VOD217T Optoisolator Equivalent & Substitute Parts

Part Overview

The VOD217T is a 2-channel optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. This component provides 4000Vrms isolation voltage and is designed for applications requiring high-voltage galvanic isolation with DC input control. The part is currently active in production with 1690 units in stock. Substitute parts are necessary when VOD217T availability is limited, when alternative sourcing is required, or when design specifications allow for compatible alternatives within the defined electrical and mechanical parameters.

Key Parameters

Parameter	VOD217T
Manufacturer	Vishay Semiconductor Opto Division
Number of Channels	2
Voltage - Isolation	4000Vrms
Current Transfer Ratio (Min)	100% @ 1mA
Output Type	Transistor
Voltage - Output (Max)	70V
Current - Output / Channel	50mA
Vce Saturation (Max)	400mV
Operating Temperature	-40°C ~ 100°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the VOD217T are qualified based on the following criteria:

Electrical Compatibility Parameters:

Number of Channels: Must be 2
Output Type: Must be Transistor
Current - Output / Channel: Must be 50mA minimum
Vce Saturation (Max): Must be 400mV or lower
Voltage - Forward (Vf) (Typ): Must be 1.2V
Input Type: Must be DC

Mechanical Compatibility Parameters:

Mounting Type: Must be Surface Mount
Package / Case: Must be 8-SOIC or 8-SO form factor
Moisture Sensitivity Level (MSL): Must be 1 (Unlimited)

Regulatory & Compliance Parameters:

RoHS Status: Must be ROHS3 Compliant
Product Status: Must be Active

The substitute parts listed (ACPL-227-500E, ACPL-227-50BE, ACPL-227-50CE, ACPL-227-560E, ACPL-227-56BE) meet all electrical, mechanical, and regulatory requirements. The primary difference is isolation voltage: substitute parts provide 3000Vrms isolation versus the VOD217T's 4000Vrms. This represents a lower isolation rating and must be evaluated against application requirements.

Parameter Comparison

Parameter	VOD217T	ACPL-227-500E	ACPL-227-50BE	ACPL-227-50CE	ACPL-227-560E	ACPL-227-56BE
Manufacturer	Vishay	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom
Number of Channels	2	2	2	2	2	2
Voltage - Isolation	4000Vrms	3000Vrms	3000Vrms	3000Vrms	3000Vrms	3000Vrms
Current Transfer Ratio (Min)	100% @ 1mA	50% @ 5mA	130% @ 5mA	200% @ 5mA	50% @ 5mA	130% @ 5mA
Turn On / Turn Off Time (Typ)	5µs, 4µs	3µs, 3µs	3µs, 3µs	3µs, 3µs	3µs, 3µs	3µs, 3µs
Voltage - Output (Max)	70V	80V	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV	400mV	400mV
Operating Temperature	-40°C ~ 100°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.173", 4.40mm)	8-SOIC (0.173", 4.40mm)	8-SOIC (0.173", 4.40mm)	8-SOIC (0.173", 4.40mm)	8-SOIC (0.173", 4.40mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	Vendor Undefined	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All substitute parts are active products with ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements. The ACPL-227 series from Broadcom provides improved performance characteristics in several areas: faster switching times (3µs vs. 5µs turn-on), higher maximum output voltage (80V vs. 70V), and extended operating temperature range (-55°C to 110°C vs. -40°C to 100°C).

The critical design consideration is isolation voltage. The VOD217T provides 4000Vrms isolation, while all ACPL-227 substitutes provide 3000Vrms isolation. Selection of substitute parts requires confirmation that 3000Vrms isolation voltage is acceptable for the application.

Among the ACPL-227 variants, ACPL-227-50CE offers the highest current transfer ratio (200% minimum @ 5mA), while ACPL-227-500E and ACPL-227-560E offer the lowest (50% minimum @ 5mA). ACPL-227-50BE and ACPL-227-56BE provide intermediate performance (130% minimum @ 5mA). Packaging differs only in format: ACPL-227-56BE is supplied in Tape & Reel format, while others are available in Cut Tape & Digi-Reel format.

Frequently Asked Questions (FAQ)

Q: Can ACPL-227 series parts directly replace VOD217T in all applications?

A: Direct replacement requires confirmation that 3000Vrms isolation voltage meets application requirements. The VOD217T provides 4000Vrms isolation. All other electrical and mechanical parameters are compatible.

Q: What is the difference between ACPL-227-50BE and ACPL-227-56BE?

A: These parts are electrically identical. The primary difference is packaging format: ACPL-227-50BE is supplied in Cut Tape & Digi-Reel format, while ACPL-227-56BE is supplied in Tape & Reel format.

Q: Are there differences in current transfer ratio among the ACPL-227 variants?

A: Yes. ACPL-227-50CE has the highest minimum current transfer ratio at 200% @ 5mA. ACPL-227-50BE and ACPL-227-56BE provide 130% @ 5mA. ACPL-227-500E and ACPL-227-560E provide 50% @ 5mA. Selection depends on application requirements for optical coupling efficiency.

Q: Do substitute parts support the same operating temperature range as VOD217T?

A: No. VOD217T operates from -40°C to 100°C. All ACPL-227 substitutes operate from -55°C to 110°C, providing an extended temperature range suitable for wider environmental conditions.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All ACPL-227 variants listed are ROHS3 Compliant. REACH status for substitutes is REACH Unaffected, compared to Vendor Undefined for VOD217T.

Q: What is the package width difference between VOD217T and ACPL-227 parts?

A: VOD217T uses 8-SOIC with 0.154" (3.90mm) width. ACPL-227 parts use 8-SOIC with 0.173" (4.40mm) width. Both are surface-mount compatible, but PCB layout and footprint must accommodate the slightly wider package.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message