q101 reliability, DO-214AA manufacturability, and 600 W protection in space-constrained automotive modules.
Availability
SMBJ36CAH is available at Aetrix Electronics and suitable for automotive lighting systems, CAN bus nodes, and body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ36CAH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global automotive and industrial certifications.
The SMBJH series was developed specifically for AEC-Q101-compliant transient suppression in 12 V/24 V automotive subsystems, emphasizing low clamping voltage, fast response, and robust thermal performance in DO-214AA packaging.
FAQ
What does the "CAH" suffix indicate in SMBJ36CAH?
The "CAH" suffix denotes a bidirectional configuration with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional "H" variants, SMBJ36CAH provides symmetrical clamping for both positive and negative transients - essential for protecting differential buses and AC-coupled signals without polarity constraints.
Is SMBJ36CAH suitable for ISO 7637-2 Pulse 5a (load dump) protection?
SMBJ36CAH is not rated for ISO 7637-2 Pulse 5a (which reaches −100 V to +125 V with 400 ms duration). Its 36 V VWM and 58.1 V VC make it appropriate for Pulses 1, 2a, 2b, 3a, and 3b only. For load dump, higher-voltage TVS like SMBJ170AH or dedicated load dump suppressors are required.
How does SMBJ36CAH differ from SMBJ36AH?
SMBJ36AH is unidirectional with cathode marking and forward voltage drop (~3.5 V), while SMBJ36CAH is bidirectional with no polarity marking and symmetrical IV characteristics. SMBJ36CAH is used where transient polarity is unpredictable (e.g., data lines), whereas SMBJ36AH suits DC rail protection with defined ground reference.
What is the maximum allowable PCB trace length when using SMBJ36CAH for ESD protection?
For effective ESD suppression per IEC 61000-4-2, PCB trace inductance must be minimized. With SMBJ36CAH's sub-1 ps response, traces to protected IC pins should be ≤5 mm in length and routed directly adjacent to ground plane - longer paths degrade clamping performance due to added inductance delaying voltage collapse.
Does SMBJ36CAH require derating at elevated ambient temperatures?
Yes - SMBJ36CAH's 600 W peak power rating is specified at TA = 25°C and must be linearly derated above that point per Figure 2 in the datasheet. At 85°C ambient, usable PPK drops to ~420 W; at 125°C, it falls to ~240 W. Thermal design must account for RθJA = 55°C/W and expected board-level airflow or copper pour.
SMBJ36CAH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 10.8A
- 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)
SMBJ36CAH FAQ
1.How can I place an order for SMBJ36CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAH 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 SMBJ36CAH reliable?
The price and inventory of SMBJ36CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CAH is usually 5 days.
3.What payment methods are accepted for SMBJ36CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAH?
SMBJ36CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAH 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 SMBJ36CAH?
For technical support, including SMBJ36CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAH requirements.
6.How does Aetrix verify that SMBJ36CAH is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAH 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 SMBJ36CAH meets industry standards.
7.What is the process for return or replacement of SMBJ36CAH?
All SMBJ36CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAH, 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 SMBJ36CAH part is unused and in its original packaging.
Return procedure for SMBJ36CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CAH 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…
