CD214A-F1100 Equivalent & Substitute Parts

Part Overview

The CD214A-F1100 is a general-purpose rectifier diode manufactured by Bourns Inc., rated for 100 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating package and mounting variations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1 A	mV
Reverse Recovery Time (trr)	25	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Capacitance @ Vr, F	10	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Mounting Type: Surface Mount
Technology: Standard rectifier diode

Acceptable Variation Parameters:

Voltage - Forward (Vf): Tolerance range 900–1000 mV @ 1 A
Reverse Recovery Time (trr): Up to 50 ns (original 25 ns)
Current - Reverse Leakage: Up to 10 µA @ rated voltage
Capacitance: 8–25 pF @ 4V, 1MHz
Operating Temperature Range: Minimum -55°C, maximum ≥150°C
Package / Case: DO-214AC (SMA) or DO-214BA (GF1) acceptable

Non-Substitutable Criteria:

Parts with Vr < 100 V
Parts with Io < 1 A
Through-hole or non-surface-mount packages
Parts rated for different voltage classes (e.g., 200 V parts used in 100 V circuits)

Substitute parts are grouped into two categories: Direct Package Equivalents (DO-214AC/SMA) and Package Variants (DO-214BA/GF1). Package variants require PCB layout verification but maintain electrical equivalence.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [mV]	trr [ns]	Ir @ Vr [µA]	Package	Temp Range [°C]	Status
CD214A-F1100	Bourns Inc.	100	1	950	25	5 @ 100V	DO-214AC	-55 to 150	Obsolete
EGF1B-E3/5CA	Vishay	100	1	1000	50	5 @ 100V	DO-214BA	-65 to 175	Active
EGF1B-E3/67A	Vishay	100	1	1000	50	5 @ 100V	DO-214BA	-65 to 175	Not For New Designs
EGF1B	Fairchild Semiconductor	100	1	1000	50	10 @ 100V	DO-214AC	-65 to 175	Active
ES1B-E3/5AT	Vishay	100	1	920	25	5 @ 100V	DO-214AC	-55 to 150	Active
ES1B-LTP	Micro Commercial Co	100	1	950	35	5 @ 100V	DO-214AC	-65 to 175	Not For New Designs
ESH1B-E3/5AT	Vishay	100	1	900	25	1 @ 100V	DO-214AC	-55 to 175	Active
ESH1B-E3/61T	Vishay	100	1	900	25	1 @ 100V	DO-214AC	-55 to 175	Active
ESH1BHE3_A/H	Vishay	100	1	900	25	1 @ 100V	DO-214AC	-55 to 175	Active
ESH1BHE3_A/I	Vishay	100	1	900	25	1 @ 100V	DO-214AC	-55 to 175	Active

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

ES1B-E3/5AT (Vishay General Semiconductor) is the preferred substitute. This part maintains identical package geometry (DO-214AC/SMA), matching forward voltage (920 mV vs. 950 mV), identical reverse recovery time (25 ns), and equivalent reverse leakage current (5 µA @ 100 V). Product status is Active, ensuring long-term availability and supply chain stability. RoHS3 compliance and unlimited moisture sensitivity level (MSL 1) match the original specification.

Secondary Recommendation for Enhanced Performance:

ESH1B-E3/5AT, ESH1B-E3/61T, ESH1BHE3_A/H, and ESH1BHE3_A/I (all Vishay) offer superior reverse leakage characteristics (1 µA @ 100 V vs. 5 µA), lower forward voltage (900 mV), and extended upper temperature rating (175°C vs. 150°C). These parts are Active status and suitable for applications requiring tighter leakage specifications. ESH1BHE3_A/H and ESH1BHE3_A/I include AEC-Q101 automotive qualification.

Package Variant Option:

EGF1B-E3/5CA (Vishay, Active status) provides electrical equivalence with DO-214BA (GF1) package. This substitution requires PCB footprint verification but maintains all critical electrical parameters. Extended temperature range (-65 to 175°C) and SUPERECTIFIER® series designation indicate enhanced performance characteristics.

Parts to Avoid for New Designs:

EGF1B-E3/67A and ES1B-LTP carry "Not For New Designs" status and should not be selected for new circuit implementations, despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q1: Can CD214A-F1100 be replaced with a 200 V rated diode?

No. While a 200 V diode (such as CD214A-FS1D) is electrically capable of operating in a 100 V circuit, substitution violates the principle of rated voltage matching. The 100 V rating defines the maximum reverse voltage the circuit will encounter. Using a higher-rated device introduces unnecessary cost and may alter circuit performance characteristics such as capacitance and switching behavior.

Q2: What is the difference between DO-214AC and DO-214BA packages?

DO-214AC (SMA) and DO-214BA (GF1) are distinct surface mount packages with different footprints and lead configurations. Both are surface mount technologies, but PCB layout and solder pad dimensions differ. Substitution between these packages requires verification that the PCB design accommodates the alternate footprint. Electrical performance is equivalent when using parts from the same manufacturer series.

Q3: Why do some substitute parts have lower reverse leakage current (1 µA vs. 5 µA)?

Lower reverse leakage current indicates superior semiconductor material quality and manufacturing process control. ESH1B series parts demonstrate enhanced leakage characteristics compared to standard ES1B or EGF1B series. For most applications, both specifications are acceptable. Applications requiring minimal leakage (precision analog circuits, high-impedance paths) should specify ESH1B variants.

Q4: Is the difference in reverse recovery time (25 ns vs. 50 ns) significant?

Reverse recovery time affects switching speed and electromagnetic interference (EMI) characteristics. The original CD214A-F1100 specifies 25 ns. Substitutes with 50 ns (EGF1B series) are acceptable for general-purpose rectification but may exhibit slightly higher switching losses and EMI in high-frequency applications. For circuits operating below 100 kHz, this difference is negligible. For switching frequencies above 500 kHz, maintain the 25 ns specification using ES1B or ESH1B series.

Q5: Can automotive-qualified parts (ESH1BHE3_A/H, ESH1BHE3_A/I) be used in non-automotive applications?

Yes. Automotive qualification (AEC-Q101) represents a superset of standard reliability requirements. Parts qualified for automotive use meet or exceed industrial and commercial specifications. Using automotive-qualified parts in non-automotive applications introduces no compatibility issues and may provide enhanced reliability margins.

Q6: What does "Not For New Designs" status mean?

"Not For New Designs" indicates the manufacturer is discontinuing the product line. While the part remains electrically functional and available in inventory, it will eventually reach end-of-life. New circuit designs should not incorporate these parts. Existing designs using these parts may continue operation, but long-term procurement should transition to Active status alternatives.

Q7: Are all substitute parts RoHS3 compliant?

All substitute parts listed carry RoHS3 compliance certification, matching the original CD214A-F1100. This ensures compatibility with environmental regulations and procurement requirements across global markets.

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